bluuebunny/crossref_metadata_2025 huggingface dataset:
Advanced Modelling of Full Characteristic Curve of Tubular Turbine Based on Back-Propagation Neural Network
Authors: Wu Yanzhao , Hu Zilong , Jin Faye , Tao Ran , Xiao Ruofu , Zhu Di
Published: September 2022

For the comprehensive characteristics of hydro-turbine, it is generally grasped through the full characteristic curve map of hydro-turbine obtained from the experiment. However, due to the factors such as time cost, fund cost, experimental difficulty and safety, the experimental results cannot hold onto each working condition of hydro-turbine. And for the specific conditions of unknown working conditions, linear interpolation needs to be carried out through the existing experimental results, which will have a certain hidden danger to the safe and stable operation of the turbine. This paper uses the advantages of neural network to predict the overall operation space of hydro-turbine through back-propagation neural network under the condition of existing experimental points. The results show that the neural network method can effectively ensure the accuracy of the operation characteristics of the hydro-turbine, which can guide the safe and stable operation of the hydro-turbine more clearly, and ensure the efficient and stable operation of the hydro-turbine.
Design and Optimization of Energy Storage Configuration for New Power Systems
Authors: Xia Yuyao , Jin Jianxiang , Huang Wenjun , Mi Xiaoling , Yang Yi
Published: September 2022

In order to optimize the comprehensive configuration of energy storage in the new type of power system that China develops, this paper designs operation modes of energy storage and constructs a power balance model considering the regulation priority of energy storage incorporated into the grid, the designed charging and discharging power and capacity of energy storage, and restrictions from external power systems. An electricity leveling per kWh cost model is established on three different types of energy storage. Data in Qinghai Province are used as a model application example to calculate and analyze the energy storage configuration and cost under a certain power curtailment target. The results show that among the multiple configuration plans that meet the curtailment rate target, molten salt storage characterized by high charging power, long discharging duration and low capacity cost, is the most advantageous.
Wind Turbine Blade Root Load Monitoring Based on Fiber Bragg Grating Sensor
Authors: Cao Yiqiang , Wang Qian , Li Jianghui , Yang Yinhua
Published: September 2022

As an environmentally friendly and energy-saving renewable energy source, wind power generation is an effective means to solve the energy crisis and environmental pollution problems. Blade load monitoring is of great significance to the safe operation of wind turbines. In this paper, a blade load monitoring system is designed based on a fiber grating sensor and a load calibration algorithm is presented. To verify the effectiveness of the proposed methodology, a 4MW wind turbine was used as the object for the calibration test, and the test results indicated that the accuracy of the fiber grating sensor-based blade load monitoring satisfies the engineering application precision.
Fast Frequency Response Capability of Large-Scale Clustered Access to the New Energy at the Sending End in Power Grid
Authors: Zhang Zhenyu , Cheng Lin , Wang Jili , Wang Guochun , Ke Xianbo , Jia Yichao , Zhang Gang , Wei Ping
Published: September 2022

Recently, the proportion of the new energy in the Northwest China Power System has been growing, occupying the space of conventional power units with rotational inertia. The operation with safety and power system stability is facing great challenges. Facing the increasing shortage of traditional frequency modulation resources, it is urgent to carry out the use of wind power and photovoltaic (PV) to involve in the system frequency modulation method. From the perspective of the power grid operation demand, this paper proposes the optimization scheme of fast frequency control parameters of the new energy power generation. The primary frequency modulation method of the new energy and conventional unit power supply cooperate and relay on the time scale. Through the application in the actual power station, the results show that the grid has sufficient primary frequency modulation ability, and the frequency security of the large power grid at the transmission end is effectively improved.
Split-Phase Flow Optimization Method for Large-Scale Wind Power Collection Grid
Authors: Jia Ruiyuan , Liu Qihui
Published: September 2022

In order to improve the voltage unbalance of large-scale wind power collection grid three-phase and solve the problem that negative sequence voltage unbalance factor exceeds the national standard, which sometimes even causes the wind turbine generators to be off grid, this paper proposes a split-phase flow optimization method that uses the split-phase reactive power compensation equipments in wind farms collected area to improve the voltage unbalance. Firstly, this paper takes the collection grid and the wind farms as optimization nodes, establishes an optimization model to minimize the mean value of voltage unbalance degree, then the node voltage safety constraint and the constraint condition of the reactive power compensation capacity of each phase of the reactive power compensation equipments are considered. Secondly, this paper introduces PSO to solve the optimization problem. Finally, an actual area wind farms collected is used to verify that the method proposed in this paper can effectively solve the problem that voltage unbalance degree is too high.
Comparative Analysis of Calculation Methods for Conversion Efficiency of Tidal Energy Converters
Authors: Xia Hainan , Wang Xiangnan , Li Qiang , Jia Ning
Published: September 2022

In the field test of tidal energy converters, the conversion efficiency of tidal energy converter is an important indicator of measuring the power characteristic performance of tidal energy converter and one of the important aspects of the field test of tidal energy converter. Based on the R&D status and test requirements of tidal energy converters, the calculation methods for conversion efficiency of tidal energy converters were researched, the calculation formula of conversion efficiency of tidal energy converters was deduced during the entire test period, and the calculation and comparative analysis of the conversion efficiency data of tidal energy converters in each velocity range and those were carried out with the field test data of tidal energy converters during the entire test period. The results show that the maximum value of the calculation methods for conversion efficiency at home and abroad for the calculation results of conversion efficiency in each velocity range is less than 1% but basically the same for those during the entire test period. The research results will provide references for the calculation of conversion efficiency index in the field test of power characteristics of tidal energy converters.
Forest Benefit-Rotation Model Considering Carbon Sequestration, Ecological and Social Benefits
Authors: Qu Shengyuan , Luo Zhongwen , Wang Zhen , Wang Hongzhou
Published: September 2022

Forest ecosystems are the largest terrestrial carbon sink, making important contributions to atmospheric regulation, stability of the biosphere and eco nomic benefits to society. In order to manage forests properly, this paper makes forest management recommendations, including logging through mathematical modeling. Firstly, this paper uses the Logistic function to establish a Tree Growth model to simulate the growth of tree species. A piecewise periodic function is introduced to obtain a Tree Growth-Felling model. Secondly, combined with specific forest data including α, dominant tree species and initial age distributions, Forest Carbon Sequestration Model that assesses sequestration stock can be established. Then this paper comprehensively considers the carbon sequestration, ecological benefits and social production value of the forest, and gives a benefit assessment model. Under the modification of this model, decisions can be made on the rotation period of forests. Through the analysis, it can be found that the appropriate cycle of cutting is the best management of forest. Finally, this paper uses the above models to evaluate Lishan National Nature Reserve in Shanxi Province. When the forest benefit is the largest, the best cutting rotation is 28 years. In 100 years, 224 million yuan of benefit can be obtained and 3.103×106 tons of carbon can be fixed.
Deformation Prediction of Gravity Dam Based on EMD-SARIMA Model
Authors: Li Bin , Bai Xingping , Zhang Qun , Li Jun
Published: September 2022

Hydraulic engineering plays an important role in energy construction in China. As the most important water retaining structure, the deformation trend and safety state of dam is undoubtedly the most concerned problem in engineering. Dam deformation monitoring data is the most critical information to understand dam deformation. So, the analysis and prediction of dam deformation monitoring data is an important measure to master dam safety state. However, the monitoring data of dam generally contains noise components. In order to reduce the noise influence and improve the stability and accuracy of dam monitoring data. EMD-SARIMA model was established in this paper. The monitoring data was decomposed into several Intrinsic Mode Function (IMF) from high to low frequency by using Empirical Mode Decomposition (EMD). Then, the data was reconstructed after eliminating the IMF mainly containing noise based on the Continuous Mean Square Error (CMSE) criterion. Finally, a Seasonal Auto-Regressive Integrated Moving Average (SARIMA) model was established for the reconstructed data. The results show that EMD can effectively reduce the noise in dam monitoring data. The reconstructed data is more stable than the original data, and closer to the actual displacement process of the dam. Compared with SARIMA model, the prediction accuracy of EMD-SARIMA model meets the requirements, and is more accurate and less noise effect. It can be applied to denoise data and prediction analysis of gravity dam.
Calculation Model of Optimal Orientation of a New Precast Concrete Component Solar Heating Maintenance Building
Authors: Yu Nan , Wang Yanhu , Ning Kuoda , Sun Runhua , Zhao Chen
Published: September 2022

The orientation of the new temperature rise maintenance building directly impacts the energy consumption of heating curing of PC components. According to the law of the sun’s motion trajectory and the dynamic change characteristics of solar radiation energy, this paper takes the maximum interception of solar energy by the transparent roof of the heating and maintenance building as the research goal. The study applies thermal process analysis and extreme value theory. The simplified calculation model of the optimal orientation of the heating and maintenance building in the latitude area and the DeST simulation calculation results were used to test the calculation model. According to the simplified calculation model, the recommended values of the best orientation of buildings in eight suitable solar energy maintenance areas in China were given.
Study on Regional Suitability of Heat-Source Tower Heat Pump
Authors: Guo Yuhu , Cao Xianqi , Tong Gaoqiang , Yu Pengfei , Huang Shoubin , Wen Xiantai
Published: September 2022

To address the regional applicability of heat-source tower heat pumps (HSTHPs), a mathematical model of HSTHPs was established and experimentally verified. In different thermal zones, the seasonal operation characteristics of HSTHPs were investigated in winter and summer conditions. The results showed that, the heating seasonal performance factor (HSPF) value of HSTHPs in cold zone is the lowest, but it can reach 2.40 in the winter, and the HSPF values of HSTHPs in hot-summer and warm-winter (HSWW) zone A, hot-summer and cold-winter (HSCW) zone and mild zone are all greater than 2.70. The seasonal energy efficiency ratio (SEER) values for the HSTHPs in four thermal zones are above 4.70 in summer. Except for the severe cold zone, HSTHPs have good prospects in the other four thermal zones, particularly in mild zone, with a high HSPF value of 2.77 and a high SEER value of 5.43, respectively.
Evaluation of Sustainable Development of Baotou City Based on Ecological Footprint
Authors: Cheng Li , Zhu Jin , He Xiaohui
Published: September 2022

The ecological footprint model was used in this paper to evaluate the sustainable development status of Baotou City by calculating the ecological footprint, ecological carrying capacity and ecological deficit/surplus in 2018. The results showed that: (1) In 2018, the per capita ecological footprint of Baotou City was 1.11506 ha, the per capita ecological carrying capacity was 0.8371 ha. There is 0.2780 ha ecological deficit, which is in a fragile and unsustainable development state; (2) The demand for farmland, grassland and fossil energy land is large, but the carrying capacity of grassland is limited; (3) Coking coal, raw coal and coal washing, account for 99% of the energy demand footprint; Residents’ needs of dairy and meat in the diet structure makes the demand of the grassland to achieve total footprint almost a third; (4) The fossil energy land, construction land and water footprint per capita ranked higher, and footprint is greater than the carrying capacity; Regional sustainability is weak, and need adjust the structure of energy consumption, residents’ diet, control of urban sprawl to guarantee the sustainable development of city.
Numerical Simulation of Natural Gas Hydrate Development by Decompression Assisted CO2 Replacement Method
Authors: Gao Wenlong , Ma Pinghua , Wang Xixi , Han Senwei , Lin Jingyu , Zhang Hongyuan , Shao Xianjie
Published: September 2022

Based on the study of the properties of natural gas hydrate characteristics and displacement mechanism, the mathematical model of natural gas hydrate exploitation by decompression assisted CO2 replacement method has been established. Based on the numerical simulation to inject different temperature of CO2 hydrate reservoir, this paper analyzed the process of hydrate reservoir, and lowered the change rule of the bottom hole pressure hydrate reservoir. The simulation results show that the heat transfer area of CO2 in the reservoir expands with the increase of injection temperature, and there is a certain limit. The gas production rate of natural gas hydrate increases with the increase of reservoir temperature. The larger the pressure difference is, the greater the assisting force for hydrate decomposition is, and the better the decomposition effect of natural gas hydrate is. However, if the pressure difference is too large, the stability of reservoir will be damaged. The mathematical model of CO2 replacement method for gas hydrate mining established in this paper and the discovered change rule provide theoretical and technical support for the later research and commercial exploitation of natural gas hydrate.
Study on Mechanism of Water-Rock Interaction in the Process of Irrigation with Mine Water
Authors: Xu Pin , Yang Quancheng , Yao Chunmei , Li Feng , Sun Qingran , Cai Guangyin
Published: September 2022

This paper studies the concentration rules of different components of exudate based on original soil column test by using coal mine pit drainage and tap water as filter fluid to simulate water-rock interaction in sewage water irrigation, clear water irrigation or precipitation filtration, and the results show that the water-rock interaction is mainly dissolved by soluble salt, followed by cation exchange and adsorption. The carbonic balance movement occurred in both sewage and clear water irrigation, accompanied by the complex cooperation of some ions. These physical chemistry processes contribute to the sulphate and total hardness of groundwater in the irrigated areas.
Preparation of Cotton Straw-Based Activated Carbon by Microwave Charring and Its Adsorption Characteristics on Ni2+
Authors: Zheng Wenxuan , Yang Ying
Published: September 2022

In this study, cotton stalks from Xinjiang Alar were used as raw materials. Preparation of modified cotton straw-based activated carbon by microwave-assisted pyrolysis using H3PO4 as activator. The effects of different impregnation ratios, microwave power and irradiation time on the yield of cotton straw carbon and its adsorption performance on Ni2+ in the simulated wastewater were investigated by using Lagergren’s quasi primary and secondary adsorption kinetic equations. The experimental results showed that the adsorption performance of the modified cotton straw-based activated carbon was best under the conditions of 100 mL of simulated wastewater, Ni2+ mass concentration of 30 mg/L, pH = 6.5, impregnation ratio of 1.5, microwave power of 600W and irradiation time of 7 minutes, and the adsorption kinetics of Ni2+ was in accordance with Lagergren quasi-secondary kinetic equations. The BET surface area and total pore volume of the modified cotton straw-based activated carbon were 1334 m2/g and 0.918 m3/g, respectively, which were 112 and 29 times higher than those of the direct pyrolysis activated carbon.
Study on Macrostructure and Fourier Transform Infrared Spectroscopy of Cornstalk
Authors: Xu Yan , Jiang Yinlong , Yang Huxia , Cai Yungao
Published: September 2022

As a biological by-product, cornstalk will pose a huge threat to the development of sustainable agriculture and environmental protection if it is not fully utilized. In this study, the macrostructure was characterized by optical camera and the chemical composition of cornstalk rind and cornstalk pith was characterized by Fourier transform infrared spectroscopy (FTIR). The test results show that the cornstalk was divided into rind and pith macroscopically, the cornstalk is smooth outside, and the pith is a sponge-like structure, the fiber structure evenly distributed on the pith. FTIR analysis showed that the cornstalk was presumed to be aliphatic compounds containing C-H chains and rich in fatty acids and/or ketones, and the main components include cellulose and lignin. The results of this study provide new inspiration and reference for the post-processing of cornstalks.
Analysis and Evaluation of Wastewater Quality During Tunnel Construction Based on Drilling and Blasting Method
Authors: Zheng Fengwei , Liu Liu , Deng Jingzi , Zhuang Yang , Yan Zewang , Zhou Xiaohan
Published: September 2022

During the construction of tunnel based on drilling and blasting method, a large amount of wastewater will be produced, in which the types and concentrations of main pollutants will change regularly with the continuous circulation of construction process. In this paper, the wastewater of Hengwu tunnel in the drilling, post blasting, slag discharge and initial support stages is sampled and detected, the main pollutant types and change laws of construction wastewater in each stage are analyzed, and the set pair analysis method is used to evaluate the wastewater quality to determine the degree of wastewater pollution in different construction stages. The research shows that after blasting, the concentration of ammonia nitrogen first reaches the peak, and then other pollution concentrations begin to rise. Different construction stages have different effects on wastewater quality. The construction wastewater generated in the initial support stage of Hengwu tunnel is the most polluted, and the construction wastewater in the drilling stage is the least polluted. The research results of this paper can provide reference for the selection of wastewater treatment process in different construction stages of similar projects.
Research on “Information Asymmetry” in the Assessment of Local Government’s Ecological Achievements in the Yangtze River Basin
Authors: Peng Xianze , Li Xiaoling
Published: September 2022

Accurate and true information is an important basis for the assessment of local government’s ecological achievements. Based on the “three phosphorus” incident, this paper analyzes the “information asymmetry” problem existing in the assessment of local governments’ ecological achievements in river basin governance. Based on the Internet big data cloud platform, this article sets up water quality detection stations in various sections of the Yangtze River Basin, and real time online monitoring is achieved through satellite remote sensing. Public, the information of the information horizontal, vertical and transparent.
Study on Remediation of Soil Cadmium Pollution by the Combination of Eupatorium Adenophorum and Cunninghamella Elegans
Authors: Wang Huifang , Yang Xue , Lv Dongpeng
Published: September 2022

To investigate the removal effect of heavy metal Cd by the combined repair of Cunninghamella elegans and Eupatorium adenophorum. Three control experiments were set up, namely, C. elega ns, E. adenophorum, C. elegans combined with E. adenophorum. The content of Cd in soil, fresh weight and dry weight of E. adenophorum at 30 days and 70 days were detected, and the water content in E. adenophorum was calculated. When the concentration of Cd was less than 120 mg/kg, the water content of eupatorium adenophorum was increased and the content of Cd in soil was decreased. The growth and development of Eupatorium adenophorum could be promoted by adding Cunninghamella elegans into soil, and the toxicity of heavy metal Cd to Eupatorium adenophorum could be reduced.
Concentration, Speciation and Risk of Migration and Transformation of Soil Metals Around a Pb-Zn Mine
Authors: Dong Zhicheng , Xu Chenhao , Wang Lin , Liu Shuxing , Zhang Lina
Published: September 2022

The migration and transformation of soil heavy metals around mines is a hot issue of global concern. In order to evaluate the potential risk of migration and transformation, investigation and surface soil sample collection were conducted around a Pb-Zn mine. Contents of fourteen metals in four different fields were analyzed. And speciation of As, Cd, Cr, Cu, Ni, Pb and Zn was detected by sequential extraction procedures. Then, characteristics of them are discussed. Moreover, the risk of migration and transformation was evaluated based on the risk index (RI), bioavailability index (BI), easier migration index (EMI), harder migration index (HMI). The results show that metal contents in Field 2, Field 3 and Field 4 are higher than the background values. And they are also higher than that in the cleaning and control field (Field 1), except for Co, Mo, Th, Tl and U. The results also indicate that the speciation contents of exchangeable and carbonate bounds in Field 3 and Field 2 are higher than that in Field 4. Furthermore, the RI and the HMI in Field 4 are higher than that in Field 2 and Field 3, with the values of 21.2, 18.8, 10.2 and 1.95, 1.72, 1.49. Nevertheless, the BI and the EMI in Field 3 are higher than that in Field 2 and Field 4, with the values of 1.22, 1.00, 0.85 and 1.823, 1.816, 1.765. This indicates that based on element migration, transformation and bioavailability, more attention should be paid to Field 3 and Field 2 than Field 4. Finally, the results also show that Zn, Cd and Pb should be concerned in order. All of these above not only aid to determine the priority order of soil heavy metals, but also provide a basis for the selection and decision making of remediation strategies.
Research on Efficiency of China’s Inter-Provincial Green Economy Under Air Pollution Constraints
Authors: Yang Chao , He Feng
Published: September 2022

This paper adds the Air Quality Index (AQI) as an undesired output to the green economy efficiency research framework. It uses the super-efficiency SBM-DEA model to analyze the green economy efficiency of provinces in China from 2014 to 2020. The study found that the average green economic efficiency of provinces in China under air pollution constraints showed a trend of falling first and then rising, which indicates that green performance under air pollution constraints in China is not stable. Furthermore, the overall synchronization of environmental and economic performance is the best in the east, followed by the central region, and the worst in the west. Moreover, restrictions on air pollution have led to a decrease in the green economy efficiency of most western provinces. In contrast, the green economy efficiency of most central and eastern provinces has increased.
Comparison of Protective Measures Against Wind Blown Sand on Railway
Authors: Wang Wenbo
Published: September 2022

In the flat area of Northwest China, the subgrade engineering, as a more economical and efficient structural form, plays a leading role in railway engineering. Therefore, the wind sand prevention engineering of railway subgrade engineering needs to be studied. To prevent and control sand damage scientifically, we must correctly understand the types and principles of wind sand prevention and control measures. At present, the main measures to protect the railway from wind and sand are vegetation control measures, such as planting grass and cultivating forests; engineering sand control measures, such as high vertical sand barrier, stone (grass) grid or high density polyethylene Anti-sand net; chemical sand fixation measures, such as spraying chemical agents for sand fixation. In order to compare which kind of wind sand protection project is more suitable for use in the environment of Shashangou landform, according to the mechanical principle of wind sand protection project and the design review opinions of the former Ministry of railways, we have designed a new test section at the small mileage side of Shashangou Bridge on Dunhuang to Golmud railway, and adopted a variety of wind sand protection measures in the test section. In this paper, based on the case observation of the sand hazard prevention and control test section of Shashangou section of Dunhuang to Golmud railway, the effects of various sand prevention measures are compared. At the same time, the bridge engineering (replacing the road with the bridge) is also included in the comparison as a sand prevention measure, and the more suitable sand prevention measures and structural forms in the sand environment are qualitatively compared and popularized. The protection measures based on the fixed principle are the most reasonable; in the typical desert environment, the structural form of bridge engineering is more suitable. In the whole life cycle, the economy of bridge engineering is better than that of subgrade engineering.
Ammonia Inhibition Effects on Performance of a Continuous Stirred Bioelectrochemical System
Authors: Wang Haiman , Zhang Yeting , Wang Guiqiang
Published: September 2022

Continuous stirred bioelectrochemical system (CSBES), consisting of anaerobic digestion reaction zone (ADRZ) and bioelectrochemical reaction zone (BERZ), was constructed to investigate the ammonia inhibitory effects on the performance of electricity generation and wastewater treatment. Continuous experiments were conducted with ammonia concentration ranging from 300 mg/L to 1200 mg/L. As the ammonia concentration increasing from 300 mg/L to 900 mg/L, both of the maximum power densities and the COD removal increased. When the ammonia concentration reached to 1200 mg/L, the maximum power densities of the four cells decreased by 55.7%, 58.9%, 58.0% and 60.6% in comparison with that under ammonia concentration of 900 mg/L. The COD removal reduced to 71.2 ± 1.4%, leading to COD concentration in the effluent increased to 1758 ± 93 mg/L. Electrochemical measurements revealed that the deterioration of anode performance caused the reduction of power generation. The conductivity control experiment showed that the toxic effects of high ammonia concentration on exoelectrogens caused performance deterioration of the CSBES. The threshold ammonia concentration that triggered the inhibition effect on exoelectrogens in CSBES was 1200 mg/L, and the anaerobic consortium in ADRZ could tolerant to higher ammonia concentration than the exoelectrogens in BERZ.
Development and Utilization of Ancient Forests and Recreational Measure – Taking Daxing Yulin Ancient Mulberry Garden as an Example
Authors: Zhang Wen , Huang Kai
Published: September 2022

Ancient trees are the witnesses of the long-standing Chinese culture, as well as the carriers of important history and culture, which tell us the vicissitudes of the human world during the centuries. The ancient forest, moreover, is a treasure left to us by history, and is a living fossil, a living relic, a priceless treasure. Taking Ancient Mulberry Garden in the imperial forest as an example, the article elaborates the importance and necessity of developing and utilizing the ancient forest from three aspects: the history of Ancient Mulberry Garden, the important status of ancient mulberry forest, and the development and utilization of Ancient Mulberry Garden in the imperial forest and recreational measures. This includes a study of the current situation of Ancient Mulberry Garden in the imperial forest to propose problems and improvement measures for the development of Ancient Mulberry Garden in the imperial forest. This paper analyzes the historical changes of ancient mulberry garden, the important position of ancient mulberry forest and the current construction of ancient mulberry garden, and put forward corresponding solutions.
Disaster Anthropomorphism: A Novel Method for the Conflicts Between Disaster Prevention and Sustainable Development Based on a Mechanism Description
Authors: Cai Hao , Li Shan , Zhou Shoujiang
Published: September 2022

Conflicts between disaster and sustainable development broadly exist in the world, with lack of methods and techniques about disaster prevention. In this study, a new method for disaster mitigation is described, i.e., anthropomorphism of disasters. Anthropomorphism on natural disasters was not deeply studied in the previous research and it may have impact on the intentions of preventive behaviors among ordinary people due to stronger risk perception. Therefore, three studies are conducted to verify our hypothesis. This paper has verified the positive influence from anthropomorphism on the intention of preventive behaviors (Study 1) and have confirmed the mediating role of risk perception (Study 2). Finally, results in Study 3 showed when disaster is severe, the anthropomorphism will have positive impact on the preventive behaviors, whereas when the severity is low, the anthropomorphism will decrease the preventive behaviors. These findings might have broad applications in the field of disaster prevention.
New Control Method Based on Wujiu Green Highway Tunnel Lighting
Authors: Li Xiaopeng , Wang Liang
Published: September 2022

Highway tunnel lighting is an important guaranteed condition for safe operation. In engineering applications in recent years, LED lamps, as the recommended road tunnel lamps, have the characteristics of good color rendering, fast start-up, and good energy-saving effect, but the color temperature of different LED lamps is also very different, and different color temperatures are used in tunnels. The LED lamps will have different effects on the driver. However, the current design specification only specifies the illuminance, brightness and uniformity of the lighting indicators, and does not list the color temperature values of lamps that can be used in tunnels of different lengths and speeds, resulting in the choice of tunnel lighting color temperature. It will bring adverse effects and hidden dangers to the safety of tunnel operation. Therefore, adjusting the color temperature value of tunnel lighting is of great significance to the driving safety and comfort of drivers in the tunnel. Combined with the tunnel lighting design of the Wudu to Jiuzhaigou section of the G8513 Pingmian Expressway, the control method of stepless dimming is recommended in this paper through the technical comparison of tunnel lighting control to create a green highway design concept. It can be concluded that when lamps with medium and high color temperature values are used in tunnels, drivers can improve the recognition and response speed of the surrounding environment, which is beneficial to driving safety. Tunnel lighting color temperature adjustable control technology is the way to achieve this goal, and ultimately meet the driving safety requirements, improve the driver’s driving comfort, and achieve accurate and efficient dimming of each section of lighting in the tunnel.
Environment Vibration Visualization Technology of Rail Transit Based on Vibration Map
Authors: Li Qiuyi , Luo Wei , Wei Kai , Li Pengcheng
Published: September 2022

Due to the huge vehicle-track-under rail foundation-earth coupling system, the prediction and evaluation of environmental vibration caused by rail transit are subject to the analysis efficiency for a long time. Whether it is test or theoretical simulation, the research object is often limited to specific sensitive points. However, scientific and accurate urban and rail transit planning requires that the prediction of environmental vibration is global. Referring to the noise map technology, this paper puts forward the concept of vibration map, which is used to quickly predict and visually manage the environmental vibration of rail transit, establishes the rapid prediction model of environmental vibration of rail transit, builds the technical route of realizing vibration map, and takes one section of a rail transit as an example to carry out the application of vibration map technology. The vibration prediction results of application cases show that in the vertical line direction, the vibration induced by rail transit decreases gradually with the increase of propagation distance, and the vibration of individual sections rebounds when transmitted beyond 30m from the center line of the line; The difference of geological conditions has a significant impact on the vibration transmission of rail transit.
Study on the Path of Integration Between Agriculture and Tourism Industry in the Context of Ecological Revitalization: Taking Tongshan County as an Example
Authors: Peng Xianze , Feng Meihan
Published: September 2022

The integration of the agricultural and tourism industries is of great significance to promoting economic restructuring, industrial transformation and upgrading, and helping to revitalize rural industries. The strategy of revitalizing the countryside has put forward further requirements for solving the problems of the “three rural areas”, and has also provided policy support for the integration of the tourism industry and agriculture. The article discusses the integration of tourism industry, market and agriculture through the analysis of the current development situation of Tongshan County, and further discusses the path of integrating tourism industry and agriculture in the context of rural revitalization.
How Does Carbon Trading Affect the Pricing Strategy of Automobile Companies? A Balancing Act of Optimizing Vehicles Pricing and Production Structures
Authors: Shi Yucong , Jiao Zihao , Wang Jing , Teng Lan , Zhang Yanzi
Published: September 2022

This paper studies the social-economic impacts of carbon trading on pricing management and the low-carbon behavior of automobile companies. We propose a game model between electric vehicles and gas-powered vehicles. Further, the influence of carbon trading on automobile selling price, sales volume, and sales profit are analyzed from the production mode of a certain company that only produces gas-powered vehicles. Our research contributes to the optimization of automotive companies’ pricing, production management, and practices in the face of carbon emission quotas restrictions. The profit function was used to establish a game model for the single condition of producing only gas-powered vehicles, and the optimal sales price and profit of gas-powered vehicles were obtained by backward induction. (1) By adjusting the carbon limit, the government can promote the transformation of the automobile industry. (2) Carbon trading presents an opportunity for businesses with lower carbon emissions to mitigate the competitive disadvantage they face in the market.
Study on Emergency Response Countermeasures of Maritime Dangerous Chemical Transportation Emergencies
Authors: Han Chao , Xu Liansheng , Wang Guobo
Published: September 2022

In recent years, with the rapid growth of marine transportation, emergencies in marine transportation of dangerous chemicals have occurred from time to time. Due to the special characteristics of the marine environment, it is difficult to rescue and dispose of hazardous chemical accidents at sea. So, the emergency disposal of hazardous chemicals at sea requires strong professionalism. This paper analyzes the shortcomings in safety supervision and emergency response by sorting out the current situation of emergency response of marine hazardous chemical transportation in China. On this basis, this paper proposes corresponding countermeasures and improves the emergency response capability of marine hazardous chemical transportation.
Study on Green Construction Technology for Super Large Bridges in Plateau Mountain Areas and Its Applications
Authors: Li Yanzhe , Wang Xiongjue
Published: September 2022

Due to such problems as difficulties in road building and transport management and maintenance, narrow construction site and the damage to environment during Super Large bridge constructions in plateau mountain areas, it is hard for energy conservation and emission reduction, soil erosion and environmental pollution reduction. Plateau mountain areas are featured with high altitude, low air pressure, steep slope and deep valley, low temperature, large daily temperature difference, small year temperature difference, strong sunshine and ultraviolet rays, various types of soil erosion, arduousness of the task of water and soil conservation, highly vulnerable ecological environment, difficulty in natural restoration of vegetation after destruction and so on. This paper proposes a study on the application of a green construction technology in Super Large bridges in plateau mountain areas. In the study, the BIM+GIS technology is adopted to realize the decentralized layout of temporary buildings; the steel platform is used instead of the soil platform to build the construction site to save land, and a technology of synchronous construction in multiple layers and sections of high and steep slopes to achieve rapid construction. Technologies such as sewage treatment technology, mud treatment technology are used to realize green construction while reducing water and soil erosion, thus better protecting the environment.
Finite Element Analysis of Axial Compression Behavior of Damaged RC Columns Strengthened with GFRP Strips and Steel Fiber Mortar
Authors: Li Zhe , Zhao Yuhang , Wang Zhili
Published: September 2022

Based on the experiment of damaged RC columns strengthened with GFRP strips and steel fiber mortar, this paper established a model using ABAQUS to perform the finite element simulation analysis and the extended analysis on the factors such as the spacing of GFRP strips, the number of layers and the strength of steel fiber mortar. The results indicate that: The smaller spacing of GFRP strips and the more layers bring the stronger constraint on the core part, the larger peak load on the composite structure and the better ductility; The larger strength of steel fiber mortar brings larger peak load but lower increased range; With the increased strength of steel fiber mortar, its ductility becomes worse, and the brittle failure becomes more obvious. Finally, according to the superposition method, the calculation equation of bearing capacity of damaged RC columns Strengthened with GFRP strip and steel fiber mortar was proposed. The calculated values basically agreed with the test values.
Bridge Deflection Measuring Device with Suspension Cable and Data Collection Method
Authors: Yang Yixuan
Published: September 2022

Deflection is a key index to reflect the bearing capacity and the operation situation of bridges. As the existing measurements methods have their limitations, this paper tries to introduce a new method using suspension cable to measure the deflection of bridges. This method sets the supports for dial meters by erecting main cables and sets up longitudinal measuring points on the bridge deck. The existing of counterweights and limit bars avoids the horizontal disturbance of the structure and keeps the stability. The tools used in this method are light and convenient to adapt the complex conditions. This method has been successfully used in the bridge inspection and has obtained the precise data that reflects the change of deflection of the bridge.
Study on Energy Consumption Characteristics of Air Conditioning in an Existing Residential Building
Authors: Sun Bin , Pan Jianing , Wang Pingshan , Yan Yan , Liu Wen , Li Jinjun
Published: September 2022

The enclosure, lighting and equipment of existing residential buildings have been determined. Therefore, the occupancy behavior has a great influence on the energy consumption of air conditioning in the existing residential buildings. In this paper, a residential building was selected as the research object, and the long- term energy consumption of the building was sorted out. Then through energy calculation and correction with the actual building energy consumption data, the air conditioning energy consumption characteristics which are related to personnel timetable, air conditioning control mode, room setting temperature and room temperature range are obtained. The characteristics have a good matching degree with the actual energy consumption, which can basically reflect the habit of using air conditioning for the occupants. The characteristics can help occupants to know the energy-saving potential and promote behavioral energy-saving.
Study on Petroleum Reservoirs Controlled by Sedimentary Facies in Chepaizi Area
Authors: Zhang Xuecai , Li Na , Chen Tao
Published: September 2022

The purpose of this paper is to clarify the paleocurrent direction and sedimentary characteristics of Cretaceous Qingshuihe formation (K1q) in Chepaizi area. Based on the analysis results of structural maturity and compositional maturity, this paper makes a more detailed exploration on the sedimentary environment and the source of clastic materials in the sedimentary period of K1q. Based on the seismic and drilling data, the paleocurrent direction is analyzed by using paleogeo-morphology and seismic reflection structure. The analysis of rock slices of core samples shows that the content of rock debris and feldspar in sandstone reservoir in the study area is high, the content of quartz is low, the weathering degree of samples is deep, the particle sorting is medium to good, the roundness is subround to subangular, the cementation type is pore cementation, and the structural maturity of sandstone is medium to low. The results of particle size analysis demonstrate that the suspension transportation of fine particles is the main transportation mode in the study area, and the rolling transportation is less. The paleogeomorphology shows that the terrain of the study area is high in the north and low in the south. The seismic profile indicates that low angle imbricate progradation reflection is developed in the northwest and northeast. On the basis of results, the following conclusions are obtained: the paleocurrent of K1q in Chepaizi area carried the northwest provenance into the northeast and south, experienced medium and long-distance transportation.
Effect Analysis and Recognition of 2-D Black Nano-SHEET in Different Karst Reservoirs in Tahe Oilfield
Authors: Zhang Wei , Hou Jirui , Sun Haitong , Qu Ming , Wu Weipeng , Liang Tuo
Published: September 2022

Due to the long-term development of water and gas injection in Tahe Oilfield, the production increase effect decreases year by year. Based on the understanding of the treatment difficulties of water injection and gas injection in the development stage of the fractured vuggy reservoir in Tahe Oilfield, this paper combined with the theoretical analysis of Nano-sheet technology at this stage, such as super amphiphilic interface performance, super emulsification and viscosity reduction ability, ultra-low core adsorption, and super oil washing ability, and has carried out the field application of 2-D black nano-sheet oil displacement in the fractured vuggy reservoir in Tahe Oilfield for a total of 15 wells. Through the oil increase evaluation and comparison of well groups with different inter-well displacement types and different karst reservoir spaces after the application of Nano-sheet, it is found that the well groups with good inter-well connectivity composed of weathered crust underground river karst reservoir space had a high degree of effectiveness. It is the best-selected area for field application. The mine receiving efficiency was as high as 85.7%, and the oil increase is significant, with a cumulative oil increase of more than 5000 tons. It provides practical guidance and a theoretical basis for the follow-up development of 2-D black nano-sheet oil displacement technology in the fractured vuggy reservoir of Tahe Oilfield.
Restoration of Paleogeomorphology of Xujiahe Formation in Sichuan Basin and Its Petroleum Geological Significance
Authors: Fang Xiaomeng
Published: September 2022

In this paper, based on the study of palaeogeomorphology restoration methods, the drilling, logging, seismic data and regional structural history are analyzed, and the pre-sedimentary palaeogeomorphology of Xujiahe Formation in Sichuan Basin is restored by means of well-seismic combination and “fill in the blanks” as its theoretical basis. The study shows that the palaeogeomorphology of Xujiahe Formation is “low in the west, high in the east, low in the north, high in the south”, and “the south is steep, the north is slow”. According to the distribution characteristics and the relative elevation difference, it is divided into three palaeogeomorphological units: highland, slope and depression. The depressions in the west control the distribution of source rocks in xu1 Member. Under the palaeogeomorphic background of low in the west, high in the east, the hydrocarbon generation intensity in Xujiahe Formation increases gradually from highland to depression, from east to west. The location of paleo-slope controls the distribution of sand body in xu2 Member, which is an important exploration direction of reservoir. The source rocks of xu1 Member and the sand bodies of xu2 Member are distributed obliquely in space. This high-quality source-reservoir combination makes xu2 Member the most important gas-producing horizon. The transitional zone between western and central Sichuan is the most advantageous exploration area.
Sludge Activated Carbon Prepared by High Dehydration and Carbonization Equipment and Adsorb Phosphorus in Wastewater
Authors: Chen Jun , Cao Sisi , Wang Jiali , Chen Zhaoming , Jin Jie , Zhang Yang
Published: September 2022

Sludge activated carbon (SAChdc) was prepared by high dehydration & carbonization equipment and used for adsorption phosphorus in wastewater. The sludge can be dehydrated until water content below 60%, then carbonized by the high dehydration & carbonization equipment. The SAChdc used as absorbent in phosphorus of wastewater treatment. The experimental results showed that the adsorption capacity of phosphorus could reach 4.598 mg/g, and adsorption rate was above 91%, the pseudo-second-order kinetic equation and Freundlich isotherm model could describe the phosphorus adsorption process of SAChdc. SAChdc prepared and used as absorbent realized the sludge harmless and resource utilization.