## 1 Introduction
[12; 13] established models for the tensile and compression shear damage of rock bodies in deep tunnels, analyzed the tensile and compression damage of oblique-hole cut blasting, explored the main reasons leading to the difficulty of deep rock cut blasting, and proposed an improved cut blasting design method for deep rocks based on the optimization of blasting design and numerical simulation. [PERSON] et al. [14] investigated the influence of cut design, deviation factor, and rock mass quality on blast pull performance, and proposed suggestions for optimizing the blasting effect. [PERSON] et al. [15] studied the influence of different burden values on rock fragmentation, and proposed the most favorable range of burden values for rock fragmentation based on field experiments and numerical simulations. [PERSON] et al. [16; 17] proposed a novel straight-hole cut blasting technique, which addressed the issue of rock fragmentation at the bottom of the hole through different arrangements of the holes and delay time settings, and also achieved good results in increasing the palm face feed, protecting the surrounding rock and controlling the blasting vibration. [PERSON] et al. [18] employed a three-dimensional digital image method to record an in situ blasting test of a tunnel and investigate the rock movement law of diagonal cutting, as well as the dynamic process and characteristics of the formation of the second free surface by analyzing the changes in the displacement field under a delayed blast, revealing the relationship between cutting parameters and the rock-breaking effect. [PERSON] et al. [19] developed a second-order quadratic model using response surface methodology and applied it to rock tunnel boring and excavation, and carried out comparative analyses on the advantages and disadvantages of the special V-shaped cut blasting mode and the degree of improvement of each parameter on the cutting effect. [PERSON] et al. [20] devised two small-scale experimental methods to ascertain the preliminary cutting parameters based on the influence of these parameters on the efficiency of the excavation process and verified the reliability of the methods through numerical simulation. The technology proposed based on this method has demonstrated efficacy in practical applications within mining contexts. Almost all of the improved methods described above are based on large cross-section tunnels or mines and fail to consider the correlation between the dimensions of the tunnel's palm face, the depth of the borehole, and the spatial distribution of the borehole. These factors are crucial because they have a more significant impact on blasting effect. This is due to the fact that an increase in hole depth gives rise to a notable difference in the damage mechanism between the rock near the free face and the rock at the bottom of the hole. Furthermore, as blasting engineering involves various types of parameters, some of which have strong correlations with one another or with qualitative parameters such as geological conditions, and since different models consider varying types of parameters, it is essential to use the findings of field tests for calibration. In this paper, a section of about 10 m\({}^{2}\) in the Dianzhong water diversion project is analyzed, showing that diversion hole drilling and short blasting excavation footage can not meet the rapid construction needs of the problem. Using the theory of elastic mechanics, blasting funnel theory, bursting gas theory, and a field test of the integrated method, we propose a combination of long and short straight-hole cutting using electronic detonator blasting technology. This method can increase the blasting footage from 1.7-2 m to more than 2.5 m, which is achieved by the traditional trenching method, and has good theoretical value and practical significance in engineering.