# Safety Analysis of Buried Corrosion-Defect Gas Pipeline in Ceramic Soil Layer Under Blasting Action
## 6 Conclusions  
It is found that the stress change of corrosive gas pipes is significantly affected by the elastic modulus, pipe thickness, and defect length under the same blasting parameters. An increase in elastic modulus and pipe thickness will reduce the maximum axial stress and circumferential stress of the pipe under the blasting vibration, while increasing defect length will lead to stress increase. The study results provide an important basis for pipeline safety evaluation and maintenance.  
In pipeline design and material selection, materials with high elastic modulus should be given priority, and the thickness of the pipeline should be strictly controlled to ensure that it meets the design requirements. These measures can improve the overall structural stability and blasting vibration resistance of the pipeline, thus reducing the maximum stress of the pipeline and improving the safety factor.  
For laid pipes, regular thickness measurement and defect inspection should be carried out to find and repair the pipe segments with insufficient thickness or defects in time. In particular, a pipeline section with a long defect length should be taken as the key object  
Figure 13: Pipeline safety factor under different working conditions.  
\begin{table}
\begin{tabular}{c c c c c c} \hline \hline \begin{tabular}{c} **Working** \\ **Condition** \\ \end{tabular} & \begin{tabular}{c} **Different Elastic** \\ **Modulus of blasting** \\ \end{tabular} & \
\begin{tabular}{c} **Different blasting** \\ **Pair Thickness** \\ \end{tabular} &
\begin{tabular}{c} **Different Defect Length** \\ **Under blasting** \\ \end{tabular} \\ \hline
1 & 210 & 1.28 & 320 & 0.84 & 280 & 0.96 \\ \hline
2 & 195 & 1.38 & 260 & 1.03 & 310 & 0.87 \\ \hline
3 & 170 & 1.58 & 210 & 1.28 & 345 & 0.78 \\ \hline
4 & 150 & 1.81 & 170 & 1.58 & 380 & 0.71 \\ \hline
5 & 140 & 1.92 & 140 & 1.92 & 420 & 0.64 \\ \hline \hline \end{tabular}
\end{table}
Table 5: Pipeline safety factor under different working conditions.  
of monitoring, and the daily inspection and maintenance work should be strengthened to ensure safe operation.  
To sum up, through reasonable selection of materials, strict control of pipeline thickness, timely repair of defects, and strengthening daily inspection and other measures, the safety factor of corroded gas pipelines under the action of blasting vibration can be effectively improved to ensure safe operation. These measures are of great significance for the safety evaluation and maintenance of gas pipelines.  
Conceptualization, Z.W.; methodology, software, Y.S.; validation, T.L.; writing--original draft preparation, Y.S.; writing--review and editing, X.L.; project administration, X.L.; funding acquisition, X.L. and T.W. All authors have read and agreed to the published version of the manuscript.  
This study was sponsored by the National Natural Science Foundation of China (Grant No. 52308393) and the State Key Laboratory of Precision Blasting and Hubei Key Laboratory of Blasting Engineering, Jianghan University (Grant No. PBSKL2023B2). Fuzhou Social Science Key Research Base Project (2024 FZB14). Key Project of Fuzhou Social Science Research Base (2024 FZB16). Marine Research and Development Fund of Fujian University of Science and Technology (GY-S24142). General Project of Humanities and Social Sciences Research, Ministry of Education (24 YJCZH009). Youth Project of Social Science Foundation of Fujian Province (FJ2022C080).  
Not applicable.  
The original contributions presented in this study are included in the article. Further inquiries can be directed to the corresponding authors.  
This part of the study is grateful to [PERSON], [PERSON], [PERSON], [PERSON] and [PERSON] for their help in this paper.  
The authors declare no conflicts of interest.