煤气管线 meaning in English

gas line
gas path
gas pipeline

In order to achieve the optimized tunneling approach , first , tunneling procedures , shift length , horizontal jet grouting length , bench length and space length between c and d part of crd method are optimized ; on the basis of these results , two kinds of tunneling schemes are calculated with three - dimensional fem and the optimized tunneling scheme is achieved . as results of the optimized scheme , the conclusion is made that the gas pipe above the tunnel of sk3 + 355 section is secure . the calculation results are verified through comparison of numerical simulation results and site - monitoring measurement data
为得出适合本段工程的最佳施工路线，利用大型有限元通用软件ansys对开挖顺序、开挖进尺、水平旋喷长度、台阶长度及crd工法施工的c 、 d部相错长度进行了有限元数值模拟和优化分析，并利用这些分析结果，进行了两个施工方案的三维有限元动态施工模拟，得出了较优的施工方案，并利用施工后的地表沉降槽曲线，对sk3 + 355断面处隧道上方的煤气管线的安全性进行了分析，得出了利用此施工方案施工不会造成此处煤气管线破坏的结论。