侧壁导坑 meaning in Chinese

side heading

Using fem ( finite element method ) , the paper makes mechanical analyses on bench cut method and side heading method , it also makes mechanical analyses on some auxiliary construction methods , such as big pipe - roof protection , horizontal roll - spraying , big and small angle pipe - roof protection and surface grouting
论文采用有限元的分析方法，主要对台阶法、侧壁导坑法进行了力学分析，也选择了大管棚法、水平旋喷法、大小外插角管棚法和地表注浆加固四种辅助工法进行力学分析。
The paper introduces the progress and the statue quo of tunnel portal construction , discusses the condition to employ full face method , bench cut method , single side heading method and double sides heading method of portal construction , points out advantages and disadvantages of these methods . the order to adopt these methods of single track , double track and tri - track tunnel in shallow - depth , uneven pressure and incompact ground is also advised after compare
讨论了全断面法、台阶法、单侧壁导坑法和双侧壁导坑法在隧道洞口段施工中的使用条件和优缺点，对这四种施工方法从各个方面进行了比选，提出了单线、双线和三线隧道的洞口段处于浅埋、偏压、松散的地层中时各种施工方法选择的先后顺序。