weak surrounding rock meaning in English

软弱围岩

Construction methods of large - span railway station tunnels on buried weak surrounding rock
浅埋软弱围岩大跨铁路车站隧道施工方法
Application of construction technology for soft and weak surrounding rock in construction of suqiao coal mine
软弱围岩施工技术在苏桥煤矿基建工程中的应用
Based on the concrete engineering of dunshang double - arch highway tunnel , this paper researches the mechanic properties of double - arch highway tunnel with soft and weak surrounding rocks through on - the - spot arrangement of the test components . with the aid of 2d - program , this paper make a simulated analysis of the whole construction process with three kinds of construction methods and also contrasts with the test results on the spot
基于软件平台2d -对不同施工方法下软岩双连拱公路隧道施工过程各阶段围岩与支护体系的力学性状进行了数值仿真分析，并与实测结果进行对比分析，得出了一些有益的结论，为软岩双连拱公路隧道的设计与施工提供了有效指导。