underground opening

Effect of Position of Air Supply Opening on the Efficiency of Smoke Extraction in an Underground Long Channel

地下长通道补气口位置对火灾机械排烟效率的影响

The boundary clement method is applicable to computational analysis of stability of underground opening.

应力不连续法是地下工程数值解析方法之一。

Identification of stability for underground opening is a complex mechanical problem with insufficient knowledge.

地下硐室围岩的稳定性评价是个极其复杂、知识匮乏的问题.

Study on stabilization of underground opening by weakening its surrounding rock

弱化围岩维护地下洞室围岩稳定的研究

A Study on the Time-dependent Convergence Behavior of the Underground Opening Surrounding Rock

洞室围岩收敛变形的时间效应特性研究

The further research of region fo underground opening is needed.

考虑耦合作用的地下洞室群区域的渗控优化布置仍需进一步的研究。

Based on Griffith theory and using the tensile strength of rock, the formulae of critical stress for rock burst in underground opening have been obtained.

采用Griffith强度理论，得到了用岩石抗拉强度表示的地下洞室开挖中发生岩爆的临界应力公式。

Using a combined Rheological model, this paper presents a solution to the time-effect deformation around unlined underground opening under two-dimensional crustal stress field in visco-elastic foundation.

本文介绍应用组合流变模型，研究在粘性弹性地层中二维地压力作用下，毛挖地下洞室周壁变形随时间变化的解答。

Through the medium of expound surface subsidence mechanism, analyses underground rock mass states of in-plane stress and underground opening spatial establishment.

通过阐述地面沉陷机理，分析地下岩体内应力状态和地下开挖空间的形成过程。

Effects of supporting for underground opening considering coupled hydro-mechanical action

考虑水-应力耦合作用的地下洞室的锚杆支护效果