期刊论文

Huang, Fu

英文

Geomechanics and Engineering

2005-307X

2017

13

3

505-515

10.12989/gae.2017.13.3.505

The preparation of this paper received financial support from the National Natural Science Foundation (51308072 and 51678071), the National Basic Research 973 Program of China (2013CB036004) and Innovation Research Project of Priority Key Disciplines at Changsha University of Science and Technology (no. 15ZDXK13). The financial supports are greatly appreciated.

本校为其他机构

Based on the collapse characteristics of a shallow rectangular cavity, a three-dimensional failure mechanism which can be used to study the collapsing region of the rock mass above a shallow cavity roof is constructed. Considering the effects of surcharge pressure and surface bolt on the collapsing block, the external rate of works produced by surcharge pressure and surface bolt are included in the energy dissipation calculation. Using variational approach, an analytic expression of surface equation for the collapsing block, which can be used t...