武山铜矿西风井机房基础发生裂缝和沉降的机制分析

对武山铜矿西风井机房基础发生裂缝和沉降的原因从几何、地质、力学等方面进行分析研究，指出该裂缝和沉降是由于采空区引起的地应力释放、岩层的急倾性、软弱夹层的韵律性分布、构造裂隙的发育与密集、风机运转产生的循环载荷、暴雨期间渍水的灌入与下渗等多种因素综合作用的结果。本文还为采空区的下盘稳定性分析提出了一个简单方便的计算模型。

Analysis on the Mechanism of the Crack and Subsidence Occurred in the Foundation of the Engine Room for the Xifeng Shaft in Wushan Copper Mine

In this paper, detailed analysis and study on the cause of the crack and subsidence occurred inthe foundation of the engine room for the Xifeng shaft in Wushan Copper Mine is carried out from the geometrical, geological and mechanical viewpoint. It is pointed out that the crack and subsidence occurred in thefoundation result from the combined action of several factors: the stress release caused by the goaf, the steepin clination of the rock layer, the periedical distribution of the weak intercalation, the developed and concetraied structural joints, the cyclical loading caused by the operation of the fan and the filling and penetrationof the floodwater during the heavy rain. Also in this paper, a simple and convenient computational model isproposed for the stability analyses of the hasal part of the goaf.