摘要
以曙光矿1212运输巷冒顶事故为工程背景,分析了冒顶事故发生的原因,认为地质构造是巷道冒顶的重要影响因素,在巷道掘进过程中,地质构造带的存在,尤其是断层的出现,会使地层结构发生大的变化,容易出现顶板事故;运用FLAC3D数值模拟软件对优化方案模拟进行了分析,认为保证顶板的整体性有利于顶板的稳定,提高顶板的支护强度,能有效控制顶底板及两帮移近量。
Taking roof fall accidents in 1212 transportation roadway of shuguang mine as engineer background, the reasons of roof fall accidents are analyzed. An important factor of the roof caving is geological structure. In the process of tunneling roadway, due to the presence of geological structure belt, especially the fault, the stratigraphic structure has big changes, it is easy to occur roof accidents. The article analyzes the simulation of optimization scheme by using FLAG3D, the research shows that keeping the roof integrity is condu- cive to the stability of the roof and improve the strength of the roof, which can effectively control the convergence value of roof and floor and the two sides.
出处
《煤矿安全》
CAS
北大核心
2012年第10期195-197,共3页
Safety in Coal Mines
关键词
大断面巷道
巷道冒顶
数值模拟
预防措施
large section roadway
roof fall
numerical simulation
preventive action
