The occurrence of minc accidents such as fire and gas explosion always causes great loss of estate. So it is very important to quickly conrol the accident situation and correctly make rescue. GIS-based mine safety decision support system (abbreviated for “MGIS system”) can find the best escaping route and rescue route through shortest route analysis and loop analysis, also determine the fire influence area and fire source through connectivity analysis and ancestor tracing analysis. And it can determine all exits and blast holes to be closed so as to implement closing quickly when the fire is hard to be controlled.

Compared with the strain definitions of finite deformation, the defects of Green strain and polar decomposition theorem have been pointed out. Based on the additive decomposition theorem, which was established by Prof. Chen Zhida, the nonlinear gauge method being fit for the numerical simulation is presented. This method combines the Ritz-Galerkin approximate method together with visualization and is a new extension of residual method. The numerical example demonstrate that this method can obtain the results approach to practical phenomena and is an effective and feasible approach to solve the large deformation of mining subsidence.

基于非线性大变形几何场论，建立了覆岩断裂带高度预计的差分余量法，使得地表移动预计和覆岩断裂带的确定统一为一个有机整体；证明了介质变形连续性的协调条件可以用转动协调方程等价表示，微观转动不协调是导致岩石类材料颗粒与夹杂接触边界产生微裂纹的原因。算例的计算结果表明，该方法简单、快速，有望在放顶煤开采和水体下采煤中得到应用。

本文根据相似理论，对潞安矿区综放与分层开采岩层与地表移动规律进行了相似材料模拟试验研究，获得了岩层与地表移动参数，对指导潞安矿区减小采动损害及保护煤柱留设具有实际应用价值。

应用从属面积法应力分析原理，求得了倾斜煤层及条带煤柱的应力表达式，证明了煤柱中的正应力及剪应力与煤层倾角A和侧压系数k 有关，剪应力对煤柱强度和稳定性有影响；留设煤柱破坏与否决定了上覆岩层移动及地表沉陷曲线的形态。研究表明，随着煤层倾角的增大，垂直于煤层层面方向的弯曲量减小，而沿煤层层面方向的滑移量增加；当55°<α< 75°时，地表沉陷曲线呈波浪形分布，出现两个下沉值相对最大的点。