基于拉格朗日算法的综放采场矿压显现规律研究

Study on Pressure Character of Fully-mechanized Sublevel Caving Face Based on Lagrangian Arithmetic

着重分析了时间、工作面推进距离及上覆岩层压力对采空区冒落矸石物理力学特性的影响,运用数值模拟方法,系统研究了工作面长度对综放采场矿压显现和顶煤破碎的影响规律,为综放开采技术方案的确定提供了理论依据。

The influence of time, the distance of coalface advanced and the rock pressure caused by the overlying strata on caved waste in the gob are analyzed particularly the basic principle and failure criterion of Lagrangian algorithm are introduced briefly. The effect of the face length on mine pressure behavior and break of top coal have been systematically studied by using numerical simulation method for fully mechanized sublevel caving face. The result provides some theoretical foundation for the plan of fully-mechanized sublevel caving mining method.