采空区顶板大面积冒落空气冲击灾害分析

Bright zone air impact large area roof caving disasters research and prevention

针对煤矿采空区顶板大面积冒落将采空区的空气瞬间高速压出而形成的空气冲击灾害,通过建立全部切落-整体运动型顶板冒落和房采采空区顶板冒落两种常见的种顶板冒落形式下的空气冲击的理论模型,分析了空气冲击危害的形成机理,并推导出风速计算公式,为空气冲击危害的预防和控制提供了可靠的理论基础,并针对大同煤矿集团某矿采空区现场情况进行实际应用,提出了灾害防治的方法。

For the large area caving goaf coal mine goaf roof of instantaneous high pressure air out of the air shock hazard, through the establishment of all cut down - the whole sports and room roof caving mining of two common kinds of goaf roof caving roof caving under the form of the theoretical model of air shock, analyzes the formation mechanism of air shock hazards, and deduces the formulas for wind speed, as air shock hazard prevention and control provides a reliable theoretical basis, the datong coal group mine goaf and site condition in practical application, disaster prevention and control methods are put forward.