含瓦斯厚煤层顶分层开采解放作用分析  

Protective Action Analysis on Mining Top Slice of Thick Gassy Coal Seam

作　　者：李树刚[1] 张正林[1] 等 

机构地区：[1]西安科技学院能源科学与工程系，西安710054

出　　处：《辽宁工程技术大学学报（自然科学版）》2002年第3期271-273,共3页Journal of Liaoning Technical University (Natural Science)

摘　　要：通过相似材料模拟实验,分析了含瓦斯厚煤层顶分层开采时支承压力对煤层底板的破坏作用,并根据压力分布和破坏程度对煤层底板裂隙沿深度方向进行定性定量分带,计算出底板最大破坏深度及其位置,探讨了各分带瓦斯运移特征,进而阐述了顶分层开采对下分层的解放作用,为安全、合理开采含瓦斯厚煤层且有效抽排煤层瓦斯提供了理论依据。Based on the model test of simulated material, the failure action on seam floor coming from abutment pressure is analysed when top slice of thick gassy coal seam is mined. And the fissure fractures of seam floor are zoned in the depth direction according to the pressure distribution and the failure scope. The maximum failure depth and its position in seam floor are calculated. The characteristics of gas delivery in each zone are analysed, and then the protective action to next and under slice are studied with mining top slice.

关 键 词：含瓦斯厚煤层 顶分层开采 解放作用 

分 类 号：TD713.31[矿业工程—矿井通风与安全] TD323