上覆岩层瓦斯富集区抽放参数研究与应用

Research and Application of Drainage Parameters for Gas Accumulation Zone in Overlying Strata

通过对上覆岩层采空区中离层区域形成的描述,分析并绘制了离层空间位置及高抽钻孔布置原则和参数计算图,并据此优化了离层区域内瓦斯抽放工艺。采用钻孔返水计量法对瓦斯抽放效果影响最大的冒落带高度进行实测,通过不同位置处冒落线预计高度与实测计算高度的一致性,进一步证明了理论计算方法正确性。

According to the description about the formation of bed separation area in overlying strata mined-out area, analyzed the location of bed separation area space and the high-level borehole layout principle and plotted parameters monograph, which was the basis of optimizing the bed separation gas drainage technology. It measured the caving zone height which affected most to gas drainage effect with borehole water return measurement method, experimental and computational results are consistently, this proved the correctness of the theoretical calculation method.