铁法矿区大兴矿复合煤层群覆岩裂隙发育规律实测  

Measured analysis of mining fissure evolutionary characteristics of compound multiple coal seams in Daxing mine at Tiefa

作　　者：王晓东 

机构地区：[1]陕西郭家河煤业有限责任公司,陕西宝鸡721505

出　　处：《辽宁工程技术大学学报（自然科学版）》2013年第2期153-156,共4页Journal of Liaoning Technical University (Natural Science)

基　　金：国家自然科学基金青年基金资助项目(51004101)

摘　　要：为研究复杂煤层群条件下覆岩裂隙的发育规律,对405工作面地面采空区钻井瓦斯抽放进行实测.根据瓦斯抽放体积分数确定裂隙活化区,结合模拟分析等手段,总结出覆岩采动裂隙演化规律.结果表明:回采巷道内侧垂直方向上30～40 m、水平方向上距回采巷道30～50 m、采空区距工作面30～80 m范围为裂隙较发育区域.A study on mining fissure evolutionary characteristics in compound multiple coal seams has been conducted through the observation in the vertical wells for methane drainage. According to the methane emission concentrations, the crack activation areas are delineated. In addition, using simulation and analysis, the characteristics of mining fissure evolutionary are derived. The results show that the areas with large deformation and well developed fissures consist of the area over mine roadway within 30-40m in vertical direction, the area around mine roadway within 30-50m in horizontal direction, and the gob area with a 30-80m distance from coalface.

关 键 词：高瓦斯 低透气性 复合煤层群 采动裂隙 演化规律 体积分数 钻孔 瓦斯抽放 裂隙活化区 

分 类 号：TD327[矿业工程—矿井建设]