摘要
针对贵州盛远煤矿高瓦斯低透气性近距离煤层群安全高效开采的问题,运用理论分析、数值模拟相结合的方法,分析了薄煤层切顶成巷无煤柱全面卸压开采的理论基础。根据现场40403综采工作面的实际情况,理论计算了上保护层工作面留设区段煤柱时,下部7#、8#煤层中形成卸压盲区的面积,并分析了下伏煤岩层有效卸压保护范围。
Based on the problem of safe and efficient mining of high gas and low permeability and near coal seam group at the Guizhou Shengyuan coal mine, and the theoretical basis of the mining of coal pillar without coal pillar in thin coal seam is analyzed by adopted the method of combining the theory analysis and numerical simulation. Departures from the practice of the 40403 working-face, then the area of the uncompressed zone in the No.7 and No.8 coal seam is calculated,and the effective discharge pressure protection scope of the lower coal seam is analyzed.
作者
谢小平
XIE Xiao-ping(College of Mining and Civil Engineering, Liupanshui Normal College, Liupanshui 553004, Chin)
出处
《煤炭技术》
CAS
2018年第7期16-19,共4页
Coal Technology
基金
贵州省教育厅青年科技人才成长项目(黔教合KY字[2016]268号)
贵州省科技厅技术基金项目(黔科合人才团队[2013]4030号)
关键词
较薄煤层
切顶成巷
无煤柱开采
全面卸压
thin coal seam
cut-top into a roadway
non-pillar mining
overall pressure relief
