摘要
通过对鲍店煤矿八采区山西组主采3煤顶部基岩及第四系下组2个主要充水含水层富水性特征的分析,确定其转变为防砂煤柱留设是安全可行的。针对采区山西组主采3煤层较大部分存在分叉现象的实际情况,分别计算了3上煤层和3煤层的留设高度;3上煤层与3下煤层属于近距离煤层开采,在重复开采条件下计算了3下煤层留设高度。
Making a detailed analysis of the water-rich characteristics on the two main water-filled aquifers,the top bedrock of No.3 coal mining group in Shanxi formation and the lower group of Quaternary. Shifting to sand-proof pillar mining is safe and feasible. Based on most of bifurcation phenomena existing in the No.3 coal seam of Shanxi formation, the setting height of No.3 upper coal seam and No.3 coal seam is calculated respectively. No.3 lower coal seam and No.3 upper coal seam belong to the short range seam mining, the setting height of No.3 lower coal seam is calculated in the repeated mining conditions.
作者
张永刚
李运江
刘延欣
武宇亮
朱术云
ZHANG Yong-gang LI Yun-jiang LIU Yan-xin WU Yu-liang ZHU Shu-yun(School of Resources and Earth Science,China University of Mining and Technology, Xuzhou 221116,China Baodian Coal Mine, Yanzhou Mining Group Co., Ltd., Zoucheng 273500, China)
出处
《煤炭技术》
北大核心
2017年第5期63-65,共3页
Coal Technology
基金
国家重点基础研究发展计划(973)项目(2013CB036003)
关键词
厚松散层薄基岩
安全煤岩柱留设
重复采动
thin bedrock with thick loose bed
safe coal and rock pillar setting
repeated mining
