推覆构造带下伏煤层无煤柱开采水害防治技术与工程实践

Water damage prevention technology and engineering practice of coal pillarless mining in underlying coal seam

刘庄煤矿是厚松散层覆盖的隐伏式井田,井田南部发育由逆断层F1、F1-1、F1-2组成的推覆构造带,其上盘(即推覆体)为寒武纪鲕状灰岩、紫色泥岩及二叠纪煤系地层,下盘(即原地系统)为13-1煤及以下主要含煤段,推覆构造带安全煤柱压覆了大量煤炭资源。针对这一情况,通过“综合探查、科学分析、效果验证、安全评价”四位一体防治水技术体系,实现了推覆构造带下伏煤层无煤柱安全开采,解放了大量的煤炭资源,具有良好的经济效益和社会效益。

Liuzhuang Mine is a concealed coalfield covered by thick loose layer, the southern part of the minefield is developed with a tectonic belt composed of reverse faults F1, F1-1 and F1-2. The upper plate is Cambrian Limestone, purple mudstone and Permian coal-bearing strata, the lower plate is 13-1 coal and the following main coal-bearing sections. The nappe structure with safety coal pillars covers a large amount of coal resources. In response to this situation, through the "integrated exploration, scientific analysis, effect verification, safety evaluation" four-in-one prevention and control of water technology system, the safe mining of coal pillars in the underlying coal seam under the nappe structure belt was realized, and a large amount of coal resources were liberated, with good economic and social benefits.