峰峰矿区深部矿井水文地质特征及水害防治技术

Water pollution control technology and hydrogeological characteristics of deep mine in Fengfeng Mine

峰峰矿区煤田深部地质构造复杂且发育隐伏微型陷落柱、裂隙等导水构造,奥灰岩溶含水层埋深近千米仍发育强富水径流带,开采煤层底板承受奥灰岩溶水水压高达10.8～11.2MPa,发生多起灾害性水害事故。针对这些问题,研究新的水害治理理念,创新水害治理思路,在剖析峰峰矿区深部奥灰岩溶水害特点和发生灾害性水害原因的基础上,提出了以矿井保障系统为基础,以多水平分支孔为核心的地面超前区域治理技术,通过大量工程实践,基本控制和消除了奥灰岩溶水害威胁,保证了生产安全。

The deep coal field geological structure was complex in Fengfeng mine district. There was some complex water diversion struetures such as concealed miniature collapsed column and cracking and so on, strong water-rich runoff zone was still developing in Kilometer deep Ordovician limestone aquifer, the mining of coal seam floor withstanding the ash karst water pressure as high as 10.8 ~ 11.2 MPa, severe water inrush accidents happened in the recent 10 a. The concept of water disasters prevention and control has had the huge transformation, the advanced regional governance technology, core technology was multiple horizontal branch holes based on mine protection system by analyzing the damage eharaeteristics of deep Ordovician limestone aquifer and reasons of water inrush accidents. Through a large number of engineering practice, the water inrush accidents of deep Ordovician limestone aquifer was controlled basically, ensuring the safe production？of the mine.