摘要
桥头河矿区为典型的岩溶大水矿区,一直以来深受矿井突水的威胁。为了解决岩溶突水问题,指导矿区深部煤炭资源的开采,本文分析与研究了区内3煤层开采后顶板和底板突水机理。突水原因主要为隔水层厚度较小,采动引起的导水裂缝带及底板采动导水破坏带沟通了上下部的岩溶含水层,再经过含水层中承压水的劈理和溶蚀作用,最终造成工作面突水。针对本区水文地质特征及充水条件,提出了相应的水害防治措施。
Qiaotouhe mining area is a typical karst mining area,which has been threatened by mine water inrush.In order to solve the problem of karst water inrush and guide the mining of deep coal resources in the mining area,the water inrush mechanism of roof and floor after the mining of 3 coal seams in the area was analyzed and studied.The main cause of water inrush was that the thickness of aquifuge was small.The water flowing fracture zone caused by mining and the water flowing failure zone caused by floor mining connected the upper and lower karst aquifers.With the cleavage and dissolution of confined water in the aquifers,the water inrush occurred in working face.Considering the hydrogeological features and water-filling conditions of the area,corresponding water disaster prevention measures were put forward.
作者
蒋飞军
卿国屏
蒋魁
徐晓亮
JIANG Fei-jun;QING Guo-ping;JIANG Kui;XU Xiao-liang(The Coal Geological Exploration Institute of Hunan Province,Changsha 410014,Hunan,China)
出处
《资源信息与工程》
2021年第3期76-79,86,共5页
Resource Information and Engineering
关键词
桥头河煤矿区
岩溶
突水机理
水害防治
Qiaotouhe coal mining area
karst
water inrush mechanism
flood prevention
