摘要
在系统分析了寺河井田矿井地质、水文地质条件及主要含水层与主采3#煤层之间的相互关系的基础上,指出奥陶系灰岩水和石炭系太原组K2灰岩岩溶水是影响矿井涌水的主要含水层。通过突水系数计算,论证了底板隔水性能,对底板条件作出了评价,得出"正常区域掘进、开采是安全的,承压水防治的重点是构造导水"的结论。针对该结论,提出了"有疑必探,先探后掘"的承压水防治技术思路和具体工作步骤,并探讨了物探探查、钻探验证、水文地质补探和留设防水煤柱等承压水防治技术措施,为寺河矿开采3号煤层时的承压水防治工作提供了技术支持。
Based on systematic analysis of mining geological, hydrogeological conditions and mutual relations between the main aquifer and main mineable No.3 coal seam in the Sihe minefield, pointed out the Ordovician limestone and K2 limestone karstic water in the Taiyuan Formation, Carboniferous System are main aquifers to impact mine water inflow. Through water bursting coefficient computing, justified coal floor confining performances and assessed floor conditions, a conclusion of ＂driving and mining in normal area is safe, confining water controlling emphasis is on structural water conduction＂. In allusion to the conclasion, confining water controlling technical idea and practical measures of ＂exploring where suspicious of, exploring then driving＂ put forward, and discussed confining water controlling technical measures of geophysical prospecting, drilling justifying, hydrogeological further exploring and safety water barrier leaving, thus provided technical support and guarantee for confining water controlling during No.3 coal seam mining in Sihe coalmine.
出处
《中国煤炭地质》
2009年第A02期49-53,共5页
Coal Geology of China
关键词
水文地质条件
承压水防治
3号煤层
寺河矿
hydrogeolgical condition
confining water controlling
No.3 coal seam
Sihe coalmine
