摘要
以F10正断层为主的近东西向断层是花家湖矿区的主控断层,对于其导水性以及采动影响问题一直没有得到很好的解决。借助于中煤地质工程总公司对花家湖的勘探工程,对矿区主控断层的富导水性进行了研究。根据矿区7条过F10断层的石门没有涌水现象;穿过F10断层的钻孔岩芯都为断层糜棱岩,均不漏水; F10断层带的抽水试验显示断层带是贫水的,单位涌水量为0. 0000419 L/s·m,水位历经200天仍未恢复到初始状态等资料证明F10断层不导水。根据F10断层受采动数值模拟,认为在750 m深的条件下,采矿对断层超前影响范围为30～45 m,断层防水煤柱的极限宽度为45～60 m(安全系数为1. 5)。
The nearly east-west F10 normal fault is the main control fault of Huajiahu Mining area. It has notbeen solved well for the conductivity of the F10 fault and whether mining disturbance would make aquifertransmit water. Based on the Central Coal Geological Engineering Corporation’ s exploration project for theHuajiahu Mining area , the water content of the main control fault in the mining area was systematically studied . Because the 7 cross-holes passing the F10 fault in the mining area, did not have water gushing phenomena; the drilling cores through the F10 fault were fault mi-ribbed rocks without leaking;Pumping test in theF10 fault zone showed that the fault zone was water-poor;the amount of water gushing in the F10 fault zonewas 0. 0000419 L / s·m and after 200 days the water level did not restore to the initial state ,the F10 Faultsdid not transmit water. According to the mining numerical simulation of F10 fault , it was considered that inthe depth of 750 m , the influence range of mining was 30～45 m, and the limit width of fault waterproof coalpillar was 45～60 m （safety factor was 1.5） hidden trouble.
作者
赵亚飞
ZHAO Yafei(North China Institute of Science and Technology,Yanjiao,065201,China)
出处
《华北科技学院学报》
2018年第5期24-28,共5页
Journal of North China Institute of Science and Technology
基金
中央高校基本科研业务费资助项目(3142018027)
关键词
花家湖煤矿
主控断层
采矿扰动
导水性
Huajiahu Coal Mine
main control faults
mining disturbance
water conductivity
