摘要
为解决煤矿断层导水和奥灰水的水害问题,以五沟煤矿作为研究对象,通过比较瞬变电磁法、可控源音频大地电磁法、高密度电法和直流电阻率测深法4种物探方法的优缺点,最终选用抗干扰能力强的直流电阻率测深法在该区进行了探测工作。研究结果表明,在地形相对平坦、接地条件好、但存在一定地电干扰的矿区采用直流电阻率测深法能够较好地探测断层的富、导水性和奥陶系灰岩顶界面地层的富、含水性。断层富、导水表现为沿断层带有低电阻率异常条带反映;奥陶系灰岩顶界面地层富、含水表现为低电阻率异常区、带反映。依据各剖面图和平面图上视电阻率变化综合反映这两种水害的表现形式,为煤矿水害探测提供了新思路和技术。
To solve the water disaster of coal mine fault water channeling and Ordovician limestone water, taking Wugou Coal Mine as the research object,by comparing the advantages and disadvantages of four geophysical methods of time domain electromagnetic methods （TEM） , controlled source audio magnetotelluric method （ CSAMT） , high-density electrical method and direct-current resistivity sound-ing, finally, the direct-current resistivity sounding with strong anti-interference ability was used to detection work in this area. The results show that, by using the direct-current resistivity sounding method, both water abundance and water conductivity of fault and both water abundance and aquosity of Ordovician limestone top interface formation can be well detected in the mining area with relatively flat ter-rain, good ground conditions and some electron interference. The performance of the fault water abundance and water conductivity is re-flected by the low resistivity anomaly bands along the fault. The water abundance and aquosity of Ordovician limestone top interface for-mation exhibits low resistivity anomaly zones and bands. According to resistivity changes of the profile and plane graph reflect the two manifestations of water disaster, all this has provided new thought and technology for the detection of coal mine water disaster.
出处
《中州煤炭》
2016年第12期143-146,共4页
Zhongzhou Coal
基金
国家重大专项资助(2016ZX05045007-003)
关键词
电阻率测深法
煤矿水害
断层
富、导水性
奥陶系
resistivity sounding method
coal mine water disaster
fault
water abundance and water conductivity
Ordovician
