不连沟煤矿F6225工作面电阻率监测实践研究

Practical study on electrical resistivity monitoring of No.F6225 working face in Buliangou Coal Mine

因不连沟煤矿主采煤层面临奥灰承压水威胁,为实现更为安全高效的开采,以煤矿F6225工作面为研究案例,结合其复杂地质条件的实际情况,通过进行“定向钻+钻孔物探”相结合的长距离超前探测方法对工作面进行全面且准确的探测。结果显示,不连沟煤矿F6225工作面中,已经探明存在多个视电阻率异常区,区域内属于富水性相对较强的区域,当采掘到上述区域附近时,容易存在顶板突水危险。通过水文地质勘探、预喷灌浆、排水设备升级、巷道支护加强以及巡视监测等措施的有机结合,能够有效降低顶板突水风险,提高煤矿巷道的安全性和稳定性。对后续的工作面开采工作提出相关建议,以供参考。

Because the main coal seam of Buliangou Coal Mine faces the threat of ash confined water,in order to achieve more safe and efficient mining,taking the No.F6225 working face as the study case,combined with the actual situation of the complex geological conditions,comprehensive and accurate detection of the working face was carried out through a long distance advanced detection method combining"directional drilling+drilling geophysical exploration".The results showed that in the No.F6225 working face of the Buliangou Coal Mine,several abnormal visual resistivity areas were found,and the area is relatively water-rich.When the mining was reached near the above area,there was easy to exist the danger of the roof water inrush.Through the organic combination of hydrogeological exploration,pre-jet grouting,drainage equipment upgrading,roadway support strengthening and inspection and monitoring measures,the risk of roof water inrush can be effectively reduced,and the safety and stability of coal mine roadway can be improved.The relevant suggestions for the follow-up working face mining work for your reference was put forward.