虎龙沟煤矿81517工作面顶底板富水性探测

Detection of Water Yield Property in Roof and Floor of 81517 Working Face in Hulonggou Colliery

采用矿井音频电透视法对挖金湾虎龙沟煤矿81517工作面内煤层顶底板的富水性进行勘测,采用16 Hz和128 Hz视电导率分别探测50~100 m和0~50 m煤层顶板、底板煤岩层段含水情况,通过综合解释成果图解读发现位于工作面距巷口790~870 m处底板和位于工作面距巷口130~300 m处顶板,有两处富水异常区,根据探测结果提出相应的防治水措施。

The paper introduces the application of the audio-frequency electrical penetration method in detection of water yield property in roof and floor of coal seam at 81517 working face of Hulonggou Colliery in Jiaojinwan,in which 16 Hz and 128 Hz apparent conductivity are used to explore the water content of 50~100 m and 0~50 m coal seam sections respectively.Through the interpretation of the comprehensive interpretation results,it is found that there are two abnormal water-rich areas in the floor located at 790~870 m and the roof located at 130~300 m away from the roadway entrance,and the corresponding measures of water prevention and control are proposed.