摘要
根据《煤矿防治水细则》要求,近距离煤层群开采时,下伏煤层采掘前,必须疏干导水裂隙带波及范围内的上覆煤层采空区积水。因此,为消除213108工作面回采期间形成的导水裂隙带沟通上覆2^(-2)煤层工作面采空区积水隐患,采用音频电透视和矿井高密度电测深两种物探方法探查213108工作面上覆采空区积水分布情况。结合综合物探探测结果以及水文地质资料分析,推断2^(-2)煤层采空区局部积水区有4处,后期井下探放水工作利用物探成果布置钻孔,验证了物探成果的精确性,成功地对上覆煤层采空区积水进行疏放。结果表明,矿井综合物探近距离煤层上覆采空区积水探测具有较好的效果,对采空区探放水具有指导意义。
According to the requirements of Rules for Water Prevention and Control in Coal Mines,during the mining of short-range coal seams,the accumulated water in the goaf of the overlying coal seam within the spread range of the water conducting fracture zone must be drained before the mining of the underlying coal seam.Therefore,in order to eliminate the hidden danger of water accumulation in goaf of overlying 2^(-2) coal seam in the water flowing fractured zone formed during the mining of 213108 working face,two geophysical methods of audio-frequency electrical penetration and mine high-density electrical sounding were used to explore the distribution of water accumulation in goaf of 213108 working face.Combined with the comprehensive geophysical exploration results and the analysis of hydrogeological data,it was inferred that there were four local water accumulation areas in the goaf of 2^(-2) coal seam.In the later stage,the underground water exploration and drainage work used the geophysical exploration results to arrange boreholes,which verified the accuracy of the geophysical exploration results and successfully drained the water accumulation in the goaf of the overlying coal seam.The results show that mine comprehensive geophysical prospecting has good effect on water detection in the overlying goaf of the coal seam,and has guiding significance for goaf water detection and drainage.
作者
刘军
LIU Jun(CCTEG Xi'an Research Institute,Xi'an 710054,Shaanxi,China)
出处
《能源与节能》
2022年第7期151-155,共5页
Energy and Energy Conservation
关键词
采空区积水
井下探放水
音频电透视
矿井高密度电测深
goaf water
underground water exploration and drainage
audio-frequency electrical penetration
mine high-density electric sounding
作者简介
刘军,1993年生,男,宁夏固原人,2019年毕业于长安大学物探专业,硕士,助理工程师。
