井下综合物探技术探测隐伏小煤窑采掘范围研究

Research on concealed small mines mining range detection by underground integrated geophysical exploration technology

小煤窑肆意采掘形成杂乱无序的采空区,对煤矿采掘工作面形成重大安全隐患。为了达到准确探测的目标和靶向性治理,探讨了矿井瞬变电磁法、四极测深法和矿井地质雷达法的基本原理,分析了存在隐伏小煤窑采掘情况时地层的地球物理响应特征,提出了3种物探方法相结合的井下综合物探技术,对团柏煤矿2个隐伏小煤窑井筒及采掘范围进行探测研究,并对探测结果进行了分析解释并得到钻探验证。应用表明,利用井下综合物探技术有效地探测了隐伏小煤窑井筒位置及其采掘范围,达到了对隐伏小煤窑采掘范围的多方法佐证、高精度综合探测效果,为后期针对性地治理小煤窑采空区提供可靠的技术保障。

Small coal mines'irregular mining formed many disordered goafs,and the goafs were significant potential safety hazards for coal mining faces.In order to achieve the goal of accurate detection and the governance of targeting,the basic principles of mine transient electromagnetic method,quadrupole sounding method and mine geological radar method were discussed,the geophysical response characteristics of strata were analyzed when there were hidden small coal mines,and the underground comprehensive geophysical exploration technology concluding three geophysical exploration methods was proposed and used to detect the shaft and mining range of two hidden small coal mines in Tuanbai Coal Mine,and the detection results were analyzed,interpreted and verified by drilling.The application showed that the underground comprehensive geophysical prospecting technology could effectively detect the shaft position and mining range of the concealed small coal mines,achieve the multi-method corroboration and high-precision comprehensive detection effect on the mining range of the concealed small coal mines,which providing reliable technical guarantee for the targeted treatment of goafs of small coal mines.