综合物探技术在大宽面上覆基岩防治水中的应用  

Application of comprehensive geophysical exploration technology in water control of overlying bedrock on large wide working face

作　　者：高凯斌 GAO Kaibin(Geodesy Company,Shendong Coal Group Co.,Ltd.,Ordos 017205,China)

机构地区：[1]神东煤炭集团地测公司,内蒙古鄂尔多斯017205

出　　处：《陕西煤炭》2024年第4期95-99,共5页Shaanxi Coal

摘　　要：随着煤矿开采深度的逐步增加,井下地质构造尤其是水文地质构造越来越复杂,矿井小构造及井下水害经常困扰着矿井安全和煤炭生产。工作面回采前需查明顶板上覆基岩含水性及内部地质构造,针对工作面含水性及内部构造探测,常用的物探方法有音频电穿透法探测和坑道无线电波透视法探测。由于神东矿区各矿井煤层赋存稳定、煤质优良、开采条件优越,因此回采工作面设计开采宽度大。以鄂尔多斯寸草塔二矿22122工作面为实例,结合坑道无线电波透视法、音频电穿透法2种综合矿井物探方法,探查工作面内部构造情况及工作面顶板上覆基岩富水性。综合2种物探方法和实际水文地质资料对回采工作面进行水害分析,准确预测了大宽工作面上覆岩层的导水性/导水通道,充分论证了电磁波在大宽工作面的有效穿透性,为回采工作面水害防治提供了可靠的依据。With the gradual increase of coal mining depth,underground geological structures,especially hydrogeological structures,are becoming more and more complex,and mine safety and coal mining are often plagued by small structures and underground water damage.Thus it is necessary to find out the water-bearing and internal geological structure of the overlying bedrock on the working face before mining.For the detection of water-bearing and internal structure of the working face,the commonly used geophysical exploration methods include audio frequency electric penetration and radio wave perspective.Because the coal seams in Shendong mining area have stable occurrence,good coal quality and superior mining conditions,the design width of the mining face is large.Taking the 22122 working face of Cuncaota No.2 mine in Ordos,North China Plain as an example,the author investigates the internal structure of the working face and the water enrichment of the overlying bedrock of the roof of the working face by combining the two comprehensive geophysical exploration methods of tunnel radio wave perspective and audio electric penetration.Based on the two geophysical exploration methods and actual hydrogeological data,the water damage analysis of the mining face is carried out,and the water conductance/water conductance channel of the overlying strata on the large wide working face is accurately predicted,which fully demonstrates the effective penetration of electromagnetic wave on the large wide working face,and provides a reliable basis for the prevention of water damage on the mining face.

关 键 词：综合物探技术 矿井水害 坑道无线电波透视 音频电穿透 基岩含水层 

分 类 号：P631[天文地球—地质矿产勘探] TD745[天文地球—地质学]