Application Of Integrated Geophysical Prospecting For Water Hazard Source In Juye Coal Mine

In recent years,the frequent occurrence of water seepage accidents in coal mines in China has brought great harm to the normal production of coal mines and the life and safe of front-line workers.Therefore,it is particularly important to find out the complex hydrogeological conditions of the mining area,especially the water rich conditions of the goaf,structure and direct aquifer.Among the many geophysical methods for detecting the water rich property of the main coal seam water hazard source,the transient electromagnetic method is a relatively economic,simple and efficient method after a large number of practical cases at home and abroad.Based on the supplementary exploration work in the third and second mining areas of Hongqi coal mine,Jiaxiang County,Shandong Province,this paper makes a comprehensive geophysical exploration application.The main work in this area includes the work of ground transient electromagnetic,underground transient electromagnetic,ground drilling,underground drilling,mining and so on.It comprehensively explores,speculates and verifies the same area.There are mainly two kinds of geophysical exploration work: ground and underground transient electromagnetic method.According to the two kinds of detection results,the abnormal area is delineated,and the borehole verification is arranged for different abnormal areas.According to the collected geophysical exploration data and borehole verification data,a summary analysis is made to evaluate the application effect of comprehensive geophysical exploration technology.According to the analysis of detection data and verification data,the surface transient electromagnetic can control the water yield of the whole area well,reflect the structural water conducting area to a certain extent,and have a good guiding significance for the water exploration and drainage work of the whole area and the next underground geophysical exploration layout;the underground transient electromagnetic exploration can further verify the detection of the underground tunnel and the abnormal area near the working face,and at the same time,find more detailed The resolution of small abnormal area is higher than that of ground TEM.The comprehensive detection results can be mutually verified,and the later drilling also further verified the detection results.The detection of the same area through surface geophysical prospecting and underground geophysical prospecting can provide scientific and effective treatment for the main mining coal seam water disaster.This paper consists of 43 figures,9 tables and 58 references.