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Seismic-Geologic Condition and Prospecting Effect Analysis in Deep Buried Coal Seam Structure Prospecting

Xu Chong1,Guo Liquan2and Lin Chenghao2(1.Coal Engineering Technology Research Institute,Huainan Mining Industry(Group) Co.Ltd.,Huainan,Anhui 232001;2.School of Earth and Environment,Anhui University of Science and Technology,Huainan,Anhui 232001)  
There are relatively less geological exploration data available during the development and production processes,making use of underground roof and floor conditions to carry out reflection seismic prospecting for near roadway coal seams can get coal seam oc curence data correctly.Taking the coal seam structure seismic prospecting in a working face in the Panji No.2 coalmine,Huainan as an example,after geological condtion analysis,two lines for roof and floor drainage ways each have been designed,in which,floor drainage way line layout along roof and two walls,while roof drainage way along floor and two walls.Test determined data acquisition offset is 10m,group interval 2m,shotpoint interval 2m.Through shallow seismic sections to interprete roof and floor drainage ways have found 7 abnormal breakpoints.Contrast with revealed data has shown,the accuracy of 80% achived in interpretation of faults and anomalies.The prospecting example has demonstrated that the distance between roof,floor drainage ways and upper and lower crossheadings is 20-60m,the interpreattion for structure is signality to guide the production.
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