The Application Research Of 3-D Seismic Detection Technology In The Fourth Panel Area Of Bu Ertai Coal Mine

In coalfield exploration,three-dimensional seismic detection technology is a very effective physical exploration means,bringing huge economic benefits to mining enterprises.In this paper,the application of three-dimensional seismic exploration technology in the Sipan area of Botai Coal Mine has been used to find out the development of geological structure and the occurrence of coal seams in the Sipan area,which provides reliable geological basis for ensuring safe and efficient production and panel design.According to the geological conditions and topographic and geomorphological characteristics of production,the study area is divided into A and B areas.The three-dimensional seismic exploration wiring harness is 49 bundles along vertical and stratum directions.The construction area is 13.82 km~2,covering an area of 8.4 km~2,and 8958 construction physical points are completed.The study shows that the overall structure pattern of the four-fold is a monoclinic structure with extremely gentle strata and south-west inclination,and the dip angle is 1~3.On this basis,there are faults and gentle folds striking near EW,SN,NW and NNE directions.The occurrence pattern of main coal seams as a whole shows the law of gradual uplift from southwest to northeast.In this paper,30 combined faults are interpreted,all of which are normal faults.According to the size of the drop,there are 12 of them with a drop of 5-10 m and 18 with a drop of less than 5 m.According to the classification of reliability,there are 20 reliable faults,6 more reliable faults and 4 less controlled faults.The predicted results show that the thickness of 3-1 coal seam is relatively stable,and the coal thickness is about 3 m;the thickness of 5-1 coal seam varies greatly from2 m to 7 m,and the overall performance is gradually thinning from west to east;the thickness of 6-2 coal seam is relatively stable,and the overall change is small,and the coal thickness is generally between 2 m and 3 m.In 2-2,the thickness of coal seam is unstable.The thickness of coal seam is about 0-1.5m,and the dip angle is 1-3 degrees.It presents a monoclinic structure with extremely gentle stratum and inclined to the southwest.It is found that BF23 and BF35 interpreted by previous data are not faults,but caused by the bifurcation of coal seams.The line runs through the whole area from north to South and extends northward and southward to the outside of the area.