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| Study on three-dimensional geological characteristics of the first mining area in Xiaobaodang Mine |
| Yang Biao, Li Jie, Yang Xiaoyong, Xi Yimiao |
| Shaanxi Xiaobaodang Mining Co., Ltd., Yulin 719302， China |
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Abstract The complexity and variability of geological structure seriously restricted the production of the site. The traditional geological exploration was difficult to achieve all-round investigation, and the results had large errors, which was difficult to meet the actual production needs. In view of the above problems, this paper selected the first mining area of Xiaobaodang No.1 well in northern Shaanxi as the research background, and used the method of three-dimensional seismic exploration to carry out exploration operations on the fault geological structure of the mining area and the thickness change trend of the overlying rock and soil overburden. The exploration research showed that 9 faults were found in the first mining area of Xiaobaodang No.1 well, all of which were normal faults. Among them, 2 faults were distributed in No.2-2 coal seam, 7 faults were distributed in No.5-2 coal seam, and the fault drop was relatively small. The thickness of overburden rock and soil on No.2-2 coal was 50-115 m. The thickness of overburden in exploration area gradually becomed thicker from northeast to southwest, and the maximum thickness was 115 m. When mining the southwest of the area, a large working resistance support should be selected. When mining in the northeast of the mining area, the supervision of mine water inflow and air leakage should be strengthened to prevent and control sudden disasters.
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