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| Analysis of mine water damage factors and mining under pressure of Ordovician limestone water in Xinjing Mine |
| Li Zhenjiang |
| Shanxi Xinjing Coal Industry co., Ltd., Yangquan 045000, China |
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Abstract Based on the hydrogeological conditions of Xinjing Mine, the mine water damage factors such as ground water, underground aquifer water and goaf water have been investigated and analyzed. The analysis shows that the water conduction fracture zones formed by No.8, No.9 and No.15 coal seams in Xinjing Mine will conduct the overlying goaf, and the accumulation water in the goaf has a certain threat to the safety production of the mine. At the same time, the floor water outburst coefficient of the main minable coal seam in the Ordovician limestone water pressure area of mine field is calculated, which is less than the critical water outburst coefficient. The analysis indicates that the Ordovician limestone water pressure area is a relatively safe area.
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