Water Inrushing Disaster Studying Of 1000m Deep Mine In Yao Jiashan

Coal resource is the important guarantee of national economic take-off and security in our country. In many of mines our country, hydrogeological conditions are relatively complex, water disaster threats the mining safety. In some mines of our country, coal reserves under the threats of water disaster accounts for a big proportion of the economic recoverable reserves. So we should liberate the coal reserves under the threat of water disaster letting these mines have subsequent resources to exploit.Yao Jiashan coal mine containing rich coal, economic minable seam is 4 +5, 8 + 9 # coal seam. The coal seam is thicker, but they buried very deep in most area. It's has complex hydrogeological conditions and it close by the Ordovician aquifer, so threated by water disaster is more serious. If all forms of water in the mine water into the mine from the roof and floor, especially when the water bursting from floor, it's not only a threat to the safety of coal production, but also a serious threat to the safety of underground staff.By analyzing geological data, reach the main factors that affect water inrushing and water gushing of 4+5, 8+9# coal seam:geological factors,hydrographic factors, mining factors. By procedure formula and theoretical formula to predict the height of “roof water flowing fractured zone” and “the next three-zone”, the results show that: the height of “roof water flowing fractured zone” predicting results by two methods discrepancy even larger, butthe height of “floor water flowing fractured zone” predicting results by two method are close. By numerical simulation to further predict the height of “roof water flowing fractured zone” and “floor water flowing fractured zone”, the results show that: procedure formula of “roof water flowing fractured zone” are not apply to kilometer deep mine; Procedure formulas of "floor water flowing fractured zone" are still apply to kilometer deep mine. To predict water inrushing risk of 4+5, 8+9 # coal seam with the methods of water inrushing coefficient and extreme water pressure, it turn out to that: When mining 4+5# coal seam,the water inrush hazard will not occur in most zone;when mining 8+9# coal seam,the water inrush hazard will occur in most zone. Predicted the mine water inflowing when mining 4+5# coal seam with the method of large-well, it turn out to that: when mining 4+5# coal seam, normal water inflowing is 3035.59 m3 / d(126.48 m3 / h). Maximum water inflowing is 4403.47 m3 / d(183.48 m3 / h). On the basis of mine water inflowing and the height of mine drainage, checking the equipment parameters of mine drainage device selected the mine drainage equipment models.