Study On Influence Of Limestone Water Of Taiyuan Group On Safety Mining No.10 Coal Seam And Determination Of Water Bursting Sources In Yangliu Coal Mine

Yangliu coal mine located at the Suixi county of Huaibei in Anhui province, which is next to Yangliu town.There are some larger faultages in the mining area, such as Yangliu fault, Xinchenjia normal fault, Daxinjia normal fault,which respectively control the North-south borderline of the coal mine. The exploration line No. 4 and Taiyuan mine group control the western borderline of the Yangliu coal mine,meanwhile,within the scope ordovician limestone, moreover having 12 layers Tai limestone above the Ordovician limestone, and the total thickness amounts to 133.93m. The filling cranny develop highly in No.1～4 shallow calcareous rock, which have heterogeneity. Because of the faultage moving out of original place,the calcareous rock water-bearing stratum causes the 10 main coal seam close to the Tai limestone coals, and the high-pressure Tai limestone water will cause flooding inrush threat when exploiting 10 coal seam. Therefore we must evaluate the character of calcareous rock water about the 10 main coal seam.Based on the of consulting domestic and foreign related literatures, limestone water storage conditions and the present research situation, as well as the research technique of ground water,this paper analyzed calcareous rock hydrology geological condition systematically, draw the conclusion of Tai limestone water with very weak runoff conditions using method of the Fuzzy and comprehensive judgment. Using the water bursting coefficient theory,and make using of the numerical simulation technology and evaluating the dredging characters of mine faultage, the result that the welling up water volume amounts to 593m3/h and the flooding intensity is certain big is provided.This situation does have serious influence on safe production in coal mine. Finally, this paper has usedtwo methods of Water source judgment, which is gray and fuzzy discrimination method, then validate the discrimination method of flooding water source, as a result, this two methods have high precision. It can use these two methods to distinguish synthetically on water source in Yangliu coal mining, when flooding water occur in the coal bed mining, thus adopt prevention measure correspondingly for the mine against bursting water, so as to provide scientific basis to the coal mining.