Research On Mining Safely Under Water-body Of The Second Mining Areas In Southern Daping Mine

This paper starts from analysis the trait of the mining under water-bodies .It is based on an adequate acquaintance to the second mining areas in Southern Daping Mine under water-bodies of home and abroad. They are ascertained that the key technology and the related problems to insure the safety of mining under water-body on the second mining areas in Southern Daping Mine. At the same time, the research content and the research technique are ascertained for resolving these problems.The top coal caving is chose to intensive study from the layer mining, bases on the hydrogeology of Daping mine and aggregative indicator of technique and economy. bases on a lot of practice information ,the empirical formula of water flowing failure zone is be achieved that is suitable to the top coal caving by the regression analysis method in this paper.and UDEC numerical simulation method are applied to forecast the height of water flowing failure zone on Daping mine. The upper aquifuge is the main terrane for water proof, basing on the height of water flowing failure zone and the main terrane for water proof criterion of definition. It is safe and doable to mining under water-body of the second mining areas in Southern Daping Mine.For checking the reliability of research conclusion, the S2S2 working face is chose to mine for security technical analysis of face.Through Drilling overburden failure observational method,conclusions of the study is proved to be reliable and expected results are accurate,and it is accurate that theoretical research method and technology route. It can be applied to the engineering.