上覆不明采空区积水危险性判定技术研究

为确定胜利煤矿10#煤层上部采空区积水范围，保证煤层开采过程中避免受到水害威胁，运用板壳理论和关键层理论，建立胜利矿开采10#煤层采空区覆岩变形破坏的力学分析模型，结合经验公式法和数值模拟方法得出10#煤层各分区的最大导高和底板破裂的最大深度，通过上部采空区积水危险性判定准则，得出开采10#煤时将被上部6#煤层采空区积水影响，而不会受到2#煤层采空区积水的影响，为该矿防治水方案的提出和安全开采具有理论指导意义和实际应用价值.

Study on hazard determination of water accumulation in the uncertain mining gobs

In order to determine the water area of the upper goaf of the 10# coal seam of Shengli Coal Mine and avoid the threat of water damage in the process of coal seam mining， the mechanical analysis model of deformation and failure of overburden in goaf of 10# coal seam in Shengli Mine is established based on the theory of plate and shell and the theory of key strata. The maximum conductivity height and the maximum depth of floor fracture in each subarea of 10# coal seam are obtained by combining empirical formula method and numerical simulation method. Through the criterion for judging the danger of water accumulation in the upper goaf， it is concluded that the 10# coal mining process will be affected by the water in the upper 6# coal seam， while not by the water in the 2# coal seam， which is of theoretical significance and practical value for the proposal of mine water prevention and safe exploitation.