Mechanism And Comprehensive Treatment Of The Steeply Inclined Seam Subsidence Of Liudaowan Coal Mine In Xinjiang

It is a new topic that rule of ground movement in steeply inclined seam mining, the coal seam angle is one of important factor of deciding the rule of ground movement,the overlying rock of steeply inclined seams mining have different homogeneousness inhorizontal orientation. It's complexity make the research of this kind of problem process very inadequate.On the foundation of Liudaowan mining practice,according to the complex mining andgeological conditions of deep excavation in Liudaowan mine,numerical simulation is carried out for studying on the rule of strata movement and surface subsidence due to coal extraction in Liudaowan mining district. At the end, comprehensive treatment is suggested.. The result mainly include:1. Collecting mining data, subsidence data and hydrogeology data.2.Study the geologic hazard style, subsidence and geosuture are most prominence.3. Measurement of settlement is carried and the data is analysised.4. The subsidence mechanism of steeply inclined seam is studied, numerical simulation is carried out.5.On the foundation of the subsidence status, comprehensive treatment is suggested.The results are of tutorial impact for practical mining and governing of subsidence hazards.