Applied Research of Combined Sliding Support in Complex Roof Working Face

It is one of the key issues to be solved urgently in the process of sustainable development of coal mine, which is the safe and efficient recovery of coal resources in the complex roof irregular and scattered zone and the complex roof of Jixi Mining Group Shenghe Coal Mine. In order to solve this problem, the mine carried out research on the applicability of combined sliding support under complex and difficult coal seam conditions. Using the combination of theoretical calculation and field data acquisition and analysis, the stability and working resistance of the combined sliding support under the conditions of the coal seam are studied. The research shows that under different roof conditions, the front and rear pillars of the combined sliding support has different pressure, the working resistance of the support does not exceed its rated working resistance, and the adaptability to the direct roof crushing is more serious. The combined sliding support is generally adapted to the geological conditions of the mine production, and can meet the mine production demand and achieve certain technical and economic benefits.