关键词: 浅埋深, 综采工作面, 顶板来压, 支架工作阻力, 现场监测

Abstract: The shallow depth of fully mechanized mining face in shallow coal seam is not conducive to the exploitation of coal seam and the stability of surrounding rock.In order to explore the roof pressure law of the fully mechanized mining face in Xinjing Mine.Based on the geology and mining conditions of the 8118 working face of the mine.The method of numerical simulation is used to analyze the roof collapse morphology,roof settlement and roof stress distribution in the fully mechanized mining face of shallow coal seam.At the same time,the working resistance of the bracket during the initial pressure and periodic pressure is monitored on site.The results show that during the initial pressure,the rock layers between the upper and lower key layers are separated,and the upper key layer is bent downward without breaking.The disturbance continues to pass upward during the period of pressure,and a large area of collapse occurs in the upper key layer.The working resistance of the pressure bracket has a large increase,which is about 61%.

Key words: Shallow depth, Fully mechanized mining face, Roof weighting, Working resistance of hydraulic support, Field monitoring