Research on deformation characteristics and control technology of surrounding rock in fully mechanized mining face continuously passing through empty roadway
Abandoned empty roadways are often encountered in the mining process of fully mechanized mining face. When the mining is pushed to the vicinity of the empty roadway, the mine pressure appears violently, threatening the safety of personnel and equipment in the working face. Based on the engineering background of 15104 fully mechanized mining face in Wangyun Coal Mine, the deformation control technology of surrounding rock in continuous goaf is studied by means of theoretical analysis and field test. Affected by the advance abutment pressure, the coal pillar between the working face and the empty roadway is broken, and the bearing capacity is reduced, which is the main reason for the severe mine pressure. A mechanical model was established for the key block B after the roof fracture, and the support resistance was calculated to be 3.53 MPa. By comprehensively comparing different deformation control methods of empty roadway, the method of full space filling with high water material is determined. After the filling is completed, during the empty roadway, the pressure on the working face is stable, the maximum dynamic load coefficient is 1.15, no roof fall occurs, and the degree of spalling increases, but the increase is small, which realizes safe production.
霍日伟. 综采工作面连续过空巷围岩变形特征及控制技术研究[J]. 煤炭与化工, 2025, 48(12): 43-46.
Huo Riwei. Research on deformation characteristics and control technology of surrounding rock in fully mechanized mining face continuously passing through empty roadway. CCI, 2025, 48(12): 43-46.