Characteristics of Deformation and Control Technology of Coal Mine Roadway Perimeter Rock Under High Level Stress Action
Peripheral rock deformation,roof slab crushing and bottom slab bulging in coal mine roadway is a huge big challenge for roadway support.According to the measured geostress data of Exuokou Coal Mine,the geostress distribution law near the test face of the mine is grasped through theoretical analysis,and the deformation and damage mechanism of the peripheral rock of the roadway support is revealed.Numerical simulation of the support scheme of the roadway in the test face was carried out,and the optimized support scheme of H-G(hollow grouting)anchor cable+high-strength anchor rods+W-type steel belt+metal mesh+shotcrete was put forward and applied on site.Combined with the relevant data of the test roadway in the 1001 working face of Huokou coal mine,the technical parameters of the optimized roadway combination support are determined.
high level stressroadway perimeter rock deformationroadway support
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