Abstract:
Aiming at the problem of large deformation and difficult maintenance of deep roadway under the influence of high geo-stress and strong dynamic pressure, taking the surrounding rock control of 1105 roadway in Hudi Coal Industry as an example, the deformation characteristics of deep soft rock roadway and the control countermeasures of surrounding rock are analyzed and discussed by means of geological data analysis, surrounding rock morphology observation, borehole peeping of surrounding rock fracture and field test.The results show that the deep high geo-stress, syncline tectonic stress, advanced mining stress, roadway crossing layer and surrounding rock fracture development are the main causes of roadway deformation.Based on the deformation characteristics and mechanism of 1105 roadway, the active and passive combined support countermeasures of grouting concrete-filled steel tube + high-strength anchor mesh cable spray support' for strong dynamic pressure roadway are proposed, which can provide reference for surrounding rock control of deep roadway under similar conditions.