Abstract:
The control of surrounding rock of roadway has always been a key technical problem to be solved by coal enterprises.Because of the great effect of engineering disturbance on the small coal pillar island working face, resulting in roadway surrounding rock's local stress concentration, obvious fracture development and poor coal pillar bearing capacity, leading to the overall larger deformation of roadway surrounding rock.In view of the above situation, this paper takes the No.12062 working face of Huayang No.1 Mine as the research object, and uses the combined support form of anchor cable strengthening support+shelting(π steel+single-pillar)to control the total deformation of surrounding rock of roadway, and provides a concrete support scheme.The actual application results of the mining roadway show that the maximum deformation of the lower roadway wall and the roof and floor are 460 mm and 378 mm, respectively, and the actual deformation of the roadway surrounding rock can fully adapt to the safety production needs of the underground, with obvious surrounding rock support optimization.