关键词: 深井巷道, 锚注支护, 围岩控制, 钢丝绳网, 喷射混凝土

Abstract: Large deformation and difficult support of the surrounding rock of deep mine preparation roadway, affect the safe and efficient production of coal mine. Based on the geological conditions of track-dip roadway of the district in Pingdingshan No.5 Mine, with theoretical analysis and industrial field test, the paper studied the deformation causes, deformation characteristics and support principles for track-dip roadway, and in-situ support test. The results show that, (1) the surrounding rock stress is higher, the lithology is poor and coal face mining effects, and bolt-grouting support method and its parameters are unreasonable, which is the main reason for the surrounding rock deformation and failure of track-dip roadway; (2) the principles of full-section support, strengthening bearing capacity of surrounding rock, and flexible shotcrete support are proposed. The technical parameters of the wire-rope mesh shotcrete structure, grouting bolt and grouting parameters are determined. The wire-rope mesh bolt-grouting support was carried out in repair of track-dip roadway. After renovation, the track-dip roadway was sustained on its both side coal faces mining, which could meet the production safety requirements. Therefore, the field test was successful.