In order to realize the effective control of surrounding rock deformation of dynamic pressure roadways,taking 15108 air inlet channel of Jingfu Coal Industry Co.,Ltd.as the research object,based on the analysis of the stability factors of surrounding rock,the control scheme of surrounding rock deformation of pressure roadway was proposed and applied.Combined with the field conditions of 15108 air inlet channel,the high preload anchor cable was adopted to strengthen the channel,and the original anchor cable was re-tensioned.After engineering application,the surrounding rock deformation of 15108 air inlet channel was basically stable after the channel lagged 15107 working face for 60 m,in which the proximity of two sides was 165 mm,the proximity of roof and floor was 224 mm,and the overall shrinkage rate of roadway section was small,which can meet the needs of subsequent use.
关键词
采动压力/围岩变形/锚索补强/高预紧力
Key words
mining pressure/surrounding rock deformation/anchor cable reinforcement/high preload
维普
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