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| Study on the control technology of the bottom yard roadway surrounding rock of the deep fractured shaft in Wuyang Mine |
| Zhang Gen1, Han Sheng2 |
| 1. Wuyang Mine, Shanxi Lu'an Environmental Energy Development Corporation Ltd., Changzhi 046200, China; 2. Shanxi Coalbed Methane Exploration and Development Company of Huabei Oilfield, China National Petroleum Corporation Ltd., Changzhi 046000, China |
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Abstract In order to solve the problem of surrounding rock support for deep fractured underground yard roadway, the control countermeasure of shaft bottom yard shunting line of roadway surrounding rock in Wuyang Mine was taken as the study object, the countermeasures for controlling the surrounding rock of deep fractured underground yard roadway were explored, and the combined support technology of anchor net and rope spray + hollow grouting anchor rope was given. The field industrial test showed that after adopting anchor mesh spraying + hollow grouting anchor rope joint support technology, the maximum displacement of the roadway top plate and two sides were 131.1 mm and 109.6 mm respectively, the overall deformation of the roadway was small and within the controllable range, and there was no cracking and destruction of the support system, which realized the effective control of the deep fractured underground yard roadway.
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