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| Study on support technology of roadway floor heave control under high stress pressure |
| Liu Tao1,2 |
| 1. Mining engineering institute, Taiyuan University of Technology, Taiyuan 030024, China; 2. Jinneng Group Corporation Ltd., Taiyuan 030000, China |
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Abstract Based on complex stress and large depth of auxiliary transportation roadway of some mine, the reason of soft roadway floor heave was analyzed, the original support of roadway was optimized, the floor with anchor bolt +grouting reinforcement surrounding rock was put forward. The result showed that the maximum convergence of roadway section roof and floor was 87 mm, the floor deformation became stable after 30~40 d of roof and floor deformation.
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