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| Study on failure and support technology of soft rock inclined roadway under excavation disturbance |
| Zhang Xu |
| College of Safety and Environmental Engineering,Shandong University of Science and Technology, Qingdao 266000, China |
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Abstract The transportation roadway in Yili No. 1 Mine was taken as an example to study the failure mechanism and support technology. The failure mechanism of transportation roadway of No.3 Coal Seam was obtained through theoretical analysis and field observation; FLAC3D was used to simulate the original support scheme and two proposed support schemes for the transportation of the roadway. The results showed that the main failure form of the roadway was shear failure, and the failure location was concentrated at the two shoulders and footings of the roadway; Through the simulation and comparison of different support schemes, the optimal support measures of anchor mesh cable shotcrete + roof grouting were determined. Finally, the field industrial experiment of the proposed support scheme was carried out. The results showed that the support scheme effectively controlled the surrounding rock deformation of transportation roadway, and provided a basis for the support design of deep high stress soft rock inclined roadway.
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