In order to solve the problem of supporting large section soft rock roadway in the 4310 working face of Zhaozhuang Mine, it was found that the joint fissure in the roof rock formation was developed by the drilling peephole, with a large area. Based on the reinforcement arch theory, it was proposed that the large section roadway of 4310 working face adopted the extended anchor bolt and the anchor support system, and the shotcrete was closed. The numerical results showed that the optimal parameters of the bolt were 1 000 mm, the row distance was 900 mm and the diameter of the bolt was 22 mm. Through the observation of the surface displacement of the roadway, the diameter of the bolt was measured by the FLAC numerical simulation. The deformation of the surrounding rock of the roadway was well controlled.
郑 超,杨峰峰,张巨峰,余 岚. 基于FLAC的大断面软煤巷道支护参数优化[J]. 煤炭与化工, 2018, 41(4): 1-4.
Zheng Chao, Yang Fengfeng, Zhang Jufeng, Yu Lan. Optimization of support parameters for large section soft roadway based on FLAC. CCI, 2018, 41(4): 1-4.