煤炭与化工2025，Vol.48Issue(9)：11-15,5.DOI:10.19286/j.cnki.cci.2025.09.003
重复采动影响下巷道破坏特征及支护方案优化设计研究
Research on roadway failure characteristics and support scheme optimization design under the influence of repeated mining
雷俊平 1任帅 1史向前 1王海龙1
作者信息
- 1. 陕西彬长小庄矿业有限公司,陕西咸阳 713500
- 折叠
摘要
Abstract
In order to obtain the optimal support scheme of roadway under the influence of repeated mining,Shaanxi Binchang Xiaozhuang Mine was taken as the research background,and the plastic failure characteristics of roadway under different support schemes were simulated by 3DEC discrete element numerical simulation experiment method.The optimal spacing of bolts under different support schemes was obtained,and the optimal support scheme was given.The results showed that under the disturbance of repeated mining,the failure mode of roadway was mainly shear failure,and the failure range of the left goaf side of roadway was smaller than that of the other side.This result was caused by pressure relief after mining of the upper working face.As the row spacing between bolts decreased from 900 × 900 mm to 800 × 800 mm,the development degree of rock cracks around rectangular roadway decreased,the expansion range of cracks decreased,and the deformation of surrounding rock of roadway decreased continuously.Considering the support effect and support cost of the roadway,the row spacing between the bolts was 850 × 850 mm,and the combined support form of the roadway was given when the mining influence was large.关键词
巷道围岩/重复采动/离散元数值模拟/支护优化设计/联合支护/围岩变形量Key words
roadway surrounding rock/repeated mining/discrete element numerical simulation/optimized design of support/combined support/surrounding rock deformation分类
矿业与冶金引用本文复制引用
雷俊平,任帅,史向前,王海龙..重复采动影响下巷道破坏特征及支护方案优化设计研究[J].煤炭与化工,2025,48(9):11-15,5.
