煤炭与化工2024，Vol.47Issue(3)：17-21,5.DOI:10.19286/j.cnki.cci.2024.03.004
相邻巷道断面形状选择及联合支护技术研究
Study on cross-section shape selection and combined support technology
裴雁飞 1李永军1
作者信息
- 1. 山西马军峪煤焦有限公司,山西长治 046500
- 折叠
摘要
Abstract
In order to solve the problems of large deformation and difficult support of roadway surrounding rock under the condition of high stress soft rock,No.2 coal of Shuguang Mine takeng as an example,the outside-type layout of roadway excavation was adopted.The section shapes of adjacent roadways were selected as"rectangular-rectangular","rectangular-special-shaped"and"special-shaped-special-shaped"respectively.Numerical simulation was used to study the deformation characteristics of surrounding rock,the distribution of lateral supporting pressure of surrounding rock and the distribution law of surrounding rock plastic zone after the excavation of the lower roadway.The results showed that the"special-shaped-special-shaped"roadway was smaller than the"rectangular-special-shaped"roadway and the"rectangular-rectangular"roadway,and the surrounding rock displacement,lateral support stress and plastic zone of the surrounding rock were the smallest.The shape-shaped roadway was used as the cross-section shape of the roadway along the roadway.Three-dimensional combined support technology was adopted between adjacent roadways,and through on-site monitoring,the maximum roof subsidence was 144mm,the maximum floor heave was 91mm,and the maximum displacement of two sides was 315mm,which reduced the deformation of surrounding rock in the lower roadway.关键词
沿空掘巷/断面形状/数值模拟/联合支护Key words
roadway excavation along goaf/cross-section shapes/numerical simulation/joint support分类
矿业与冶金引用本文复制引用
裴雁飞,李永军..相邻巷道断面形状选择及联合支护技术研究[J].煤炭与化工,2024,47(3):17-21,5.
