doi:10.16186/j.cnki.1673-9787.20200300

Received:2020/03/02

Revised:2020/05/20

Published:2021/05/15

Deformation analysis and control of surrounding rock of deep soft rock roadway

ZHANG Wenlong, FAN Lidan

School of Civil Engineering， Henan Polytechnic University ，Jiaozuo 454000 ， Henan， China

Abstract:In order to solve the problem of difficult support for deep soft rock roadway， the mechanical properties of the surrounding rock were first tested. Then， based on the study of deformation characteristics of surrounding rock of different buried deep roadway， the deformation and control methods of surrounding rock of deep roadway with high geostress were studied from two aspects of roadway excavation and surrounding rock support. The results showed that with the increase of roadway burial depth， the deformation of roadway surrounding rock increased linearly. When mining in the deep high-in-situ stress environment， the deformation of full-section excavation method was the largest， followed by step method， and CD method was the smallest. When the combination of flexible support and rigid support was adopted， the surrounding rock deformation were minimized. Combined support technology could fully release the surrounding rock deformation energy， give full play to the self-supporting ability of surrounding rock and work together with the supporting system， and could more effectively control the surrounding rock deformation of deep soft rock roadway， so as to ensure the surrounding rock stability of the roadway.

Key words:deep soft rock roadway;deformation of surrounding rock;high geostress;combined support

 深部软岩巷道围岩变形分析与控制_张文龙.pdf