黑龙江科技大学学报2025，Vol.35Issue(3)：417-422,6.DOI:10.3969/j.issn.2095-7262.2025.03.011
煤矿盾构机过断层破碎带围岩的稳定性
Stability of surrounding rock in fractured zones broken by shield tunneling machine for mining
摘要
Abstract
This paper is aimed at addressing the stability of the surrounding rock in the roadway when the shield machine breaking the fault fracture zone.By taking the shield machine excavation in the belt main alley of Dongrong No.3 Mine as the engineering background,the study uses the FLAC3D software to simulate the variation characteristics of the surrounding rock stress,the displacement,the plastic zone and the strain ener-gy during the process of the shield machine passing through the fault fracture zone.The results show that when the shield machine passes through the fault,the horizontal stress on both sides of the surrounding rock in the tunneling face is concentrated with the maximum being approximately 2.4×107 Pa.The area approximately 40 meters away from the center of the fault during construction is the range affected by concentrated stress,and the deformation of the surrounding rock at the center of the fault reaches the maximum of 0.02 meters approxi-mately.The surrounding rock of the tunneling face undergoes plastic failure and extension under the action of stress,and the depth of the plastic zone at the fault layer reaches 2.5 meters.During the excavation process,the fault energy keeps accumulating,and the strain energy is approximately 2.6×104 J/m3.When the shield machine excavates within the fault fracture zone,the significant instability risk will occur,suggesting that the supporting measures should be taken in time.关键词
盾构机掘进施工/断层破碎带/巷道围岩稳定性Key words
construction of shield tunneling machine/fault fracture zone/stability of roadway sur-rounding rock分类
矿山工程引用本文复制引用
王维维,吕长庚,魏慕成..煤矿盾构机过断层破碎带围岩的稳定性[J].黑龙江科技大学学报,2025,35(3):417-422,6.基金项目
黑龙江省省属高等学校基本科研业务费项目(2020-KYYWF-0679) （2020-KYYWF-0679）
