摘要
针对深部高应力穿层巷道围岩变形控制难题,采用理论分析和数值计算等方法,研究穿层巷道围岩变形破坏机制及支护技术。研究结果表明:1)穿层巷道变形破坏具有不均匀性、非对称性和支护体与围岩的不耦合性,巷道以剪切变形破坏为主,拉伸破坏较少,且拉伸破坏主要集中在巷道浅部围岩。2)穿层巷道处于单一软岩时,巷道变形破坏严重,稳定性差,穿层巷道塑性破坏区主要分布在软岩中,塑性破坏区域沿着交界面增加。3)建立穿层巷道稳定性分析模型,确定不同工况下穿层巷道稳定性等级,提出穿层巷道分区联合支护方案,有效控制巷道变形破坏,提高了穿层巷道的整体稳定性。
In order to solve the deformation-control issues of deep cross-measure roadway under high stress, the deformation failure mechanism and support technology of cross-measure roadway were investigated through adopting theoretical analysis and numerical simulation. Results show that:1) the unevenness, asymmetry and the uncoupling between support object and surrounding rock are found in the roadway deformation and failure process. Meanwhile, the roadway failure is mainly caused by shear deformation, while the tensile failure is less. Furthermore, the tensile failure mainly occurs in the shallow surrounding rock of cross-measure roadway. 2) The cross-measure roadway always intensely deforms and possesses poor stability in single soft rock. The plastic failure areas are mainly distributed in soft rock, and the plastic failure areas increase along the interface. 3) The stability analysis model of cross-measure roadway is established to determine the stability level of roadway under different working conditions. Finally, the district combined support scheme of cross-measure roadway is proposed, which is effective to control deformation and damage of roadway and effectively improve the roadway stability.
作者
王雷
王琦
黄玉兵
张皓杰
江贝
许英东
鹿伟
WANG Lei;WANG Qi;HUANG Yubing;ZHANG Haojie;JIANG Bei;XU Yingdong;LU Wei(Research Center of Geotechnical and Structural Engineering,Shandong University,Jinan,Shandong 250061,China;State Key Laboratory for Geomechanics and Deep Underground Engineering,China University of Mining & Technology (Beijing), Beijing 100083,China;School of Civil Engineering and Architecture,University ofJinan,Jinan,Shandong 250022,China)
出处
《采矿与安全工程学报》
EI
CSCD
北大核心
2019年第1期112-121,共10页
Journal of Mining & Safety Engineering
基金
国家自然科学基金项目(51674154
51474095
51704125)
中国博士后科学基金特别资助项目(2017T100116
2017T100491
2016M590150
2016M602144)
山东省重点研发计划项目(2017GGX30101)
山东省自然科学基金项目(ZR2017QEE013)
关键词
深部穿层巷道
变形破坏机制
层次分析
巷道稳定
deep cross-measure roadway
deformation and failure mechanism
hierarchy analysis
roadway stability
