Ⅴ级围岩条件下深埋隧道开挖方法数值模拟分析  

Numerical Simulation Analysis of the Excavation Methods of Deep Tunnels under Grade Ⅴ Surrounding Rock Condition

作　　者：张佳华 宋嘉诚 马宗宇 ZHANG Jia-hua;SONG Jia-cheng;MA Zong-yu(Work Safety Key Lab on Prevention and Control of Gas and Roof Disasters for Southern Coal Mines,Hunan ProvincialKey Laboratory of Safe Mining Techniques of Coal Mines,Hunan University of Science and Technology,Xiangtan,Hunan 411201,China;School of resource environment and safety engineering,Hunan University of Science and Technology,Xiangtan,Hunan 411201,China)

机构地区：[1]湖南科技大学南方煤矿瓦斯与顶板灾害预防控制安全生产重点实验室,煤矿安全开采技术湖南省重点实验室,湖南湘潭411201 [2]湖南科技大学资源环境与安全工程学院,湖南湘潭411201

出　　处：《企业技术开发》2018年第11期5-8,共4页Technological Development of Enterprise

基　　金：国家自然科学基金资助项目“基于非线性能量耗散理论的盾构斜井/隧道掘进面稳定性研究”(51804113);湖南科技大学博士启动基金资助项目“浅埋隧道稳定性的能耗分析与可靠度设计”(E51768);湖南科技大学博士后科研基金资助项目“基于极限分析法的煤矿软岩巷道破坏机理研究”(E61610);南方煤矿瓦斯与顶板灾害预防控制安全生产重点实验室开放基金资助项目“软弱围岩条件下地下洞室稳定性的能耗分析”(E21734)

摘　　要：文章针对三台阶法和CD法,采用FLAC3D软件对Ⅴ级围岩下的深埋隧道进行数值模拟分析。研究结果表明,与三台阶法相比较,CD法能有效减小深埋隧道的主应力范围、塑性区范围以及位移,但也更容易产生应力集中效应。建议在实际工程中采用CD法开挖,围岩控制效果更好。According to the three bench method and CD method,the numerical simulation analysis of deep tunnels under grade Ⅴ surrounding rock condition was carried out by FLAC3D.The results showed that,the CD method can reduce more effectively the principal stress range,plastic zone range and displacement than the three bench method.However,the CD method is also easier to produce the stress concentration effect.On the whole,the effect of surrounding rock control of deep tunnels is better using the CD method under grade Ⅴ surrounding rock condition.

关 键 词：深埋隧道 三台阶法 CD法 数值模拟 围岩 

分 类 号：U455.4[建筑科学—桥梁与隧道工程]