基于Hoek-Brown准则的小净距隧道节理围岩稳定性研究  

Research on Stability of Joint Wall Rocks of Small Clearance Tunnels Based on Hoek-Brown Criterion

作　　者：张亚鹏[1] 郑学贵[2] 靳晓光[1] 杨海清[1] 

机构地区：[1]重庆大学土木工程学院,重庆400045 [2]招商局重庆交通科研设计院有限公司,重庆400067

出　　处：《公路交通技术》2014年第6期48-52,57,共6页Technology of Highway and Transport

基　　金：重庆市应用开发项目(cstc2013yykf A30003);重庆市应用开发(重大)项目(cstc2013yykf C30001)

摘　　要：结合重庆东水门长江大桥和千厮门嘉陵江大桥渝中区连接隧道小净距段施工,采用Hoek-Brown强度准则估算出节理岩体的力学参数,建立基于Hoek-Brown强度准则的有限元分析模型,对隧道施工过程中节理围岩的位移、应力和塑形区特征进行研究,获得隧道施工过程中围岩位移变形较大点以及应力集中区域,并提出监控量测和加强支护的范围。In combination with construction of small clearance distance sections of Yuzhong connecting tunnel between Chongqing Dongshuimen Yangtze River Bridge and Qiansimen Jialing River Bridge, this paper adopts Hoek-Brown strength criterion to estimate mechanical parameters of joint rock mass, establishes finite element analysis model based on Hoek-Brown strength criterion, studies features of displacement, stress and plastic zone of joint wall rocks during construction of tunnels to obtain the points with large displacement deformation and centralized area of stress of wall rocks during construction of tunnels, and proposes the range of monitoring measurement and reinforcing support.

关 键 词：渝中连接隧道 应力应变 数值模拟 HOEK-BROWN准则 

分 类 号：U459.2[建筑科学—桥梁与隧道工程]