浅埋隧道施工中围岩应力分析  

Analysis on Surrounding Rock Stress in Shallow-Buried Bias Tunnel

作　　者：黄强[1,2] 李之达[1] 吴延贞[1] 

机构地区：[1]武汉理工大学交通学院,湖北武汉430063 [2]洛阳理工学院土木工程系,河南洛阳471003

出　　处：《湘潭大学自然科学学报》2010年第1期25-29,共5页Natural Science Journal of Xiangtan University

基　　金：国家自然科学基金项目(10372074)

摘　　要：以某隧道为背景,对浅埋偏压公路隧道在CRD法开挖条件下进行施工力学数值模拟和现场监测监控.分析开挖过程中围岩应力的变化情况,并将模拟结果与现场监测结果进行比较.结果表明:浅埋偏压隧道开挖后,围岩应力场并不对称,深埋侧的变化程度大于浅埋侧;在每一个开挖步骤前后,围岩应力变化较大;钢弦式传感器能够记录围岩应力释放的情况.The numerical simulation of construction sequence was studied for shallow embedded bias tun- nels using the method of CRD. The change of surrounding rock stress in excavating was analyzed and compared with field monitor result. The results show that the stress field is asymmetric. The change of stress in deep side is greater than it in low side. Steel string sensor can record the changing of stress in surround rock.

关 键 词：偏压隧道 围岩应力 数值模拟 现场监测 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]