浅埋小净距偏压隧道CRD法施工技术  

CRD construction technology for shallow buried tunnel with small clear distance and bias pressure

作　　者：赵忠孝 惠冰 苏会锋 唐志刚 田道国 张鹏飞 ZHAO Zhongxiao;HUI Bing;SU Huifeng;TANG Zhigang;TIAN Daoguo;ZHANG Pengfei(Shandong University of Science and Technology,Shandong Qingdao 266590 China;Shandong Transportation Institute,Shandong Jinan 250031 China;Jinan Yellow River Road and Bridge Construction Co.,Ltd.,Shandong Jinan 250031 China)

机构地区：[1]山东科技大学交通学院,山东青岛266590 [2]山东省交通科学研究院,山东济南250031 [3]济南黄河路桥建设有限公司,山东济南250031

出　　处：《山东交通科技》2022年第6期46-49,69,共5页

摘　　要：以济南-潍坊高速公路鹊山隧道进口浅埋段施工为依托,通过监控量测数据分析隧道围岩变形情况,得到结果:拱顶沉降最为明显,CRD法能有效减少施工过程中围岩的扰动,周边收敛在围岩压力作用下有缩小的趋势;用Midas GTS NX软件模拟CRD法的不同施工方案,发现当浅埋小净距偏压隧道中隔壁偏向于浅埋侧,先开挖浅埋侧对隧道扰动小;当中隔壁偏向于深埋侧,先开挖深埋侧时对隧道扰动较小。Based on the construction of the entrance of Queshan tunnel of Jinan-Weifang expressway, the deformation of surrounding rock of the tunnel is analyzed by monitoring and measuring data. The results show that the settlement of arch crown is the most obvious,CRD method can effectively reduce the disturbance of surrounding rock during construction, and the peripheral convergence tends to shrink under the pressure of surrounding rock. Midas GTS NX software is used to simulate different construction schemes of CRD method. It is found that when the wall of the shallow buried tunnel is biased to the shallow buried side, the shallow buried side will be excavated first, and the disturbance to the tunnel will be small. The middle partition wall is inclined to the deep buried side, and the disturbance to the tunnel is small when the deep buried side is excavated first.

关 键 词：浅埋偏压隧道 监控量测 有限元模拟 CRD法施工 

分 类 号：U455[建筑科学—桥梁与隧道工程]