TBM穿越滨海硬岩不同倾角破碎带技术  

Technology of TBM crossing coastal hard rock fracture zones with different inclinations

作　　者：齐晓明 朱家毅 罗百胜 吴燕开[2] 李树光 QI Xiaoming;ZHU Jiayi;LUO Baisheng;WU Yankai;LI Shuguang(The Fourth Engineering Co.,Ltd.,of China Railway Third Bureau Group,Beijing 102300 China;Shandong University of Science and Technology,Shandong Qingdao 266590 China)

机构地区：[1]中铁三局集团第四工程有限公司,北京102300 [2]山东科技大学,山东青岛266590

出　　处：《山东交通科技》2022年第6期38-41,共4页

基　　金：中铁三局集团有限公司科研项目,项目编号:K20-重大-01。

摘　　要：采用数值模拟软件ABAQUS建立掘进场区的仿真TBM施工分析模型,通过对比TBM穿越不同工况破碎带时的地表沉降以及隧道左右线施工竖向位移数据,发现地表沉降受控于地层硬度以及地面荷载;隧道左右线呈现出不同的沉降形态,且沉降量主要集中于右线隧道;TBM通过的破碎带倾角越大,隧道拱顶的沉降就越来越大。The numerical simulation software ABAQUS is used to establish several fine simulation TBM construction analysis models in the excavation site area. By comparing the surface settlement of the TBM through the broken zone under different working conditions and the vertical displacement data of the tunnel construction on the left and right lines, it is found that the surface settlement is controlled by formation hardness and ground load. The left and right lines of the tunnel show different settlement patterns, and the settlement is mainly concentrated in the right line tunnel. The greater the inclination of the broken zone through which the TBM passes, the greater the settlement of the tunnel vault.

关 键 词：TBM 拱顶沉降 数值模拟 破碎带 地表沉降 

分 类 号：U231.1[交通运输工程—道路与铁道工程]