大直径泥水盾构施工引起的地表沉降分析和对策  

Analysis of Surface Settlements Caused by Large-diameter Slurry Shield Driving and Countermeasures

作　　者：肖龙鸽 王超峰 赵运臣[2] 

机构地区：[1]中铁隧道集团武汉长江隧道工程指挥部,武汉421007 [2]中铁隧道集团科研所,洛阳471009

出　　处：《现代隧道技术》2008年第5期50-53,58,共5页Modern Tunnelling Technology

摘　　要：鉴于武汉长江隧道工程复杂边界条件,为了确保盾构施工安全,保护周边建筑物,因此在施工过程中,必须根据隧道覆土厚度、地质条件、周边环境条件,合理设置与控制泥水压力,确定合适的同步注浆量等,以控制非正常的地层损失、避免灾害性地层损失、控制地表沉降、避免开挖面坍塌。本文结合武汉长江隧道盾构施工经验,对大直径泥水盾构推进中对周边环境的影响因素进行分析,并就地表沉降控制和预防灾害事故及事故处理的一些体会进行总结。Environmental conditions of Wuhan Changjiang River Tunnel are complicated. In order to ensure the safety of shield driving and to protect surrounding structures, slurry pressures should be set and controlled according to tunnel cover thicknesses, geological conditions and surrounding environment conditions, and grouting should be synchronized with proper amount etc., so as to control excess and even catastrophic stratum losses, and to control surface settlements and surface collapses. This article analyzes the factors affecting environment during large-diameter shield driving incorporating the Wuhan Changjiang River Tunnel practice, puts forward some proposals for surface settlement control and accident prevention and treatment.

关 键 词：泥水盾构 地表沉降 坍塌 地层损失 

分 类 号：U455.43[建筑科学—桥梁与隧道工程] U456.1[交通运输工程—道路与铁道工程]