摘要
施工降水是困扰城市轨道交通建设的一个重要工程技术难题,特别是厦门地区的花岗岩残积土层中的降水及降水后开挖沉降问题。本文以厦门轨道交通1号线火炬园站~高殿站区间降水为工程背景,收集降水前后和隧道掘过程的地面沉降变形和水位变化数据,分析降水在花岗岩残积土地层轨道交通施工中的应用,从而可以为厦门地区管井降水在轨道交通中的应用提供依据,减少工程造价,提高施工的安全性和效率。对其降水过程前后、隧道开挖过程地表沉降变形和周边水位进行监测,结果表明厦门花岗岩残积土区域管井降水对周边沉降影响有限,隧道开挖卸荷的影响是主要控制因素。本文的研究对指导厦门花岗岩残积土富水地区降水工程具有重要的工程实践意义。
It is a very difficult problem for engineer to make sure the influence of excavation and pumping water at granite residual soil area in Xiamen.In this manuscript,construction pumping water from Huojuyuan station to Gaodian station has been illustrated and related monitoring work has been carried out during construction.The results shows that pumping water in Xiamen granite residual soil area has limited influence on surface settlement;and excavation is the main factor to induce the settlement disaster.This research is much meaningful for pumping water and excavation in Xiamen granite residual soil area in the future.
出处
《福建建设科技》
2020年第2期65-67,共3页
Fujian Construction Science & Technology
基金
厦门建设局科技计划课题资助:厦建科〔2019〕17号,福建省建筑科学研究院有限责任公司资助(KY20190010)。
关键词
花岗岩残积土
工程降水
隧道开挖
沉降变形
granite residual soil
pumping water
excavation
settlement deformation
