摘要
某地铁隧道穿越含有地下水的卵石层,为保证隧道施工安全对卵石层中的地下水进行了人工降水,由于地下水的流失,造成卵石层的地层沉降,进而严重影响地表的沉降量与沉降范围。本文通过类比土体固结沉降理论,得出了卵石层因排水造成地层沉降的分析计算方法,根据附加应力法计算出卵石层因地下水流失造成的地层沉降量,分析因卵石层的地层沉降对地表沉降产生的影响。通过对此卵石层排水引发的地层沉降的分析与研究,得出计算卵石层沉降的方法可为以后的工程实践提供宝贵的工程经验。
When a subway tunnel crossed the pebble layer containing groundwater,we implemented the artificial rainfall in order to ensure the safety of the tunnel. The loss of groundwater caused the sedimentation of pebble bed,and then seriously affected the surface settlement and the scope of the sedimentation. This paper obtained the analysis and calculation method of pebble bed's sedimentation due to drainage by analogy to the theory of soil consolidation settlement,and calculate the strata subsidence of the pebble bed caused by groundwater erosion according to the additional stress method,and analyzed of the strata subsidence of pebble bed'impact on the ground surface subsidence. Through analyzing and studying the strata subsidence due to this pebble bed drainage,this paper obtained the method for computing the settlement of pebble bed to provide valuable engineering experiences for engineering practice in the future.
出处
《施工技术》
CAS
北大核心
2017年第S1期741-743,共3页
Construction Technology
基金
中国铁建大桥工程局集团有限公司乌鲁木齐市轨道交通1号线工程02标段项目
关键词
地下水
卵石层
地层沉降
沉降量
groundwater
pebble bed
strata subsidence
settlement
