城市快速轨道交通建设对地下水环境影响分析——以西安市城市轨道交通二号线为例  

Analysis on the influence of city rail transit construction on ground water environment:taking Xi′an urban rail transit second line as an example

作　　者：陈爱侠[1] 杨晓婷[1] 王文科[1] 

机构地区：[1]长安大学环境科学与工程学院,陕西西安710064

出　　处：《西北大学学报（自然科学版）》2008年第2期313-317,共5页Journal of Northwest University（Natural Science Edition）

基　　金：陕西省国际科技合作计划基金资助项目(2006kw-06)

摘　　要：目的分析研究轨道交通建设对地下水环境的影响途径,探讨轨道交通建设与城市环境协调发展的思路。方法结合西安市城市快速轨道交通二号线工程区的水文地质条件和工程施工方案,定性分析工程在施工期对地下水环境的影响,利用VisualMODFLOW软件定量分析工程在营运期对地下水流场的影响。结果工程在施工期只有张家堡车站采用轻型井点降水,预测降水量为10 454.15 m^3/d;89%的区间隧道采用盾构法和浅埋暗挖法施工,不需工程降水,11%的区间隧道采用高压旋喷注浆桩间止水的控水方式;工程在营运期对地下水的影响无论在抬升区还是下降区,潜水位的变幅基本在0.04-1.75 m之间。结论根据工程在不同阶段对地下水环境的影响程度,采取必要的减缓措施,使轨道交通建设对地下水环境的影响减少到最小。Aim To analyze the impact of city rail transit construction on ground water environment and discuss the harmonizing development idea of them. Methods Based on the hydrogeological conditions and the project construction scheme of second line project in Xi＇an city rapid rail transit, using the VisuaIMODFLOW software to quantitatively measure the ground water flow field in project area during construction in order to qualitatively analyze the influence of the project on the precipitation was only used in ground water environment. Results The research results showed that light well point Zhangjiabao station in the construction period and the forecast precipitation there was 10 454. 15 m^3/d. In the 89% sector of tunnel the shield method and shallow burying subsurface excavation method were used and there is no need for project precipitation ; in the 11% sector of tunnel, the jet grouting snagging between piles was used to control water. In short the influence of project in operation period to ground water regardless of lifting or letdown area, ground water level amplitude was basically between 0.04 - 1.75 m. Conclusion Some measurements are put forward according to the impact in different stages, in order to minimize the influence in subway construction.

关 键 词：城市快速轨道交通 水文地质 地下水环境 

分 类 号：X820.3[环境科学与工程—环境工程]