西宁市轨道交通一号线抗浮水位数值模拟研究  

Reseach on the Numerical Simulation of Anti-Floating Water Level of Xining Rail Transit Line

作　　者：张晓宇[1,2] 曹峰 杨智国[1,2] 罗选红 ZHANG Xiao-yu;CAO Feng;YANG Zhi-guo;LUO Xuan-hong(China Railway First Survey And Design Institute Group Co.,Ltd.Xi’an,Shaanxi 710043;Shaanxi Railway and Underground Traffic Engineering Key Laboratory,Xi’an 710043)

机构地区：[1]中铁第一勘察设计院集团有限公司,陕西西安710043 [2]陕西省铁道及地下交通工程重点实验室(中铁一院),陕西西安710043

出　　处：《地下水》2020年第3期56-59,共4页Ground water

基　　金：中铁第一勘察设计集团有限公司科研项目(17-11)。

摘　　要：西宁盆地含水层主要为第四系松散岩类孔隙潜水含水层和新近系碎屑岩类孔隙裂隙含水层。在水文地质调查、水文试验、地下水动态长期监测、大量勘探资料的基础上,刻画了研究区三维地质结构模型以及含水层分布特征,建立了西宁市地下水的三维流数值模型。通过对研究区降雨量、洪水等水文资料的分析,预测了已发生连续丰水年组遭遇百年一遇洪水情形下的地下水位,在次基础上确定了西宁市轨道交通一号线抗浮设防水位。研究结果表明整个轨道交通一号线地下水位上升幅度在2. 18~4. 73 m,各车站均受到抗浮设防水位的影响,设计需采取相应的抗浮设防措施。The aquifers in Xining Basin are mainly quaternary-system loose-rock pore-water aquifers and neogene clastic-rock pore-fissure aquifers.Based on hydrogeological survey,hydrologic test,long-term monitoring of groundwater dynamics and a large amount of exploration data,the three-dimensional geological structure model and aquifer distribution characteristics of the study area are described,and the three-dimensional flow numerical model of groundwater in Xining City is established.Based on the analysis of rainfall,flood and other hydrological data in the study area,the groundwater level for the continuous water-rich year group that encounters the worst flooding in 100 years is forecasted,and the anti-floating water level of Line 1 of the rail transit in Xining City is determined.The research results show that the rise of underground water level in the whole rail transit line 1 ranges from 2.18 to 4.73 m;all stations are affected by the anti-floating and fortifying water level,so corresponding anti-floating and fortifying measures shall be taken in the design.

关 键 词：西宁市 轨道交通 抗浮水位 数值模拟 

分 类 号：P641.74[天文地球—地质矿产勘探]