岩溶地区深埋地铁车站抗浮问题浅析

Anti-floating problems of deep buried subway stations in karst area

经济建设和人口基数的快速增长,使人们对城市建设和发展有了更高的要求,对地下空间的利用也日渐增加,例如地下室及地下轨道等工程。以贵阳市轨道交通2号线的北京西路站深埋车站为研究对象,结合贵阳市降雨资料、场地岩溶发育特征与专门水位监测孔数据,分析影响北京西路站地下水动态变化特征的相关因素,预测站点可能出现的最高地下水位,以此为依据确定场区的抗浮设防水位,并综合站点结构荷载条件,分析北京西路站可能的抗浮问题及工程危害。

With the rapid growth of economic and population,people have a higher request for the urban construction and development. Exploitation of underground space is also increasing,such as the construction of basements and subways. In this paper,we took Beijing Xilu Station of No. 2 Railway of Guiyang as research object,using the rainfall data,the karst development characteristics and the water level monitoring data to analyze the factors influencing the dynamic change of groundwater around Beijing Xilu Station. We predicted the highest possible water level around the station,determined the anti-floating water level,and analyzed the possible anti-floating problems of the station.