【摘要】 针对西安地铁黄土地层深基坑降水的特殊性要求和特殊作用,在综合分析各种降水方案的基础上,选择坑外深管井降水方案,并对基坑涌水量计算公式和参数进行了比选。结合具体工程实例,在同一个地铁车站深基坑针对不同的区段给出了不同的降水井布置形式,取得了较好的降水效果。并指出了黄土地区降水的特殊性和复杂性。更多还原

【Abstract】 Because of the special requirements and the effects of precipitation on deep excavation in loess formation of Xi’an subway station,and base on a comprehensive analysis of various precipitation programs,this paper selects a precipitation method outside the deep excavation,and studies the pit formula and parameters.A different layout of dewatering well in subway deep excavation is adopted for a specific example of metro projects,and the precipitation technique achieved good results.Finally,this paper points out that the particularity and complexity of precipitation technique in loess areas will have some guidance for metro construction precipitation.更多还原