宝鸡石油机械厂34#高层住宅楼工程降水方案设计

ENGINEERING PRECIPITATION DESIGN FOR CONSTRUCTION OF A HIGH BUILDING IN BAOJI

根据拟建场地的地层结构及地下水条件,结合周边环境和基坑支护、降水要求,确定合理的降水模型及基本设计计算参数,进行降水井设计计算。本设计采用管井方案,设计中最重要的是确定管井数量,先预设一个滤水管进水部分长度,计算出管井数量,然后进行反算、验算,遵循技术可行、节约费用的原则,最终确定出合理的井点数量。降水井投入使用后,基坑内侧的少量渗水,运用集水明排的方法排泄,取得了良好的效果。管井与集水明排相结合进行降水的方法在宝鸡市区得到了广泛应用。

According to the stratigraphic structures and the conditions of underground water in the area where the high building is to be built, and combining with surround environment and the hole excavated for building foundation supports and protects, and reasonable deter- mination of precipitation model and basic design parameters, design and calculation have been made for precipitation wells. In the tube well plan adopted in the design, the number of the tube wells is the most important. It includes： firstly presupposing an entering water part of a strainer, secondly calculating the numbers of tube wells, then reverse calculation, checking calculation, following technique feasibility and cost, and finally determination of reasonable numbers of tube wells. When the precipitation wells have been used, a little seepage water occurs in the holes excavated for building foundation inside. Application of catchment and open drainage has obtained good result. Combination of tube wells and catchment clearly arranges to precipitation has been widely used in Baoji city.