超大型调蓄池的基坑设计与分析

Design and Analysis on Foundation Pit of Ultra-large Storage Tank

随着城市化进程的加快,城镇雨污水的径流量不断增大,对雨污水径流起削峰作用的调蓄池占地面积及深度也在相应增加。通过对某一个大型调蓄池的基坑工程实例,探讨此类基坑设计难点,在围护选型、支撑布置、止水措施等方面进行优化,保证施工安全,缩短周期,减小环境影响,并节约成本,可供今后类似工程参考。

With the acceleration of urbanization and the continuous increase of runoff volume of town rainwater and sewage, the land area and depth of storage tank playing a peak clipping role of the runoff of rainwater and sewage are also relatively increase. Taking the foundation pit of a large storage tank as an example, the design difficulties for this kind of foundation pit are discussed. The enclosing selection,support arrangement and water-stop measures are optimized to guarantee the construction safety, to shorten the period, decrease the influence on environment and save the cost, which can be referred for the similar projects in the future.