超深基坑施工中实施抽降深层承压水的措施

Measures of Dewatering Deep Confined Water in Extra-deep Excavation

介绍了上海轨道交通10号线龙柏新村站—龙溪路站区间隧道中间井抽降第三砂层(⑨层)承压水的试验过程,分析了试验结果,并进行了数值模拟。施工实践表明:少量、短时间、控制性抽降⑨层承压水,对周边环境影响较小。

It introduced the test process of dewatering the confined water in the third sandy layer(9th layer)at the site of middle shaft of interval tunnel(LongBai New Village station ~ LongXi Road station)of Shanghai Rail Transit Line 10,and analyzed the test results.And numerical simulation is made.The construction practice shows that the influence on the environment can be very little if dewatering a little bit amount of confined water in the third sandy layer(9th layer)in short period within control.