盖挖逆作法基坑生产性抽水试验施工工艺探讨

Discussion on the Construction Technology of Production Pumping Test for Foundation Pit by Inverted Construction Method

盖挖逆作法施工的基坑在顶板施工并覆土完成后,需要进行生产性抽水试验,以地铁项目为例,采用降水井内预置的振弦式孔隙水压计的施工工艺,从而换算出坑内降水井水位变化情况,以保证生产性抽水试验的顺利进行。

For the basement excavated by the inverted construction method,after the top slab is completed and the soil is covered,a production water test is required.Using a subway project as an example,the construction process involves placing a piezoelectric porosity water pressure gauge in the well to calculate the water level change in the well,thereby ensuring the successful completion of the production water test.