我们修建孙吴县兴北灌区的一座小型公路桥时，民工在基坑开挖过程中，恰好在基坑边缘西北角处（靠山体方向）挖穿泉眼，封堵不住，涌水不止。当时的抽水设备是以柴油机为动力，一台离心泵抽水。由于泉眼的出现，基坑排水由原来的1小时左右抽水一次，变为20分钟左右抽水一次，不 When we built a small highway bridge in the Xingbei Irrigation District in Sunwu County, migrant workers digging through springs at the northwest corner of the foundation pit (in the direction of the mountain) during the excavation of the foundation pit. The pumping equipment at the time was powered by a diesel engine and pumped by a centrifugal pump. Due to the appearance of spring eyes, the drainage of the foundation pit was pumped once from the original 1 hour, and it became a pumping time of about 20 minutes.