莲花台水电站基坑大面积排水施工技术

Construction Technology for Large Area Drainage During Foundation Excavation in Lianhuatai Hydroelectric Power Station

对于修建水电站来说,基坑排水是一项重要的工作,如何快速有效地降低基坑水位,给下一步施工提交干地作业工作面,从而加快施工进度并缩短工期,是每个水电站工程应该研究的问题。对莲花台水电站基坑排水施工技术进行了研究,探索了水泵的技术改造和独创的多泵排水方案,有效地解决了基坑渗水、涌水难题,保证了施工正常进行。

For building hydropower station,it is important for drainage of foundation excavation.How to quickly and effectively decrease the water level to provide the next construction step a dried working platform,thus speeding up construction is the problem should be studied in every hydroelectric power station＇s construction.The authors studied the drainage construction technology of foundation excavation in Lianhuatai Hydroelectric Power Station,modified the pump,put forward special drainage method with many pumps,which effectively solve some problems of water penetration and water bursting of the foundation to ensure the hydropower station be constructed smoothly.