高水位下粉土地基轻型井点降水技术研究  

Study on Light Well Point Dewatering Technology in Silty Soils under High Groundwater Level

作　　者：靳涛 李雪飞 刘大召 荣传彪 谢阳发 朱秋 JIN Tao;LI Xuefei;LIU Dazhao;RONG Chuanbiao;XIE Yangfa;ZHU Qiu(China Construction Fifth Engineering Bureau Henan Branch Zhengzhou,450000;School of Civil Engineering,Henan Polytechnic University,Jiaozuo 454000;Hunan Institute of Traffic Engineering,Hengyang 421000;China Construction First Engineering Bureau Group No.2 Construction Co.Ltd.,Beijing 102600)

机构地区：[1]中国建筑第五工程局有限公司,长沙410000 [2]河南理工大学土木工程学院,河南焦作454000 [3]湖南交通工程学院,湖南衡阳421000 [4]中国建筑第一工程局第二建筑有限公司,北京102600

出　　处：《土工基础》2024年第4期573-577,共5页Soil Engineering and Foundation

基　　金：中国建筑第五工程局有限公司河南分公司郑州分公司课题(2028482)。

摘　　要：高水位会带来一系列岩土工程的问题,特别是对于降水量大、地下水变化大且地质不良的地区,更会对地下建(构)带来更大挑战。结合高水位且地基为粉土的工程实例,首先对比不同降水技术的优缺点,选择科学有效的降水处理技术,然后阐述其施工工艺和注意事项,对降水效果进行了分析,最后跟进了后期的沉降监测,为以后同类型的建筑工程积累更多的技术应用经验。研究结果表明:根据实际情况进行合理安排,轻型井点降水在本项目中降水效果良好,可以满足后续施工;对后期的沉降进行了监测,后期监测均满足规范要求。High groundwater level will bring a series of geotechnical engineering hazards,especially for areas with large dewatering requirements,large groundwater changes and poor geology,and it will bring greater challenges to the underground construction.Combined with the engineering examples of the high groundwater level and the silty soil,at first,the advantages and disadvantages of different dewatering methods were compared,scientific and effective dewatering treatment technologies were selected,and then the construction process and precautions were evaluated,the dewater effect was analyzed,and finally the later settlement monitoring was followed up,so as to accumulate more technical application experience for the same type of construction projects in the future.The results show that,according to the actual site conditions,the dewater of the light well point is very effective in this project,and it can meet the subsequent construction.The post settlement was monitored,and the construction monitoring satisfied the requirements of the specification.

关 键 词：高水位 粉土地基 轻型井点降水 降水效果 沉降监测 

分 类 号：TU463[建筑科学—结构工程]