摘要
在风化辉长岩基坑设置止水帷幕降水时,其止水效果是基坑工程成败的关键。该文结合某地铁基坑止水帷幕施工实例,通过现场调查及试喷效果分析,从旋喷桩排列形式、设备选型、施工技术参数、实际操作等方面分析风化辉长岩基坑止水帷幕失效原因,研究提高该类地层基坑止水帷幕止水效果的施工工艺,得到较为理想的结果。
When the waterproof curtain is set in the foundation pit of weathered gabbro,its water stopping effect is the key to the success or failure of the foundation pit construction.Combined with a subway foundation pit water proof curtain construction,through the field investigation and test jet effect analysis,this paper analyzes the failure reasons of water proof curtain of weathered gabbro foundation pit from the aspects of rotary jet grouting pile arrangement form,equipment selection,construction technical parameters,practical operation,and so on,studies the construction technology to improve the water stopping effect of foundation pit water proof curtain of this kind of ground layer,and obtains ideal results.
作者
孔宪海
Kong Xianhai(Three-dimensional Geotechnical Engineering Co.,Ltd.,Yantai)
出处
《勘察科学技术》
2020年第5期28-32,共5页
Site Investigation Science and Technology
关键词
风化辉长岩
止水帷幕
三管法高压旋喷
双高压旋喷法
weathered gabbro
waterproof curtain
three-pipe high pressure rotary jet
rodin jet pile method(RJP)
