临江深厚砂卵石地层止水帷幕改良试验研究  

Experimental Study on Improvement of Water Stop Curtain in Thick Sandy Cobble Stratum near the River

作　　者：杨峰 YANG Feng(China Railway Tunnel Bureau Group Co.Ltd.,Municipal Engineering Company,Hangzhou 310030,China)

机构地区：[1]中铁隧道局集团有限公司市政工程公司,杭州310030

出　　处：《科技和产业》2023年第22期268-274,共7页Science Technology and Industry

基　　金：中铁隧道局集团科技创新计划科研课题(隧研合2022-22)。

摘　　要：为了使止水帷幕发挥更好的效果,首先采用室内试验确定合理水泥掺入量,其次对传统高压旋喷桩设备进行改良,并将室内试验的研究成果应用到现场试验,形成一种强力搅拌旋喷桩。研究结果表明,为了保证止水帷幕的防水质量以及经济性,可在实际工程中采用11%的水泥掺入量。此外,采用全新设备形成的强力搅拌旋喷桩,提高止水帷幕成桩质量合格率,节约了施工成本,加快了施工进度,为今后类似工程的开展提供了借鉴。In order to make the water-stop curtain play a better effect,the indoor test was firstly used to determine the reasonable cement mixing amount,and then the traditional high-pressure jet grouting pile equipment was improved,and the research results of the indoor test to the field test were applied to form a the utility model relating to a powerful stirring rotary spraying pile.The research results are as follows.In order to ensure the waterproof quality and economy of the water-stop curtain,11%cement can be added in the actual project.In addition,the powerful agitation and rotary grouting piles formed by the use of new equipment have improved the qualified rate of water-stop curtain pile quality,saved construction costs,accelerated construction progress,and provided a reference for the development of similar projects in the future.

关 键 词：基坑工程 砂卵石 止水帷幕 水泥掺入量 强力搅拌旋喷桩 

分 类 号：TU473[建筑科学—结构工程]