摘要
Abstract
In view of the fact that in foundation pits with high groundwater level,when drilling,anchor rods or soil nails are carried out in highly permeable formations such as sand layers,silt sand,gravel,etc.,it is often necessary to drill through the water-stop curtain,but after the water-stop curtain is drilled through,the drilling grouting effect is easy to be poor,a large amount of water seeps in the borehole and even cause local landslides.This paper proposes a grouting and plugging device and a water-stop curtain grouting system using it.The system comprises a cylindrical water-stop bag and a water injection pipeline arranged on one side of the water-stop bag.The water-stop bag is placed at the borehole with leakage,and the inside of the water-stop bag is filled through the water injection pipeline to realize the plugging of the borehole.It can effectively solve the leakage phenomenon at the borehole of the water-stop curtain,has a simple and compact structure,is convenient to operate,can operate quickly,save time and effort,and improve construction efficiency.关键词
止水帷幕/渗漏治理/注浆系统/基坑支护施工/施工效率Key words
water-stop curtain/leakage control/grouting system/foundation pit support construction/construction efficiency分类
建筑与水利
