摘要
锚索施工在海陆交互相沉积软土中施工,常出现塌孔、洗孔涌砂、在淤泥中缩径等成孔问题。同时,砂层中锚索注浆也存在浆液流失、锚固段浆液不饱满等质量问题。为此,结合工程案例,通过采用高压旋喷扩孔锚索一次成型技术,研制改进锚索机钻具、控制施工工艺(成孔钻进、喷浆压力、喷气压力、水泥浆液配置等),解决锚索施工在海陆交互相沉积软土中遇到的施工问题,提高锚索施工质量。
In the construction of anchor cable in the soft soil deposited by sea and land,there are many problems such as hole collapse,sand gushing by hole washing,and diameter reduction in silt.At the same time,there are also some quality problems such as loss of grout and insufficient grout in anchor cable grouting in sand layer.In this paper,combining with engineering cases,high pressure jet grouting reaming anchor cable through the adoption of a molding technology,designed anchor cable machine tool,control construction technology(hole drilling,spray pressure,jet pressure,cement grout configuration,etc.),to solve each other in the sea and river sedimentary soft soil anchor cable construction problems encountered in construction,improve the quality of anchor cable construction.
作者
卢焱保
LU Yanbao(Geotechnical and Environmental Enterprise Engineering Technology Research Center of Fujian province,Longyan 364000;Fujian Yongqiang Geotechnical Co.,Ltd,Longyan 364000)
出处
《福建建筑》
2023年第1期95-99,共5页
Fujian Architecture & Construction
关键词
海陆交互相
沉积软土
高压旋喷
扩孔锚索
桩锚支护
Land and sea interaction
Sedimentary soft soil
High pressure jet grouting
Reaming anchor cable
Pile-anchor support
