谈河谷人工挖孔桩坍塌和预防处理

On the prevention and treatment measurements of manually excavated pile collapse

我国目前新建设的公路、铁路项目,大部分位于交通欠发达,经济仍较贫乏的高山丘陵地带,桥隧相连结构物多,施工条件比较困难,理想中的大型机械设备不能到场,特别是两山之间河谷地段的桥梁孔桩施工,只能采用人工作业。如何处理河谷人工挖孔遭遇坍塌问题,笔者根据现场经历,浅谈一些处理方法。

The current construction of highway and railway projects,mostly in the traffic underdeveloped,the economy is still relatively poor Mountain hilly area,bridge and tunnel connected structure,construction conditions more difficult,large-scale machinery and equipment can not be ideal in the scene,especially between two mountains valley section of the bridge hole pile construction,can only use manual work. How to handle the valley suffered collapse problem of artificial digging hole,according to the experience on site,some treatment methods.