高水位松散砂层锚杆施工成孔问题的解决

高层建筑深基坑支护中经常会用到锚杆支护，但在地下水位高的松散砂地层中施工时，常常存在涌水、涌砂等问题，导致成孔困难甚至引起周边地层下陷，严重危害基坑周围其它设施(如道路、建筑物等)的安全。以琼海市国税大厦基坑锚杆支护为例，介绍一种解决这一问题行之有效的施工方法。

Solution to Problems of High Water Level Loose Sand Layer Amour Rod Construction

Amour rod support is commonly used in high-building deep foundation pit support. But water and sand fathering often occur during construction within water level loose sands, resulting in difficulty of well completion and collapse of the surrounding strata, severely endangering the facilities around. The foundation pit amour rod support of Qionghai city Taxation Building is taken as an example to introduce an effective measure to solve this problem.