The anchor bolting has been widely applied in supporting structure of deep foundation pit in high building, and it maintains safety of protection structure with soil layer fixed pressure.
锚杆已广泛应用于高层建筑基坑的支护结构中，它利用地层的锚固力维持结构物的稳定。
Protection layer excavation in foundation of structure is always one of difficult problems perplexing construction in water conservancy project.
建筑物基础保护层开挖一直是困扰水利水电施工的难题之一。
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