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挖孔桩遇流砂层孔内降水施工工艺核工业长沙工程勘察院何政我们在广深珠高速公路Ｂ２６段高架桥的基础工程施工中，对桩深小于２０ｍ（桩径１．５ｍ）的２１３根桩采用了人工开挖成孔。其中４０根挖孔桩由于遇流砂层而使施工受阻，在采取其它降水方法施工效果均不理想的情...
Drilling hole encountered in the sand layer hole precipitation construction process Nuclear Industry Changsha Engineering Investigation Institute He Zhengwen We have 213 pieces of pile depth less than 20m (segment diameter 1.5m) in the construction of the foundation of the B26 section of the Guangzhou-Shenzhen-Zhuhai expressway viaduct. Piles were manually excavated into holes. Among them, 40 digging piles have encountered obstacles due to the presence of sand layers, and the effect of other precipitation methods is not satisfactory.