The paper has introduced constructional properties, applicable sphere of pumping reverse circulation drilling, and its technical demands and the reasons of common hitchs and processing methods.
介绍了泵吸反循环钻进的施工特点、适用范围、施工中的技术要求与常见故障的原因及处理方法。
Compared to artificial digging-hole pile, the pumping reverse-circulation under-reamed bored pile has higher adaptability to geological condition, and its construction is safety and reliability.
泵吸反循环钻孔扩底灌注桩与人工挖孔灌注桩相比，地质条件的适应性强，施工安全可靠。
Compared to artificial digging-hole pile, the pumping reverse-circulation under-reamed bored pile has higher adaptability to geological condition, and its construction is safety and reliability.
泵吸反循环钻孔扩底灌注桩与人工挖孔灌注桩相比，地质条件的适应性强，施工安全可靠。
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