large-diameter borehole 中文意思是什麼
large-diameter borehole
解釋
大孔徑鉆孔-
The machine can adopt positive and negative circulation and other deep drilling technique, adapts to various stratum, is the first selected equipment for foundation construction of river ' s bridge and dock, and also adapts to large diameter borehole construction such as tall building, coal mine vertical well and sewage well, it exerts great action many changjiang river large scale bridges foundation construction
該機可採用正反循環等鉆進工藝施工,適合於各種地層,是江河橋梁、碼頭基礎施工的首選設備,也適用於高層建築、煤礦豎井和污水井等大口徑鉆孔施工,在多座長江大型橋梁基礎施工中發揮了巨大作用。
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