sunken pipe meaning in English

地下管道

Analysis and treatment of quality accident of ramming - expanded sunk pipe pile
沉管夯扩桩工程质量事故分析与处理
Compared with the mud on wall form hole technology , clash stake technology or vibration sink pipe technology used in complex foundation stake forming , it has advantages of no vibration , no pollution , and no noise . in addition , since the concrete pressed into the drill stem sent vibration free concrete to the pump , so it is eas y to ensure the quality of the stake body . compared with the mud on wall and dry work form hole technology , the side obstruction and end obstruction of screw drill press concrete stake have all been accordingly improved , the weight bearing is better , and the transmutation of the complex foundation is less
其中，螺旋钻孔压灌混凝土成桩技术自研制以来，已在多项复合地基工程中进行了应用，较好地解决了软弱地层成孔困难的问题，适应地质条件范围广，成桩速度较快，工期短、工效高；与复合地基成桩时的泥浆护壁成孔工艺、振冲桩工艺或振动沉管工艺施工比较，具有无振动、无污染、无噪音的优点；另外，压入钻杆内的混凝土为泵送免振混凝土，因此桩体质量易于保证；与泥浆护壁和干作业成孔工艺相比，螺旋钻孔压灌混凝土成桩的侧阻和端阻都有相应的提高，桩的承载性能较好，复合地基的变形较小。