【摘要】 珠江三角洲水资源配置工程A2标3号盾构井外径为35.9m,开挖深度达73.98m,采用地下连续墙和钢筋混凝土内衬墙联合支护。对地下连续墙施工抓铣组合工法、套铣接头工艺,液压破碎锤破岩技术以及内衬墙采用逆-顺结合作法等关键技术探究,经工程实践,形成了一套较完善的大深井施工技术,可供类似工程施工借鉴。更多还原

【Abstract】 The outer diameter of No.3 shield well in A2 bid of Pearl River Delta Water Resources Allocation Project is 35.9 m,and the excavation depth reaches 73.98 m.The underground continuous wall and reinforced concrete lining wall are used for joint support.The key technologies such as the combination method of grasping and milling in the construction of underground continuous wall,the process of sleeve milling joint,the rock breaking technology of hydraulic crushing hammer,and the inverse-shun combination method of lining wall are explored.Through engineering practice,a set of perfect construction technology of deep well has been formed,which can be used for reference in similar engineering construction.更多还原