大直径超深圆竖井内衬逆作法施工技术研究

Research on construction methods of lining reverse construction methods of large-diameter ultra-deep-round shaft

圆形竖井空间结构受力均匀,是一种较为理想的地下结构形式。近年来随着现代化建设的发展,地下工程逐步有着更深更大的趋势,在一些工程领域出现了一些大直径的超大深度的地下竖井,其可用于城市地下交通系统、城市管网系统、地下停车库、大型地下仓储等领域都有较为广泛的应用。结合上海苏州河段深层排水调蓄管道系统工程的实例,对大直径超深圆竖井内衬逆作法施工技术做了一些研究,提出了一些用于大直径竖井内衬逆作的新施工技术,实践证明该技术实施效果良好,对深隧圆形竖井基坑结构逆作施工起到了巨大的助力作用。

The paper indicates the round shaft with even stress in spatial structure is the ideal underground structure,clarifies the deeper and farther development of the underground projects along with the modernization in recent years,points out some large-diameter deep underground shafts are under way in the engineering field,which will have extensive application in urban underground traffic system,pipe network system,underground parking lots,and large-scale underground storehouses,researches construction methods of lining reverse construction methods of large-diameter ultra-deep-round shaft by combining with the deep-layer drainage and regulation pipeline project at Suzhou River Section in Shanghai,points out some new construction methods which can be adopted in large-diameter shaft’s lining reverse project,and proves by practice that the technique has better implementing effect and provides great assistance for the reverse construction of the deep and round shaft foundation pit structures.