三一旋挖钻机工法讲堂(九) 淤泥层旋挖工法探讨

Discussion Construction Method of Hydraulic Diaphragm Wall Grabs

淤泥地层一直以来都是旋挖钻机施工的一个难点。其原因在于淤泥地层的工程性质特别差，其流塑状态导致旋挖钻机在该地层施工时缩颈、吸钻以及塌孔等不良工况频频发生。

Since diaphragm wall has been introduced into China,it has been widely used in river embankments,reservoir seepage, urban high-rise building and underground tunnel and many other projects.All of these applications are attribute to its well-retaining, sealing,pressure function after decades of development.The construction method of diaphragm wall is one of the best options in retaining and protecting for deep foundation excavation. This article will discuss and analyze the key technologies of construction method such as program selection,fitting form, construction techniques and mud elaborate preparation of hydraulic diaphragm wall grabs through the Liuhua Lake project in Guangzhou.The article also discusses the difficulties of technical issues in construction and provides the solutions.