The Key Technology for Underwater Bottom Sealing of Ultra-deep Shaft Based on SAM Method
A shaft project in Nanjing adopts the Suspended Segmental Shaft Automatic Mechanical method(SAM method).The shaft based on this process has the characteristics of deep excavation depth and underwater bottom sealing form.The diffusion radius of bottom sealing concrete and the amount of first sealing concrete are calculated.Starting from the bottom cleaning,bottom sealing platform installation,duct selection,underwater concrete pouring and other links,the bottom sealing process and key technologies are summarized for reference.
SAM methodultra-deep shaftunderwater bottom sealingprefabricated shaft
NETL
NSTL
万方数据
