Analysis on Key Technology of Cast-in-place Pile Reverse Circulation Rig Construction in Coastal Area
Based on the construction of cast-in-place pile in block B of Macao Resorts World general contracting engineering project,this paper introduces full-casing RCD bored pile construction technology.This technology uses a pipe shaking machine to press the steel protective tube into the soil layer in sections,and the mud,sand,and stones in the protective tube are loaded into the mud truck by the grab machine to be transported out of the site.The rock layer is drilled by a full hydraulic reverse circulation rig.The whole construction process of cast-in-place pile is safe and environmentally-friendly.It does not disturb the underground structure construction of block A,and effectively controls a large amount of mud to pollute Nanwan Lake water.The pile quality is good,and the problems of mud and sediment are effectively solved.
cast-in-place pilereverse circulation rigpile foundation bearing capacitymud pollution
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