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Improving method for open caisson sinking construction in geology of sludge layer
The invention relates to an improving method for open caisson sinking construction in geology of a sludge layer. Sinking stability piles are changed from cement powder spraying piles into after-drilling injection grouting pillars. Construction of the after-drilling injection grouting pillars comprises the steps that (1) site leveling is conducted, surveying and lining are conducted to determine the positions of the after-drilling injection grouting pillars, and a drill is put in a position; (2) holes are formed by drilling an open caisson with the adoption of a single spiral drill; and (3) after the holes are formed, grouting is conducted to hole bottoms, after the hole bottoms are solidified, grouting is conducted while a drill bit is lifted, the after-drilling injection grouting pillars are formed until the drill bit is retreated from the formed holes. The after-drilling injection grouting pillars are stable in structure and good in uniformity. No large chiseling height difference is generated when opposite-chiseling is conducted. The open caisson sinking process is more stable.
Improving method for open caisson sinking construction in geology of sludge layer
The invention relates to an improving method for open caisson sinking construction in geology of a sludge layer. Sinking stability piles are changed from cement powder spraying piles into after-drilling injection grouting pillars. Construction of the after-drilling injection grouting pillars comprises the steps that (1) site leveling is conducted, surveying and lining are conducted to determine the positions of the after-drilling injection grouting pillars, and a drill is put in a position; (2) holes are formed by drilling an open caisson with the adoption of a single spiral drill; and (3) after the holes are formed, grouting is conducted to hole bottoms, after the hole bottoms are solidified, grouting is conducted while a drill bit is lifted, the after-drilling injection grouting pillars are formed until the drill bit is retreated from the formed holes. The after-drilling injection grouting pillars are stable in structure and good in uniformity. No large chiseling height difference is generated when opposite-chiseling is conducted. The open caisson sinking process is more stable.
Improving method for open caisson sinking construction in geology of sludge layer
HU JIANGPING (author) / DONG JUN (author) / LU FEI (author) / QIU BINLIANG (author) / YANG DUOJIAO (author) / PENG ZHANGXIONG (author)
2016-01-20
Patent
Electronic Resource
English
IPC:
E02D
FOUNDATIONS
,
Gründungen
Open caisson pressing sinking method construction method
| European Patent Office | 2020