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Novel slurry recycling system for bored pile construction on underwater platform

A technology of circulation system and bored pile, which is applied in construction and other directions, can solve the problems that the mud cannot meet the environmental protection requirements, and achieve the effect of saving the space of the construction platform, reducing the construction cost, and reducing the time for cleaning holes

Pending Publication Date: 2018-07-20
CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP NO 4 ENG
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  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The purpose of this invention is to solve the problem that the existing mud circulation and drilling slag discharge process cannot meet the environmental protection requirements, and provide a new mud circulation system for the construction of bored piles on underwater platforms

Method used

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  • Novel slurry recycling system for bored pile construction on underwater platform
  • Novel slurry recycling system for bored pile construction on underwater platform
  • Novel slurry recycling system for bored pile construction on underwater platform

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specific Embodiment approach 1

[0015] Specific embodiment 1: This embodiment is a new type of mud circulation system for construction of bored piles on underwater platforms, which includes 4 sets of mud circulation systems, two branch trestles 5 and main trestle 6;

[0016] Each group of mud circulation system includes mud circulation pipeline 1, mud pool 2, sediment tank 3, 10 steel casings 4, gas lift reverse circulation drilling rig 7, mud separator 8, external hose 9 and mud pool platform 12, using The mud circulation pipeline 1 connects 10 steel casings 4 in series to form a closed loop, and uses the mud circulation pipeline 1 to connect one of the 10 steel casings 4 with the mud pool 2; For construction, the air-lift reverse circulation drilling rig 7 is installed above the bored piles for construction, and the drilling slag drilled by the air-lift reverse circulation drilling rig 7 on the bored piles is discharged to the sediment tank through the external hose 9 and the mud separator 8 in sequence In...

specific Embodiment approach 2

[0024] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the mud circulation pipeline 1 is a rectangular pipeline of 75cm×50cm. Others are the same as the first embodiment.

specific Embodiment approach 3

[0025] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the mud circulation pipeline 1 is welded into a 75cm×50cm rectangular pipeline with a 3mm thick steel plate, and the peripheral edges of the rectangular pipeline are welded with ∠75mm Angle steel for reinforcement. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a novel slurry recycling system for bored pile construction on an underwater platform, and relates to a slurry recycling system which is suitable for super-long and large-diameter bored pile construction on the underwater platform. The problem that existing mud cannot meet requirements of environmental protection in the process of recycling and drilling slag discharging issolved. The novel slurry recycling system for bored pile construction on the underwater platform comprises four groups of slurry recycling systems, two branch landing stages, a main landing stage, a long arm excavator and a slag conveying car, and each group of slurry recycling system comprises a slurry recycling pipeline, a slurry pool, a slag-sinking box, ten steel pile castings, a gas lift typereverse-circulation drill machine, a slurry separator, an externally-connected hose and a slurry pool platform. The novel slurry recycling system for bored pile construction on the underwater platform has the advantages that slurry circulation is realized, the construction platform space is saved, and requirements of civilized construction, standardized construction and environmental protection are met. The deposited drilling slag can effectively reduce the sand factor of recycling slurry. The novel slurry recycling system for bored pile construction on the underwater platform is mainly usedin bored pile construction on the underwater platform.

Description

technical field [0001] The invention relates to a mud circulation system suitable for construction of super-long and large-diameter bored piles on underwater platforms. Background technique [0002] During the construction of bored piles on underwater platforms, the traditional method is to set the mud pool on the construction platform, and form a loop through the mud pipeline and the steel casing in series for mud circulation. The common disadvantage is that it will occupy the space of the construction platform, which will affect the transportation of construction vehicles and concrete pouring work. When multiple drilling rigs work at the same time, there will often be station conflicts and the drilling rigs will be idle. After the drilling sequence is adjusted, the mud pipeline needs to be reconnected. The process of circulation and drilling slag discharge usually fails to meet high environmental protection requirements. Therefore, how to reasonably and effectively circul...

Claims

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Application Information

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IPC IPC(8): E21B21/01
CPCE21B21/01
Inventor 朱雪松徐兴源王宏毅林再志耿冰宁浩杰孙刚
Owner CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP NO 4 ENG
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