Title:
CONSTRUCTION METHOD FOR ACHIEVING LARGE-DIAMETER DEEP MIXING ON BASIS OF RESISTANCE REDUCTION
Document Type and Number:
WIPO Patent Application WO/2021/017798
Kind Code:
A1
Abstract:
Provided is a construction method for achieving large-diameter deep mixing on the basis of resistance reduction, belonging to the technical field of pile foundation construction, organically combining a resistance reduction material with a mixing drilling rig, and using the following steps to implement a large-diameter deep construction method: construction site preparation, and configuration and refitting of construction equipment; configuration of resistance reduction material and curing material; mixing and drill lowering construction; mixing and drill raising construction; secondary mixing and drill lowering construction; secondary mixing and drill raising construction; when the mixing drill bit is raised to a design height, completing the mixing operation, ending the construction. The present invention improves the structure of a traditional drill bit to achieve the function of resistance reduction; reducing the resistance of the stirring blade by means of spraying an ionic surfactant solution; carbon nanotubes are doped in a cement slurry to form a new type of curing material, conducive to the full mixing of slurry and soil; different construction parameters are used under different geological conditions, and construction is targeted, improving construction efficiency and ensuring the quality of the mixing pile.
Inventors:
SONG WEIJIE (CN)
LI JIANPING (CN)
ZHU QINGKAI (CN)
LIU GUANGLEI (CN)
WU SIYU (CN)
HOU ENPIN (CN)
WANG WEITAO (CN)
LI JIANPING (CN)
ZHU QINGKAI (CN)
LIU GUANGLEI (CN)
WU SIYU (CN)
HOU ENPIN (CN)
WANG WEITAO (CN)
Application Number:
PCT/CN2020/101637
Publication Date:
February 04, 2021
Filing Date:
July 13, 2020
Export Citation:
Assignee:
ZHONGYAN TECH CO LTD (CN)
International Classes:
E02D5/46; E21B10/60; E21B12/00
Domestic Patent References:
| WO2016208543A1 | 2016-12-29 |
Foreign References:
| CN110344403A | 2019-10-18 | |||
| CN110004923A | 2019-07-12 | |||
| CN107032673A | 2017-08-11 | |||
| CN103328407A | 2013-09-25 | |||
| CN109972612A | 2019-07-05 | |||
| CN103343535A | 2013-10-09 | |||
| JP2000054367A | 2000-02-22 |
Attorney, Agent or Firm:
QINGDAO ZHIDILINGCHUANG PATENT AGENCY CO., LTD (CN)
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