Title:
GROUTING CONSOLIDATION METHOD FOR FULL CASING BOREHOLE GUIDE PREFABRICATED PILE AND PREFABRICATED PILE THEREFOR
Document Type and Number:
WIPO Patent Application WO/2020/062940
Kind Code:
A1
Abstract:
A grouting consolidation method for a full casing borehole guide prefabricated pile, comprising the following steps: S1, driving a drilling rig carrying a casing (1) to perform borehole construction, the borehole construction being performed to a preset hole depth to form a borehole (2); S2. the casing (1) being housed in the borehole (2); S3. implanting a prefabricated pile (4) into the borehole (2) so that the prefabricated pile (4) reaches a hole bottom of the borehole (2); S4. injecting a slurry (3) into the borehole (2); S5. pulling out the casing (1) so that the prefabricated pile (4) and an inner cavity of the borehole (2) are fixed and cemented into an integrated structure. Also provided is a prefabricated pile, comprising a pile body and a grouting channel (5) provided on the pile body, wherein a liquid inlet end (11) of the grouting channel (5) extends out from an upper end surface of the pile body and a liquid outlet end (12) of the grouting channel (5) extends out from a lower end surface of the pile body and/or a side surface of the pile body.
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Inventors:
GAO YONGGUANG (CN)
GAO YUNFEI (CN)
GAO YUNFEI (CN)
Application Number:
PCT/CN2019/091230
Publication Date:
April 02, 2020
Filing Date:
June 14, 2019
Export Citation:
Assignee:
GAO YONGGUANG (CN)
GAO YUNFEI (CN)
GAO YUNFEI (CN)
International Classes:
E02D5/62
Domestic Patent References:
WO2011105703A2 | 2011-09-01 |
Foreign References:
CN109295972A | 2019-02-01 | |||
CN102691296B | 2015-02-11 | |||
CN105442594A | 2016-03-30 | |||
CN107794925A | 2018-03-13 | |||
CN102002945A | 2011-04-06 | |||
JP2000129669A | 2000-05-09 | |||
EP2527539A1 | 2012-11-28 | |||
EP2930275A1 | 2015-10-14 | |||
EP2650446A1 | 2013-10-16 |
Other References:
See also references of EP 3839149A4
Attorney, Agent or Firm:
SUNSHINE INTELLECTUAL PROPERTY INTERNATIONAL CO., LTD. (CN)
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