GROUTING CONSOLIDATION METHOD FOR FULL CASING BOREHOLE GUIDE PREFABRICATED PILE AND PREFABRICATED PILE THEREFOR

WIPO Patent Application WO/2020/062940

A1

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.

JPS59206518	STRENGTHENING METHOD OF ON-SITE CONCRETE PILE
JPS5824032	LEAKAGE PREVENTION WORK FOR PACKED CEMENT MORTAR

GAO YONGGUANG (CN)
GAO YUNFEI (CN)

PCT/CN2019/091230

April 02, 2020

June 14, 2019

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GAO YONGGUANG (CN)
GAO YUNFEI (CN)

E02D5/62

WO2011105703A2

2011-09-01

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

See also references of EP 3839149A4

SUNSHINE INTELLECTUAL PROPERTY INTERNATIONAL CO., LTD. (CN)

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