US 11,746,496 B2
Precise lifting method and lifting and reinforcing structure for plant equipment foundation
Xuedong Cui, Beijing (CN); Jiguang Wu, Beijing (CN); and Tengyue Cui, Beijing (CN)
Assigned to BEIJING HENGXIANG HONGYE FOUNDATION REINFORCEMENT TECHNOLOGY CO., LTD., Beijing (CN)
Filed by BEIJING HENGXIANG HONGYE FOUNDATION REINFORCEMENT TECHNOLOGY CO., LTD., Beijing (CN)
Filed on Jan. 24, 2022, as Appl. No. 17/582,003.
Application 17/582,003 is a continuation of application No. PCT/CN2020/107608, filed on Aug. 7, 2020.
Claims priority of application No. 201910736651.X (CN), filed on Aug. 9, 2019.
Prior Publication US 2022/0145576 A1, May 12, 2022
Int. Cl. E02D 35/00 (2006.01); E02D 3/12 (2006.01); E02D 27/44 (2006.01)
CPC E02D 35/005 (2013.01) [E02D 3/12 (2013.01); E02D 27/44 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A precise lifting method for a plant equipment foundation, comprising the following steps:
Step S1, forming a curtain wall: drilling downwards in a vertical direction at two to-be-lifted sides of the plant equipment to form a plurality of curtain holes and grouting the curtain holes, wherein grouting areas overlap each other to form two parallel curtain walls for separation from non-lifting areas, a depth of the curtain walls is at least equivalent to a thickness of backfilling soil layer;
Step S2, forming a reinforcing body: drilling grouting holes inclining downwards along an outer contour of the plant equipment in a length direction of the curtain wall, wherein the grouting holes are symmetrically provided at both sides of the plant equipment; grouting the grouting holes to form the reinforcing body attached to a lower surface of a baseplate of the plant equipment foundation among a bottom of the baseplate and two curtain walls, so as to form a substantially inverted U-shaped structure together with two curtain walls, a plurality of rebars are provided between every two grouting holes, and the rebars are inserted obliquely into the reinforcing body and form a structure similar to reinforced concrete together with the reinforcing body, wherein the rebars at both sides of the plant equipment are inclined toward each other; and
Step S3, lifting: drilling lifting holes obliquely downwards to below a bottom of the reinforcing body and between two curtain wall, wherein the lifting holes on both sides of the plant equipment are inclined toward each other; and conducting pressure grouting to the bottom of the lifting holes and then a backward grouting upwards layer by layer, whereby a soil body is pressed to generate an upward lifting force as a slurry in the curtain walls is continuously increased and solidified, so as to lift the plant equipment to a set lifting height equably.