公开(公告)号：US11085244B2

公开(公告)日：2021-08-10

申请号：US15757681

申请日：2016-07-11

Applicant: SHANDONG UNIVERSITY

Inventor： Shucai Li ,  Qingsong Zhang ,  Guangming Pan ,  Rentai Liu ,  Xiao Zhang ,  Lei Yang ,  Kai Wang ,  Zhaofeng Li ,  Haitong Sui ,  Teng Yang ,  Chunguo Liu

IPC: E21B10/60 ,  E21B33/13 ,  E02D3/12 ,  E21B10/00 ,  E21B10/42

Abstract: An anti-collapse grouting consolidation system including: a grouting pump; an outer flat drill rod; a drill rig that clamps the outer flat drill rod; a sealing device, sheathed on the outer flat drill rod at the orifice of a drill hole, ensuring the outer flat drill rod is sealed with the orifice of the drill hole; and a jet grouting drill bit with bi-directional rib wings. The grouting pump jets slurry into the drill hole in a static osmotic manner through the jet grouting drill bit. A method of using an anti-collapse grouting consolidation system includes, among other things, injecting quick-setting slurry; sealing an orifice hole of the drill hole by an orifice sealing device; and keeping an anti-collapse jet grouting drill bit with bi-directional rib wings repeatedly moving up and down and rotating at a repair segment to repair the repair segment.