公开(公告)号：US12116315B2

公开(公告)日：2024-10-15

申请号：US17299031

申请日：2020-11-03

Applicant: SHANDONG UNIVERSITY

Inventor： Shucai Li ,  Rentai Liu ,  Chenyang Ma ,  Mengjun Chen ,  Jiwen Bai ,  Zhenjun Wang ,  Huasheng Zhang ,  Shaolong Duan ,  Jiawei Tian ,  Mi Zhang ,  Chunyu Zhang ,  Xiuhao Li ,  Xiangchao Sheng

IPC: C08J3/12 ,  C04B26/06 ,  C08F220/06 ,  C08J3/16 ,  C08J3/24 ,  C04B103/00 ,  C04B111/00 ,  C04B111/70

CPC classification number: C04B26/06 ,  C08F220/06 ,  C08J3/126 ,  C08J3/16 ,  C08J3/244 ,  C08J3/245 ,  C04B2103/0049 ,  C04B2111/00663 ,  C04B2111/00698 ,  C04B2111/0075 ,  C04B2111/70 ,  C08F2800/20 ,  C08F2810/20 ,  C08J2333/02

Abstract: A karst channel type water inrush efficient-blocking ultra-high expansion grouting material, preparation, methods and application thereof, the grouting material includes macromolecule polymer particles A and a cross-linking solidifying fluid B, wherein the macromolecule polymer particles A are an inlaid type core-shell structure, primary macromolecule water-absorbent resin serves as an inner core, part of a gelling catalyzer is attached to an the inner core surface forming a shell, and the gelling catalyzer permeates the inner core forming an inlaid structure; before use, the macromolecule polymer particle A and the cross-linking solidifying fluid B are stirred; and then obtained mixed liquid is used as the grouting material to be injected into a fracture of a rock mass fracture zone. By means of the grouting material, high-pressure large-flow karst water inrush can be efficiently treated, the blocking efficiency of water inrush is improved, and major underground engineering construction of China is further facilitated.

公开(公告)号：US11905352B2

公开(公告)日：2024-02-20

申请号：US17275998

申请日：2019-10-18

Applicant: SHANDONG UNIVERSITY

Inventor： Shucai Li ,  Rentai Liu ,  Chenyang Ma ,  Mengjun Chen ,  Yankai Liu ,  Zhenjun Wang ,  Chunyu Zhang ,  Xiuhao Li ,  Shaolong Duan

IPC: C08F220/06 ,  C08K3/36 ,  E21D11/38

CPC classification number: C08F220/06 ,  C08K3/36 ,  E21D11/38

Abstract: A preparation method of an expansive polymer grouting material for treating high-pressure large-flow-rate karst water inrush includes: 1) adding a crosslinking agent to acrylic acid; then adding a polymer water-absorbent resin comonomer and performing a polymerization reaction to obtain a precursor; 2) adding an initiator to the precursor obtained in step 1), heating the mixture, performing a reaction to obtain a hydrogel, and grinding the hydrogel to obtain a primary polymer water-absorbent resin; 3) spraying a surface crosslinking agent onto a surface of the primary polymer water-absorbent resin obtained in step 2), and drying the product; and 4) preparing a suspension from an inorganic water conducting agent, spraying the suspension onto the product obtained in step 3), and performing drying to obtain the expansive polymer grouting material.