The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 22, 2026
Filed:
Dec. 27, 2022
Ocean University of China, Shandong, CN;
China Railway 14th Bureau Group Corporation Limited, Shandong, CN;
China Railway 14th Bureau Group Shield Engineering Coporation Limited, Jiangsu, CN;
Fei Sha, Shandong, CN;
Jian Chen, Shandong, CN;
Zhe Zhang, Jiangsu, CN;
Peng Chen, Jiangsu, CN;
Jianyong Zhang, Jiangsu, CN;
Tao Liu, Shandong, CN;
Hao Kong, Shandong, CN;
Shutong Yang, Shandong, CN;
Yixiang Li, Jiangsu, CN;
Gongbiao Yang, Shandong, CN;
Qingsheng Meng, Shandong, CN;
Qiguang Duan, Jiangsu, CN;
Yuhong Diao, Shandong, CN;
Jicheng Shu, Jiangsu, CN;
Minglong Zhang, Shandong, CN;
Shijiu Gu, Shandong, CN;
Hongying Niu, Shandong, CN;
Jingze Xu, Shandong, CN;
Yuhang Zuo, Shandong, CN;
Mingshuai XI, Shandong, CN;
Ocean University of China, Shandong, CN;
China Railway 14th Bureau Group Corporation Limited, Shandong, CN;
China Railway 14th Bureau Group Shield Engineering Coporation Limited, Jiangsu, CN;
Abstract
This invention discloses a double-liquid grouting slurry, its technology and application for super large diameter underwater shield engineering under high water pressure condition. The materials of slurry I are: 35-45 parts of cement clinker; 15-25 parts of slag; 24-35 parts of fly ash; 15-25 parts of steel slag; 5-15 parts of bentonite; 4-10 parts of limestone tailing; 0.3-2.0 parts of water reducing agent; 0.5-2.5 parts of cellulose. The materials of slurry II are: 0.2-3.8 parts of short-cut fiber; 96-99 parts of sodium silicate solution; 0.8-4.8 parts of viscous polymers. This invention generates the double-liquid slurry preparation process including crushing-screening-milling-group mixing-grouped mixing at different speeds, the volume ratio of slurry I and II is 1:1-10:1 during grouting, and the slurry is injected into the shield void through the six-point position technology at the shield tail and 3+2+1 segment splicing synchronous grouting techniques.