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:
Jan. 07, 2025
Filed:
Dec. 28, 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, Suzhou, CN;
Fei Sha, Shandong, CN;
Jian Chen, Shandong, CN;
Zhe Zhang, Suzhou, CN;
Peng Chen, Suzhou, CN;
Jianyong Zhang, Suzhou, CN;
Shutong Yang, Shandong, CN;
Mingshuai Xi, Shandong, CN;
Tao Liu, Shandong, CN;
Yixiang Li, Jiangsu, CN;
Gongbiao Yang, Shandong, CN;
Qingsheng Meng, Shandong, CN;
Qiguang Duan, Suzhou, CN;
Yuhong Diao, Shandong, CN;
Jicheng Shu, Suzhou, CN;
Rui Fan, Shandong, CN;
Lanying Zhang, Shandong, CN;
Meng Bu, Shandong, CN;
Naiyin Yang, Shandong, CN;
Hao Kong, 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
A synchronous single-liquid grouting slurry, its technology and application for large diameter shield engineering under water-rich, high-pressure and weak soil strata conditions, comprising raw materials: 1050-1200 parts of gold tailing, 420-480 parts of silicate cement clinker, 220-240 parts of fly ash, 45-120 parts of waste clay brick, 65-95 parts of slag, 25-45 parts of limestone tailing, 70-80 parts of steel slag, 30-45 parts of silica fume, 15-22 parts of desulfurized gypsum, and 9-15 parts of quick-setting and early-strength composite additive. The invention controls the d, dand dof the material particles as 35-40, 42-48 and 50-55 μm, respectively. Gold tailing with the particle size of 120-600 μm being used as the fine aggregate, their volume fractions are 40-60%. The slurry production technique, comprising crushing-sieving-superfine ball milling-homogenization-particle size classification-variable speed mixing being developed. The shield tail eight-point grouting technique is being developed for filling.