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:
Dec. 02, 2025
Filed:
Dec. 06, 2022
Ccteg Coal Mining Research Institute, Beijing, CN;
Tiandi Science & Technology Co.,ltd, Beijing, CN;
Hongpu Kang, Beijing, CN;
Pengfei Jiang, Beijing, CN;
Ziyue Wang, Beijing, CN;
Yongzheng Wu, Beijing, CN;
Yaozhong Wei, Beijing, CN;
Chang Liu, Beijing, CN;
Jichang Guo, Beijing, CN;
Chao Luo, Beijing, CN;
Xiaoming Cao, Beijing, CN;
Zhiliang Chen, Beijing, CN;
Jianwei Yang, Beijing, CN;
CCTEG COAL MINING RESEARCH INSTITUTE, Beijing, CN;
TIANDI SCIENCE & TECHNOLOGY CO., LTD, Beijing, CN;
Abstract
Disclosed are a method and system for temporary coating supporting and permanent bolt supporting. Tunnel excavation construction operation is composed of a plurality of operation cycle units, and each of the operation cycle units includes: excavating by at least one row pitch to form a new tunnel; spraying a coating material onto a surface of the new tunnel to form a sealing coat on a surface of surrounding rock, wherein the sealing coat has an adhesive property and a sealing property both meeting preset conditions, and has a tensile strength and a toughness needed for supporting; and inserting bolts into the new tunnel to perform permanent supporting.