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:
Jul. 02, 2024
Filed:
Jul. 21, 2023
China Railway 16th Bureau Group Co., Ltd, Beijing, CN;
China Railway Eryuan Engineering Group Co., Ltd, Chengdu, CN;
Beijing Jiaotong University, Beijing, CN;
China Railway 16th Bureau Group 1st Engineering Co., Ltd, Beijing, CN;
China Railway 16th Bureau Group 4th Engineering Co., Ltd, Beijing, CN;
Wuxian Wang, Beijing, CN;
Su Yan, Beijing, CN;
Liang Kuang, Chengdu, CN;
Jinwen Yang, Beijing, CN;
Mingli Huang, Beijing, CN;
Yitao Feng, Beijing, CN;
Wanqiang Zhao, Chengdu, CN;
Liujie Jin, Beijing, CN;
Weiming Zhang, Beijing, CN;
Qian Dong, Beijing, CN;
Liang Du, Beijing, CN;
China Railway 16th Bureau Group Co., Lid, Beijing, CN;
China Railway Eryuan Engineering Group Co, Eid, Chengdu, CN;
Beijing Jiaotong University, Beijing, CN;
China Railway 16th Bureau Group 1st Engineering Co., Ltd, Beijing, CN;
China Railway 16th Bureau Group 4th Engineering Co., Ltd, Beijing, CN;
Abstract
A coal uncovering construction method for blasting large cross-section gas tunnels includes: analyzing stress distribution characteristics in front of a tunnel boring working face, and then determining a thickness calculation model of a reserved rock wall based on a limit equilibrium theory; establishing a tunnel model, simulating a construction condition and analyzing a construction result, and determining a thickness of the reserved rock wall; and fixing a detonator through a fixed sand ring, fitting the detonator with a construction hole by adjusting an adjustable protective plate, then embedding the detonator into a blast hole, and blasting the detonator for tunnel construction. Furthermore, an extension ring is fixed between the fixed sand ring and the adjustable protective plate.