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:
Jun. 27, 2023
Filed:
Sep. 21, 2021
China Railway 18 Bureau Group Co. Ltd., Tianjin, CN;
Liaoning Technical University, Fuxin, CN;
Xin Zhang, Tianjin, CN;
Zhitao Zhao, Tianjin, CN;
Jufa Xi, Tianjin, CN;
Xiangping Zhang, Tianjin, CN;
Baoxin Jia, Fuxin, CN;
Jiashun Liu, Fuxin, CN;
CHINA RAILWAY 18 BUREAU GROUP CO. LTD., Tianjin, CN;
Abstract
The present invention relates to a reinforcement system at a railway tunnel section passing through a karst cave with a large dip angle and a construction method. The reinforcement system of the present invention can solve the problems of downward mud filling, watertightness, etc. of a top through structures of an umbrella arch, a concrete layer, a flexible buffer layer and a protective layer at the top, at a karst cave, of a tunnel, solve the problem of upward mud inrush at a bottom through structures of an anchor cable, a ring beam and a foundation pad at the bottom of the tunnel, guarantee stability of an arch bridge by erecting 'a triple arch bridge' in a middle and adding a vertical bearing wall under the arch bridge, and make a railway safely cross the mud-inrush karst cave by safely laying a ballastless track on the bridge.