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:
Aug. 30, 2022
Filed:
Jun. 24, 2021
China Coal Research Institute, Beijing, CN;
Qingjie Qi, Beijing, CN;
Anhu Wang, Beijing, CN;
Wengang Liu, Beijing, CN;
Haiyan Wang, Beijing, CN;
Yingjie Liu, Beijing, CN;
Youxin Zhao, Beijing, CN;
Shuai Huang, Beijing, CN;
CHINA COAL RESEARCH INSTITUTE, Beijing, CN;
Abstract
An anti-seismic support method for a mine shaft includes: providing a circular support groove in a liquefaction-prone layer of the mine shaft; providing horizontal support holes in a groove wall, and fixing an outer support spring steel cylinder against the groove wall; drilling vertical support holes at a groove bottom, anchoring a vertical anchor rod group into the vertical support holes, and injecting an expansion anchoring slurry into the vertical anchor rod group; making a lower positioning support ring abut against an upper end of the vertical anchor rod group and an inner wall of the outer support spring steel cylinder; fixing an anti-seismic connecting rod group between lower and upper positioning support rings; making an outer wall of an inner support spring steel cylinder abut against the upper and lower positioning support rings; and providing an upper support cover seat atop the outer and inner support spring steel cylinders.