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. 09, 2026
Filed:
Oct. 30, 2023
Huaneng Lancang River Hydropower Inc, Kunming, CN;
Powerchina Kunming Engineering Corporation Limited, Kunming, CN;
Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, CN;
Hua Zhou, Kunming, CN;
Yelin Feng, Kunming, CN;
Fugang Zhao, Kunming, CN;
Pengzhi Pan, Kunming, CN;
Hailong Huang, Kunming, CN;
Zhaofeng Wang, Kunming, CN;
Xufeng Liu, Kunming, CN;
Yangyi Zhou, Kunming, CN;
Longhai XI, Kunming, CN;
Xuanjiao Zhen, Kunming, CN;
Huaneng Lancang River Hydropower Inc, Kunming, CN;
POWERCHINA Kunming Engineering Corporation Limited, Kunming, CN;
Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, CN;
Abstract
An active control method and device for large deformation of a deep thin-bedded surrounding rock, the active control method includes: drill holes in the surrounding rock of a tunnel against a tunnel face, add the active control device containing a sleeve, a high-strength prestressed anchor bolt, a resin anchoring agent and a grouting device into drill holes, apply a preload to the anchor bolt when the resin anchoring agent has a certain strength, and carry out lag grouting in the surrounding rock through the grouting device after stress adjustment, and the high-strength prestressed anchor bolt and the grouting device are inserted in the sleeve with holes on the side. The active control device or method of the invention can effectively reduce the fracture depth and degree of a thin-bedded soft rock in deep engineering, and effectively inhibit the occurrence of large deformation disasters.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile