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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.:

US 12742388 B1

PDFFull Text
Date of Patent:
Sep. 22, 2026

Filed:

Sep. 27, 2024

Method and device for preventing rib spalling in high-stress surrounding rock by hydraulic slotting

Applicants:

China University of Mining and Technology, Xuzhou City, CN;

Yunlong Lake Laboratory of Deep Earth Science and Engineering, Jiangsu Province, CN;

Inventors:

Bo Meng, Xuzhou City, CN;

Bangguo Jia, Jiangsu Province, CN;

Hongwen Jing, Xuzhou City, CN;

Jingkui Long, Xuzhou City, CN;

Xiaozhao Li, Xuzhou City, CN;

Dajiang Liu, Xuzhou City, CN;

Yanjun Qi, Xuzhou City, CN;

Qian Yin, Xuzhou City, CN;

Jinghua Qi, Xuzhou City, CN;

Yingchao Wang, Xuzhou City, CN;

Tao Wang, Xuzhou City, CN;

Runda Yang, Xuzhou City, CN;

Liang Wen, Xuzhou City, CN;

Assignees:

CHINA UNIVERSITY OF MINING AND TECHNOLOGY, Xuzhou City, CN;

YUNLONG LAKE LABORATORY OF DEEP EARTH SCIENCE AND ENGINEERING, Jiangsu Province, CN;

Attorney:

Pillsbury Winthrop Shaw Pittman LLP

Primary Examiner:

Amber R Anderson

Int. Cl.
CPC ...
E21C 37/12 (2006.01);
U.S. Cl.
CPC ...
E21C 37/12 (2013.01);
Abstract

A method and device for preventing rib spalling in a high-stress surrounding rock by hydraulic slotting are provided. The construction steps include: obtaining mechanical parameters of a surrounding rock and determine a width of each of pressure relief grooves; opening four drilling holes along an excavation direction of a roadway, and the four drilling holes are arranged at two sides of the roadway in pairs, and two of the drilling holes, located at the same side, are arranged at a bottom and a top of the roadway respectively; hydraulically slotting the drilling holes towards the roadway in a horizontal direction to form the pressure relief grooves; and excavating the surrounding rock to form the roadway, and the roadway is in communication with the pressure relief grooves.

Find Patent Forward Citations

Meng, Bo. (2026). Method and device for preventing rib spalling in high-stress surrounding rock by hydraulic slotting (U.S. Patent No. 12742388). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12742388

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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