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:
Mar. 10, 2026
Filed:
Aug. 03, 2023
Taiyuan University of Technology, Taiyuan City, CN;
Guorui Feng, Taiyuan City, CN;
Jian Li, Taiyuan City, CN;
Jinwen Bai, Taiyuan City, CN;
Jun Guo, Taiyuan City, CN;
Junbiao MA, Taiyuan City, CN;
Xudong Shi, Taiyuan City, CN;
TAIYUAN UNIVERSITY OF TECHNOLOGY, Taiyuan City, CN;
Abstract
Disclosed is a method for remining a residual coal pillar in a residual mining area by collaboration of pillar-side backfilling and in-situ gasification. The method includes the following steps of: ascertaining geological and hydrological conditions, a geometric shape and a reserve of a residual coal pillar; carrying out side supporting on the residual coal pillar in a goaf by using a pillar-side backfilling method; and carrying out the underground gasification mining on the residual coal pillar by means of an underground coal gasification process.