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:
Apr. 16, 2024
Filed:
May. 24, 2022
Taiyuan University of Technology, Taiyuan, CN;
Guorui Feng, Taiyuan, CN;
Yijiang Fan, Taiyuan, CN;
Pengfei Wang, Taiyuan, CN;
Chenliang Hao, Taiyuan, CN;
Xiaoze Wen, Taiyuan, CN;
Jun Guo, Taiyuan, CN;
Jinwen Bai, Taiyuan, CN;
Tingye Qi, Taiyuan, CN;
Jianan Liu, Taiyuan, CN;
Linjun Zhu, Taiyuan, CN;
Changquan Wu, Taiyuan, CN;
Taiyuan University of Technology, Taiyuan, CN;
Abstract
A method for carrying out grouting between adjacent gateroads in internal-staggered split-level coal mining. A return air gateroad of a stoping face and an inlet air gateroad of a heading face are not on the same level. The return air gateroad of the stoping face is arranged along a roof of a coal seam. The inlet air gateroad of the heading face is arranged along a floor of the coal seam. There is a height difference between the return air gateroad and the inlet air gateroad in a vertical direction. During the construction process, the inlet air gateroad is excavated at a delay distance of 180-200 meters from the return air gateroad. The drilling and grouting are performed while excavating the roadway, where grouting holes are arranged in a single row. A device for implementing the method is also provided.