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:
Oct. 29, 2024
Filed:
Mar. 08, 2024
China University of Mining and Technology, Beijing, Beijing, CN;
Yifan Zeng, Beijing, CN;
Weihong Yang, Beijing, CN;
Qiang Wu, Beijing, CN;
Kai Pang, Beijing, CN;
Xinjiang Wei, Beijing, CN;
Xue Liu, Beijing, CN;
Xuan Xiao, Beijing, CN;
Aoshuang Mei, Beijing, CN;
Shihao Meng, Beijing, CN;
Chao Yu, Beijing, CN;
CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING, Beijing, CN;
Abstract
Disclosed is a method for repairing an aquifer in a coal mine area by grouting, including: drilling a survey hole in a ground area corresponding to a water inflow position from ground surface to a caving zone in a goaf; determining a target layer for grouting in the survey hole based on drilling data collected from the survey hole while drilling; changing the survey hole to a grouting hole; measuring a first water level from the grouting hole; grouting through the grouting hole; changing the grouting hole to an observation hole; measuring a second water level from the observation hole; and determining a water retention level based on the first water level and the second water level.