公开(公告)号：US12196076B1

公开(公告)日：2025-01-14

申请号：US18750211

申请日：2024-06-21

Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING

Inventor： Yifan Zeng ,  Weihong Yang ,  Qiang Wu ,  Xinjiang Wei ,  Xuejun Wang ,  Kai Pang ,  Xuan Xiao ,  Xue Liu

IPC: E21B49/00 ,  E21B7/04 ,  E21B21/06 ,  E21B33/138

Abstract: Disclosed is a grouting and water blocking method for a hard rock stratum. The grouting and water blocking method include the following steps. At first, hydrogeological information and coal seam information of a hard rock stratum is obtained. Then, a drilling trajectory of the hard rock stratum is determined based on the hydrogeological information and the coal seam information. Later, at least one drilling device is determined corresponding to the drilling trajectory based on types of multiple rock layers contained in the hard rock stratum. After that, the multiple rock layers contained in the hard rock stratum are drilled sequentially according to the drilling trajectory using the at least one drilling device. At last, in response to determining there is a water leakage area, the water leakage area is grouted.