公开(公告)号：US20220282619A1

公开(公告)日：2022-09-08

申请号：US17752842

申请日：2022-05-24

Applicant: Taiyuan University of Technology

Inventor： Guorui FENG ,  Yijiang FAN ,  Pengfei WANG ,  Chenliang HAO ,  Xiaoze WEN ,  Jun GUO ,  Jinwen BAI ,  Tingye QI ,  Jianan LIU ,  Linjun ZHU ,  Changquan WU

IPC: E21D20/02 ,  E21C41/18 ,  E21D21/00

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.