doi:10.16186/j.cnki.1673-9787.2020100044

Received:2020/10/20

Revised:2021/04/06

Published:2022/05/15

Identification system of roof strength of coal mine while drilling and optimization study on drilling speed

YU Guangdong , MENG Guoying , FENG Xuewen

School of Mechanical Electronic & Information Engineering, China University of Mining & Technology (Beijing) , Beijing 100083 , China

Abstract: In order to identify the uniaxial compressive strength of the roof in real time while drilling and to further optimize the drilling speed of the bolter during the process of supporting coal mine roadways ,the uniaxial compressive strength identification system for roadway roof while drilling was proposed ased on the pneumatic bolters , sensors and controllers to monitor the drilling parameters of the system. On basis of the torque and speed of the pneumatic motor,and the pressure and speed of the outrigger cylinder,the uniaxial compressive strength of the roof of the roadway was identified. The calculation formula for identifying drilling parameters while drilling of roof strata was derived. The power characteristic curve of pneumatic motor was used to optimize the drilling speed. The identification test system of roof strata while drilling was developed to solve the problems of misunderstanding and economic cost of roof strata survey ,so as to further improve the safety of underground coal mine operation.

Key words:roof rock layer;pneumatic;identification while drilling;uniaxial compressive strength

煤矿巷道顶板强度随钻识别系统与钻速优化研究_于广东.pdf