DOI: 10.11799/ce201802018
Research and application of rib spalling prevention and control technology in upward mining of double-unit face
ZHU Zhan-bin
QIU Xiao-xiang
WANG Chen-hui
Abstract：According to the actual geological conditions of 21608 fully mechanized coal mining face in Chengjiao Coal Mine, the instability mechanism of coal wall and its influencing factors in deep inclined coal face are analyzed. On the basis of strengthening the management of support position and initial support force, a three-level prevention and control system for rib spalling is studied and applied, which comprised optimization of working face mining technical parameters, combined support of single prop shed and FRP bolt, advance grouting reinforcement. The field practice showed that:after the above technical measures were implemented, the rib spalling range was under control and shrinking dynamically, and realizing significant safety and economic benefits. The study provides references for the face layout and rib spalling prevention under other similar conditions, and lays the foundation for improving the recovery rate of coal resources.
Keywords：steep slopeupward miningrib spalling prevention and controlgrouting reinforcement
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 66-69 )