DOI: 10.11799/ce201712020
Gob-side roadway driving technology with roof-cutting pressure-relieving in deep mining
ZHANG Shuai
ZHANG Ji-zhou
LI Jian-feng
ZHANG Wei-dong
Abstract：In the traditional gob-entry driving work,there will be a trigonum of stress concentration between the goaf and the coal entity of next zone,and the large deformation,rock burst and gas rush will appear in the roadway construction of the next zone,which cause the high support cost,complicated construction procedure and the uneasy drift in the coal mines as well as the low rate of progress.Based on the above mentioned difficulties,we carried out the research on the gob-entry driving practice after pressure relief by roof cutting in big mining depth in Zhangshuanglou Coal Mine.We found out the parameters for the cutting depth,the spacing of wells and the explosive load in this mine.By roof cutting,the broken rock could increase the capacity of supporting the overlying rock while reduce length of the cantilever beam.The stress trigonum will reduce or disappear,which helps solve the stress concentration of the next zone.
Keywords：deep mininggob-entry drivinggob-side roadway drivingroof-cutting depthoverlying strata
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 77-79,82 )