Study on Lateral Support Pressure Distribution of Fully-Mechanized Coal Mining Face in Ultra Thick Seam
XU Yong-xiang
LI Hua-min
WANG Kai-lin
YUAN Rui-fu
Abstract：In order to solve the serious resource waste caused by sectional coal pillars,serious mine strata pressure behavior in the gateway and other problems in Tashan Mining Area,the similar simulation method was applied to study the lateral support pressure distribution fea-tures after the mining of the fully-mechanized top coal caving mining face in ultra thick seam and provide the theoretical basis to the opti-mized design of the coal pillar width for the gateway driving along the goaf in Tashan Mine.The results showed that the lateral support pres-sure influence scope of No.8206 Coal Mining Face in Tashan Mine was 60~70 m,the stress reduced zone was 11 m,the stress peak was 41 MPa in the location of 30 m in front of the coal wall and the stress concentration coefficient was 3.3.The similar simulation results and limit balance theoretical calculation results were the same to the site seismic monitoring and measuring results. Thus when the coal pillar width was less than 6 m and the gateway was in the stress reduced zone,the coal pillar width obtained was 6 m.
Keywords：ultra thick seamfully-mechanized coal mininglateral support pressuresimilar simulationgateway driving along goaf
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 26-28 )