Analysis on reasonable width of gateway section in No.3 panel of Zhaozhuang Coal Mine
ZHANG Yi
LIU Dong
LUO Lang
FAN Longfei
XUE Lei
DONG Ning
LI Tie
Abstract：In order to study the most reasonable gateway width of coal face 3307 of Zhao Zhuang Coal Mine,by using the theory of elastic and plastic mechanics,the theories of thin plate,and related supporting theory in the research,the relationship between the mid-span of gateway and its width was obtained.Theoretical study showed that the roof is in pre-pressure state,surrounding rock is relative stability,roof subsidence is also in line with the safety value when the geteway width is less than 4.8 m.With the increase of the gateway width,roof span deflection increases rapidly until coal gateway roof damage when the section width is greater than 4.8 m.The theoretical calculation results determine that the most reasonable value of geteway width of coal face 3307 in Zhaozhuang coal mine is 4.8 ～ 5.2 m.The result not only guides the design for Zhaozhuang coal mine,but also provides a reference for other coal mines.
Keywords：gatewayroof span deflectionthe theory of thin plategateway width
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：6( 17-22 )