Study on Roof Caving Zone Height in 1304 Working Face in a Coal Mine
FU Jiaju
JIANG Zhenquan
ZHANG Yao
ZHU Ruijie
Abstract： Based on the composition and structural characteristics of the floor and roof rock strata in 1304 working face in a mine,composition and structural properties of the 1304 coal face in a coal mine,an engineering geological model that can reflect the composition of the complete roof strata was established,analysis was made on the roof stress and the distribution characteristics of the plastic zone by FLAC3D numerical simulation in the mining process of the coal seam,and 64m roof fall height of the coal seam being mined was obtained. Combined with the results obtained by analogy method,it came to the conclusion that the roof fall height of 1304 working face was 34. 6~77. 5m.
Keywords：roof fall heightnumerical simulationanalogy methodmining
Publication Date：2013-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 66-68,72 )