Numerical Simulation of Strata Behavior in Super-Long and Large Mining Height Working Face

Zhi Hua Li; Xin Zhu Hua; Ruo Jun Zhu; De Sheng Zhou

doi:10.4028/www.scientific.net/AMR.634-638.3428

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 634-638Numerical Simulation of Strata Behavior in...

Numerical Simulation of Strata Behavior in Super-Long and Large Mining Height Working Face

Abstract:

In order to study the strata behavior characteristics in super-long and large mining height working face, the FLAC-3D software was used to study the roof displacement and the abutment pressure distribution laws of working faces. The results indicate that: ① the influence range is larger of front abutment pressure in Liuzhuang coal mine 171301 super-long large mining height working face, and reaches to 60m. ② the maximum roof displacement increases with the increase of mining depth and working face length, the increase in magnitude decreases gradually, while the maximum roof displacement sharply increases due to the increase of mining height. ③ the peak abutment pressure increases with the increase of mining depth and mining height, the location of peak abutment pressure transfer to ahead of the coal wall. ④ the effect of working face length on abutment pressure is very feeble, so, the strata behavior characteristics remain almost constant with the increase of face length.

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Periodical:

Advanced Materials Research (Volumes 634-638)

Pages:

3428-3432

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.634-638.3428

Citation:

Cite this paper

Online since:

January 2013

Authors:

Zhi Hua Li, Xin Zhu Hua, Ruo Jun Zhu, De Sheng Zhou

Keywords:

Mining Height, Numerical Analysis, Roof Displacement., Strata Behavior, Super-Long and Large Mining Height Working Face

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