Causation Analysis of Roof Cutting and Support Crushing in Shallow-Buried Large Mining Height Long Wall Working Face of Western China

Yan Fang Ren; Gang Xu; De Bing Mao; Jiang Liu

doi:10.4028/www.scientific.net/AMR.524-527.548

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 524-527Causation Analysis of Roof Cutting and Support...

Causation Analysis of Roof Cutting and Support Crushing in Shallow-Buried Large Mining Height Long Wall Working Face of Western China

Abstract:

During the mining process of shallow buried long wall working face, the breaking of main roof easily result in fracture belt’s connectivity with the surface. The paper has studied the causation of roof cutting and support crushing in shallow-buried large mining height long wall working face of Suancigou coal mine which is in Ordos Inner Mongolia. The main reasons are as follow, poor effect of forced roof caving; unreasonable structure type of support; lower setting load; unevenly stressing between front and rear columns; low advancing speed or the working face. So in order to avoid the fully mechanized supports crushing accident, the working face advancing speed should be accelerated during the period of the pressure change of working face.

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Periodical:

Advanced Materials Research (Volumes 524-527)

Pages:

548-551

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.524-527.548

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Online since:

May 2012

Authors:

Yan Fang Ren, Gang Xu, De Bing Mao, Jiang Liu

Keywords:

Advance Speed, Forced Roof Caving, Shallow Coal Seam, Support Crushing

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References

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