A Study of the Failure Characteristics of Partings in Thick Coal Seams During Fully Mechanized Caving in the Wobei Coal Mine

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Authors

  • Zhe Wang
     Anhui University of Science & Technology, Hefei, Anhui 230000, China, Shanxi Coal Co. Pingshuo Xiao Huigou Coal Industry Ltd., Co., Pingshuo, Shanxi 036000 ,CN

Keywords:

Fully mechanized caving; parting; top coal; failure

Abstract

Fully mechanized caving is a common practice in mining thick coal seams in China. The characteristics of parting failures affect the stability and cavability of the top coal. In this paper, based on the geological conditions of and partings in a production site in the Wobei mine, the characteristics of parting failures on the front of a working face are calculated using elasticity theory and the cavability of the coal seam and the parting are obtained. Based on the theory of a cantilever beam under a uniformly distributed load, the cantilever length and the conditions under which a parting at the back of a working face fractures are calculated. These results are combined to obtain the characteristics of parting failures in thick coal seams during fully mechanized caving in the Wobei mine. In addition, this provides basic parameters for improving the top coal caving ratio of a working face.

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Published

2022-10-20

How to Cite

Wang, Z. (2022). A Study of the Failure Characteristics of Partings in Thick Coal Seams During Fully Mechanized Caving in the Wobei Coal Mine. Journal of Mines, Metals and Fuels, 67(2), 105–110. Retrieved from https://www.informaticsjournals.com/index.php/jmmf/article/view/31495

Issue

Volume 67, Issue 2, February 2019

Section

Articles

License

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

 

References

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