A new Roof Strata Cavability Index (RSCi) for longwall mining incorporating new rating system
Article
Article Title | A new Roof Strata Cavability Index (RSCi) for longwall mining incorporating new rating system |
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ERA Journal ID | 4022 |
Article Category | Article |
Authors | Mohammadi, Sadjad (Author), Ataei, Mohammad (Author), Kakaie, Reza (Author) and Mirzaghorbanali, Ali (Author) |
Journal Title | Geotechnical and Geological Engineering: an international journal |
Journal Citation | 37 (5), pp. 3619-3636 |
Number of Pages | 18 |
Year | 2019 |
Publisher | Springer |
Place of Publication | Netherlands |
ISSN | 0960-3182 |
1573-1529 | |
Digital Object Identifier (DOI) | https://doi.org/10.1007/s10706-019-00857-6 |
Web Address (URL) | https://link.springer.com/article/10.1007/s10706-019-00857-6 |
Abstract | This paper presents a new index to assess caving potential of roof strata above longwall panels. Nine inherent parameters were chosen as significant affecting factors in three categories, including roof strata characteristics, roof discontinuities properties and local features. Fuzzy hybrid multi criteria decision making was used by combining fuzzy analytic network process technique and fuzzy decision making trial and evaluation laboratory method to develop a new rating system. Subsequently, roof strata cavability index (RSCi) was defined as a simple summation of ratings for all parameters, indicating the cavability level qualitatively. The RSCi was applied to determine the cavability of various actual cases of worldwide longwall panels. In addition, the correlation between RSCi and span of main caving was examined where reliable performance of the new index was noted. It was concluded that RSCi is a simple and efficient tool to assess the cavability of immediate roof and evaluation of caving intervals in longwall mining. |
Keywords | longwall mining; immediate roof; caving potential; Roof Strata Cavability Index (RSCi) |
ANZSRC Field of Research 2020 | 400502. Civil geotechnical engineering |
401902. Geomechanics and resources geotechnical engineering | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Shahrood University of Technology, Iran |
School of Civil Engineering and Surveying | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q5642/a-new-roof-strata-cavability-index-rsci-for-longwall-mining-incorporating-new-rating-system
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