The Effects of Caving of a Coal Mine’s Immediate Roof on Floor Strata Failure and Water Inrush

International journal of mine water - Tập 35 - Trang 337-349 - 2015
Dongjing Xu1,2, Suping Peng1, Shiyao Xiang2, Mingxing Liang1,2, Wenming Liu3
1State Key Laboratory of Coal Resource and Safe Mining, China University of Mining and Technology, Beijing, China
2College of Geoscience and Surveying Engineering, China University of Mining and Technology, Beijing, China
3Xi’an Research Institute Co. Ltd. of China Coal Technology & Engineering Group Corp, Xi’an, China

Tóm tắt

Large scale roof strata caving that occurs during coal extraction can irreversibly damage floor strata and result in riskier mining operations. Four research models incorporating floor water pressure were assessed for floor strata failure, using eight methods and two classification systems. A connection between floor strata failure and the coefficient of impact risk was developed. The derived equations represent a potentially effective method for providing a preliminary assessment of the risks associated with floor strata failure due to caving. A classification system of floor failure potential can be constructed to minimize risks during mining.

Tài liệu tham khảo

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