Failure Characteristic and Fracture Evolution Law of Overburden of Thick Coal in Fully Mechanized Sub-level Caving Mining
نویسندگان
چکیده
منابع مشابه
Characteristics of Strata Behavior during Thick Seam Mining by Fully-Mechanized Top Coal Caving in a Loess-Covered Gullied Region
This study systematically investigates the overburden movement and strata behavior at a fully-mechanized top coal caving (FMTCC) face in a thick coal seam in a loess-covered gullied region by field measurement and theoretical analysis. A comparative analysis was performed to examine how the attitude of surface gullies and the structure of overburden affect face support resistance. The character...
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China produces and consumes most of coal in the world. This situation is expected to continue within a certain period in the future. Currently, Chinese coal industry is confronted with several serious problems relating to land resource, water resource, environmental, and ecological sustainability. Coal resource exploitation causes the permanent fracture and movement of strata structure, which h...
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Hongzhi Wang 1, Dongsheng Zhang 2,*, Xufeng Wang 1 and Wei Zhang 3 1 School of Mines, China University of Mining and Technology, Xuzhou 221116, China; [email protected] (H.W.); [email protected] (X.W.) 2 State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou 221116, China 3 IoT Perception Mine Research Center, National and Local Joint ...
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The results of the interaction between coal failure and mining pressure field evolution during mining are presented. Not only the mechanical model of stope and its relative structure division, but also the failure and behavior characteristic of coal body under different mining stages are built and demonstrated. Namely, the breaking arch and stress arch which influence the mining area are quanti...
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ژورنال
عنوان ژورنال: Sains Malaysiana
سال: 2017
ISSN: 0126-6039
DOI: 10.17576/jsm-2017-4611-04