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- W3144797034 abstract "In order for further research on the overburden failure height of fully mechanized caving face,taking 15 mextra-thick coal seam of Tongxin Coal Mine as the research object,the demonstration was carried out by many meth-ods. Applied critical layer theory and material mechanics theory,overburden failure was analyzed as mining face mov-ing. The results show that overburden failure maximum height is 174. 6 m,the inferior key strata controlls overburdenfailure development and the main key stratum restrains overburden failure development. By adopting EH-4 magnetotel-luric methods and numerical simulation methods,the height of overburden failure was determined as 150-172 m re-sult,in consistent with theoretical calculation,theoretical calculation method can be highly effectively predicted. Thestudies show that the overburden failure height of fully mechanized caving face is 10. 0-11. 5 times the height of min-ing in Tongxin Coal Mine and key strata controlls overburden failure development." @default.
- W3144797034 created "2021-04-13" @default.
- W3144797034 creator A5061064628 @default.
- W3144797034 date "2014-01-01" @default.
- W3144797034 modified "2023-09-25" @default.
- W3144797034 title "Overburden failure height of superhigh seam by fully mechanized caving method" @default.
- W3144797034 hasPublicationYear "2014" @default.
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