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- W2364325100 abstract "Aiming at hard roof,large initial weighting pace and high weighting intensity of 28412 mining face in Guandi Colliery,basic parameters of forced roof caving in initial mining period were confirmed including roof caving height,blast-hole diameter,blast-hole gap,hole sealing length and blast-hole layout manner.Core deep-hole blasting explosive shell charge technology was firstly applied.Application showed that when mining distance reached 14.4m,top-coal except face-ends had all caved,gob had been stowed closely.This largely reduced initial weighting intensity and there were no phenomena of typhoon and gob methane instantaneous gushing,which effectively enhanced safety degree in initial mining period." @default.
- W2364325100 created "2016-06-24" @default.
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- W2364325100 date "2013-01-01" @default.
- W2364325100 modified "2023-09-26" @default.
- W2364325100 title "Practice of Forced Caving Technology during Initial Mining Period in 28412 Mining Face of Guandi Colliery" @default.
- W2364325100 hasPublicationYear "2013" @default.
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