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Application filed by Трест "Кривбасшахтобуд", Трест "Кривбассшахтострой"filedCriticalТрест "Кривбасшахтобуд"
Priority to UA94022021ApriorityCriticalpatent/UA10652A/en
Publication of UA10652ApublicationCriticalpatent/UA10652A/en
Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage
(AREA)
Drilling And Exploitation, And Mining Machines And Methods
(AREA)
Abstract
Method for deepening and penetration of capital vertical workings includes penetration of upraise from preparatory horizon at axis of capital working, reaming of upraise from down upwards with use of end blast holes drilled in fans from upraise, cutting of capital; working, storing of broken rock, its discharge on preparatory horizon and loading to transportation means, arrangement of permanent timbering. At cutting capital working and reaming of upraise by design contour of capital working one leaves contour berm with thickness from 0.5 to 1.0 of value of least resistance line (LRL) of end blast hole charges. End blast holes are under-drilled to design contour of capital working by 0.3-0.7 of LRL value.
UA94022021A1994-02-161994-02-16Method for deepening and penetration of capital vertical workings
UA10652A
(en)