Sliding floor eliminates lost time in laying rail at working face and reduces time for switching loaded and empty muck trucks; it moves forward and keeps rail at tunnel face, thus increasing time available for drilling, blasting and mucking; each of sliding floors used in Snowy Mountains project in Australia is 430 ft long, 13 ft wide and consists of 14 sections; floor moves like caterpillar; heavy rail is mounted on outer sides to carry drill and ventpipe jumbos; self-contained hydraulic unit is mounted at rear of floor.
Sliding floor technique speeds up tunnelling
South African Min Eng J
South African Mining and Engineering Journal ; 74 , n 3697
1963
Article (Journal)
English
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