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Hauling system for de-mucking from an inclined shaft Print This Page

Normally, during tunneling operations, removal of muck from a blast is done by trucks that are loaded by an excavator. This is harder when the shaft is inclined. The excavation has to proceed from the top. The blasted muck will lie at the bottom of the excavation. Excavators and trucks cannot make it down. The shaft for the irrigation projects are at 45o to the horizontal. Navayuga designed an ingenious winch based arrangement for removal of muck. The arrangement consists of a winch for hauling, wire sheaves for changing the direction of pull, wire ropes for transferring the force and a trolley on rails for carrying the muck. This arrangement came in handy for transporting people to the tunnel face and back. Later on, the same arrangement was utilized for lowering the steel liners.