- 50 pieces, demolition folding panels, panels and whiteboards, - 303 m 2 dust and building walls, - 3 building doors, - cover 745 m 2 of ground, cardboard, - 28 pieces of demolition sanitary objects, - 37 pieces demolition interior doors, steel frames 1-flg., - 18 pieces demolition interior doors alu-glass 2-flg., - 85 m 2 demolition window alu-glass, - 100 m 2 dismantling wood and shaft lining
, - 105 m 2 demolition masonry, 11-5-24 cm, - 780 m disassembly of component joint mass, - 55 m 2 demolition outer wall glass blocks, - 2 090 m 2 demolition suspended ceiling, panel and grid ceiling, - 990 m 2 demolition mineral wool, - 1 540 m 2 demolition flooring.
"That's a big improvement when it comes to raise boring or shaft lining
Because the shaft is subjected to the coupling of underground water pressure and other loads during the entire service period, partial function of shaft lining
structure will be lost, or a water inrush accident may even occur.
For those deep mines, the protected structures called the shaft lining
for transporting labors and minerals become a kind of necessary infrastructure.
Wet-mix shotcrete has been specified for the final shaft lining
, and the local subsidiary of Swiss-based specialist supplier, MBT, won a R1.5 million contract to provide materials and admixtures for the shotcrete.
The stability of a shaft, especially within the superficial soil layer near the ground surface, relies heavily on the shaft lining
. During the operational life of a mine, shaft stability is essential in order to ensure economic viability of mining operations and to safeguard against injury and loss of life.
Instead of the costly excavation of slots, only used for a temporary station, shaft water rings are used to collect both the water which seeps through the shaft lining
and water coming from the in-shaft pumps.
3.Closing of small opening of shaft lining
at 9 Pit Chandmari Section on surface of Bastacolla Colliery.
The shuttering mainly in use is a self-stripping shaft lining
shutter designed by a Donetsk shaft-sinking firm.
consisted of 3.03-m-dia steel-plate segments, each 13.5 m long and weighing about 9 mt.
Brick partitions installation (shaft lining
) 84 m2;
Contract notice: Replacing the shaft lining