SHAFT STATION

·         The shaft station should be designed to withstand for Longer life span of mine For large out put

·         These are the connections between shaft and mine workings

·         They are driven at different horizons at which levels are to be established In steeply dipping deposits many shaft stations are require

·         In flat deposits only one shaft station is sufficient

·         In  steeply inclined deposits many shaft stations required

Design considerations of shaft stations depends on

1. ·          Type of deposit
2. ·         Mode of materials handling in the mine and shaft
3. ·         Water flow
4. ·         Ventilation requirements
5. ·         Mining equipment
6. ·         Access
7. ·         Out puts handled
8. ·         Inclination

PURPOSE OF SHAFT STATION

1. A.       For access
2. A.                 Transport of materials
3. A.                Raising out puts
4. A.                Ventilation
5. A.                Drainage
6. A.                Lighting
7. A.                Sampling
8. B.       Inclination
9. C.       Ventilation requirements
10. D.       Out puts handled
11. E.        Nature of strata
12. F.        Mining equipment
13. G.       Water flow
14. H.       Materials handled

 FACTORS FOR DETERMINING THE SIZE OF THE SHAFT STATION.

INCLNATION

·         Lower the inclination lower the height of the shaft station

·          needed for transportation of long  equipment from shaft to station

·         Greater the inclination more the height of shaft station

·         In vertical shaft the height of shaft station may be 6meters or more

·         In inclines the height of the shaft station may be 3m or more

·

VENTILATION REQUIREMENTS

·         The road ways should be of adequate cross section , with smooth lining with necessary insets may be driven

·         Quantity of air supplied per person 6m³/min

·         At sub stations the quantity of air supplied 300m³/min

·         At battery charging stations the quantity of air supplied 300m³/min

·         At pumping stations the quantity of air supplied 150 m³/min

·         Diesel loco roads 4-5 m³/min/ h.p of locomotive

·         the dimensions of the roadway in such a way the that air should flow without congestion

OUT PUT TO BE HANDLED

·         For drawing more out puts more dimensions of the roadways are required

·         Lesser out puts less dimensions of roadways

NATURE OF STRATA

·         In hard strata the shaft stations not required any supports, hence no extra dimensions of shaft stations

·         In moderate and weak strata permanent supports of shaft stations required, hence they need more dimensions of roads

·         Permanent support system is provided with

·      Brick lining

·      Concrete lining

·      Steel arches

MINING EQUIPMENT

·         The height of the shaft station determined by the length of the longest material transported rails,

·         timber etc

·         Inclination of the shaft

·         The width and length of shaft stations largely influenced by space needed for laying tracks

·         Dimensions of shaft station depends upon movement of equipment and storage of material

·         There must be sufficient room for movement of trucks and machinery without congestion

WATER FLOW

·         Dimensions of shaft stations depends on water flow

·         More inrush of water needs side chanels, to allow the water to collect in dips  which needs greater width of roads

·         For laying of pipe lines also needs lengthy dimensions of roads

MATERIALS HANDLED

·         The dimensions of shaft stations must be such that to allow convenient handling of all material delivered at and removed from that particular horizon