Strata worldwide was founded on its line of engineered secondary roof supports for underground coal mining.
Mine roof support.
Rib control white and reflective tensar tx and bx mining grid products provide effective rib control for soft minerals while tensar ux3340 roof mats and minex rock mesh address the most demanding hard rock and tunneling applications.
Dry and seasoned sal hindi sakhwa props and bars are used in some parts of maharashtra and pench valley coalfields where teak growth is plentiful.
Timber is the most commonly used material for support in a mine as it is cheap and easily available.
For example the working height may reduce or the density may need to increase.
Barczak2 abstract roof supports can only be understood in conjunction with the rock structure that they support.
Roof support reconfiguration throughout the life of a mine the operational parameters for the powered roof supports can change.
Sal props are available in lengths upto 9 m.
The strength of the rock depends on geology and the loads are applied primarily by the in situ and mining induced stresses.
The can handles mine floor heaving and roof sag better than any other type of support available today.
Fundamentals of coal mine roof support by christopher mark ph d 1 and thomas m.
We will continue to explore and transform chemical solutions into innovative new products.
Originally introduced in 1993 the strata propsetter support system remains one of strata s top selling support props through out the world.
Deep level mining roof support system mine support products flagship product is rocprop an all steel elongated support system designed to maintain load bearing characteristics in both static and dynamic load conditions.
The can is a yieldable secondary roof support made from a confined core of cementitious composite encased in a cylindrical steel canister which resembles a can.