A device for roof support of underground mine/tunnel

摘要

The present invention provides a device useful for supporting underground mine/ tunnels. The device continuously monitors the roof load coming over the canopy and correspondingly yielding/convergence indicated by the pointer on graduate scale. The roof load coming on the canopy is transmitted to the prop via a set of steel disc springs to increase the yielding and longevity of the present device. The present invention has mechanism for preloading upto the desired load. It is a simple, easily transportable and user friendly device having quick release mechanism from a safe distance.