LAYOUT OF FIVE YEAR EXCAVATION AREA
Before the start of mining excavation its a important duty of mine surveyor layout of excavation area . surveyor study the layout plan of year wise and lay out on the ground.
this plan is prepare according the requirement of mineral ,
study the geological repot
economic point of view.
From the geological plan study the bore hole , geological disturbance , cut of ratio etc
In the layout plan fixed the striping ratio year wise. this lay out plan surveyor demark on the ground.
For this work surveyor calculate the co-ordinates of top edge of excavation from lay out plan.
A base line mark on the ground from total station or RTK GPS . Calculate the co-ordinates of the top edge of the proposed excavation and co-ordinates mark on the ground. Draw the propped section at interval 100 mt . Calculate the quantity of over burden and coal . In the calculation following point not ignored.
(1) the proper bench system according the mine safety rule .
(2) the geological disturbance.
SEE ALSHO:-
