List of top Mining Geology, Mine Development and Surveying Questions asked in GATE Mining Engineering

Water is pumped from a mine sump at the rate of 300 m³/hr to an inverted conical water tank, as shown. The rate of rise in water level in m/min, at the instant water level reaches at 5 m height from bottom of the tank, is____.(round off up to 2 decimals)

In a tacheometry survey, the readings observed are given.

Instrument Station	Staff Station	Bearing of line of sight	Vertical angle	Staff  readings (m)
p	A	145°	+8°	1.2, 1.7, 2.2
	B	205°	+3°	0.8, 1.2, 1.6

The additive and multiplying constants of the instrument are 0 and 100, respectively. The length of the line AB in m, is____.(round off up to 2 decimals)

A scanline survey between points A and B of a rock mass is shown. Consider
RQD =100×(0.12+1)×exp(−0.1λ), 
where, λ is the frequency of discontinuity per m. The RQD of the rock mass is_____. (round off up to 2 decimals) 

A rectangular development heading of dimension 3 m x 2.8 m is to be blasted with holes of 2.4 m in length. If the pull factor is 0.95 and swell factor is 1.20, the volume of blasted rock per round, in m³, is_____.(round off up to 2 decimals)

The percentage Fe and corresponding net value for an iron ore mine is given below

Fe (%)	Net value (INR per tonne)
58	4000
62	4500

Assuming net value versus grade curve to be a straight line, and mining cost of waste is INR 1000 /m³; the correct representation of stripping ratio, SR (m³/tonne) versus Fe (%) grade curve is

A rectangular mine airway of 2.0 m width and 2.5 m height has a bend with deflection of π/4 radian. If the radius of curvature of the bend is 4.0 m, the shock factor of the bend is (round off to three decimals)