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

A circular curve having a radius of curvature of \(1000\) m is set out by connecting two straights with a deflection angle of \(60^{\circ}\). The apex distance, in \(m\), is . (Rounded off to three decimal places)

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)