Question

In general the it is better to mine a tunnel upgrade (uphill) rather than downgrade because the upgrade has (a) more favorable discontinuity orientation (b) water in tunnel will drain away from tunnel face (c) gravity better assists in mining tunnel face (d) downgrade from tunnel face speed up muck removal (e) all answers apply

Answer 1

Ans : E) All answers apply/All of the above , are applicable while tunneling uphill because the rock mass has an important influence on the land which the miner have to work on , they have to keep a check on the soil strata and the orientantion of the land so that they should be minning in the right direction , while tunneling there should be a way for the water to drain out of the tunnel , in tunneling gravity plays a vital role always which make the job for the miners much easier because they are working with gravity not againt it , while tunneling uphill you can clean up the tunnel by removing the much from downgrade side . Thats why it is very much important to tunnel uphill so as to provide ventilation that can take place and also the removal should be made easy . So the answer to you question is E) All answers apply or all of the above .

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