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In general the it is better to mine a tunnel upgrade (uphill) rather than downgrade because...

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Civil Engineering

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

Answer & Explanation Solved by verified expert
3.7 Ratings (278 Votes)
Ans E All answers applyAll 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    See Answer
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