Civil Engineering - Tunnelling - Discussion

Discussion :: Tunnelling - Section 1 (Q.No.1)

1. 

Which one of the following statements is not correct for heading and benching method of tunnelling ?

[A]. Drilling and mucking can be done simultaneously
[B]. Benching provides a plateform for working on heading
[C]. Removal of muck from the heading is very easy
[D]. None of these.

Answer: Option C

Explanation:

No answer description available for this question.

Mridul Agarwal said: (May 14, 2016)  
Can anyone explain this?

Tshering said: (Jul 13, 2017)  
Drilling and mucking can be done simultaneously is the correct answer asper the above statement.

Sonam Phuntsho said: (Jan 6, 2019)  
How drilling and mucking can be done simultaneously?

Andresle said: (Mar 9, 2019)  
I don't understand the answer to this question.

How the jumbo could access the face of the tunnel in order to drill if the muck is still placed at the face of the tunnel? As far as I know, both tasks can't be done simultaneously until at least the muck will have been removed in part.

In addition, why is not very easy to remove the muck in the top heading phase. I understand the relative difficulty in removing the muck starts during the benching operation (in case of two lateral benches).

Please, anyone, explain.

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