Civil Engineering :: Tunneling
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In the wooded bulk-head, used for mucking in steep grade tunnels,
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Railway tunnels, are generally
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Pick up the explosive used for tunnelling in soft rocks from the following :
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The cut of a tunnel face is shown in given figure. This is called
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For B.G. single track, the section of the tunnel must have a width
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Which one of the following methods is generally adopted for tunnelling in firm ground
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An overhead track on a large truss frame is required in case of car changer by
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Pick up the correct statement from the following:
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In the given figure drill holes, heading, mucking and benching are mumbered as 1, 2, 3, 4 The correct sequence is :
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The length of the needle beam used in needle beam method of tunnelling is usually
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A.
The topographical maps of the Survey of India are useful in the mountainous region for tunnelling.
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B.
The height point on the ridge is fixed with the help of reciprocal ranging
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C.
The accuracy of 1 in 10, 000 is required for planimetric control
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D.
1 second theodolite is used for angular measurement to achieve an angular error of 15 N where N is number of angles
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E.
All the above.
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