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WorksheetsTunnel design philosophy
Total questions: 10
Worksheet time: 5mins
Soft ground tunnels are
deals with weak rock formation
at cover depth of 2 times diameter
usually use Tunnel Boring Machine
all of them
Tunnel is four dimensional problem (ie., arch pressure, face pressure, transverse/longitudinal pressure and (a) )
Design of tunnel lining is not a structural problem, but a ground-structure interaction problem, with the emphasis on the (a)
Tunnel-soil finds equilibrium and reach stability
via allowable movement of tunnel joints
soil redistribution
tunnel distortion (bulge in and out in the same time)
experience compression and tension in same time
all of them
Tunnels only bear compression form earth load
TRUE
FALSE
Safety features in tunnel is important such as follows EXCEPT
to provide railing
lighting
CCTV
Top part of tunnel (in circular shape tunnel is called as) ______
invert
crown
springline
wall
In general, there are four phases to complete a tunnel design project
Feasibility study; Comparable study; Design
Feasibility study, Comparable study; Design; M&E & Architectural
Feasibility study; Comparable study & Design; Constructions; Mechanical & Electrical & Architectural
Transverse surface settlement is induced ground movement due to tunnel at
cross section tunnel's excavation
longitudinal tunnel's excavation
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