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"The April rain, the April rain,
Comes slanting down in fitful showers,
Then from the furrow shoots the grain,
And banks are fledged with nestling flowers;
And in grey shawl and woodland bowers
The cuckoo through the April rain
Calls once again."

Mathilde Blind, April Rain
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what do you know about tunnels?

mariahmariah Posts: 31 ✭✭
:) :blush:


  • mheredgemheredge Teacher Here and therePosts: 31,042 mod
    I know that the Train des Merveilles in thé Alpes Maritimes that goes from Nice to Tende, a distance of about 80 kilometres has more than 80 tunnels, with the longest being about 6 kilometres long @mariah.

    What sort of tunnels are you referring to?
  • mariahmariah Posts: 31 ✭✭
    @mheredge i am searching about hydraulic tunnels
  • mheredgemheredge Teacher Here and therePosts: 31,042 mod
    What exactly are hydraulic tunnels @mariah?
  • mariahmariah Posts: 31 ✭✭
    They are tunnels which contains pipe to distribute water
  • mheredgemheredge Teacher Here and therePosts: 31,042 mod
    @mariah are these tunnels built around dams? Are they to do with hydro-electricity?
  • mariahmariah Posts: 31 ✭✭
    Yes @mheredge ,they are used to give water to people,to irrigate .But dams are used to keep water and to product electrical energy and a lot of benefic things
  • mheredgemheredge Teacher Here and therePosts: 31,042 mod
    In Nepal there are many hydro projects and I think now just about every river has a dam somewhere. It's a shame that there has not been any planning, as it can also do untold damage to the environment if not handled properly. Unfortunately everyone wants to get rich quick and to hell with the consequences @mariah.
  • mariahmariah Posts: 31 ✭✭
    do you mean that building dams products pollution @mheredge
  • mheredgemheredge Teacher Here and therePosts: 31,042 mod
    No @mariah, the change in water levels can adversely affect the plants and animal life around in and around the river banks. The flow of the water usually decreases, which can also change the eco-system around the river. Fish also have a problem moving from one part of the river to another, which for some fish can spell their extinction. The building of dams further up the Mekong River will spell disaster for the millions of people living in the Mekong Delta area.
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