Rivulets
“The short-term gains in increased efficiency of coal extraction (and profit from sales) may come at the expense of the long-term sustainability of Sydney’s metropolitan drinking water supply and environments,”…
“The short-term gains in increased efficiency of coal extraction (and profit from sales) may come at the expense of the long-term sustainability of Sydney’s metropolitan drinking water supply and environments,”…
November 5th, 2007 at 9:30 am
Ironic that when I clicked on the slideshow before it started there was an advert for the new Hummer….
November 5th, 2007 at 9:36 am
That stuff is so bad and anyone with half a brain would never swallow the “it makes it back to the surface” argument. The surface water will run through the fissures that propagate from mine level 100m below ground to the surface. The mine collapsing after the coal has been extracted is part of the design. People are just so fixed on getting the coal out that they forget about everything else. Perhaps they can do a Macarthur River style diversion or Morwell River like this http://www.mcarthurriver.com.au/web_images/Morwell_River_Div_workers.jpg in Victoria. Ahh engineers, it looks almost as good as a natural river yes?!…
November 5th, 2007 at 3:42 pm
Benwah, the irony was not lost on me either…
November 5th, 2007 at 3:45 pm
tt, I like how they harden the channel with rocks and then add a big piece of timber - which are usually placed to enhance scour and develop hydrological diversity (i.e., different flow velocities) - right on top of it. Note the gal. chain - like that’s going to hold a 4000 kg tree in a flood. Fucking noobs in their fluoro jackets!
November 6th, 2007 at 7:16 am
Nothing like a nice even radius, uniform channel width and consistant bank slopes to make a text book perfect channel. Easy to calculate different variables you know!
I’ve been having the pleasure of such thinking thrown at me over the past year. It’s getting a bit dry.
tom: Strangly the scour protection just stops, ummm….. ok? But at least there is some LWD, ok 1 LWD. Maybe they got if from the LFS and could ony afford the single peice!