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Not clear what there was to flood to 30m... was it the airshaft perhaps?
And the rising line - was it to avoid going into the unstable shale? (I dimly recollect this was a problem at Woodhead?)
I'd assumed it was limestone, and also with Totley (I remember it as Dore and Totley like the station) and the water was from springs. The tunnels are each end of the Hope Valley, so my assumption was, they were limestone outcrops around the shale in the valley. I'll have to ask a geologist. Chevin 22:00, 1 October 2005 (UTC)
The bit about the flooding isn't clear. A response above states that they drilled a header shaft and then worked outwards. But the article itself talks about the headings meeting, which sounds like they worked inwards from either end. Which is correct? -- David Edgar ( talk) 22:33, 30 January 2017 (UTC)
This article is rated Start-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Not clear what there was to flood to 30m... was it the airshaft perhaps?
And the rising line - was it to avoid going into the unstable shale? (I dimly recollect this was a problem at Woodhead?)
I'd assumed it was limestone, and also with Totley (I remember it as Dore and Totley like the station) and the water was from springs. The tunnels are each end of the Hope Valley, so my assumption was, they were limestone outcrops around the shale in the valley. I'll have to ask a geologist. Chevin 22:00, 1 October 2005 (UTC)
The bit about the flooding isn't clear. A response above states that they drilled a header shaft and then worked outwards. But the article itself talks about the headings meeting, which sounds like they worked inwards from either end. Which is correct? -- David Edgar ( talk) 22:33, 30 January 2017 (UTC)