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A platform for research: civil engineering, architecture and urbanism
Mathematical study of stresses set up in subsiding strata; factors affecting roof movements; rate of advance of face; regularity of advance; method of packing; method of supporting face; in South Wales coal mines, ultimate total subsidence approaches 50 per cent of thickness of seam; other effects which must be studied are presence of gas, ventilation of face and maintenance of roads; use of steel props and steel arch girders is urged. (See also - (discussion) p 526-545; partly on plates; Colliery Guardian, vol. 142, nos. 3673 and 3674, May 22, 1931, pp. 1797-1800, and May 29, pp. 1887-1889, 12 figs. and discussion in no. 3676, June 12, pp. 2060-2062, and Iron and Coal Trades Rev., vol. 122, nos. 3299 and 3301 and vol. 123, no. 3319, May 22, 1931, p. 827 and (discussion) June 5, p. 901 (Supp.))
Mathematical study of stresses set up in subsiding strata; factors affecting roof movements; rate of advance of face; regularity of advance; method of packing; method of supporting face; in South Wales coal mines, ultimate total subsidence approaches 50 per cent of thickness of seam; other effects which must be studied are presence of gas, ventilation of face and maintenance of roads; use of steel props and steel arch girders is urged. (See also - (discussion) p 526-545; partly on plates; Colliery Guardian, vol. 142, nos. 3673 and 3674, May 22, 1931, pp. 1797-1800, and May 29, pp. 1887-1889, 12 figs. and discussion in no. 3676, June 12, pp. 2060-2062, and Iron and Coal Trades Rev., vol. 122, nos. 3299 and 3301 and vol. 123, no. 3319, May 22, 1931, p. 827 and (discussion) June 5, p. 901 (Supp.))
Roof control in longwall workings
S. Wales Inst. Engrs. -- Proc
Carson, J.S. (author)
1931
43 pages
30 Figs., Bibliography
Article (Journal)
English
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Roof control in longwall workings
| Engineering Index Backfile | 1931
Roof control in longwall workings
| Engineering Index Backfile | 1931
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