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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 June 5, p. 901 and Oct 9 p 534, vol. 122, nos. 3299 and 3301; S. Wales Inst. Engrs. -- Proc., vol. 47, no. 3, pt. 1, Sept. 15, 1931, pp. 483-525 and (discussion) 526-545, 30 figs. partly on supp. plates; Colliery Guardian, vol. 142, nos. 3673 and 3674, May 22, 1931, pp. 1797-1800, and May 29, pp. 1887-1889, 12 figs discussion in no. 3676, June 12, pp. 2060-2062,)
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 June 5, p. 901 and Oct 9 p 534, vol. 122, nos. 3299 and 3301; S. Wales Inst. Engrs. -- Proc., vol. 47, no. 3, pt. 1, Sept. 15, 1931, pp. 483-525 and (discussion) 526-545, 30 figs. partly on supp. plates; Colliery Guardian, vol. 142, nos. 3673 and 3674, May 22, 1931, pp. 1797-1800, and May 29, pp. 1887-1889, 12 figs discussion in no. 3676, June 12, pp. 2060-2062,)
Roof control in longwall workings
Iron Coal Trades Rev
Carson, J.S. (author)
1931
Bibliography
Article (Journal)
English
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Roof control in longwall workings
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