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New approach to estimation of mining subsidence
Most suitable position for subsidence to be estimated is above rib-side of working face, also perpendicular to seam gradient, and position of zero subsidence; method of estimation can be applied to seam gradients up to 20° and extraction of seam by single unit longwall face of constant width. (See also Instn Min Engrs -- Trans v 118 pt 11 Aug 1959 p 692-706 (discussion) 707)
New approach to estimation of mining subsidence
Most suitable position for subsidence to be estimated is above rib-side of working face, also perpendicular to seam gradient, and position of zero subsidence; method of estimation can be applied to seam gradients up to 20° and extraction of seam by single unit longwall face of constant width. (See also Instn Min Engrs -- Trans v 118 pt 11 Aug 1959 p 692-706 (discussion) 707)
New approach to estimation of mining subsidence
Colliery Guardian
Marr, J.E. (author)
Colliery Guardian ; 198
1959
8 pages
Article (Journal)
English
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