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A platform for research: civil engineering, architecture and urbanism
Development and Testing of Explosive-Anchored Rockbolt
Explosive-anchored rockbolt developed by Bureau of Mines and tested in nine mines produces anchorage superior in holding power to anchors of wedge or expansion-shell types in medium hard or soft and spongy ground; it is equal to any rockbolt anchor presently being used in hard rock; tests obtained anchorages in excess of 17,000 lb in soft formations with bolt head movements averaging 0.013 in.; best charge was from 10 to 14 in. long, producing three beads. (see also similar unsigned article in South African Min and Eng J v 75 n 3733 Aug 21 1964 p 605, 612)
Development and Testing of Explosive-Anchored Rockbolt
Explosive-anchored rockbolt developed by Bureau of Mines and tested in nine mines produces anchorage superior in holding power to anchors of wedge or expansion-shell types in medium hard or soft and spongy ground; it is equal to any rockbolt anchor presently being used in hard rock; tests obtained anchorages in excess of 17,000 lb in soft formations with bolt head movements averaging 0.013 in.; best charge was from 10 to 14 in. long, producing three beads. (see also similar unsigned article in South African Min and Eng J v 75 n 3733 Aug 21 1964 p 605, 612)
Development and Testing of Explosive-Anchored Rockbolt
Min Conress J
Parsons, E.W. (author)
1964
5 pages
Article (Journal)
English
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Development and Testing of Explosive-Anchored Rockbolt
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