Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Mine bolts, provided minimum anchor of 3 to 5 tons can be maintained, offer best and most economical means of support where spans are kept to widths commensurate with strength of rock; natural forces at work, support job, bolt anchorage, formula for minimum anchorage strength, bolt placement, how bolts hold rock, bolt capacity, anchor strength, types of bolts and their characteristics, torque-tension relationship.
Mine bolts, provided minimum anchor of 3 to 5 tons can be maintained, offer best and most economical means of support where spans are kept to widths commensurate with strength of rock; natural forces at work, support job, bolt anchorage, formula for minimum anchorage strength, bolt placement, how bolts hold rock, bolt capacity, anchor strength, types of bolts and their characteristics, torque-tension relationship.
Roof control and mine bolts
Coal Age
Allen, C.W. (Autor:in)
Coal Age ; 68
1963
6 pages
Aufsatz (Zeitschrift)
Englisch
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Anchorage testing of mine-roof bolts -- 1: Slotted-type bolts
| Engineering Index Backfile | 1954
Experimental types of roof bolts in Sadon mine
| Engineering Index Backfile | 1964
Principles of reinforcing bedded mine roof with bolts
| Engineering Index Backfile | 1956
Anchorage testing of mine-roof bolts. Expansion-type, 5/8-in. Bolts
| Engineering Index Backfile | 1957
Anchorage testing of mine-roof bolts 2. Expansion-type, 3/4-inch bolts
| Engineering Index Backfile | 1956