Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Needed: better roof support at mine intersections
Study of junction-support problem revealed that exposed roof at intersections rarely exceeds 15% of total exposed, but 30% of fatalities occur at these points; possible solutions include use of longer bolts than normally used at approaches to intersection; use of modified yielding arches; use of sag bolts for predicting roof collapse.
Needed: better roof support at mine intersections
Study of junction-support problem revealed that exposed roof at intersections rarely exceeds 15% of total exposed, but 30% of fatalities occur at these points; possible solutions include use of longer bolts than normally used at approaches to intersection; use of modified yielding arches; use of sag bolts for predicting roof collapse.
Needed: better roof support at mine intersections
Coal Age
Stahl, R.W. (Autor:in)
Coal Age ; 67
1962
Aufsatz (Zeitschrift)
Englisch
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