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Keywords: particle velocity
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Proceedings Papers

Paper presented at the 1st North American Rock Mechanics Symposium, June 1–3, 1994
Paper Number: ARMA-1994-0961
... source, rockmass modulus, tensile strength, connections at the rockbolt ends, and rockbolt pre-tension all play important roles in determining the dynamic stress levels in rockbolts. displacement observation drift particle velocity rockbolt coefficient Upstream Oil & Gas rockmass rock...
Proceedings Papers

Paper presented at the 1st North American Rock Mechanics Symposium, June 1–3, 1994
Paper Number: ARMA-1994-1033
... ? 3.5. This energy release is applied to a model of damage criterion for propagation of high-amplitude compressive stress waves through the mine workings. Using a particle velocity damage criterion of 0.30 m/s as needed to induce tensile cracking at free surfaces in coal, the area of damage from a M L...

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