Results 191 to 200 of about 1,591 (253)

Numerical investigation on damage characteristics of surrounding rocks in the deep underground tunnel subjected to full-face smooth blasting. [PDF]

Sci Rep
Du H, Huang X, Wang H, Wan Y, Huang S, Li W.   +5 more
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Research on new ventilation technology for long tunnel construction based on air curtain dust suppression and dust diffusion law. [PDF]

Sci Rep
Gao Y, Chen X, Hao X, Zhang S, Zhu Z, Geng J.   +5 more
europepmc   +1 more source

The effect of different borehole spacing and detonation time difference on crack propagation in double-hole shaped charge blasting. [PDF]

PLoS One
Xu S, Wu B, Dou Z.
europepmc   +1 more source

Design and application study of the key technical parameters of dense drilling for pressure relief in coal mine roofs: a case study. [PDF]

Sci Rep
Ma J, Wang H, Li X, Dong G, Yuan Y.
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Numerical simulation of topographic propagation law of vibration wave in liquid carbon dioxide phase transition fracturing blasting. [PDF]

Sci Rep
Zeng Y, Li H, Xia X, Hu W, Liu X, Huang J, Zhu X.   +6 more
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Experimental and numerical study on dynamic crack propagation of shaped charge at different angles. [PDF]

Sci Rep
Luo H, Bian Y, Wang Z, Yuan Z.
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The deformation characteristics and the prefabricated crack pressure relief stability control of a small coal pillar roadway under stress superposition. [PDF]

Sci Rep
Cheng S, Ma Z, Li Y, Zhang X.
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Physical modelling of propagation characteristics of blasting stress waves in rock masses with parallel and X-shaped intersecting joints. [PDF]

Sci Rep
Deng Z, Wang S, Wei T, Deng Y, Ni J, Ye D.   +5 more
europepmc   +1 more source

Mechanical properties of rock cutting by disc cutters and feasibility analysis of mechanical mining in Jinchuan No. 3 Mine with hard rock. [PDF]

Sci Rep
Zhao J, Huang D, Zhu D.
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An investigation into blasting design for mining excavations

Mining Science and Technology, 1988
Abstract Blastability of rock is defined utilizing Bieniawski's rock mass classification with Hoek and Brown m and s values. A new method is introduced to determine optimum blasthole diameter, burden, spacing, stemming length, ratio of maximum burden to the bench height and relationship between the blastability, rock strength factor and specific ...
A. Afrouz, F.P. Hassani, R. Ucar
openaire   +1 more source