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Keywords: characteristic
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Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-106
... methane. Guo et al. (2015) developed a soundless cracking agent (SCA) fracturing evaluation method for shale gas play, which enabled a comprehensive refection of the characteristics of rock hardness, brittleness and natural fracture systems. Jin et. al (2015) proposed a new fracability index (FI...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-108
... Abstract Research on the fluid flow characteristics of fractal single fractures with different water pressure heads H , fracture widths e and fractal dimension D has been investigated, and a comprehensive index Fr coupling the three factors was proposed. The evolution of flow rate Q...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-109
... hammer equation elongation oscillogram resistance deformation displacement formula deep underground engineering experiment manchao constitutive relation characteristic state key laboratory Rock Mechanics for Natural Resources and Infrastructure Development Fontoura, Rocca & Pavón...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-112
...). upstream oil & gas deformation damage evolution characteristic plastic deformation accumulation loading specimen boundary borehole excavation reservoir characterization characteristic underground engineering rock mechanic elastic plasticity deformation reservoir geomechanics mpa...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-119
... characteristics in the region of ultimate loads up to the stage of sample destruction. The values of γ and K are obtained for coals of Donets basin and the related elastic moduli under the maximum loading of the samples up to 1.2 GPa. The surface fractal dimensions D f calculated from the neutron scattering...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-120
... Abstract The dynamic mechanical behaviour and characteristics of rocks have been investigated using different techniques in relation to evaluate the engineering structures by dynamic loads such as those resulting from the impact of missiles or meteorites. The authors have developed a new...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-121
... Abstract Many literatures concerned with AE quiet period have been reported in last decades. However, the mechanism of the AE quiet period remains to be revealed. In this paper, the AE characteristics of the quiet period were investigated based on the AE experiments of red sandstones under...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-129
... Abstract In order to figure out the damage and failure characteristics of Longmaxi shale in deformation and failure under loading, three cylindrical specimens were prepared to conduct realtime uniaxial tests. Micro-focus X-ray computed tomography (μ-CT) at different stress levels were used...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-130
.... it is significantly affected by the weak plane parallel to schistosity and its dip angle. More specifically, for the foliation angle β = 90°, the progressive failure process exhibits the characteristics of stable tension deterioration along weak plane. For β = 60° or 30°, the failure process is characterized by weak...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-132
... resources (Li et al., 2016, Ma & Xie, 2018). Shale gas reservoirs have the characteristics of ultra-low permeability and natural fracture development(Guo et al, 2015, Shan et al., 2017), so large-scale fracturing is required to form industrial productivity(Chen et al, 2013, Wang et al., 2014...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-257
... congresso brasileiro characteristic dispersion specimen compression strength anglogold ashanti confinement table 3 cylindrical specimen deviation gallery execution Rock Mechanics for Natural Resources and Infrastructure Development Fontoura, Rocca & Pavón Mendoza (Eds) © 2020 ISRM, ISBN 978...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-267
... reservoir geomechanics characteristic efficiency rock mechanic non-contact measuring system figure 3 metals & mining journal application figure construction stability cae stereo cameratm Rock Mechanics for Natural Resources and Infrastructure Development Fontoura, Rocca & Pavón Mendoza...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-269
... Abstract This study prepares two physical models to investigate the relationships between rock block stability and mircotremor characteristics. Eight trapezoid blocks are poured with main parts of model with various slope and connecting conditions. The experimental results indicate...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-273
... bedding plane characteristic tensor orientation deformation anisotropy rock mechanic axial compression mechanics reservoir characterization mudstone isotropic consolidation international journal isotropic elasticity Mechanics of hard and weak rocks 264_14094.indd 2267 24/08/19 8:51 PM Rock...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-281
... foundation reservoir characterization injector reinforcement composition fraction geocomposite deformation binder mortar deformation modulus characteristic cement mortar steel injector Rock Mechanics for Natural Resources and Infrastructure Development Fontoura, Rocca & Pavón Mendoza (Eds) ©...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-284
... Abstract Deep rock mass is in a complex geological environment and true triaxial stress field. The failure process of deep rock mass can be well simulated by TTC test. In this article, the strength and deformation characteristics, failure characteristics and AE characteristics of Beishan...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-289
... Abstract This paper offered an experimental method to analyze the stage traits and energy release mechanism from damage to fracture of the unloading coal-rock masses under uniaxial compressive loading. The research results indicated that the consistency of the physical characteristics...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-290
... Abstract To reveal the failure conditions and mechanisms of deep hard rock, the deformation and failure characteristics of hard rocks under true triaxial compression are reviewed. For the constant σ 3 , there is a non-symmetrical variation on the failure strength which first increases...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-158
... information characteristic Rock Mechanics for Natural Resources and Infrastructure Development Fontoura, Rocca & Pavón Mendoza (Eds) © 2020 ISRM, ISBN 978-0-367-42284-4 Improving the quality and quantity of geotechnical core logging data K. Esmaieli Lassonde Institute of Mining, University of Toronto...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-163
... characteristics of rockfall in the underground mine during the monitoring. This paper also deals with the safety management by analyzing the detailed parameters of microseismic activities. The frequency, occurrence rate of microseismic activities, source location and magnitude of microseismic events are basic...

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