Results 11 to 20 of about 53,996 (266)
Applied Sciences, 2022 With the large-scale construction of urban traffic tunnels in China, it has become common to underpass existing buildings and structures such as sewage box culverts and pipelines using the drilling-blasting method.
Jiancong Xu, Huihao Xue, Guorong Rui
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Method of defining rock damage variable on the basis of wave impedance
Energy Science & Engineering, 2023 A method of determining rock damage variable from wave impedance, which is suitable for the study of dynamics, is presented. The determined variable provides a more reasonable quantitative description of the degree of rock damage. First, the Taylor model
Weiyu Li +3 more
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Machines, 2022 Conical picks are applied to rock breaking, and the cutting parameters greatly influence cutting performance and rock damage. A conical pick rock-cutting numerical simulation model and software to provide a quantitative analysis of rock damage are ...
Zhiwen Wang +4 more
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A coupled elastoplastic damage model for brittle rocks: elastoplastic damage model for brittle rocks
Frattura ed Integrità Strutturale, 2020 Brittle rock contains an important plastic deformation, which causes microcracks when coupled with stress-induced damage. A new coupled elastoplastic damage model is established in order to discuss the damage behaviors found in brittle rock, based on theoretical analysis and experiments.
Li, Zheng +3 more
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Energies, 2020 Investigation of the damage characteristics of rock material under the combined effect of cyclic load and impact load is extremely crucial for many mining engineering applications.
Yanlong Chen +6 more
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A new shear creep damage model for rock masses after considering initial damage.
PLoS ONE, 2023 For a long time, one of the important safety problems in open-pit mines is the stability of a large number of high slopes with gently inclined soft interlayer. Rock masses formed after long geological processes generally have some initial damage.
Bin Hu +6 more
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Damage law and mechanism of coal-rock joint structure induced by liquid nitrogen at low temperature
Scientific Reports, 2022 The width and degree of connectivity of coal-rock joints directly affect the seepage capacity of flow energy such as gas. To study the damage law and mechanism of the coal-rock joint structure under the action of liquid nitrogen, two methods of liquid ...
Hewan Li +4 more
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Rupture by damage accumulation in rocks [PDF]
International Journal of Fracture, 2006 The deformation of rocks is associated with microcracks nucleation and propagation, i.e. damage. The accumulation of damage and its spatial localization lead to the creation of a macroscale discontinuity, so-called "fault" in geological terms, and to the failure of the material, i.e.
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Brittle creep, damage, and time to failure in rocks [PDF]
Journal of Geophysical Research: Solid Earth, 2006 We propose a numerical model based on static fatigue laws in order to model the time‐dependent damage and deformation of rocks under creep. An empirical relation between time to failure and applied stress is used to simulate the behavior of each element of our finite element model. We review available data on creep experiments in order to study how the
Amitrano, David, Helmstetter, A.
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Rock damage evolution model of pulsating fracturing based on energy evolution theory
Energy Science & Engineering, 2020 Pulsating fracturing, as a new technology for unconventional oil and gas exploration, enables to enhance stimulated reservoir volume (SRV) effectively, which further helps to improve well performance.
Yuwei Li +7 more
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