The Dynamic Deformation Properties of Rock Materials …
The main factors of seismic load for the deformation properties of rock are determined. 1 Introduction. Rock is main oriented object encountered in important …
Seismic Effects Rock Crushers
Whales stop singing and rock lobsters lose their balance: how seismic …
Seismic surveys and marine life. The ability to fully examine the effects of seismic surveys in mammals is limited, because invasive methods are not logistically possible or ethically acceptable. But there is a long history of research on whales and dolphins, given their reliance on sound to communicate, find food and navigate.
Study on Seismic Response and Damping Measures of Surrounding Rock …
The effects of two methods, grouting reinforcement and vinyl damping material, on the seismic effect of the tunnel were analyzed, and the study showed that both methods had good effects. However, with the increase in tunnel reinforcement area and buffer layer thickness, the seismic damping effect tends to weaken.
Investigation of Geomorphic and Seismic Effects on the …
We present an integrated approach to investigate the seismically triggered Madison Canyon landslide (volume = 20 Mm3), which killed 26 people in Montana, USA, in 1959. We created engineering geomorphological maps and conducted field surveys, long-range terrestrial digital photogrammetry, and preliminary 2D numerical modelling with …
Stone Crushers: A Technical Review on Significant Part of
Crushers are one of the essential quarrying machines used in foresaid industries which are generally used to reduce the size of large size rocks into small stones, sand dust and gravels. ... Continuous maintenance of demand-supply chain of these rock materials ores and minerals is thus necessary for improvement of the standard of living …
Frontiers | Effects of rock types and crushing mechanism on …
This study aims to investigate the effect of rock types, i.e., granite, conglomerate rock, limestone, and crushing mechanism, i.e., Vertical Shaft Impact (VSI) crusher, …
Seismic rocking effects on a mine tower under induced and …
It is concluded that in the analysed case of the 64 m mining tower, the seismic response, including the rocking ground motion effects, may increase up to 31% (for …
Comparison of seismic effects during deep tunnel excavation …
The rapid release of strain energy is an important phenomenon leading to seismic events or rock failures during the excavation of deep rock. Through theoretical analysis of strain energy adjustment during blasting and mechanical excavation, and the interpretation of measured seismicity in the Jin-Ping II Hydropower Station in China, this …
Should I Choose an Impact Rock Crusher or Cone Crusher?
Compression crushers include jaw crushers, cone crushers, gyratory crushers and roll crushers. Impact crushers include vertical shaft impactors or horizontal shaft impactors. Compression crushers require much less maintenance; high impact crushers undergo more wear and tear due to the material colliding within the crusher.
Impact of seismic design on tunnels in rock – Case histories
The tunnel industry has considered that tunnels, especially tunnels in rock, are naturally resistant to earthquake action, including faulting, shaking, deflection and ground failure. ... No changes to the design resulted from the consideration of seismic effects. Fig. 6 shows the capacity of the precast segmental lining as illustrated by its ...
Seismic Effects of Viscoelastic Pore Fill on Double-Porosity …
Seismic Effects of Viscoelastic Pore Fill on Double-Porosity Rocks. Authors: Stanislav Glubokovskikh ... The model predicts both, squirt-flow and viscous shear relaxation, and substantial increase in the rock rigidity with increasing frequency (or decreasing temperature) for rocks saturated with viscoelastic substances. The results …
Experimental study of seismic oscillation effect on rock …
The studied sample (2) packed in a thin-walled gold jacket (3) was placed into a high pressure vessel (1). Water coming from the press (2 Fig. 1) via the inlet (12) to the bottom chamber (7) acted on the piston (5), with the obturator (4) producing axial stress (σ x).Confining pressure (σ y =σ z) is produced by water coming from the presses (3, 4 Fig. …
Mechanism of Crushing of Rocks under Dynamic Loading
In the mining and quarrying operation, rock crushing process consumes a large amount of energy. Therefore, it is necessary to generate a better understanding of the …
Effects of Earth Rock Dam Heterogeneity on Seismic …
earth–rock dams by the seismic wave method. 2. Establishment and Characteristic Analysis of the Soil–Rock Mixture Model 2.1. Soil–Rock Mixture Modeling Method Earth–rock dams are composed of a mixture of soil and rock, and the distribution of soil and rock inside the dam is discrete and random. Therefore, to accurately reflect the
Optimization of key components of impact crusher based on …
Abstract. "Rock bed" mechanism and its formation were discussed in this article. Inspired by the bionic wear-resistant structure, the shape and parameters of an …
Effects of a controlling geological discontinuity on the seismic
The mechanism for the influence of near-fault ground motion on seismic issues for underground rock caverns has seldom been addressed, especially for caverns controlled by large geological discontinuities. In this paper, a nonlinear joint model was used to simulate the effects of unfavorable geological discontinuities under seismic …
Laboratory measurements of Vp and Vs in a porosity …
High pressure Vp and Vs measurements of thermally cracked rock. • Microcracks lower measured Vp, Vs, Vp/Vs and Poasson's ratio of rocks. • Quantitative evaluation of the effect of microcracks on elastic properties. • New constraints for petrological interpretation on the seismic velocity structure of IBM arc.
Depth Effect of Rock-Breaking Seismic Source by Drilling …
@article{Guo2023DepthEO, title={Depth Effect of Rock-Breaking Seismic Source by Drilling Jumbo in Subsea Tunnel with the Drill and Blast Method and Its Application Prospects}, author={Weidong Guo and Zhenyan Tian and Shucai Li and Shao-shuai Shi and Wang Xin and Xiansen Li}, journal={Journal of Marine Environmental Engineering}, …
Numerical simulation study on rock-breaking process and …
A three-dimensional numerical model of rock with zero-thickness cohesive elements was established to accurately investigate the mechanism of rock crushing, …
Seismic performance and failure mechanism of
We also explored the effect of rock layer thickness on the seismic response of slopes by considering weak rock layer thicknesses of 0.5 m, 1 m, 1.5 m, and 2 m (termed IR-0.5 m, IR-1 m, IR-1.5 m, and IR-2 m, respectively) on a real-world scale.
Crushers
All rock crushers can be classified as falling into two main groups. Compressive crushers that press the material until it breaks, and impact crushers using the principle of quick impacts to crush the material. ... An additional crushing effect occurs between the compressed particles, resulting in less wear of the liners. The gyratory crushers ...
Seismic signatures of rock pore structure | Applied …
Rock pore structure is one of the important parameters in controlling both seismic wave velocity and permeability in sandstones and carbonate rocks. For a given porosity of two similar rocks with different pore structures, their acoustic wave speeds can differ 2 km/s, and permeability can span nearly six orders of magnitude from 0.01 mD to 20 D in both …
Seismic Effects of Blasting in Rock
The quarry blast source models include the finite size of the source, the effect of ripple firing (time delays and spatial separation), the effect of net vertical and …
Seismic Effects of Blasting in Rock
The results of theoretical and experimental investigations of seismic waves depending on natural and technological factors are discussed, with methods for
Seismic Effects of Blasting in Rock
Download Citation | Seismic Effects of Blasting in Rock | The results of theoretical and experimental investigations of seismic waves depending on natural and technological factors are discussed ...
Seismic behaviour of tunnels: From experiments to analysis
Seismic behaviour of tunnels: From experiments to analysis is a comprehensive review of the state-of-the-art research on the seismic performance of underground structures. The article covers various aspects of experimental, analytical and numerical methods for assessing the dynamic response of tunnels in different soil and …
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Seismic performance and failure mechanism of
The effect of rock strength on the seismic stability of slopes can be found in the literature (e.g., Lv et al., 2017; Massey et al., 2017). Download: Download high-res image (385KB) Download: Download full-size image; Fig. 17. Damage indicator of slope with various weak rock layer stiffnesses at different seismic intensities.
Seismic Effects of Blasting in Rock | Semantic Scholar
The results of theoretical and experimental investigations of seismic waves depending on natural and technological factors are discussed, with methods for engineering calculations of industrial blast parameters. ... Seismic Effects of Blasting in Rock @inproceedings{Kuzmenko1993SeismicEO, title={Seismic Effects of Blasting in …
How to Reduce Noise and Dust Emissions from Your Jaw …
Causes and Effects of Noise from Jaw Crushers. Jaw crushers generate significant noise levels due to the nature of their operations, including impact and grinding noises produced during the crushing process. The "crusher exhaust sound" and the "rock crusher sound" are common terminologies used to describe these noises.
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