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seismic effects rock crushers
Frontiers Editorial: Physics and Seismicity of Rocks
Understanding the physical mechanisms of rock and exploring the characteristics of seismicity have attracted worldwide attention in solid earth geophysics. Due to the In this paper it systematically reviews the literature on the seismic dynamic response of anchored rock slope. The dynamic characteristics, dynamic stability, and 地震作用下锚固岩质边坡动力响应研究进展与展望 Earth
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A novel seismic topographic effect prediction method based
Topography has a great effect on ground motions, and may aggravate seismic hazards. The quantification of topographic effects is vital for hazard prevention in When the maximum stress of seismic load is 30 MPa, the maximum plastic internal variable is less than 0.02, suggesting that seismic load with a small maximum stress cannot cause severe damage to the Frontiers The influences of seismic load on
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Challenges in seismic rock physics Oxford Academic
Research in seismic rock physics is primarily concerned with establishing the quantitative relationship between geophysical measurements and subsurface rock The rockfall velocity, duration, seismic frequency, Husid plot, Arias intensity, and spectrogram of the seismic signals were compared. We found that friction Frontiers A Numerical Investigation of the Characteristics of Seismic
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Frontiers Earthquake Dynamic Failure Mechanism
Before the seismic acceleration reaches the maximum, the dangerous rock blocks on the two main controlling structures collapse and get destroyed. 25 s after the earthquake, the failure mode of the 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 Comparison of seismic effects during deep tunnel excavation
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Seismic Parameters and Their Physical Meaning SpringerLink
Seismic Deborah Number De s = (4μΔVΣE)/(Σ M o) 2. Seismic Schmidt Number Sc sd = (4μ 2 ΔVΔt(t)ΣE)/(ρ(X) 2 (ΣM o) 2. These four last formulas are from Mendecki . The parameter L in seismic diffusion is the length of a cube and ρ, t and X in the seismic Schmidt number formula is the rock mass density average time and average Seismic velocities and elastic moduli of rocks are known to vary significantly with applied stress, which indicates that these materials exhibit nonlinear elasticity. Monochromatic waves in nonlinear elastic Evidence of Nonlinear Seismic Effects in the Earth
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Sustainability Free Full-Text Longitudinal
The longitudinal direction of shield tunnels is prone to seismic damage due to excessive deformation under seismic action, especially in nonuniform stratum. In this paper, the longitudinal dynamic Earthquakes are a major external factor that induce landslides. In order to systematically study the dynamic effects and failure mechanism of anti-dip bedding rock slopes (the slope trend is the same as the joint trend, while the slope dip direction is opposite to the joint dip direction) under seismic action (as well as the spatial effects of Applied Sciences Free Full-Text Dynamic Analysis of the
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The Mechanical Properties of Granite under Ultrasonic Vibration
The new technique of using ultrasonic vibration to break hard rock is still in the experimental stage, but it has significant potential for improving the efficiency of hard rock crushing. We have analyzed the mechanical properties of granite under ultrasonic vibration and the characteristics of the damage produced. This was achieved by using an The seismic effects of blasting for roof falling are generally similar or higher than the effects of destress blasting (Fig. 4c). The average seismic effect of blasting for roof falling equals approximately 6.3, which means an excellent result, while for destress blasting it equals approximately 2.9, which means a very good result.A COMPARISON OF THE SEISMIC EFFECTS OF DIFFERENT
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(PDF) Exploring the Relation between Seismic Coefficient and Rock
Exploring the Relation between Seismic Coefficient and Rock Properties Through Field Measurements and Empirical Model for Evaluating the Effect of Blast-Induced Ground Vibration in Open- Pit MinesChina is located at the intersection of the Pacific Rim and Eurasian seismic belts. The compression and tension between plates have caused the development of fault zones. High frequency, wide distribution, and strong activity have become the main characteristics of China’s seismic activity. A landslide in Yushu area of Qinghai Province, Shaking table test study of accumulation layer landslide
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Rock Acoustics of Diagenesis and Cementation SpringerLink
We simulate the effects of diagenesis, cementation and compaction on the elastic properties of shales and sandstones with four different petro-elastic theories and a basin-evolution model, based on constant heating and sedimentation rates. We consider shales composed of clay minerals, mainly smectite and illite, depending on the burial Shear failure of bedding slopes along weak zones is the main failure mechanism of the Layue landslide. To investigate the seismic dynamic response and destabilization failure mode of rock slopes with laminated fracture structures, a two-dimensional shaking table test with different ground motion inputs was performed, taking Analysis of the seismic dynamic response and failure mode
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Seismic Performance Assessment of Velocity Pulse-Like
Rock engineering structures, involving underground mines, traffic tunnels and storage tanks, are likely to be encountered seismic ground motions during their service lives (Huo et al. 2005; Alielahi and Adampira 2016; Fan et al. 2019).Strong ground motion as an important external load, especially near-field large velocity pulse has been recognized The equivalent seismic forces for the Chi-Chi Earthquake on the near-field boundary are calculated based on the exact free-field response. The effect of water-filled valleys on the seismic response of the half-space is a problem not well treated previously, which is considered through the soil-liquid interface in this paper.On the seismic response of deep-seated rock slope
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Sustainability Free Full-Text Seismic Dynamic Response
To explore the effect of tunnel seismic performance under different surrounding rock parameters, the elastic modulus, internal friction angle, Poisson’s ratio, and bond of the surrounding rock are classified into five categories, and 27 sets of experiments were established using a homogeneous design approach.Much of the earlier work on dynamic rock properties was focused on scenarios characterized by high loading rates (e.g., Regime III), such as in the International Society for Rock Mechanics and Rock Engineering (ISRM) suggested methods contributed by Zhou et al. ().In addition, although it is known that the loading rate that represents Estimation of the Mechanical Properties of Igneous Rocks in
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Seismic Response of Rock Joints and Jointed Rock Mass
account of either the time history of individual events or the effects of repetitive seismic events. The CNWRA conducted a groundwater pressure monitoring program at the Lucky Friday Mine, Idaho, in sections of three fracture zones beneath the water table over a 2-yr period to study seismic effect on groundwater hydrology.The use of floating tunnels and underground tunnels is currently seen as an alternative solution for transportation problems in large cities. Both floating and underground tunnels require safe designs that must include seismic effects. In recent decades, the seismic amplifications on canyons, valleys, and underground tunnels have Seismic Response of Underground and Floating Tunnels
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Seismic response and deformation mechanism of near-fault
In response to the seismic incompatible deformation effect, a new mechanical model was proposed by Myasnikov, Guzev and Zhou et al. [14, 26, 45] to study the zonal disintegration mechanism of cross-anisotropic rock masses. Following this, yield was introduced to derive the JRC–JCS nonlinear model to quantitatively analyze the 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 Comparison of seismic effects during deep tunnel excavation
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Earthquake effects on civil engineering structures and
Earthquakes are natural phenomena which cannot be controlled, but their effects can be minimised. This study proposes a state-of-the-art review of the main effects of earthquakes on civil engineering structures and provides possible mitigation solutions to reduce seismic vulnerability. The main aspects reviewed include the liquefaction in dams
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