No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
Earth–rock dams are typical soil–rock mixtures with high heterogeneity. Mastering the effect of dam heterogeneity on seismic wavefields is the premise of accurately detecting hidden risks in dams. In this paper, based on the soil–rock mixture characteristics of actual dams, a soil–rock mixture model that can reflect the heterogeneity of dams is established through …
This paper describes the application of seismic techniques to two problems in rock mechanics. The seismic location of failure foci is discussed and some results of the location, to within 5 m, of ...
Figures 7 and 8 show respectively the maximum axial force on the lining for the elastic and plastic analysis when both horizontal and vertical seismic coefficients are applied.
Multi-domain coupling analysis can reveal the seismic response characteristics of slopes more comprehensively and provide a reference for the seismic design of rock slopes. Flowchart for the multi ...
In complex high in-situ stress conditions, how to achieve the ideal rock blasting effect through effective methods is often a difficult point of blasting operations. This paper …
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
The four different seismic loading has been considered to observe the effect of light, moderate, strong, and major earthquake having magnitude of 4.6M, 5.6M, 6.6M, and 7.6M respectively on rock slope.
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.
The seismic responses can be examined when the tunnel is subjected to seismic waves with different intensities, durations, frequencies as well as incidence directions (Huang et al., 2017).Other factors such as surrounding rock properties, lining stiffness, transverse section shape and tunnel depth were considered (Chen et al., 2012, Bao et al., 2017).
The seismic response of the surrounding rock in crossing-fault is a scientific problem involving many domains (Song et al. 2021; Yan et al. 2020).Research on the dynamic response of crossing-fault tunnel surrounding rock based on the time domain and frequency domain is beneficial for revealing the seismic response characteristics of surrounding rock …
If the ore feed to any gyratory or jaw crusher consisted entirely of large cubes or spheres of a size that would just barely enter the crushing chamber, the crusher could not be expected to produce anything like its normal rated capacity because the upper part of the crusher could not shatter the large pieces enough to keep the rest of the crushing chamber busy.
Barton (1984) describes the effect of rock mass deformation on tunnel in seismic region and defines the role of joints and water on tunnel stability. Figueiredo and Assis (2018) describe the ...
This shaking table test suggests that the shearing effects of seismic excitations can significantly affect the weak interlayers at the lower part of the slope and promote a sliding tendency along the strike of the weak interlayers. ... Under seismic excitation, the rock mass on the upper part of the sliding surface may experience a higher ...
Download Citation | Effect of frequency of seismic wave on acceleration response of rock slopes | Slope dynamic response to an earthquake is a product of interaction between seismic waves of ...
On the other hand, geological structures can have a dampening effect on seismic waves. Certain rock formations, such as sedimentary basins or thick layers of unconsolidated sediment, can trap and scatter seismic waves, reducing their amplitude and energy. This phenomenon, known as seismic attenuation, can mitigate the effects of earthquakes by ...
Rock physics studies the relationship between physical and elastic properties of rocks and is the basis of quantitative seismic interpretation. It has arguably given exploration geophysicists a solid quantitative basis to their interpretation of seismic data. It can be tackled at different scales of investigation by people with various backgrounds — from geophysicists to …
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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 paper describes the …
The organic content of petroleum source‐rock layers can be determined from seismic data with a suitable AVO technique. Since the source rock has a layered structure, the best forward model is a transversely isotropic layer between two isotropic half‐spaces, parameterized by the layer thickness and the amount of organic material. This limited number of parameters is essential …
Useful work is manifested in form of crushing and milling of the rock material in the limited zone around explosive matter and is defined as brisant effect of explosion. Useless work is a...
Though previous studies have shown that the presence of water strongly influences wave responses of rock fractures, water effects on wave behaviours across clay-rich rock fractures have been ambiguous until now. In the present study, we conducted considerable ultrasonic measurements on single rock fractures filled with kaolinite-dominant gouges at …
The Luobusha ophiolite is well documented to have formed originally at a mid-ocean ridge setting and affected later on by boninitic magmatism at a suprasubduction zone (SSZ) setting [Yang et al., 2008; Zhou et al., 2005].The whole rock Sm-Nd isochron age of 177 ± 33 Ma for the mid-ocean ridge basalt (MORB)-type mantle and gabbros [Zhou et al., 2002], …
AbstractA novel stability chart solution is presented to help the rapid assessment of the seismic stability of three-dimensional rock slopes subjected to the Hoek–Brown criterion. The present metho... Search term(s) Search. Advanced search Citation ... The proposed method can well capture the effect of the seismic dynamic characteristics on F ...
The critical coupling effects of proppant crushing and surface roughness degradation on shear behavior of stimulated fractures, however, is less understood. ... AE events resemble …
Here, we explore effects of a seismic velocity contrast between unstable and surrounding stable material by varying the elastic modulus of underlying bedrock between 10 and 90 GPa, while retaining a constant value of 10 GPa for the sliding block of the 425 m high slope. This strategy was chosen to explore the role of velocity contrasts while ...
This study investigated the effect of rock strength parameters on vibration velocity. In this study, the blasting vibration monitored at a blasting site with different rock masses.
Abstract. The scattered seismic waves of fractured porous rock are strongly affected by the wave-induced fluid pressure diffusion effects between the compliant fractures and the stiffer embedding background. To include these poroelastic effects in seismic modeling, we develop a numerical scheme for discretely distributed large-scale fractures embedded in fluid …
Important results in the seismic effects of mine blasting have been obtained by the Sverdlovsk group of inves- tigators [7-11] who have developed a number of fundamentally new …
In this paper, we focus on three seismic anisotropy estimation problems: (1) Determining the relationships between shale rock properties and elastic stiffness coefficients, (2) Quantifying the effects of mineralogy, pores, and solid organic matters on the anisotropy parameter changes, (3) Enhancing the elastic stiffness estimation accuracy by applying …
The effect of weak intercalated layers on the seismic response of rock slopes is investigated. Dozens of rock slopes containing weak intercalated layers are modeled in FLAC.
