Study on the shear-slip process and characteristics of fracture in shale

Zhao, Chengxing; Liu, Jianfeng; Lyu, Cheng; Lin, Hao

doi:10.1016/j.enggeo.2023.107097

Cited by 27 publications

(5 citation statements)

References 75 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, its mechanism of generation is still unclear. Figure 5 (Zhao et al, 2023) shows that the Aomori earthquake of magnitude 8 occurred on January 29, 1763, and induced a deformation wave propagating at 25.2 km/year (low speed), which triggered the Haiyuan earthquake of magnitude 8.5 in 1920 and the Gulang earthquake of magnitude 8 in 1927 in the Chinese Mainland. In addition, there was a triggering relationship between the Aomori earthquake in 1763 and the Pinglu earthquake in the Chinese Mainland in 1815, where the deformation wave velocity was 62.1 km/year (medium speed).…”

Section: Quasi-static Models For Earthquake Triggermentioning

confidence: 99%

“…Usually, the characteristics of slow waves are determined by indirect measurements of changes in the geophysical field, that is, by measurement of significant spatio‐temporal changes in the geophysical field. Research has shown that the directional migration of earthquake focuses is a common phenomenon in nature, and its presence has been observed in Central Asia, the Pamir region, the Hindu Kush region (Kuz'min, 2012; Malamud & Nikolaevsky, 1985, 1989), the Baikal region of Siberia (Levina & Ruzhich, 2015; Sherman & Gorbunova, 2008a), and China (Wang & Zhang, 2004; Wang et al, 1990; Zhao et al, 2023). Wang and Zhang (2004) demonstrated the propagation path of slow deformation waves originating from the Himalayan arc belt (Figure 4).…”

Section: Quasi‐static Models For Earthquake Triggermentioning

confidence: 99%

“…For the detailed study of the shear–slip process and characteristics of fault, triaxial shear tests driven by displacement were conducted by Zhao et al (2023) on shale samples with prefabricated sawcut and natural fractures, from which it was shown that four stages can present the shear–slip process of fractures. More severe plastic failure in the shear–slip process would occur with the increase of the confining pressure and more “stress drop” would take place with the increase of roughness.…”

Section: Dynamic Models For Earthquake Triggermentioning

confidence: 99%

See 2 more Smart Citations

Dynamically triggered seismicity on a tectonic scale: A review

Qi,

Wang,

Kocharyan

et al. 2023

Deep Underground Science and Engineering

View full text Add to dashboard Cite

Earthquakes triggered by dynamic disturbances have been confirmed by numerous observations and experiments. In the past several decades, earthquake triggering has attracted increasing attention of scholars in relation to exploring the mechanism of earthquake triggering, earthquake prediction, and the desire to use the mechanism of earthquake triggering to reduce, prevent, or trigger earthquakes. Natural earthquakes and large‐scale explosions are the most common sources of dynamic disturbances that trigger earthquakes. In the past several decades, some models have been developed, including static, dynamic, quasi‐static, and other models. Some reviews have been published, but explosion‐triggered seismicity was not included. In recent years, some new results on earthquake triggering have emerged. Therefore, this paper presents a new review to reflect the new results and include the content of explosion‐triggered earthquakes for the reference of scholars in this area. Instead of a complete review of the relevant literature, this paper primarily focuses on the main aspects of dynamic earthquake triggering on a tectonic scale and makes some suggestions on issues that need to be resolved in this area in the future.

show abstract

Section: Quasi-static Models For Earthquake Triggermentioning

confidence: 99%

Section: Quasi‐static Models For Earthquake Triggermentioning

confidence: 99%

Section: Dynamic Models For Earthquake Triggermentioning

confidence: 99%

See 1 more Smart Citation

Dynamically triggered seismicity on a tectonic scale: A review

Qi,

Wang,

Kocharyan

et al. 2023

Deep Underground Science and Engineering

View full text Add to dashboard Cite

show abstract

“…The similar materials research method has been widely used in various engineering fields, such as rock mechanics, geotechnics, and concrete materials. In recent decades, there have been various research reports on materials similar to coal rock, mainly focusing on the mechanical properties of the materials, such as their compressive strength and deformation properties [22][23][24]. However, there have been relatively few studies on similar materials in terms of deformation properties and spatial characteristics of coal rocks, which is mainly due to the difficulty in modelling and reproducing the spatial distribution and variability caused by the inhomogeneity of coal rocks.…”

Section: Introductionmentioning

confidence: 99%

Feasibility Study of Material Deformation and Similarity of Spatial Characteristics of Standard Coal Rocks

Liu,

Wang,

Zan

et al. 2024

Processes

View full text Add to dashboard Cite

The comparison between similar materials and original coal rock is the basis for similar simulation experiments in coal mines. The differences in mechanical properties, acoustic characteristics, and damage laws between similar materials and the original coal rock are of great significance for similar simulation research, to reveal objective laws. First, materials similar to coal rock with similar theoretical ratios were taken as the object of research, and the sand–cement ratio, the carbon paste ratio, and the water content were determined by multivariate linear regression to accurately match the ratios. Second, by using acoustic emission and digital scattering technology to explore the acoustic law, deformation characteristics, and spatial feature similarities of the materials similar to coal rock, the acoustic emission evolution law of the original rock was found to be the same as that of the similar materials. Digital scattering was able to describe the localization of strain in the similar materials, and the correlation between the overall deformation and the local deformation was explored. This indicates that materials similar to coal rock can effectively simulate the deformation of actual coal rocks. Lastly, these materials were found to allow effectively simulating the deformation characteristics and spatial properties of actual coal rock, which provides an important experimental means and method for similar research in the field of coal rock engineering.

show abstract

“…Recycled concrete refers to the use of waste concrete as raw material, which is screened and crushed to produce coarse aggregates suitable for preparing fresh concrete, replacing natural aggregates in concrete. The preparation of recycled concrete is a good way to reuse waste concrete [4][5][6][7][8].Making recycled aggregates from dismantled construction waste for the preparation of recycled concrete not only solves the pollution problem of construction waste, but also saves natural aggregates, and protects resources and the environment, which is of great significance for achieving sustainable development [9][10][11][12].The implementation of "Recycled coarse aggregates for concrete" (GB/T 25177-2010) [13] and "Recycled fine aggregates for concrete and mortar" (GB/T25176-2010) [14] standardizes the preparation of recycled concrete aggregates [15][16][17].Many scholars have conducted extensive research Appl. Sci.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Preparation and Characteristics of Concrete Modified by Construction Waste

Zhang,

Zhu,

Zhou

et al. 2024

Applied Sciences

View full text Add to dashboard Cite

With the advancement of urbanization construction, the proportion of construction waste to the total urban waste continues to increase, especially waste concrete. The treatment and reuse of waste concrete is a major trend that poses enormous pressure on environmental protection. This article focuses on the problems in the preparation of recycled aggregates from waste concrete, which has important practical value. This article presents a new type of recycled concrete prepared through surface modification of recycled coarse aggregate and design experiments to change the replacement rate of coarse aggregate. The physical properties of recycled coarse aggregate, workability of fresh concrete, and mechanical properties of recycled concrete are analyzed. The research results indicate the following: (1) Through surface modification, recycled concrete can improve the workability of fresh concrete at a fixed water cement ratio, which can meet the requirements of mixing, transportation, and pouring of fresh concrete. (2) By modifying the surface of recycled aggregates, the strong water absorption performance of recycled aggregates caused by old mortar and surface defects has been reduced. And the modification effect of recycled aggregate improves the hydration process of recycled concrete, making the surface structure dense and further enhancing the strength of recycled concrete. (3) The compressive strength of recycled concrete specifications from construction waste shows a decreasing trend with the increase in coat aggregate replacement rate. The final ratio is as follows: modular dose of 12%, modification time of 90 min, and 20% recycled aggregate content.

show abstract

Study on the shear-slip process and characteristics of fracture in shale

Cited by 27 publications

References 75 publications

Dynamically triggered seismicity on a tectonic scale: A review

Dynamically triggered seismicity on a tectonic scale: A review

Feasibility Study of Material Deformation and Similarity of Spatial Characteristics of Standard Coal Rocks

Experimental Study on Preparation and Characteristics of Concrete Modified by Construction Waste

Contact Info

Product

Resources

About