The Influence of Bedding Planes on Tensile Fracture Propagation in Shale and Tight Sandstone

Zhou, Wei; Shi, Guoxin; Wang, Jianbo; Liu, Jiantong; Xu, Ning; Liu, Pengyu

doi:10.1007/s00603-021-02742-2

Cited by 18 publications

(4 citation statements)

References 36 publications

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“…The slide body is mainly moderately weathered calcareous slate and silty slate, which is a rocky landslide, but the surface is made of Quaternary residual slope gravel soil, the main sliding direction is 55°, and the sliding surface is arc-shaped , the overall middle and rear part is steeper, and the front edge is gentler. Studies have shown that the landslide was formed due to the sliding deformation of the bedding slope, and small-scale sliding of the Quaternary gravel soil layer was found in the surrounding area, indicating that the landslide in the study area is not stable in the natural state [7][8].…”

Section: Stability Under Natural Conditionsmentioning

confidence: 90%

Numerical Simulation Analysis of Secondary Slip of Earthquake-Induced Landslide

Tang,

Liang,

Jiang

et al. 2023

Advances in Transdisciplinary Engineering

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The western region of China has a complex and diverse regional geological environment, which has formed a variety of geological disasters such as landslides and debris flows, accompanied by earthquakes. Taking a landslide in Banma County, a certain area Province as an example, this paper collects and surveys the local geological environment data and the basic characteristics of the landslide, and uses the three-dimensional finite difference software FLAC3D to simulate the stability of the landslide in the natural state and the possibility and danger of re-induction under the action of future earthquakes. The quantitative analysis shows that the landslide is in a basically stable state in the natural state. Under the seismic load of local VII. degree intensity, the slide body was revived along the boundary as a whole, the middle and upper parts were obviously deformed, and the failure deformation occurred again, and the sliding body had more obvious deformation damage and sensitivity relative to the surrounding bedrock.

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Section: Stability Under Natural Conditionsmentioning

confidence: 90%

Numerical Simulation Analysis of Secondary Slip of Earthquake-Induced Landslide

Tang,

Liang,

Jiang

et al. 2023

Advances in Transdisciplinary Engineering

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“…Fabric is most commonly observed as fossils, lithological bedding planes, and/or diagenetic veins in sedimentary rocks, and as crystal horizons, foliation structures, and dikes in igneous or metamorphic rocks. Rock fabric can impart anisotropy that could influence cracking rates and orientations (e.g., Nara and Kaneko, 2006;Zhou et al, 2022). Any visible fabric type, as well as the strike(s) and dip(s) (or trend(s) and plunge(s)) of each parallel or subparallel set should be noted in the crack sheet for each observation area.…”

Section: Fabricmentioning

confidence: 99%

Standardized field methods for fracture-focused surface processes research

Eppes

Aldred

Berberich

et al. 2022

Preprint

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Abstract. Rock fracturing comprises a key component of a broad array of Earth surface processes due to its direct control on rock strength as well as rock porosity and permeability. However, to date, there has been no standardization for the quantification of rock fractures in surface processes research. In this work, we make the case for standardization within fracture-focused research and review prior work to identify various key datasets and methodologies. We then present a suite of standardized methods that we propose as ‘baseline’ for fracture-based research in surfaces processes studies. These methods have been shown in preexisting work from structural geology, fracture mechanics, and surface processes disciplines to comprise best practices for the characterization for cracks, clasts, and outcrops. These practical, accessible and detailed methods can readily be employed across all fracture-focused weathering and geomorphology applications. The wide adoption of a baseline of data, all collected using the same methods, will enable comparison and compilation of data among studies globally, and ultimately will lead to a better understanding of the links and feedbacks between rock fracture and landscape evolution.

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“…Under the condition of constant stress velocity, the subcritical crack propagation was studied by the methods of double torsion test, Brazilian splitting, three-point bending test, slot-disk test, and single-edge notch bending test. It was found that the double torsion test was more suitable for the study of rock subcritical crack growth in the constant stress velocity test method [16,34,35]. erefore, the crack growth rate of salt rock under different temperatures and stress conditions was measured by the constant stress loading rate method.…”

Section: Introductionmentioning

confidence: 99%

Creep Fracture Characteristics and the Constitutive Model of Salt Rock under a Coupled Thermo-Mechanical Environment

Wang

Liang

Guangwu

et al. 2022

Mathematical Problems in Engineering

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The fracture extension characteristics of salt rocks under creep play an important role in the long-term safety and stability assessment of underground compressed air storage reservoirs. To study the fracture evolution characteristics of salt rock with time, the present study modified the Charles creep fracture intrinsic model and calibrated the A and n of the fracture extension coefficient parameters by creep fracture experiments with a constant stress rate loading method for salt rock under different temperature conditions. Finally, the modified Charles model was embedded into PFC (particle flow code) to simulate the fracture of salt rock numerically and the results were verified theoretically. The results show that (1) the fracture extension rate is related to the parameters A and n in addition to the stress intensity factor; (2) both n and A gradually decrease with the increase of temperature, and an decrease of n and A represents the decrease of fracture creep extension rate; and (3) the longer the initial fracture length of the specimen, the smaller the fracture time. The results of this study can provide theoretical guidance for evaluating the confinement of underground compressed air storage reservoirs.

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The Influence of Bedding Planes on Tensile Fracture Propagation in Shale and Tight Sandstone

Cited by 18 publications

References 36 publications

Numerical Simulation Analysis of Secondary Slip of Earthquake-Induced Landslide

Numerical Simulation Analysis of Secondary Slip of Earthquake-Induced Landslide

Standardized field methods for fracture-focused surface processes research

Creep Fracture Characteristics and the Constitutive Model of Salt Rock under a Coupled Thermo-Mechanical Environment

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