Fracture Failure of Consequent Bedding Rock Slopes After Underground Mining in Mountainous Area

Jianxin, Tang; Dai, Zhangyin; Wang, Yanlei; Zhang, Lu

doi:10.1007/s00603-019-01876-8

Cited by 29 publications

(9 citation statements)

References 40 publications

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“…The induced ground deformations can trigger landslides as is the case in Southwestern China. In relation to this, Tang et al (2019) present a theoretical model to predict fracture development in a bedded rock slope following underground coal mining. The results of a physical model in the laboratory are presented to validate the theoretical model.…”

Section: The Special Issuementioning

confidence: 99%

Introduction to the Special Issue “Rock Mechanics Advances in China Coal Mining”

Zhang

Barla

2019

Rock Mech Rock Eng

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Section: The Special Issuementioning

confidence: 99%

Introduction to the Special Issue “Rock Mechanics Advances in China Coal Mining”

Zhang

Barla

2019

Rock Mech Rock Eng

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“…Unlike that of an intact rock mass, the deformation and failure of a fractured rock mass is a problem of “re‐deformation” and “re‐failure.” Due to the existence of cracks, the mechanical properties (the ability to resist external loads) of the rock mass are weakened to a certain extent, which leads to a potential threat to subsequent engineering activities. Engineering disasters caused by the propagation and coalescence of fractures in rock masses are common in both ground slope engineering and underground surrounding rock engineering 1–3 . The deformation and failure of the rock mass are closely related to the existence of cracks 4–7 .…”

Section: Introductionmentioning

confidence: 99%

Study on the fracture behavior of prefabricated fissures granite based on DIC and laser scanning techniques

Hao

et al. 2021

Fatigue Fract Eng Mat Struct

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The initiation, propagation, and coalescence of cracks in the rock bridge are the root causes of rock failure. However, the identification of cracks propagation paths is a problem in rock mechanics. This paper studies the evolutionary law of the strain field in the rock bridge region of granite with pre‐fissures using 3D‐DIC after equivalence and simplification. Based on the real crack initiation mechanism of “relative slip between regions” proposed in this paper, combined with the priority order of crack propagation at the edge of the rock bridge, the pattern of cracks propagation and coalescence was obtained. We analyze the fracture characteristics in roughness and morphology to verify the validity of the proposed mechanism. The tensile and shear failure areas around the rock bridge were identified quantitatively, and the roughness, fractal dimension, and energy consumption of the sections formed by tensile failure and shear failure are different.

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“…Rainfall increases the weight of the sliding mass, decreases the shear strength of the soil, and groundwater level change could cause dynamic and static pore pressure inside landslide (Tsai, 2008;Li et al, 2018a). As one of the most catastrophic types of landslide, the affected bedding rock has a strong sensitivity to water, because a weak structural layer is widely developed in the rock strata (Gu, 1979;Huang, 2007;Yin, 2011;Tang et al, 2019;Wang et al, 2019;Chen et al, 2020), such as in the 2008 Jiweishan landslide (Yin et al, 2011;Tang et al, 2015;Zhang et al, 2018a), 2006 Leyte landslide (Evans et al, 2007;Guthrie et al, 2009), and so on. Therefore, it is necessary to study the deformation characteristics and failure mechanism of affected bedding rock slopes triggered by rainfall.…”

Section: Introductionmentioning

confidence: 99%

Emergency Survey and Stability Analysis of a Rainfall-Induced Soil-Rock Mixture Landslide at Chongqing City, China

Zhou

Ai²,

Huang³

et al. 2021

Front. Earth Sci.

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The stability analysis of damaged landslides and unstable debris is important for rescue work and emergency operations. This paper investigates a predisposed geological emergence, inducing the factors and deformation processes of the Zhongbao landslide, which happened on July 25, 2020. The stability of the landslide debris was evaluated by an integrated monitoring system consisting of ground-based radar, unmanned aerial vehicles, airborne Lidar, thermal infrared temperature monitoring, GNSS displacement monitoring, deep displacement monitoring, and rainfall monitoring. The strata and weak layer controlled the landslide failure, and topography defined the boundary of the failed rock mass. A continually intensive rainfall caused the deformation and accelerated failure of the landslide. The shallow and steep deposit (Part I) firstly slid at a high velocity, and then pushed the rear part of the landslide (Part II) to deform, forming numerous cracks, which accelerated the rainfall infiltrating into the rock mass. The moisture content increase could decrease the strength of the shale rock within the bedding planes. Finally, with the rock and soil mass sliding along the weak layer, a barrier dam and a barrier lake were formed. The monitoring and numerical simulation results showed that after the landslide failure, there was still local collapse and deformation occurrences which threatened rescue work and barrier lake excavation, and the stability of the accumulation area gradually decreased as the rainfall increased. Therefore, the barrier dam was not excavated until the accumulation rate gradually stabilized on July 28. Moreover, most of the reactivated deposits still accumulated in the transportation and source areas. Thus, in August, the displacement of the landslide debris gradually accelerated in a stepwise manner, and responded strongly to rainfall, especially in the accumulation area, so that it was inferred that the damaged landslide could slide again and cause a more threatening and severe failure. The analysis results of the study area can provide references for the failure mechanism of a rainfall-induced landslide and the stability evaluation of a damaged landslide.

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Fracture Failure of Consequent Bedding Rock Slopes After Underground Mining in Mountainous Area

Cited by 29 publications

References 40 publications

Introduction to the Special Issue “Rock Mechanics Advances in China Coal Mining”

Introduction to the Special Issue “Rock Mechanics Advances in China Coal Mining”

Study on the fracture behavior of prefabricated fissures granite based on DIC and laser scanning techniques

Emergency Survey and Stability Analysis of a Rainfall-Induced Soil-Rock Mixture Landslide at Chongqing City, China

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