Research on the excavation stability evaluation method of Chaqishan ancient landslide in China

Wu, Lili; He, Keqiang; Guo, Lu; Zhang, Juan; Sun, Linna; Jia, Yangwen

doi:10.1016/j.engfailanal.2022.106664

Cited by 10 publications

(4 citation statements)

References 31 publications

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“…With the rapid economic development in China, infrastructure, industrial and civil buildings, as well as highway construction projects have been developing and extending to mountainous regions [1,2]. Owing to the control requirements of the line layout, excavation of some geological materials can sometimes be inevitable.…”

Section: Introductionmentioning

confidence: 99%

Study of the Multi-Critical Parameters Characterizing the Instability Behavior of Translational Rockslides Considering the Excavation

Liu,

Yang,

Wang

et al. 2024

Preprint

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Translational rockslides caused by toe excavation are one of the commonly seen geohazards in mountainous regions due to line traffic construction. Quantifying their failure extension length (FEL) and travel distance are of significant interest as well as huge challenges in landslide hazard assessment. In this paper, a simple criterion is proposed for predicting these two factors based on the principles of rigid body limit equilibrium and kinetic energy theorem. Further, the proposed criterion is validated against the field observations and numerical results with a practical case of the Xinjianan landslide, a medium-sized translational rockslide that occurred in 2013 in Nanchuan District, Chongqing. The findings indicate that a tiny discrepancy can be found in FEL between the field observations and the proposed criteria, while this discrepancy could be considerable in travel distance between different methods. However, the relative discrepancies all fall within 20%, deemed acceptable.

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Section: Introductionmentioning

confidence: 99%

Study of the Multi-Critical Parameters Characterizing the Instability Behavior of Translational Rockslides Considering the Excavation

Liu,

Yang,

Wang

et al. 2024

Preprint

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“…With the increase in the number of tunnels, in the spatial scope and address conditions of special areas, there will be in the space of the overlapping tunnel project, the new single-line or multiline tunnels through the existing tunnels will become more and more common [3,4]. The construction of underpass tunnels will disturb the overlying rock layer and the existing tunnel structure to a certain extent, which will cause the rock layer to move and the existing tunnel structure to settle, resulting in great safety hazards [5,6]. Therefore, the scientific and reasonable prediction of the deformation of existing tunnels and strata caused by the construction of underpass tunnels is of great theoretical and engineering significance for the design and construction of underpass tunnels and for ensuring the safety of existing underground structures.…”

Section: Introductionmentioning

confidence: 99%

Deformation Prediction Model of Existing Tunnel Structures with Equivalent Layered Method‐Peck Coupled under Multiple Factors

Li,

Huang,

et al. 2024

Preprint

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By repeated unloading and loading of the excavation dynamic and static loads, repeated train dynamic and static loads of multi-factors, the underpass tunnel, cross tunnel engineering influence area rock layer, the existing tunnel structure of the three constitutes a multifaceted structure, multi-factor interaction system. Existing tunnels into the prediction theory model of the new tunnel excavation process of dynamic and static loads, dynamic and static loads of existing tunnels are mostly analyzed individually, the results of synergistic analysis needs to be improved. Based on the theory of the current layer method, the paper comprehensively considers the stiffness of the existing tunnel, the stiffness of the new tunnel, the excavation method load and the existing tunnel load, coupled with Peck's empirical formula, the theoretical model of deformation prediction for excavation of a two-lane highway tunnel under the tunnel through the existing railroad is proposed, and verified and optimized by numerical calculations and monitoring data, which proves the applicability and reliability of the theoretical model in the similar strata and the project promotion.

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“…With the increase in the number of tunnels, regarding the spatial scope and addressing conditions of special areas, in the space of the overlapping tunnel project, new single-line or multi-line tunnels through the existing tunnels will become more and more common [3,4]. The construction of underpass tunnels will disturb the overlying rock layer and the existing tunnel structure to a certain extent, which will cause the rock layer to move and the existing tunnel structure to settle, resulting in great safety hazards [5,6]. Therefore, the scientific and reasonable prediction of the deformation of existing tunnels and strata caused by the construction of underpass tunnels is of great theoretical and engineering significance for the design and construction of underpass tunnels and for ensuring the safety of existing underground structures.…”

Section: Introductionmentioning

confidence: 99%

Deformation Prediction Model of Existing Tunnel Structures with Equivalent Layered Method–Peck Coupled under Multiple Factors

Li,

Huang,

et al. 2024

Mathematics

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The existing tunnel structure, the new underpass tunnel structure and the rock strata in the area of influence of the crossover tunnel are interacting systems that are affected by various factors, such as dynamic and static excavation loads and dynamic and static train loads. The existing theoretical models for the deformation prediction of existing tunnels lack the synergistic analysis of dynamic and static loads on both existing and new tunnels. Based on the theory of the current layer method and Peck’s empirical formula, this paper considers the stiffness of existing tunnels, the stiffness of new tunnels, the loads of excavation methods and the loads of existing tunnels. The results show that a theoretical model for the prediction of the deformation of double-lane highway tunnels underneath existing railroad tunnels with the coupling of the current layer method and Peck under multiple factors is constructed; a modified Peck settlement formula for the base plate of the existing tunnels is put forward; and, through numerical calculations and monitoring data for validation and optimization, it is proved that the theoretical model is applicable to the excavation of tunnels underneath mountainous areas mined by the blasting method.

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Research on the excavation stability evaluation method of Chaqishan ancient landslide in China

Cited by 10 publications

References 31 publications

Study of the Multi-Critical Parameters Characterizing the Instability Behavior of Translational Rockslides Considering the Excavation

Study of the Multi-Critical Parameters Characterizing the Instability Behavior of Translational Rockslides Considering the Excavation

Deformation Prediction Model of Existing Tunnel Structures with Equivalent Layered Method‐Peck Coupled under Multiple Factors

Deformation Prediction Model of Existing Tunnel Structures with Equivalent Layered Method–Peck Coupled under Multiple Factors

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