Efficiency of risk management for tunnel security of megaprojects construction in China based on system dynamics

Liu, Kai; Liu, Yuming; Kou, Yuanyuan; Yang, Xiaoxu; Hu, Guangzhong

doi:10.1080/13467581.2023.2223696

Cited by 6 publications

(2 citation statements)

References 42 publications

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“…Currently, most studies on major railway engineering construction rely on traditional risk prevention and control methods [5][6][7]. These studies primarily focus on risk management, emphasizing a pre-construction analysis of explicit risk sources, predicting the probability and impact of risks, and formulating risk plans and contingency measures in advance to control and mitigate damage caused by disasters within an acceptable range.…”

Section: Introductionmentioning

confidence: 99%

Study on Resilience Evaluation for Construction Management of Major Railway Projects

Jiang,

Zhao,

Cai

et al. 2024

Buildings

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The construction of major railway projects poses significant risks, which present considerable challenges to construction management. To accurately assess the level of construction management for these projects, this study incorporated resilience theory into the field. The grounded theory method was utilized to establish a resilience evaluation indicator system for managing a major railway project construction. Additionally, a resilience evaluation model based on the Analytic Hierarchy Process (AHP) and fuzzy comprehensive evaluation method was proposed. This model was applied to evaluate the construction management resilience of a major railway project located in the mountainous region of southwest China. The results indicated that the project exhibits a very high overall level of construction management resilience. Specifically, it demonstrates high levels of ability to monitor and warn, an ability to resist absorption, and an ability to respond to emergencies. Additionally, it showcases high levels of ability to recover and rebuild, and an ability to learn to adapt. The evaluation results were consistent with the actual situation and verified the correctness and reliability of the method. Based on the aforementioned research findings, this paper puts forward recommendations on material redundancy and resource security from a resource perspective, and suggestions on organizational optimization and personnel capacity improvement from a subject perspective, thus indicating directions for enhancing the management level of major engineering railway constructions.

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Section: Introductionmentioning

confidence: 99%

Study on Resilience Evaluation for Construction Management of Major Railway Projects

Jiang,

Zhao,

Cai

et al. 2024

Buildings

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“…Expansive soils are characterized by their main constituents, such as montmorillonite, illite, and other hydrophilic minerals, thus widely distributed and exhibiting the property of swelling upon wetting and cracking upon drying [1]. The unique properties of expansive soils can cause significant hazards, including slope instability.…”

Section: Introductionmentioning

confidence: 99%

The Impact of Vegetation Roots on Shallow Stability of Expansive Soil Slope under Rainfall Conditions

Wang,

Xu,

Wang

et al. 2023

Applied Sciences

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The impact of reinforcing vegetation roots on the stability of expansive soil slopes with moisture absorption and expansion was investigated. Then, poinsettia is selected as the slope protection plant, and ABAQUS software (version 2022) with secondary development is used to simulate the moisture absorption and expansion of the expansive soil slope. After that, the strength reduction method is employed to study the effects on the displacement and plastic zone, and on the shallow layer of the expansive soil slope at different rainfall conditions. The following points are revealed: (1) The roots of the poinsettia can reduce the displacement of the slope. But, when the rainfall intensity exceeds the soil permeability coefficient, the soil reinforcement effect decreases. (2) The poinsettia root system can alleviate the concentration of plastic strain, disperse the plastic zone, and increase slope stability along the distribution of the roots. (3) The poinsettia roots can improve the shallow stability of the slope. But when the rainfall intensity exceeds the surface permeability coefficient, the magnitude of the reinforcement decreases. The results demonstrate that the poinsettia roots can enhance shallow slope stability. However, with increasing rainfall intensity, the ability of the poinsettia roots to enhance shallow slope stability gradually weakens.

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Evaluation of the current technologies used for the physical security and safety of selected railway tunnel portals as a case study in the Czech Republic

Smažinka,

Kavan,

Hrinko

2024

J Transp Secur

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The security and safety of the railway tunnels require technical measures, information processes, and trained experts. Proper implementation and integration of these elements is crucial to protect lives, property, and the operation of the rail network. The purpose of this study is to identify and describe technological security and safety measures at the portals of selected railway tunnels greater than 1000 m in the conditions of the Czech Republic and their subsequent evaluation. The method of semi-structured interviews with experts with experience in the implementation of security and safety measures was used for the elaboration. SWOT analysis was used to assess the safety level of selected railway tunnels. The evaluation was carried out based on multi-criteria decision making and pairwise evaluation on the principle of Fuller’s triangle. The technical solutions of two currently known technological solutions in the case study for accident elimination based on lidar detection supplemented by cameras are characterized by fundamental differences. The solution in the Ejpovice tunnel focuses on the detection of objects in the immediate vicinity of the portal or already entered it. The solution in the Březenský tunnel focuses on a larger detection zone extending tens of meters in front of the tunnel portal and is divided into two parts with different logic, the pre-alarm and the alarm itself. Integration of individual elements into a proactive and automated system that uses modern AI-based analytical algorithms and respects the process and technology specifics of the railway environment is important for the safety and security of the railway tunnel.

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Efficiency of risk management for tunnel security of megaprojects construction in China based on system dynamics

Cited by 6 publications

References 42 publications

Study on Resilience Evaluation for Construction Management of Major Railway Projects

Study on Resilience Evaluation for Construction Management of Major Railway Projects

The Impact of Vegetation Roots on Shallow Stability of Expansive Soil Slope under Rainfall Conditions

Evaluation of the current technologies used for the physical security and safety of selected railway tunnel portals as a case study in the Czech Republic

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