Safety Assessment in Tunnel Grouting Using Fuzzy Rotational and Angular Models

Al-Labadi, Khalid R.; Al-Humaidi, H. M.; Tan, Fabian Hadipriono

doi:10.1061/(asce)cf.1943-5509.0000044

Cited by 9 publications

(5 citation statements)

References 3 publications

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“…(7) Determine the final comprehensive evaluation vector Z of the target layer: the steps are the same as for steps (5) and (6). First, the fuzzy relation matrix R 2 is synthesized according to the subordination degree vectors of each index in the second level.…”

Section: E Principle Of Hierarchy Fuzzy Comprehensive Evaluationmentioning

confidence: 99%

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Risk Assessment of an Existing Metro Tunnel in Close Proximity to New Shield Tunnels following Construction

Xia²,

Zhang

et al. 2022

Journal of Engineering

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The construction of a new shield tunnel near an existing operating tunnel poses a great risk to the existing tunnel structure due to the continuous encryption of the rail transit network. This study investigated the safety status of an existing metro tunnel in close proximity to new shield tunnels following construction. A fuzzy comprehensive assessment model (hierarchical fuzzy comprehensive evaluation model) based on an analytic hierarchy process was proposed to assess the risks of the existing tunnel structure. The threshold of indicators in the existing tunnel structure risk assessment system was determined based on the tunnel function and structure security. Then, we described the membership vector determination method, weight vector determination method, and comprehensive evaluation vector processing method. Taking a project case in China as the research object, the quantitative analysis of the established evaluation system was carried out, and the intuitive risk assessment results were obtained. The hierarchical fuzzy comprehensive evaluation model can be employed as a decision-making tool for newly built shield tunnels passing through the existing tunnels, which can provide guidance for tunnel maintenance and guarantee.

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Section: E Principle Of Hierarchy Fuzzy Comprehensive Evaluationmentioning

confidence: 99%

“…Risk analysis is a tool designed to establish a proactive safety strategy by investigating potential risks [4][5][6]. In recent decades, risk analysis has also been adapted to tunnel safety [7,8].…”

Section: Introductionmentioning

confidence: 99%

Risk Assessment of an Existing Metro Tunnel in Close Proximity to New Shield Tunnels following Construction

Xia²,

Zhang

et al. 2022

Journal of Engineering

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“…A number of hazards are being faced by human workforce during grouting operations. Grouting work consists of three major stages: 1) Involvement of powerful hydraulic and pneumatic drilling machines for drilling; 2) Usage of agitators and mixers of numerous capacities for mixing process; and 3) Usage of different capacity pumps for better output in pumping [15].…”

Section: Extent Of Damage In Tunnelsmentioning

confidence: 99%

Management of Various Safety Parameters in Tunnel Construction: A Critical Review

2020

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Population is growing rapidly and so are vehicles on roads. This leads to enormous need of tunnels and subways for easy locomotion and mobilization. From conventional tunnels, for sewage and water facilities to modern electrified tunnels, for mass transit and underwater highways, method of construction of a tunnel to its safety inspection and maintenance has taken a wide leap. Tunnel construction requires wide range of resources like human, technology, machinery, materials, energy, and finance. To handle all these resources simultaneously becomes complex and requires good management. Even with good management, accidents and hazards might occur. A critical review of various safety parameters while constructing a tunnel and its management is presented in this paper. This review paper discusses the history of safety of tunnels till present safety measures and techniques adopted around the world for different tunnels; various critical factors which affect the safety in tunnels; the extent of damage occurring due to these factors; numerous preventive measures which are adopted around the world to prevent loss of property and lives in tunnels; and advanced technology and software, which are being used in modern era to enhance safety in tunnel construction. The study from manual horse drawn-tramway to autonomous robotic system has been done. This paper also considers various tunnels around the world and gives a summary of factors for safety focused on for making these tunnels, with its adopted remedy.

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“…Sari et al [21] evaluated the urban rail system in Istanbul under different risk factors using the fuzzy analytic hierarchy process (FAHP) and conducted a multicriteria assessment of the existing rail system to allocate scarce resources. Al-Labadi et al [22] proposed a fuzzy set model that can accurately assess the safety performance of grouting operations during metro tunnel construction. Zhang et al [23] proposed a fuzzy decision analysis method to provide guidance for safety management in metro construction.…”

Section: Introductionmentioning

confidence: 99%

Quality Risk Evaluation of Urban Rail Transit Construction Based on AHP–FCE Method

Ma,

Tian,

Zou

et al. 2023

Advances in Civil Engineering

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The demand for urban transport is increasing globally, and urban rail transit is an important infrastructure for meeting this demand. The objectives of this study were to effectively control and prevent all types of risks in the construction of metro projects and improve the quality and safety control of urban metro project construction. First, 20 index factors were selected from the five dimensions of “man–machinery–materials–methods–environment” and constructed an index system for assessing urban metro construction quality risks. Second, the analytic hierarchy process (AHP) and fuzzy comprehensive evaluation (FCE) methods were used to comprehensively evaluate the construction quality risks of subway projects, and the weights of the secondary indices were determined. Finally, the importance of secondary indicators was evaluated using the integrated AHP–FCE method, and the model was applied to engineering practice for validation. The results indicated that the comprehensive AHP–FCE method has good adaptability and rationality and has practical application value for metro project construction quality and safety risk assessment. It can help prevent urban metro construction quality accidents and provides a novel idea for metro project construction quality risk assessment.

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Safety Assessment in Tunnel Grouting Using Fuzzy Rotational and Angular Models

Cited by 9 publications

References 3 publications

Risk Assessment of an Existing Metro Tunnel in Close Proximity to New Shield Tunnels following Construction

Risk Assessment of an Existing Metro Tunnel in Close Proximity to New Shield Tunnels following Construction

Management of Various Safety Parameters in Tunnel Construction: A Critical Review

Quality Risk Evaluation of Urban Rail Transit Construction Based on AHP–FCE Method

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