Risk Assessment of Shield Tunnel Construction in Karst Strata Based on Fuzzy Analytic Hierarchy Process and Cloud Model
Karst is an unfavorable geology that is very undesirable in tunnel construction. It is extremely risky due to the complexity and fuzziness of shield excavation in karst strata. To reduce the construction risk of shield tunneling in karst strata, a risk assessment method based on cloud model and fuzz...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2021/7237136 |
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| _version_ | 1832546959004532736 |
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| author | Guowang Meng Yangchun Ye Bo Wu Guijun Luo Xu Zhang Zhiqiang Zhou Wentao Sun |
| author_facet | Guowang Meng Yangchun Ye Bo Wu Guijun Luo Xu Zhang Zhiqiang Zhou Wentao Sun |
| author_sort | Guowang Meng |
| collection | DOAJ |
| description | Karst is an unfavorable geology that is very undesirable in tunnel construction. It is extremely risky due to the complexity and fuzziness of shield excavation in karst strata. To reduce the construction risk of shield tunneling in karst strata, a risk assessment method based on cloud model and fuzzy analytic hierarchy process (FAHP) is proposed. A risk assessment index system is established, including four first-level indices of karst geological conditions, hydrogeological conditions, tunnel design, and shield construction, as well as seventeen second-level indices. Fuzzy analytic hierarchy process is used to determine the evaluation indices weights. The numerical characteristics of each index and the risk cloud diagram are obtained via the backward cloud generator and forward cloud generator, respectively. The certainty degrees of the assessment indices corresponding to each risk level are calculated, and the final risk level is determined based on the comparison of the risk cloud diagram and the principle of maximum certainty. The proposed model is applied to the risk analysis and calculation of shield tunnel engineering, and the risk assessment results indicate that the comprehensive risk level of shield tunnel construction in karst strata is level II, which is consistent with the actual project. It demonstrates that the proposed method can provide a reference for the risk assessment of shield tunnels construction in karst strata. |
| format | Article |
| id | doaj-art-8e53bfa74d214757881de56a782c45a7 |
| institution | Kabale University |
| issn | 1875-9203 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-8e53bfa74d214757881de56a782c45a72025-02-03T06:46:27ZengWileyShock and Vibration1875-92032021-01-01202110.1155/2021/7237136Risk Assessment of Shield Tunnel Construction in Karst Strata Based on Fuzzy Analytic Hierarchy Process and Cloud ModelGuowang Meng0Yangchun Ye1Bo Wu2Guijun Luo3Xu Zhang4Zhiqiang Zhou5Wentao Sun6College of Civil Engineering and ArchitectureCollege of Civil Engineering and ArchitectureCollege of Civil Engineering and ArchitectureChina Construction Fifth Engineering Bureau Civil Engineering Co., Ltd.China Construction Fifth Engineering Bureau Civil Engineering Co., Ltd.China Construction Fifth Engineering Bureau Civil Engineering Co., Ltd.College of Civil Engineering and ArchitectureKarst is an unfavorable geology that is very undesirable in tunnel construction. It is extremely risky due to the complexity and fuzziness of shield excavation in karst strata. To reduce the construction risk of shield tunneling in karst strata, a risk assessment method based on cloud model and fuzzy analytic hierarchy process (FAHP) is proposed. A risk assessment index system is established, including four first-level indices of karst geological conditions, hydrogeological conditions, tunnel design, and shield construction, as well as seventeen second-level indices. Fuzzy analytic hierarchy process is used to determine the evaluation indices weights. The numerical characteristics of each index and the risk cloud diagram are obtained via the backward cloud generator and forward cloud generator, respectively. The certainty degrees of the assessment indices corresponding to each risk level are calculated, and the final risk level is determined based on the comparison of the risk cloud diagram and the principle of maximum certainty. The proposed model is applied to the risk analysis and calculation of shield tunnel engineering, and the risk assessment results indicate that the comprehensive risk level of shield tunnel construction in karst strata is level II, which is consistent with the actual project. It demonstrates that the proposed method can provide a reference for the risk assessment of shield tunnels construction in karst strata.http://dx.doi.org/10.1155/2021/7237136 |
| spellingShingle | Guowang Meng Yangchun Ye Bo Wu Guijun Luo Xu Zhang Zhiqiang Zhou Wentao Sun Risk Assessment of Shield Tunnel Construction in Karst Strata Based on Fuzzy Analytic Hierarchy Process and Cloud Model Shock and Vibration |
| title | Risk Assessment of Shield Tunnel Construction in Karst Strata Based on Fuzzy Analytic Hierarchy Process and Cloud Model |
| title_full | Risk Assessment of Shield Tunnel Construction in Karst Strata Based on Fuzzy Analytic Hierarchy Process and Cloud Model |
| title_fullStr | Risk Assessment of Shield Tunnel Construction in Karst Strata Based on Fuzzy Analytic Hierarchy Process and Cloud Model |
| title_full_unstemmed | Risk Assessment of Shield Tunnel Construction in Karst Strata Based on Fuzzy Analytic Hierarchy Process and Cloud Model |
| title_short | Risk Assessment of Shield Tunnel Construction in Karst Strata Based on Fuzzy Analytic Hierarchy Process and Cloud Model |
| title_sort | risk assessment of shield tunnel construction in karst strata based on fuzzy analytic hierarchy process and cloud model |
| url | http://dx.doi.org/10.1155/2021/7237136 |
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