Geomechanics and Engineering

  • 제11권4호
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  • Pages.493-513
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  • 2016
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  • 2005-307X(pISSN)
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  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Risk assessment of water inrush in karst tunnels based on a modified grey evaluation model: Sample as Shangjiawan Tunnel

  • Yuan, Yong-cai (Geotechnical and Structural Engineering Research Center, Shandong University) ;
  • Li, Shu-cai (Geotechnical and Structural Engineering Research Center, Shandong University) ;
  • Zhang, Qian-qing (Geotechnical and Structural Engineering Research Center, Shandong University) ;
  • Li, Li-ping (Geotechnical and Structural Engineering Research Center, Shandong University) ;
  • Shi, Shao-shuai (Geotechnical and Structural Engineering Research Center, Shandong University) ;
  • Zhou, Zong-qing (Geotechnical and Structural Engineering Research Center, Shandong University)
  • 투고 : 2015.12.13
  • 심사 : 2016.05.17
  • 발행 : 2016.10.25
⟨ 이전 논문 다음 논문 ⟩

초록

A modified grey clustering method is presented to systematically evaluate the risk of water inrush in karst tunnels. Based on the center triangle whitenization weight function and upper and lower limit measure whitenization weight function, the modified grey evaluation model doesn't have the crossing properties of grey cluster and meets the standard well. By adsorbing and integrating the previous research results, seven influence factors are selected as evaluation indexes. A couple of evaluation indexes are modified and quantitatively graded according to four risk grades through expert evaluation method. The weights of evaluation indexes are rationally distributed by the comprehensive assignment method. It is integrated by the subjective factors and the objective factors. Subjective weight is given based on analytical hierarchy process, and objective weight obtained from simple dependent function. The modified grey evaluation model is validated by Jigongling Tunnel. Finally, the water inrush risk of Shangjiawan Tunnel is evaluated by using the established model, and the evaluation result obtained from the proposed method is agrees well with practical situation. This risk assessment methodology provides a powerful tool with which planners and engineers can systematically assess the risk of water inrush in karst tunnels.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science of China

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