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2017 | 26 | 4 |

Tytuł artykułu

Risk assessment of water inrush and karst tunnels based on the efficacy coefficient method

Warianty tytułu

Języki publikacji

EN

Abstrakty

EN
Water inrush is one of the typical geological hazards of tunnel construction in karst areas. It is necessary to predict water inrush more accurately for karst tunnels. Firstly, we created a model on risk evaluation of water inrush based on the efficacy coefficient method. Then karst hydrologic and engineering geological conditions were considered in detail, and several typical factors were selected as evaluation indexes, including formation lithology, unfavorable geology, groundwater level, and so on. Moreover, the weight coefficients of the selected evaluation indices were calculated using the analytic hierarchy process method. Furthermore, the total efficacy coefficient was presented to specify the risk grade of the evaluation samples. Finally, the risk grade of water inrush for karst tunnels is divided into four levels: severe (red), high (orange), elevated (yellow), and guarded (blue). Additionally, the model of risk assessment of water inrush was applied to Jigongling tunnel along the Fanba Expressway in China. The results show that the present evaluation results agree well with the construction situation, which also agree with the relative analysis results of attribute mathematical theory. The presented work with the efficacy coefficient method is relatively simple with strong operability, which has potential for predicting water inrush in karst tunnels.

Słowa kluczowe

Wydawca

-

Rocznik

Tom

26

Numer

4

Opis fizyczny

p.1765-1775,fig.,ref.

Twórcy

autor
  • State Key laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou, Jangsu, 221116, China
autor
  • State Key laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou, Jangsu, 221116, China
  • School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou, Jangsu, 221116, China
autor
  • School of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou, Jangsu, 221116, China
autor
  • State Key laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou, Jangsu, 221116, China
  • School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou, Jangsu, 221116, China
autor
  • State Key laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou, Jangsu, 221116, China
autor
  • State Key laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou, Jangsu, 221116, China

Bibliografia

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  • 5. Lin C.N., LI L.P., HAN X.R. Research on forecast method of tunnel water inrush in complex karst areas [J]. Chin J Rock Soil Mech, 27, 2008.
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Typ dokumentu

Bibliografia

Identyfikatory

Identyfikator YADDA

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