JOURNAL OF YANGTZE RIVER SCIENTIFIC RESEARCH INSTI ›› 2016, Vol. 33 ›› Issue (2): 14-18.DOI: 10.11988/ckyyb.20140811

• WATER RESOURCES AND ENVIRONMENT • Previous Articles     Next Articles

Negative Effects of Diversion Tunnel Construction on Groundwater Environment near the East of Erhai Lake in Yunnan

WANG Ya-li1, XU Mo2, ZHANG Qiang2, ZHOU Zhong-hai2   

  1. 1.Technical Consultation Company Limited of Sichuan Academy of Environmental Sciences,Chengdu 610000, China;
    2.State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China
  • Received:2014-09-18 Online:2016-02-01 Published:2016-02-17

Abstract: In order to prevent negative effects of tunnel construction on groundwater environment, we applied an evaluation system to a diversion tunnel project located near the east of Erhai Lake in Yunnan. On the basis of analysing the geological and hydrogeological conditions, we employed analytic hierarchy process (AHP) and fuzzy comprehensive evaluation method to select appropriate index weight and evaluate negative effects on groundwater environment. Results show that when the tunnel goes through Hecun segment of Dali, negative effects of level IV within 5 000 m on both sides of the tunnel and decline of groundwater are caused by tunnel construction. Ground subsidence, karst collapse, obvious surface flow reduction, and wellspring depletion will also take place. The research results offer reference for the construction and design of the diversion tunnel.

Key words: Erhai Lake in Yunnan, tunnel construction, negative effects on groundwater environment, AHP, index weight, fuzzy comprehensive evaluation method

CLC Number: