Hydrogeological Prognosis with Regard to Realisation of the New Colle Di Tenda Road Tunnel | Science Publications

American Journal of Environmental Sciences

Adriano Fiorucci¹  Massimo V. Civita¹  Salvatore Papale¹  Bartolomeo Vigna¹  Cinzia Banzato¹ 

关键词: Colle di tenda;    parallel monitoring;    hydrogeological prognosis;    road tunnel;    carbonate aquifer;    electrical conductivity;    chemical-physical variations;    depletion coefficient;    human consumption;    overlaid permeability;    sulphate-bicarbonate-calcic facies;   

DOI  :  10.3844/ajessp.2011.1.14

学科分类：环境科学（综合）

来源: Science Publications

【 摘 要 】

Problem statement: The doubling of Tenda pass road tunnel jointing SW France toPiedmont (Italy) was planned to penetrate a complicate rock structure in which several complex play anhydrogeologic role including carbonate-Karst aquifer between flysch impervious complexes. The mainproblem of the project is the presence of an hydraulic circulation feeding a spring of social and economicgreat importance discharging into a railroad tunnel below. Approach: The authors was charged byANAS, Italian National Roads Authority, to execute a complete hydrogeologic prognosis of the situationthat will be determinate by the excavation of the new tunnel and forecast as well as possible the hazardfor the tapped spring. Results: Two years research have included a complete hydrogeologic andhydrochemical survey all the hypothesized structure feeding the spring, with several bore holes used asobservation wells, the use of several monitoring device for the discharge and the chemical characters ofspring, a lot of laboratory tests on cements and micro-cements and other materials used in waterproofingand sustain the rocks during the excavation and the concrete lining of the tunnel. Conclusion: The studyends with the evaluation of the vulnerability of the spring and the forecasting of contamination anddepletion of the spring.

【 授权许可】

Unknown