Environmental and hydrogeological problems in karstic terrains crossed by tunnels: a case study

@article{Gisbert2009EnvironmentalAH,
  title={Environmental and hydrogeological problems in karstic terrains crossed by tunnels: a case study},
  author={Juan Gisbert and {\'A}ngela Vallejos and A. Gonz{\'a}lez and Antonio Pulido-Bosch},
  journal={Environmental Geology},
  year={2009},
  volume={58},
  pages={347-357}
}
The construction of one of the high-speed railway tunnels between Malaga and Córdoba (South Spain) beneath the Abdalajís mountains occasioned a series of hydrogeological problems with geotechnical and environmental impacts. The double tunnel, 7,300 m in length, runs south to north across several lines of small, calcareous mountains that have a highly complex structure. Beneath the Jurassic limestones lie Triassic clays and evaporites. Overlying the limestones is an essentially marly and… 
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TLDR
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Comprehensive Evaluation of Hydrogeological Impact of Tunnel Construction in Karst Aquifers by 3D Numerical Simulations and Water Balance Models
  • Xiaokang Zheng, Bing-Qi Zhou, +4 authors Yi‐Feng Chen
  • Physics
    IOP Conference Series: Earth and Environmental Science
  • 2021
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A number of problems, e.g. sudden inflows are encountered during tunneling under the piezometric level, especially when the excavation crosses high transmissivity areas. These inflows may drag
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Abstract A sudden increase of groundwater inflow of 670 tons a day was experienced during tunneling in a limestone formation at around 53 m below the ground surface. The limestone cavities were
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