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- Carrera, Jesus, et al. Show all 5 Authors
- Engineering geology 2012 v.145-146 pp. 41-49
- analytical methods; aquifers; engineering; equations; groundwater flow; water table
- ... Impervious structures below the water table modify the natural groundwater flow in aquifers. They act as barriers, causing heads to rise upgradient and to fall downgradient. We define the barrier effect as the increase in head loss across the barrier with respect to the natural conditions prior to construction. We distinguish between regional (the minimum head loss observed at long distances) and ...
- Carrera, Jesus, et al. Show all 6 Authors
- Engineering geology 2012 v.125 pp. 1-10
- analytical methods; aquifers; buildings; dewatering; diaphragm; drainage; groundwater; mathematical models; monitoring; risk; sediments; soil; subsidence
- ... Underground linear excavations often encounter problems when crossing aquifers. A viable option for shallow tunnels is the “cut and cover method”. Still, when enclosing diaphragm walls display open joints, even this method risks flooding, which affects construction operations, and soil dragging, which may lead to subsidence and affect nearby buildings outside the enclosure. Characterizing the stat ...