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Confined Flow into a Tunnel during Progressive Drilling : An Analytical Solution: Technical Note
Date de parution
2005
In
Ground Water, Blackwell, 2005/43/6/943-946
Résumé
A convolution integral is developed to evaluate transient, drilling speed–dependent discharge rates into a tunnel gradually excavated in a homogeneous infinite aquifer. Comparison with the classical instantaneous-drilling evaluation commonly used in practice reveals drastically reduced early-time discharge rates, higher maximum rates, and similar long-term rates. Dimensionless-type curves are provided to help assess total discharge sensitivity to drilling time and predict safer maximum flow rates.
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Type de publication
journal article
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