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Confined flow into a tunnel during progressive drilling: An analytical solution
Date de parution
2005
In
Ground Water
Vol.
6
No
43
De la page
943
A la page
946
Mots-clés
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.
Identifiants
Type de publication
journal article
