Numerical studies of hydraulic transients for the TARP Phase I system
were conducted in 1988 and 1992. These studies revealed that due to
storage and/or conveyance limitations of the TARP Phase I Mainstream
system using the Keifer/Song maximum hydrograph, inflow must be
substantially reduced to avoid geysering problems induced by hydraulic
transients. In order to improve the hydraulic transient condition, TARP Phase
II has been proposed to add additional water storage and increase the
conveyance ability. A hydraulic transient study for the TARP Phase II system
was also conducted recently. However, before the TARP Phase II is
completed, a reasonable tunnel operation method for the current TARP Phase
I system must be sought to minimize the potential of the hydraulic transient
problems. This study is to investigate the extent and nature of hydraulic
transients in the current TARP Phase I Mainstream tunnel under the existing
flow control structures for different hydrographs.
He, Jianming; Song, Charles C. S.; Liu, Ying; Cuiling, Gong.
Hydraulic Transient Study of Mainstream Tunnel System and Control System.
St. Anthony Falls Hydraulic Laboratory.
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