Section 4: Soil and Water Conservation Engineering
Gully Control and Drop Spillways
Subtopic: Chute Spillway
Question Statement:
In a chute spillway for gully reclamation, energy dissipation at the toe of the steep chute channel is typically provided by:
Options:
(A) A hydraulic jump stilling basin with chute blocks, baffle piers, and end sill
(B) A siphon spillway barrel
(C) A porous sand filter
(D) A vegetative hedge
Answer Key:
A
Step-by-Step Solution & Explanation
Supercritical flow exiting the chute enters a SAF (Saint Anthony Falls) or USBR stilling basin where chute blocks and baffle piers force a hydraulic jump to dissipate destructive kinetic energy.