Hydraulic response of long-distance canal system under the effect of rainstorm
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Abstract:
Rainstorm is a common weather phenomenon. It infuences the timely and sufficient water supply of long-distance canal system and engineering security. In this paper, we established a mathematical model to simulate the hydraulic responses under different rainstorm processes. The simulation results showed that: the rainstorm affects the operation security of the system, and the proper canal system operation can improve the security. Rainstorm can raise the water level, the extent of which depends on rainstorm intensity, rainstorm scope, and the location of the observed cross-section. The maximum increase occurs down the last canal pool. A 3-day rainstorm can increase the water level by 0.44m, endangering canal safety. With joint operation of the gates, the dammed water level can be effectively reduced, but it is still influenced by the contr ol mode of the canal system and par ameter values; and the risk position will be the first canal pool in the rainstorm-stricken area.
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