关键词: 控制蓄量法, 渠系运行方式, 非计划分水, 南水北调中线一期工程

Abstract: Considering the current operation mode of demand-oriented water supply adopted by the phaseⅠworks of Middle Route Project of South-to-North Water Diversion and the problem of temporary water demand changes of water users, a canal system operation mode based on controlled water storage method is put forward, which can make full use of the canal storage capacity to quickly respond to unscheduled outflow changes, and minimize the check gates number in operation. The method includes three parts, namely, cycle determination of canal storage and release, adjustable canal storage volume analysis and daily discharge calculation passing through the check gate. The method is validated against the reach from Taocha check gate to Beijuma check gate in Hebei Province, the phaseⅠworks of Middle Route Project of South-to-North Water Diversion. The results show that the proposed operation mode can satisfy the safe and high-efficient operation requirements of the main canal of the middle route project, as well as improve the flexibility and stability of the canal control system, so that it can be applied to large canal systems with complicated flow conditions.

Key words: controlled water storage method, canal operation method, unscheduled turnout variations, PhaseⅠworks Middle Route of South-to-North Water