富锦市锦西灌区灌排结合渠道设计方案比选
Heilongjiang Science and Technology of Water Conservancy（2017）
Abstract
灌排渠沟道结合布置方案是利用灌区范围内已形成网络的排水骨干工程(排水干、支沟)兼做输水的灌溉渠道.输水到田间最末一级固定渠道后,由农户自行提水灌溉到田间.由于灌溉水位低,提水扬程小,所以渠首运行费受益农户分摊小,但农户二次提水扬程大,田间运行费高,导致灌区总运行费较高.通过对灌排结合渠道水面线的推求和比较,使灌区投资及运行费最低,且二次提水扬程小,田间运行费低,农户更乐于接受,效益更好.
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