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一、引言我们知道,灌区渠系水利用系数η是综合反映渠道工作状况和灌溉管理水平的重要指标。在规划设计渠道时,应根据灌区大小、渠床土质、渠道长度、防渗措施和管理水平等因素,合理选择一个渠系水利用系数η_设。这一数值要求工程竣工后,灌区的实际渠系水利用系数η_实须大于或等于η_设。但是,如何评价η_实,如何分析渠道质量是渠道质检工作的重要内容。为此,根据工程实际,本文提出了单位渠长平均水利用系数η_0值的计算
I. INTRODUCTION We know that the coefficient of water utilization of canal system is an important index that comprehensively reflects the working status of channel and the level of irrigation management. In the planning and design of channels, the rational selection of water use coefficient η_setting of a canal should be based on such factors as the size of irrigated area, the quality of canal bed, the length of canal, the seepage control measures and management level. This value requires that after the completion of the project, the actual canal water use coefficient η_ must be greater than or equal to η_set. However, how to evaluate η_ real, how to analyze the quality of the channel is an important part of the channel quality inspection work. Therefore, according to the engineering practice, this paper proposes the calculation of the average water utility coefficient η_0 of unit canal length