Existent problem of headwork at yuelai irrigation area in huachuan county 悦来灌区渠首存在的问题及改造措施
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（ ceramis headwork : 500 , 000 life cycles , water static pressure max , 35 bar ） 陶瓷阀芯：使用寿命开关50万次，静态最大耐压35巴。
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Study on automation for hydrologic monitor of headwork of xiaohe irrigation district 山西省潇河灌区渠首枢纽工程水文监测自动化研究
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Hydraulics test research on diversion sluice for extension project of taocha canal headwork 陶岔渠首枢纽扩建工程引水闸水力学试验研究
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( 7 ) an optimum design method for the artificial bend channel in diversion headwork of bend type by the theory of minimum rate of energy dissipation （ 7 ）将最小能耗率原理应用到低水头弯道式引水枢纽设计中。
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( droit de suite is reasonable . on one hand , its characters define that the increment of an art work not only comes from the headwork of the author , but also profits from the investment of the owner 一方面，美术作品所具有的特殊性(知识产品属性、不可重复性和物质依赖性)决定了，艺术品增值的根本来源是美术作品作者的智力劳动，同时得益于艺术品所有人的资金投入。
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It is mainly by analyzing the features of sediment concentration distribution in vertical in this paper , and then the problems of effect of headwork gates on sediment prevention , relation between distribution of sediment deposition in irrigated areas and its treatment and utilization , estimating the influence of withdrawing water and sediment on channel deposition and erosion in lower yellow river , and treatment and utilization of the sediment entered into canals are discussed 本文主要从分析计算含沙量沿垂线分布特点，探讨渠首防沙的作用，分析灌区泥沙淤积分布特性与泥沙处理利用的关系，分析计算引水引沙对黄河下游河道冲淤影响及入渠泥沙的处理利用等问题。
