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Silting Prevention Technology of Muddy Water Delivery for Irrigation in Low-pressure Pipeline System

机译：低压管道系统灌溉浑水输沙防淤技术

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The irrigation system of low-pressure pipeline could save water notably with a low cost and convenient management.Therefore,the irrigation technology was an orientational technical measure when water saving irrigation was developed or engineering was reconstructed in many developed countries.Pipeline blocking for silt up was a key factor that results in the irrigation technology of low-pressure pipeline and was not easy to generalize in irrigation areas where irrigation water was diverted from sediment-laden river.The origin of pipeline silting was analyzed and the types of blocking were expounded based on the operation condition of test projects.The counter measures of siltation prevention were put forward according to the features of the irrigation system.Moreover,the experienced formulas of non-depositing critical velocity for muddy water delivery in low-pressure pipeline irrigation system were drawn according to the testing data.The anti-silt measures were proved efficiently by engineering application.Therefore,it has an important sense of generalizing low-pressure pipeline irrigation technology in irrigation zones as diverting water from sedimentladen river.
机译：低压管道的灌溉系统可显着节约用水，且成本低廉且管理方便。因此，在许多发达国家，节水灌溉技术是发展节水灌溉或重建工程时的一项定向技术措施。是导致低压管道灌溉技术发展的关键因素，在灌溉用水从含沙河水分流的灌溉地区不易推广。分析了管道淤积的根源，阐述了堵塞的类型。根据灌溉系统的特点，提出了防淤对策。此外，绘制了低压管道灌溉系统输泥水非沉积临界速度的经验公式。根据测试数据，工程师们有效地证明了防淤措施。因此，从灌水河中引水，在灌区推广低压管道灌溉技术具有重要意义。

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