| In recent years, people gradually begin to pay close attention to the study of amount of irrigation water equipment and technology. With the development of national economy and the improvement of ecological environment consciousness, the demand for water is increasing. Therefore, effectively monitoring the water resources has become more and more urgent, also more high accuracy requirements is necessary. So the supplying of water facilities, and the price is already very urgent task.In this paper, through a combination of JiangDu zone, GaoYou area, the actual situation of YiZheng area irrigation corporation in Yangzhou city, Jiangsu province, collecting water irrigation amount of existing facilities and equipment related information, its performance, accuracy, convenience and adaptability theory analysis, choose suitable for irrigation equipment, and from the application on irrigation water use coefficient for validation. The main conclusions are as follows:1、Opening the door to generalize Irrigation type, select the appropriate amount of water for its equipment, and targeted for certain hydraulic design;2、The actual amount of irrigated water measurement, the measured data are processed with the theoretical values calculated results are compared relative error rate, there by to analyze its accuracy; by comparing the amount of existing equipment Irrigation water analys is. We reached the following conclusions:Gravity irrigation area measurement experiment, the cylindrical tank with a direct-reading Surveying amount of water head increases, increased accuracy, small head under the water, the accuracy is not high; higher long-throated flume precision, and in a stable but its construction complex, demanding size, but also more complicated calculations; precision simple threshold of the amount of water in general, and with the increase of Surveying water gradually decreased, but higher construction requirements it fixed channel slope; precision weir generally triangular cross section; high-volume water tank venturi precision, low head loss, simple structure, easy construction and management, strong anti-interference ability, easy observation. Over all accuracy aspect, the price, the degree of difficulty of construction, adaptability to compare the recommended option Venturi flume in irrigation area in promotion efforts, although Venturi flume higher price comparison, but the over all accuracy, construction, operation and maintenance to look, it is the most suitable amount of water equipment.Lift irrigation district, we recommend selecting thin wall weir promotion. Among them, the large flow channels apply thin-walled rectangular weir, a small flow channels to apply thin-walled triangular weirs, which have high accuracy flow measurement, easy construction, calculation and simple.3. After selecting a device, based on the amount of water, which is incorporated calculation Irrigation District irrigation water efficiency in the water quantity measurement work, with increasing water volume measurement accuracy, the choice of measure to improve end to end analysis, calculation precision irrigation water efficiency of irrigation districts has been greatly improved. |
