摘要
为解决黄河含沙水滴灌过滤粘粒不易去除的问题,采用对比试验方法,设置了竖直地埋管式(V)、水平地埋管式(L)、辐射井管式(R)、渗水井管式(S)4种非全流土壤排渗过滤装置,进行了非饱和土壤处理(V2、L2、R2)与饱和土壤处理(V1、L1、R1和S)条件下的黄河含沙水过滤性能试验。试验结果表明:V1、L1、R1处理比V2、L2、R2处理两次过滤的平均滤水量分别提高3.73%、9.52%和10.56%,平均滤水含沙量分别降低2.74%、3.95%和1.84%;S处理滤水量最大,L处理滤水含沙量最小。各处理稳渗滤水含沙量均小于0.3 kg/m^(3),大于0.1 mm且小于0.129 mm的颗粒仅占0.58%。通过滴灌试验验证,S、V、L处理灌水器的相对流量和均匀系数分别大于75%和80%,均满足滴灌使用。综合考虑,建议在实践应用中推荐渗水井管式(S)和水平地埋管式(L)非全流土壤排渗过滤装置,可以为引黄灌区高效节水灌溉的黄河高含沙水过滤提供技术支撑。
In order to solve the problem that the clay particles is not easy to remove in the drip irrigation filtration of yellow river sandy water,through the contrast test method,4 types of non-full flow soil drainage filtration devices,including vertical buried tube type(V),horizontal buried tube type(L),radiation well tube type(R)and seepage well tube type(S),were set,and the experiments on the filtration performance of yellow river sandy water under unsaturated soil treatment(V2,L2,R2)and saturated soil treatment(V1,L1,R1 and S)were carried out.The results showed that:the average filtration rate of V1,L1 and R1 treatment was 3.73%,9.52% and 10.56% higher than that of V2,L2 and R2 treatment,respectively,and the average sediment concentration was 2.74%,3.95% and 1.84% lower,respectively.S treatment had the maximum filtration water amount,while L treatment had the minimum sediment concentration.After each treatment reached stable infiltration,the average sand content of the filtered water was less than 0.3 kg/m^(3),and the particles greater than 0.1 mm and less than 0.129mm accounted for only 0.58%.Through the drip irrigation test,the relative flow rate and uniformity coefficient of S,V and L treatments were higher than 75%and 80%,respectively,which met the requirements of drip irrigation.After comprehensive consideration,it is suggested to recommend the seepage well tube type(S)and horizontal buried tube type(L)non-full flow soil seepage filtration device for practical application,which can provide technical support for the filtration of high sediment content water for efficient water-saving irrigation in the Yellow River irrigation area.
作者
王凯亮
田军仓
夏天
WANG Kai-liang;TIAN Jun-cang;XIA Tian(School of Civil and Hydraulic Engineering,Ningxia University,Yinchuan 750021,China;Ningxia Research Center of Technology on Water-saving Irrigation and Water Resources Regulation,Yinchuan 750021,China;Center of Engineering Research on Efficient Utilization of Water Resources in Modern Agriculture in Arid Regions(Ministry of Education),Yinchuan 750021,China)
出处
《节水灌溉》
北大核心
2021年第9期51-56,60,共7页
Water Saving Irrigation
基金
宁夏回族自治区重点研发计划重大项目“宁夏现代化生态灌区关键技术集成研究与示范”(2018BBF02022)
宁夏高等学校一流学科建设项目(NXYLXK2017A03、NXYLXK2021A03)。
关键词
滴灌堵塞
黄河含沙水
非全流过滤
非全流土壤排渗过滤
灌水器堵塞
过滤器
过滤装置
drip irrigation clogging
yellow river sandy water
non-full flow filtration
non-full flow soil drainage filtration
irrigator clogging
filter
filtration device
