引黄灌区高含沙水农田非全流过滤试验研究  

Experimental Research on the Non-full Flow Filtration of High Sandy Water Farmland in the Yellow River Irrigation District

作　　者：明特 田军仓[1,2,3] MING Te;TIAN Jun-cang(College 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 Agricultural in Arid Regions, Yinchuan 750021, China)

机构地区：[1]宁夏大学土木与水利工程学院,银川750021 [2]宁夏节水灌溉与水资源调控工程技术研究中心,银川750021 [3]旱区现代农业水资源高效利用教育部工程研究中心,银川750021

出　　处：《中国农村水利水电》2020年第3期10-17,共8页China Rural Water and Hydropower

基　　金：宁夏高等学校一流学科建设项目(NXYLXK2017A03);教育部“长江学者和创新团队发展计划”创新团队基金资助项目(IRT1067);宁夏回族自治区重点研发计划重大(重点)项目(2018BEG02009);宁夏回族自治区“西部人才高地行动计划”项目。

摘　　要：针对引黄灌区引黄水含沙量大的特点不适用于传统的节水灌溉方式的问题,对唐徕渠引黄含沙水进行过滤研究。通过试验对比的方法,采用渗水井过滤式S、地埋水平过滤式L、地埋竖直过滤式V、地埋竖直+水平过滤式R 4个处理方案,进行滤水试验。试验结果表明:①无纺土工织布具有良好的拦沙效果,且其规格越高拦沙效果越明显。②单位时间、单位长度滤出水流量由高到低依次为:S>R>L>V,分别为0.1376、0.0311、0.0227、0.0156 m^3/(h·m),由此可知渗水井过滤式(S)为最优方案。③当R、V、L三组试验进行到50 h,S组进行到70 h时,滤出水中的含沙量均低于0.4 kg/m^3,最大泥沙粒径为0.112mm,且粒径大于0.1mm的仅占0.077%,水质能够满足滴灌要求。④经过大田滤水试验,引黄灌区非全流过滤含沙水研究思路可行,具有一定的科学指导意义。In this paper,the characteristics of large water-bearing water in the Yellow River water diversion area are not applicable to the traditional water-saving irrigation method,and the filtration study of the Yellow River sandy water in Tanglai Canal is carried out.Through the test comparison method,the water filtration test is carried out by using four treatment schemes:seepage well S,buried horizontal filter L,buried vertical filter V,buried vertical+horizontal filter R.The test results show that:①The needle-punched nonwoven fabric has a good sand-blocking effect,and the higher the non-woven fabric specification,the more obvious the sand-blocking effect.②The flow rate of filtered water per unit time and unit length from high to low is:S>R>L>V,respectively 0.1376,0.0311,0.0227,0.0156 m^3/(h·m),which shows that the seepage well(S)is the optimal solution.③When the R,V,and L groups are tested for 50 h and the S group is for 70 h,the sediment concentration in the filtered water is less than 0.4 kg/m^3,and the maximum sediment particle size is 0.112 mm.Only 0.077%of the larger than 0.1 mm,the water quality can meet the drip irrigation requirements.④After the farmland water filtration test,the research idea of non-full flow filtration of sandy water in the Yellow River Irrigation District is feasible and has certain scientific guiding significance.

关 键 词：引黄灌区 含沙水 非全流过滤 

分 类 号：TV93[水利工程—水利水电工程] S273[农业科学—农业水土工程]