滤料塞式过滤器的研制与成井应用刘德邻，刘建华，孙雪峰，张文亮（中国农科院农田灌溉研究所）１引言滤料设计与选用不当和由此而采取缠丝滤水管或多孔混凝土滤水管包棕的做法甚为普遍。其主要弊病是棕网孔隙极易被入井携砂水流中的粉细砂粒堵塞，而导致井的出水效率低而... Development and application of filter plug filter Liu Dezheng, Liu Jianhua, Sun Xuefeng, Zhang Wenliang (Institute of Farmland Irrigation, Chinese Academy of Agricultural Sciences) 1 Introduction The improper design and selection of filter media and the adoption of entangled wire strainer or porous concrete filter Water pipe package brown is very common practice. Its main disadvantage is that the brown net pores are easily clogged with the fine sand particles in the sand carried by the well, resulting in low effluent efficiency of the well ...