安徽淮北平原节水灌溉机井井水泥砂控制技术研究

Study on cement sand control technology for water saving irrigation wells in Huaibei plain of Anhui

针对安徽淮北平原浅层地下水不同富水性分区的含水层组岩性、厚度等水文地质特征,分组布设实验节水灌溉机井群,采用无砂混凝土井管,选择不同的井径、钻孔直径、滤料类型、填滤厚度、洗井历时、流量等直接影响井水泥砂含量的因子,进行组合实验研究,探讨与归纳了该区域节水灌溉机井井水泥砂含量控制技术,给出了相应的节水灌溉机井井水泥砂含量控制指标。

Based on the hydrogeological characteristics of the aquifer lithology and thickness of shallow water in different regions of the Huaibei Plain in Anhui Province,experimental water-saving irrigation machine wells were grouped and sandless concrete well pipes were used to select different borehole diameters and borehole diameters. Factors such as filter type,filling thickness,well clearance duration,flow rate and other factors that directly affect the cement sand content in the well,combined experimental studies,explored and summarized the cement sand content control technology for well water saving irrigation wells in the region,and gave corresponding Water saving irrigation well well cement sand content control index.