砀山县近年来陆续新打小口井达200限,每井造价120～160元,可灌农田10亩,为缺井、少井区和经济作物区发展灌溉探索了一条快而省的路子。 1984年春,该县水利局试打成功了一种自吸真空小口井。成井后配用四马力自吸喷灌泵抽水,单井出水量每小时可有15立方米。经试验,连续抽水24小时动水位稳定,影响半径50米。这种小口井主要布置在大机井控制不到的地方,用微型钻机 Dangshan County in recent years one after another to fight a small mouth up to 200 new wells, the cost of each well 120 to 160 yuan, 10 acres of irrigated farmland, lack of wells, Shaojing and economic development of cropland to explore a fast and economical way. The spring of 1984, the County Water Conservancy Bureau successfully tested a self-priming vacuum small wells. After the well matched with four horsepower self-priming irrigation pump pumping, single well water output per hour can have 15 cubic meters. After testing, continuous pumping 24 hours dynamic water level stability, the impact radius of 50 meters. This kind of small well is mainly arranged in the place that can not be controlled by the big well, with a mini drill