河北平原开发地下水高潮中,涌现出一种新井型,叫做填料真空井。该井型是从手压真空并发展到机带真空井后,为进一步提高单井出水量,在采取增大孔径,回填砾料改进过滤结构,扩大进水面积等新工艺的基础上试验成功的。由于成井质量可靠,经济效益显著。 During the development of groundwater in Hebei Plain, a new type of well was developed, called a filler vacuum well. The well type is developed from hand pressure vacuum to vacuum belt with machine, in order to further improve the water output of single well, it is tested successfully on the basis of new technology such as increasing pore size, improving filtration structure by backfill gravel and expanding water inlet area . As a result of well-established quality, significant economic benefits.