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砾石过滤器是世界各国在松散或半胶结的含水层中最常见的过滤器类型之一。我国三种现行国标《供水管井工程施工及验收规范》GBJ13—66、《室外给水设计规范》TJ13—74及《供水水文地质勘察规范》TJ27—78对砾石过滤器管井填砾规格的规定基本上是参照苏联中Ф·C·伯雅林契夫提出的意见制订的。三十多年来的生产实践证明:这一规定对砂土类含水层中的管井是适用的,但对中、细、粉砂较多的碎石土类用其确定填砾规格往往偏大,不能保证成井质量,而且规定过于繁琐,使用不便。根据国内专业
Gravel filters are one of the most common types of filters in loose or semi-consolidated aquifers around the world. The specifications of the three current national standards for water supply pipe well construction and acceptance GBJ13-66, Design Code for Outdoor Water Supply TJ13-74 and Water Supply Hydrology Geological Survey Specification TJ27-78 are basically It was formulated with reference to the opinions put forward by the Soviet Lieutenant C. Boyarinchev. The production practice in more than 30 years has proved that this provision is applicable to tube wells in sand-type aquifers, but the size of gravel soils with medium, fine, silty sand and more aggregates is often larger The quality of wells cannot be guaranteed, and the regulations are too complicated and inconvenient to use. According to domestic professional