在有粉砂层的水文水井里,用传统的填砾法成井,成本高,效果差,而用贴砾水管成井可获得较好的经济技术效果。这种水管是在有花眼的钢管四周,用粘合剂贴合一层小砾石,形成一种钢衬—砾石一体的过滤管,它的成井工艺简单,可减小孔径尺寸,且水质有害成分能控制在国家的标准之内。 In wells with silty sand, the traditional method of filling the wells is high cost and poor results, and the use of gravel pipes to obtain good economic and technical results. This kind of water pipe is surrounded by Huanyan steel pipe, and it is coated with a small gravel layer with an adhesive to form a steel lined-gravel integrated filter pipe. Its well-forming process is simple, the aperture size can be reduced, and the harmful components of water quality can be reduced. Can be controlled within the national standards.