宁波市在首创用江河湖海淤泥二级脱水制砖新工艺的重大突破以后,又在1987年采用页岩制砖取得成功。宁波市鄞县集士港砖瓦厂,由于泥源困难,企业经营很不景气。1985年当地在农田基本建设高潮时,附近农民利用望春山的碎石铺机耕路,不久发现铺路的页岩碎石经风吹雨打,常常风化成泥,而且有很强的粘结力。经浙江第五地质大队技术鉴定,页岩属“凝灰泥质粉砂岩”,其理化成分符合制砖工艺要求。望春山蕴藏页岩400万立方米,可供该厂使用几十年。目前泥源困难已迎刃而解,已用页岩 After a major breakthrough in the new process of making bricks from rivers, seas, and muds using two-stage dewatering bricks in Ningbo, the city also succeeded in using shale brick making in 1987. Ningbo Jixian Jishigang brick and tile factory, due to the difficulty of mud source, the business operation is very sluggish. In 1985, when the local farmland construction boom reached, nearby farmers used the crushed stone pavers of Wangchun Mountain to cultivate roads. It was soon discovered that the paving stones in the shale rock were often weathered into mud and had strong adhesion. According to the technical appraisal of Zhejiang Fifth Geological Brigade, the shale is a “stucco silty sandstone,” and its physicochemical composition conforms to the requirements of the brick making process. Wang Chunshan reserves 4 million cubic meters of shale and can be used by the plant for several decades. At present, the difficulty of mud source has been solved and shale has been used.