软土在宁波各地分布很广,特别在滨海地区更常遇见。软土的特点是含水量大、压缩性高、强度小及透水性低。在其上面筑坝,一般都必须进行处理,才能保证坝的稳定。砂井就是针对软土低透水性的不利工程性质,采取增加排水途径、缩短排水距离来加速软土固结,从而促进强度增长、满足坝基稳定要求,这是一种有效的处理软土地基方法。 Soft soil is widely distributed throughout Ningbo and is more commonly encountered in coastal areas. Soft soil is characterized by large water content, high compressibility, low strength, and low water permeability. In order to ensure the stability of the dam, dams must be treated. Sand wells are for the disadvantageous engineering properties of soft soil with low water permeability. It is an effective method to deal with soft soil foundations by increasing the drainage path and shortening the drainage distance to accelerate the consolidation of soft soil, thereby promoting strength growth and meeting the stabilization requirements of dam foundations. .