1results about How to "Reduce outbound volume" patented technology

This invention discloses a method for treating abandoned culverts, comprising: sealing the abandoned culvert in sections; pre-burying a delivery pipe and a grouting pipe in each section of the culvert, with one end of the delivery pipe located at the lower part of the section and one end of the grouting pipe located at the upper part of the section; injecting foamed lightweight soil into the section of the culvert through the delivery pipe, so that the foamed lightweight soil fills the section of the culvert; after the foamed lightweight soil in the section of the culvert has initially set, injecting cement slurry into the section of the culvert under high pressure through the grouting pipe, the cement slurry penetrating and reinforcing the foamed lightweight soil to form a composite reinforcement layer. This invention solves the problems of water and soil pollution, high treatment costs, and high settlement risks associated with traditional culvert demolition during urban road renovation and upgrading.