| 摘要 |
PURPOSE: A vertical extraction system of landfill leachate is provided, which is characterized in that the leachate vertical exclusion system is resistant to subsidence of landfill land, compared with conventional leachate vertical exclusion system. Also, the leachate vertical exclusion system is resistant to deformation of system, or to partial friction force that is occurred when subsidence is happened. CONSTITUTION: A waste layer(20) is filled up above a soil layer(10) repeatedly. And pipes(31)(32) are pierced through to the soil layer(10) and the waste layer(20). Pipes(31)(32) are connected in type of slip joint, so, pipes(31)(32) absorb partial friction force that is occurred when subsidence is happened. A concrete bed(33) is installed above the soil layer(10) to hold up pipes(31)(32). The pipe(31), having smaller diameter than the pipe(32), is installed at a top soil layer, and a cap(34) is installed at a top of the pipe(31) to prevent escaping of landfill gas. |
