Drainage Device for Slope Project with Backfill Soil and Construction Method
In order to deeply study the drainage scheme for water-rich soil layer of the original slope body in the backfill slope project,relying on the slope drainage project of Zhangshang Expressway,a backfill slope drainage device and construction method are proposed:the drainage device consists of drainage pipe,drainage prefabricated parts and connecting parts;drainage holes are set on the side wall of the drainage pipe of the rock-soil layer of the original slope body,and the pipe body and end are wrapped with the antifiltering geotextile;after the original surface treatment of the slope body,a After the surface treatment of the original slope,backfill the soil layer on the original slope and compact it.Excavate the slope body drainage hole,and install the drainage pipe,prefabricated connectors and prefabricated parts in turn;backfill soil layer drainage prefabricated parts are made of iron ore tailing sand,water,and cementitious materials according to a certain ratio.The drainage device designed in this paper has a good effect of lowering and draining,and the use of mine solid waste materials to make drainage prefabricated parts instead of the commonly used PVC drainage pipe has the advantages of low carbon and long service period.The results of the study can provide reference for slope drainage management under the same conditions.