Bases on the location of these drains and the design objective,it analyzes the effectiveness of application,and gives evaluation on the role of drains and slope revetment drains in the protection of Laoyemiao-Jining Expressway and the drainage.

This paper mainly introduces the experience of success in reinforcing deep road graben slope by joint methods such as building protecting slope with pulp and stone pieces, supporting seeping grooves, jetting concrete to anchor, forming protection wall, etc.