Cutterhead Design Of E.P.B. Shield Machine In Sand And Gravel Ground

Earth Pressure Balanced Shield Machine is widely used in the world. Its'cutterhead is one of major parts of E.P.B. Shield Machine. Sand and Gravel ground is one kind of complicated ground and is typical.The following studies were accomplished in the paper for discovering the method of E.P.B. Shield Machine design.1. The basis process of E.P.B. shield machine cutterhead design was summarized in the paper. The basis process was explained in details.2. The characteristics of sand and gravel ground was analyzed. The cutterhead of E.P.B. shield machine in the ground is forced by water and soil. The stress analysis was been made. The torque and thrust force on cutterhead were analyzed. The Calculation of above data was researched in the paper.3. Driven type design of cutterhead, structure design, cutter arrangement on cutterhead, cutter abrasion calculation, and anti-abrasion of cutterhead were researched in the paper. All above are basis content of cutterhead design of E.P.B. shield machine.4. Putting the design process and the detail content about cutterhead design into practice and researching the application result were parts of the paper. The result of application was analyzed in the terms of cutterhead abrasion, cutter abrasion, etc.The design process is proved by the excavation of the actual project. The cutterhead excavated 1526m-long tunnel in the sand and gravel ground without changing cutters. The similar cutterhead design will benefit from the design practice.