Cutting, Wear and Replacement of Cutting Tools During Shield Tunneling

In the process of excavation, the cutting of the front soil is carried out by the cutter head tool, and the adaptability between the tool and the soil is very important. If the cutter head tool does not adapt to the soil, it will make the shield cutting slow, accelerate the tool wear, and directly affect the working efficiency and the progress of the process. At the same time, the rationality of cutterhead structure design and tool placement is also one of the main influencing factors of shield service life. Therefore, it is necessary to clarify the relevant types, arrangement methods, cutting mechanisms, wear types and causes of shield cutters, and analyze and improve the tool change technology to improve the efficiency of shield tunneling and tool change, and reduce the safety risks during construction.