Heat Conduction Model of TBM Disc Cutter Cutting Temperature and Its Solution

Disc cutter is Full face rock tunnel boring machine (TBM) important rock breaking tool, cutting heat generation has an important influence on cutter life, disc cutter cutting temperature characteristic research be imperative. Based on heat conduction theory to establish disc cutter cutting temperature heat conduction model, and derive its solution; analyze influence on disc cutter cutting temperature factors, the disc cutter cutting temperature follow penetration and disc cutter velocity and rock strength increases to rise, follow the time factor increases to rise until stabilization. By TB880E cutterhead as example to research disc cutter cutting temperature distribution characteristics on the cutterhead, the more closed to the cutterhead edge, the disc cutter cutting temperature is higher, it’s the certain related to the mounting radius and the cutter spacing, and have a certain guiding significance for the cooling pipes reasonable arrangement and disc cutter layout design on the cutterhead.