中文摘要：

基于密实核理论,针对特定岩石条件,考虑滚刀在破岩过程中复杂的受力情况,将滚刀楔形刃破岩过程分为四个阶段：弹性变形阶段、挤压破碎阶段、密实核破碎阶段与卸载阶段,且认为在密实核破碎阶段,密实核处于静水压状态,静水压力增大,会使受力物体的体积缩小,但不会改变其形状。并提出了单滚刀多阶段受力预测模型。进而开展了单滚刀线性切割岩石试验研究,并与理论模型进行了对比。结果表明：预测模型与实验数据垂直力、侧向力和滚动力的误差分别在（8~18）k N,（2~5）k N和（0~3）k N;在此基础上对预测模型进行了系数修正,使其能够更加真实地模拟滚刀破岩的受力情况,为滚刀以及刀盘的设计提供技术支撑。

英文摘要：

Based on the dense nuclear theory, considering the complex stress of breaking rock on the disc cutter, the process of the disc cutter breaking rock was divided into four phases for specific rock conditions： elastic deformation phase , squeezing crushing phase, dense nuclear fiagmentation phase and the unloading phase, and considered in the phase of dense nucleus fragmentation, nucleus was under hydrostatic pressure, with the increasing of hydrostatic pressure, the volume of the object became smaller, but the shape wouldn＇t be changed. And the multi-stage force prediction model of single disc cutter was proposed. Furthermore, experimental studies were carried out, and the experimental data was compared with the theoretical model. The results show that： compared with the experimental data, the deviation of prediction model in vertical force, lateral force and the rolling force were respectively （8~18）kN, （2~5）kN and （0~3）kN; at las＇t, the prediction model was revised by correction coefficient to make it more realistic and reasonable , and to provide technical support for the cutter design