为了研究滚刀刃宽、刀间距和贯入度等关键参数对滚刀破岩过程的影响规律，基于全尺度线性切削试验平台，使用CCS型盘形滚刀开展了不同参数条件下的花岗岩切削试验。使用13 mm和17 mm 2种刃宽的滚刀，在60、65、70、75、80 mm刀间距和0.5、1.0、2.0、3.0、3.5、4.0、4.5、5.0、6.0 mm贯入度条件下，直线切削单轴抗压强度约140 MPa的岩石，获取破岩法向力、滚动力等载荷数据，并计算各次切削试验的破岩比能。研究结果表明： 1）平均法向力和滚动力随刃宽、贯入度和刀间距的增大而增大，但增长速率有所不同； 2）刃宽和贯入度对平均破岩载荷的影响程度明显强于刀间距； 3）刃宽对平均法向力的影响程度强于对平均滚动力的影响程度； 4）对不同的刃宽和刀间距，破岩比能总体上随贯入度的增大先减小后增大，而刃宽的增大会引起破岩比能的增大。

In order to study the influences of the factors such as cutter width, cutter spacing and penetration on the rock breaking process, groups of rock breaking tests are conducted on a fullscale linear rock cutting machine. The experiments of granite cutting under different parameters are carried out with CCS (constant cross section) disc cutter. The rock with uniaxial compressive strength of about 140 MPa is cut straightly by disc cutters of 13 mm and 17 mm width under the conditions of 60 mm, 65 mm, 70 mm, 75 mm and 80 mm of cutter spacing and 0.5 mm, 1.0 mm, 2.0 mm, 3.0 mm, 3.5 mm, 4.0 mm, 4.5 mm, 5.0 mm and 6.0 mm of penetration. The load data of rock breaking such as normal force and rolling force are obtained, and rock cutting specific energy (SE) is calculated. The test results show that: (1) The average normal and rolling forces increase with the cutter width, but they increase differently. (2) The cutter width and penetration have stronger impacts than the cutter spacing on the average rock breaking forces. (3) The cutter width has stronger impact on the average normal force than the average rolling force. (4) The specific energy decreases with the penetration first and then increases under the conditions of different cutter widths and cutter spacings, while the specific energy increases with the cutter width.