对梁型试件进行试验研究得到了岩石与混凝土 - 复合型界面裂缝的临界断裂曲线方程 ;并对三点弯曲梁测出荷载—位移全曲线 ,计算出断裂能 GF 。 The critical fracture curves of rock and concrete - composite interface cracks were obtained through the experimental study on the beam specimens. The full load - displacement curve of the three - point bending beam was measured and the fracture energy GF was calculated.