不同热冲击过程花岗岩I型和Ⅱ型断裂特性研究
范晓冬,李响,陶明,尹土兵,李夕兵

Study on Mode and Mode Fracture Characteristics of Granite Under Different Thermal Shock Process
Xiaodong FAN,Xiang LI,Ming TAO,Tubing YIN,Xibing LI
表1 不同程度热冲击后花岗岩物理力学性质
Table 1 Physical and mechanical properties of granite after different degrees of thermal shock
试样温度/℃制冷液温度/℃干密度/(kg·m-3孔隙率/%纵波波速/(m·s-1Ⅰ型断裂韧度/(MPa·m0.5Ⅱ型断裂韧度/(MPa·m0.5
25-2 638.140.6644 272.88--
200-202 634.380.6964 059.680.9731.418
202 638.090.6564 331.961.0201.438
602 642.630.6034 557.401.0701.449
400-202 616.871.3132 802.470.4040.586
202 621.391.2882 877.780.4240.709
602 625.661.2682 935.610.4510.772
600-202 547.113.7761 461.490.0740.159
202 549.223.7521 481.300.0800.160
602 552.393.7351 504.760.0860.161