温度对岩石动态断裂韧度的影响研究  

The Effect of Temperature for Dynamic Fracture Toughness of Rock

作　　者：饶岳成[1] 宫能平[1] 

机构地区：[1]安徽理工大学,安徽淮南232001

出　　处：《四川建材》2013年第5期96-97,共2页Sichuan Building Materials

摘　　要：根据Central Cracked Circular Disk-Split Hopkinson Pressure Bar(CCCD-SHPB)测试原理,采用平台巴西圆盘开展温度对岩石类材料动态断裂性能影响的实验研究。实验中控制加载速率基本一致,仅改变试件测试的温度,实现了岩石材料在同一加载速率、不同温度下的动态断裂实验,进而开展岩石材料动态断裂韧度的温度相关性研究。实验结果表明,当温度处于8～100℃时,动态断裂韧度随着温度的升高而逐步下降,近似呈线性关系。Based on the principles of Central Cracked Circular Disk - Split Hopkinson Pressure Bar （ CCCD - SHPB） test, platform Brazilian disc was used to study temperature effect on rock fracture properties. In the experimental by controlling the pulse load, the testing temperature is the only change conditions, realized the rock material at the same loading rate, dynamic fracture experiment of different temperature, and then to carry out the dynamic fracture toughness of rock material temperature correlation studies. Test results show that the temperature is 8℃ to 100℃, the dynamic fracture toughness increased with the temperature gradually decreased, approximate linear relationship.

关 键 词：岩石断裂韧度 SHPB系统 温度 

分 类 号：TD801[矿业工程—矿山开采]