Test of subcritical crack growth and fracture toughness under water-rock interaction in three types of rocks
作者： Rui-qing Hao , Jiang-teng Li , Ping Cao , Bo Liu , Jun Liao
DOI: 10.1007/S11771-015-2568-9
关键词:
摘要: The subcritical crack growth and fracture toughness in peridotite, lherzolite amphibolite were investigated with double torsion test. results show that water-rock interaction has a significant influence on growth. With interaction, the velocity increases, while stress intensity factor declines, which illustrates can decrease strength of rocks accelerate Based Charlse theory Hilling & theory, test data analyzed by regression correlation coefficients all higher than 0.7, shows is significant. This both theories explain tests very well. Therefore, it believed attributes to breaking chemical bond, caused combined effect tensile reaction between material at tip corrosive agent. Meanwhile, vital toughness. samples under atmospheric environment immersed water. And larger peridotite lherzolite.
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