Constitutive equations for crack-weakened rock mass and SIF under confining pressure unloading with crack interaction effect were determined, and the numerical results were given.

• 文中推导了考虑裂隙间的相互作用情况下裂隙岩体围压卸荷过程的应力应变关系及应力强度因子表达式，且进行了数值计算。