FRACTURE DAMAGE MECHANISM OF DISCONTINUOUS JOINTED ROCKMASS UNDER THE STATE OF COMPLEX STRESS AND ITS APPLICATION
复杂应力状态下断续节理岩体断裂损伤机理研究及其应用

Fracture and damage theory is used to study the mechanical mechanism of gradual destroying of discontinuous jointed rockmass during excavation and unloading. The damage evolution equations of discontinuous jointed rockmass under the state of compressionshearing and tensionshearing are derived and used to analyze movement and damage feature of surrounding rockmass of a mine during mining. The caculated results show good agreement with engineering practice, which is helpful to reasonably analzse the destroying process of surrounding rockmass in underground engineering.