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利用伺服机对大理岩进行了高围压及高围压高水压岩石的卸荷力学试验。基于试验结果,研究了岩样卸围压的变形破坏及其能量特征。结果表明,大理岩峰前卸荷比峰后卸荷表现出更大的脆性;孔隙水压力加速了岩石的脆性破裂,降低了岩石的强度;高围压情况下卸荷比低围压卸荷更容易破坏。
The unloading test of marble with high confining pressure and high confining pressure and high hydraulic pressure was carried out by servo machine. Based on the experimental results, the deformation and failure of the unloading confining pressure and its energy characteristics are studied. The results show that the unloading before marble peak shows more brittleness than unloading after peak; the pore water pressure accelerates the brittle fracture of rock and reduces the strength of rock; the unloading ratio under high confining pressure is lower than that under confining pressure Easier to destroy.