Study on Fracture Characteristics of Mode II Fractured Rocks Under Different Heat Treatments

• DOI: 10.1111/ffe.14630
• Publication Date: 2025-03-27T09:21:15Z
• Authors: Leijun Ma; Lei Zhou; Zheming Zhu; Haohan Wang; Xin Shui; Bang Liu

ABSTRACT In vigorously developing geothermal projects, in order to improve mining efficiency, it is necessary explore the mechanism of rock failure high‐temperature environments. This study conducted compression experiments on pure type II fractured rocks subjected heat treatment at different temperatures. The relationships between fracture toughness, crack propagation velocity, and energy with temperature were explored. By comparing paths initiation angles before after aggregation temperatures, can be found that granite more prone intergranular high According relationship rate, was velocity cannot used characterize energy. strain amplitudes analyzed using DIC technology, maximum value peak time positively correlated temperature, a larger variation amplitude.