中文摘要：

矿山深部岩体具有由脆性向延性转化的特性,围压不同峰后特性也不同。针对深部的脆延转化机理进行了深入研究,得到同一深度岩石在不同围压的应力-应变变化规律,在此基础上确定了岩石脆-延转换的临界深度,研究结果为矿山深部开采提供了依据。

英文摘要：

The deep rock mass has the characteristic of brittle extension transformation,and different confining pressures show different peaks. Thus,a research on the mechanism of brittle extension transformation in deep rock mass was carried out,which obtained the stress-strain changing rules of different rocks with the same depth under various confining pressures. On this basis,the critical depth of brittle extension transformation was determined,which provided reference for deep mining.