To estimate the energy storage and release performances of rock pillars in high stress and gain insights into the prevention and control of rockburst hazards from an energy aspect, several series of single-cyclic loading-unloading uniaxial compression tests with different stress levels were conducted on five types of rocks sampled in standard cylinders and prisms. The concepts of relative energy storage potential and ultimate energy storage potential were proposed to evaluate the energy storage performance of the two shaped specimens, and the energy release potential was determined using the residual elastic strain energy index. The results showed that, under similar loading conditions, the relative energy storage potential of rocks was insensitive to the specimen shape, whereas the ultimate energy storage potential and energy release potential were sensitive to both the specimen shape and rock type. Based on the lab results, a theoretical approach of assessing the rockburst (or instability) risk of isolated rock pillars subjected to high geostress was illustrated by estimating its current energy state and ultimate energy storage potential. Importantly, the residual elastic energy of an isolated pillar can also be estimated based on the lab results, according to which the number of supporting devices such as the energy-absorbing bolts needed for scientific and sufficient support of pillar rockburst was quantitatively estimated. This study provides a new method for estimating the desired number of energy-absorbing bolts during rockburst support in engineering practice.

为评估岩柱在高应力下的储能和释放性能，从能量角度深入了解岩爆灾害的防治，开展了5个不同应​​力水平的单循环加卸载单轴压缩试验。在标准圆柱体和棱柱体中取样的岩石类型。提出了相对储能势和极限储能势的概念来评价两种异型试件的储能性能，并利用残余弹性应变能指数确定了能量释放势。结果表明，在相似的加载条件下，岩石的相对储能势对试件形状不敏感，而最终的储能潜力和能量释放潜力对样本形状和岩石类型都很敏感。基于实验室结果，通过估计其当前能量状态和最终储能潜力，说明了评估高地应力下孤立岩柱岩爆（或失稳）风险的理论方法。重要的是，还可以根据实验室结果估算孤立柱的剩余弹性能，据此定量估算柱子岩爆科学充分支护所需的吸能锚杆等支护装置的数量。本研究为工程实践中岩爆支护中所需吸能锚杆数量的估算提供了一种新方法。