从声波速度预测岩石质量的机械性能,使用Hoek-Brown受约束的组件参数模型
Shishu Zhang1, Jin Liao2, Congyan Ran1
1POWERCHINA Chengdu Engineering Corporation Limited, Chengdu, Sichuan 610072, China.
Ultrasonics
|October 3, 2025
概括
这项研究引入了一种新的声学-机械相关模型,用于定量岩石质量评估. 该模型准确地预测了剪切强度和变形参数,提高了地质工程的效率.
科学领域:
- 地质技术工程 地质技术工程
- 岩石机械学 岩石机械学
- 声学测试试验 声学测试试验
背景情况:
- 传统的声波测试只提供了对岩石质量的机械性质的定性见解.
- 对于定量参数值,需要进行额外的实验室或现场机械测试,这阻碍了现场效率.
- 这种双重测试方法限制了工程调查中的及时决策.
研究的目的:
- 为岩石质量评估开发一个定量声学-机械相关模型.
- 克服传统的定性声学测试方法的局限性.
- 为了在现场快速准确地确定关键岩石质量参数.
主要方法:
- 在岩石质量上进行实验室和实地实验.
- 应用了修改后的威利方程来分析孔隙性,矿物成分和声波速度之间的关系.
- 使用了多项式回归建模和Hoek-Brown受约束的组件参数相关模型.
主要成果:
- 开发的模型准确地预测了剪切强度指数 (内部摩擦角度,凝聚力) 和变形参数 (弹性模量).
- 在内部摩擦角度 (0.93-0.94),凝聚力 (0.97-0.98) 和弹性模量 (0.94-0.95) 实现了高的确定系数 (R2).
- 内部摩擦角度对声波变化的灵敏度最高,紧随其后的是凝聚力和弹性模量.
结论:
- 声学机械相关模型为快速定量岩石质量评估提供了一种新的方法.
- 该模型增强了在道支设计,斜坡稳定性评估和地质工程方面的动态决策.
- 这一框架为全面评估多个岩石质量参数提供了可靠的方法.
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