对于完整岩石的压力依赖的莫尔-库伦剪切强度参数
Hao Li1, Leo Pel2, Zhenjiang You3,4,5
1Department of Mechanical Engineering, Eindhoven University of Technology, 5600 MB, Eindhoven, The Netherlands. haoli424@outlook.com.
Scientific reports
|July 29, 2024
概括
这项研究增强了莫尔-库伦标准的应力依赖摩擦角度和凝聚力 (SFC),以准确地建模岩石强度,从脆性到柔性状态. 新的SFC增强标准改善了对深度工程项目的预测.
科学领域:
- 地质技术工程 地质技术工程
- 岩石力学 岩石力学 岩石力学
- 材料科学 材料科学 材料科学
背景情况:
- 岩石强度对于工程结构设计和稳定性至关重要.
- 莫尔-库伦 (M-C) 标准被广泛使用,但在捕捉非线性岩石强度和关键状态方面存在局限性.
- 现有的模型可能会导致深度工程项目的设计不准确性.
研究的目的:
- 为M-C标准引入一种创新的取决于应力的摩擦角度和凝聚力 (SFC).
- 准确地捕捉非线性岩石强度响应从非关键到关键状态 (脆性到柔性区域).
- 开发一个解决传统M-C标准局限性的模型.
主要方法:
- 开发了一种新的方法,以在相应的压力状态下确定压力依赖的参数.
- 分析了摩擦角度和凝聚力的限制依赖性.
- 由应力依赖的摩擦角和凝聚力 (SFC) 模型得出并集成到M-C标准中.
主要成果:
- 用SFC增强的M-C标准准确地模拟了从脆性到柔性区域的整个非线性强度包裹.
- 使用了在较低的限制下从三轴测试中获得的参数.
- 使用三轴测试数据的验证证实了岩石强度特征的准确预测.
结论:
- 与传统的M-C标准相比,SFC增强的M-C标准提供了更准确的岩石强度表现.
- 这种增强模型适用于深度工程项目的设计和稳定性分析.
- 该研究成功地通过实验数据验证了该模型的预测能力.
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