A new damage model for rock burst in hard rocks during deep mining

深部开采硬岩岩爆损伤新模型

• 批准号: LP150100539
• 负责人: A/Prof Murat Karakus
• 金额: $ 12.66万
• 依托单位: The University of Adelaide
• 依托单位国家: 澳大利亚
• 项目类别: Linkage Projects
• 财政年份: 2016
• 资助国家: 澳大利亚
• 起止时间: 2016-02-01 至 2019-02-28
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/LP150100539
• 关键词: new; damage; model; rock; burst

This project seeks to develop a new model to predict incipient rock burst in deep mines. Violent sudden energy released during dynamic brittle failure of rocks can kill people and cause serious damages to mining infrastructures. The project aims to investigate formation of micro-fractures on the brittle shear zones during dynamic brittle failure of pristine rocks with a unique experimental methodology under high-pressure-temperature condition. It is anticipated that a new micromechanics-based damage model for brittle rocks will be developed from this. Implementation of the new coupled thermo-mechanical damage model into a finite element should result in realistic simulation of deep mining operations to identify rock-burst prone areas and allow mining managers to avoid potential hazards.

本项目旨在开发一种新的模型来预测深部矿井中的早期岩爆。岩石动态脆性破坏过程中释放出的剧烈突发性能量会造成人员伤亡和矿山基础设施的严重破坏。该项目旨在通过独特的实验方法，在高温高压条件下研究原始岩石动态脆性破坏过程中脆性剪切带上微裂缝的形成。可以预见，一个新的细观力学为基础的脆性岩石损伤模型将发展。将新的热-机械耦合损伤模型应用到有限元中，应能对深部采矿作业进行现实模拟，以确定岩爆易发区，使采矿管理人员能够避免潜在的危害。