在FLAC3D中改进基结构单元,并将其应用于110施工方法
Zhigang Meng1, Jiyuan Xu2, Huanhuan Li3
1School of Civil Engineering and Architecture, NingboTech University, Qianhu South Road, Ningbo, 315100, China.
Scientific reports
|March 5, 2025
概括
这项研究开发了FLAC3D中结构的新非线性模型,改进了大变形和强度衰变的模拟. 改进的模型准确地预测了行为,并显示了具有负波桑的110挖矿方法.
科学领域:
- 地质技术工程 地质技术工程
- 数字模拟 数字模拟
- 岩石力学 岩石力学 岩石力学
背景情况:
- 由于FLAC3D的弹性假设限制了对的大量变形和强度衰减的模拟.
- 准确的模拟行为对于分析复杂的地质条件至关重要.
研究的目的:
- 通过开发结构的非线性收模型来增强FLAC3D.
- 为了提高模拟准确度的行为,特别是在大的变形.
- 使用增强模型,比较110和121采矿方法的有效性.
主要方法:
- 开发了结构的非线性收模型.
- 使用Poisson比率 (PR) 和负Poisson比率 (NPR) 的数值拉出测试来验证模型.
- 应用该模型来比较110和121采矿方法下的应力分布.
主要成果:
- 改进后的模型准确地预测了PR和NPR的变形,轴向力和故障条件.
- 与121方法相比,110采矿方法的结果通常是较低的峰值应力.
- 在两种采矿方法之间观察到剪切和垂直应力方面的显著差异,特别是对于周围的岩石质量.
结论:
- 开发的非线性模型增强了FLAC3D模拟行为的能力,特别是在大变形的情况下.
- 负波桑比率 (NPR) 在优化周围岩石压力分布方面发挥着关键作用.
- 110挖矿方法在管理应力分布方面比121方法具有优势,得到了新的模拟策略的支持.
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