在复杂的现场应力下,在异型层内的道路周围岩石中的塑料区的演变
Yunjiang Sun1,2, Shuai Guo3, Yapeng Wang3
1School of Mechanics and Civil Engineering, China University of Mining & Technology, Beijing, 100083, China. sun.yunjiang@163.com.
Scientific reports
|January 22, 2026
概括
深度采矿塑料区受到岩层异构性而非异构性的显著影响. 新模型揭示了关节配置和应力如何影响塑料区域形状和道路变形.
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
- 采矿工程 采矿工程 采矿工程
背景情况:
- 深度采矿面临着复杂的高现场应力和岩石异构性,这是由于床层平面和关节.
- 现有的塑料区域模型经常假设同otropic 层,偏离现实世界的工程条件.
研究的目的:
- 通过使用改进的异性异性莫尔-库伦失败标准,在异性异性条件下的塑料区域获得分析溶液.
- 通过理论和数值模拟,研究床铺平面和接头对塑料区域的影响.
- 分析应力和塑性区域在不同现场应力和关节配置下的演变.
主要方法:
- 开发了一个基于改进的异构性莫尔-库伦失败标准的分析解决方案.
- 进行了异构和异构理论模型之间的比较分析.
- 进行了数值模拟,以研究不同关节配置 (单组,多组直角,多组非直角) 和侧面压力系数下的应力和塑性区域演变.
- 通过实地观察道路变形和异构层中故障的模型验证模型.
主要成果:
- 不同类型,包括床铺平面和关节,显著影响塑料区.
- 塑料区域的形状随着关节配置而有很大变化:对于单套关节,带状,对于多关节道路,随着俯冲角度的增加,六角到"X"形状.
- 在增加侧面压力系数的情况下,直角连接层中的塑料区域通过不同的形状 ('蝶', '水平线', '交叉', '垂直线', 'X') 演变.
- 现场案例研究表明,塑性区域的延伸与关节方向保持一致,导致不对称的变形.
结论:
- 衍生出的异构型模型准确地预测了深度采矿中的塑料区行为.
- 联合定位和现场应力条件是决定塑料区特征和道路稳定的关键因素.
- 该模型的可靠性得到了数字模拟和现场测量之间的密切一致的证实,突出了其用于分析异型层的实际适用性.
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