评估RMR和Q系统之间的关系,以改善断层岩石和弱岩石的分类
Jun-Sik Park1, Young-Woo Go2, Tae-Min Oh3
1Civil & Environmental Engineering, Pusan National University, Busan, Republic of Korea.
Scientific reports
|May 16, 2025
概括
新的方程改善了在断层和弱区域的道的岩石质量分类. 这提高了道挖掘和支持设计可靠性,特别是在复杂的地质环境中.
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
- 挖掘道是为了挖掘道.
背景情况:
- 岩石质量分类系统 (如RMR,Q-System) 对于道设计至关重要.
- 现有的RMR-Q相关性往往基于完整的岩石,对于断层区域可能不准确.
- 精确的分类在地质复杂的地区至关重要,例如韩国的乌尔山和 Gyeongju 地区.
研究的目的:
- 开发RMR和Q-System之间的新网站特定的相关方程,用于缺陷和弱岩石质量.
- 在复杂的地质条件下解决现有的一般化RMR-Q相关性的局限性.
- 为了提高道支设计的岩石质量分类的可靠性.
主要方法:
- 利用了来自韩国乌尔山和 Gyeongju 的道挖掘现场的地质调查数据.
- 进行回归分析以建立新的相关方程.
- 验证了新方程对于断层和弱岩石条件的准确性.
主要成果:
- 对于断层岩石 (R2 = 0.65) 开发了方程RMR = 2.2lnQ + 22.4.
- 开发了弱岩石 (R2 = 0.48) 的方程RMR = 4.5lnQ + 40.9.
- 证明现有的通用方程可能低估了故障区的支持需求.
结论:
- 新的特定地点方程为缺陷和弱岩石提供了更准确的岩石质量分类.
- 改进的分类提高了道挖掘的可靠性,并支持设计策略.
- 这些发现特别适用于在地质复杂环境和关键基础设施附近的道挖掘.
相关概念视频
01:15Routh-Hurwitz Criterion I
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Consider an electrical power grid, where stability is essential to prevent blackouts. The Routh-Hurwitz criterion is a valuable tool for assessing system stability under varying load conditions or faults. By analyzing the closed-loop transfer function, the Routh-Hurwitz criterion helps determine whether the system remains stable.
To apply the Routh-Hurwitz criterion, a Routh table is constructed. The table's rows are labeled with powers of the complex frequency variable s, starting from the...
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Applying equilibrium conditions to the QR segment establishes that the internal shearing forces within the...
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01:16Response Surface Methodology
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01:19Routh-Hurwitz Criterion II
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In the application of the Routh-Hurwitz criterion, two specific scenarios can arise that complicate stability analysis.
The first scenario occurs when a singular zero appears in the first column of the Routh table. This situation creates a division by zero issues. To resolve this, a small positive or negative number, denoted as epsilon (∈), is substituted for the zero. The stability analysis proceeds by assuming a sign for ∈. If ∈ is positive, any sign change in the first...
The first scenario occurs when a singular zero appears in the first column of the Routh table. This situation creates a division by zero issues. To resolve this, a small positive or negative number, denoted as epsilon (∈), is substituted for the zero. The stability analysis proceeds by assuming a sign for ∈. If ∈ is positive, any sign change in the first...
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