使用YAI的双道之间的岩石柱的稳定性评估
Huijian Zhang1, Gongning Liu2, Weixiong Liu1
1Key Laboratory of Transportation Tunnel Engineering, Ministry of Education, School of Civil Engineering, Southwest Jiaotong University, Chengdu, 610031, China.
Scientific reports
|August 14, 2023
概括
双重道中的岩柱稳定性对于安全至关重要. 上下道配置提供了比左右布局更大的稳定性,特别是通过优化岩石柱厚度与道直径的比率.
科学领域:
- 地质技术工程 地质技术工程
- 道工程工程 道工程
- 土木工程 土木工程是指土木工程.
背景情况:
- 岩石柱的稳定性对于安全建造具有小空隙的双道至关重要.
- 从左向右转向上向下道布局的过渡带来了独特的稳定性挑战.
- 关于在这些不同的双道配置中比较岩石柱的稳定性,目前的研究有限.
研究的目的:
- 引入和应用收益率接近指数 (YAI) 来评估小空隙双道中的岩柱稳定性.
- 为了比较分析岩石柱的稳定性,在左-右与上-下双道配置.
- 为了研究侧压系数 (SPC),应力释放率 (SRR) 和岩柱厚度与道直径比率 (RPT/TD) 对稳定性的影响.
主要方法:
- 使用收益率方法指数 (YAI) 来评估岩石柱稳定性.
- 分析了不同侧压系数 (SPC) 的影响.
- 评估了不同压力释放率 (SRR) 的影响.
- 检查了岩石柱厚度对道直径比率 (RPT/TD) 的影响.
主要成果:
- 与在类似条件下的左右配置相比,上下道配置具有显著更高的岩石柱稳定性.
- 左右道中的岩石柱被认为是最脆弱的.
- 上下道对SPC更敏感,而左右道对SRR更敏感.
- 增加RPT/TD比提高稳定性在1/4到2/3.3的范围内.
结论:
- 在上下双道中的岩石柱的稳定性优于左右配置中的稳定性.
- 这些发现为稳定性评估和小型通道双道的设计提供了关键的参考.
- 优化 RPT/TD 是提高岩石柱稳定的有效策略.
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