在施工过程中没有中间漂移的双道的机械响应机制和参数优化
Junwu Chen1,2, Feng Huang3,4, Song Wang5,6
1School of Civil Engineering, Beijing Jiaotong University, Beiijing, 100044, China.
Scientific reports
|September 2, 2025
概括
在没有中间漂移的双道中挖掘次要道显著增加了前道变形和层应力. 优化挖掘方法和面部摇摆,例如12米的距离,可以减轻这些不良影响.
科学领域:
- 地质工程
- 道工程
- 土木工程
背景情况:
- 没有中间漂移的双道提供了建筑效率和成本优势.
- 挖掘相邻的道可能会造成现有道层的重大结构干扰和不稳定.
- 了解连续挖掘过程中的机械反应对于安全的道建设至关重要.
研究的目的:
- 在没有中间漂移的双道建设过程中调查结构机械反应和故障演变.
- 揭示二次道挖掘对前道应力机制的影响.
- 为了比较不同挖掘方法,镜头和面部偏移对结构应力的影响.
主要方法:
- 关于中国新马道项目的案例研究.
- 物理模型实验.
- 有限元模拟分析.
- 对挖掘参数进行比较分析.
主要成果:
- 周围的岩石变形遵循三个阶段的模式:快速增加,快速减少和缓慢增加.
- 第二次道挖掘增加了前道弧冠的沉积量25.56%.
- 右腰的腰部表层经历了最高的轴力和曲时刻,表明显著的应力度.
- 层裂主要发生在较弱的区域,如肩,冠和倒置.
结论:
- 挖掘方法 (左然后右) 和小型挖掘片段减少干扰和应力度.
- 道面之间12米的分层距离是控制沉积和塑料区域扩张的最佳方法.
- 这些发现为类似的道设计和建造提供了有价值的参数参考.
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