挖掘方法优化和机械反应研究浅埋超大段道:江的一个案例研究
Yunteng Chen1, Xiaoliang Geng2, Jianjun Li2
1Shaoxing Communications Investment Group Co., Ltd., Shaoxing, 312000, China.
Scientific reports
|March 16, 2024
概括
选择超大段 (SLS) 道的挖掘方法是关键. "上第一和下后"侧漂移 (SD) 方法适用于V级岩石,而顶部头部和板 (HB) 方法对III-IV级岩石有效.
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:
- 超大段 (SLS) 浅层埋地道由于其大跨度和复杂的工艺,存在重大建筑挑战.
- 挖掘方法的选择对于确保道的稳定性,成本效益和遵守施工时间表至关重要.
- 了解SLS道在不同岩石条件下的机械反应对于安全高效的施工至关重要.
研究的目的:
- 评估和比较SLS道的三种连续挖掘方法:侧向漂移 (SD),中央膜和顶部头部和长板 (HB).
- 在不同的挖掘方法和岩石等级 (III-V) 下,研究机械反应,包括岩石变形和压力.
- 确定SLS道的最佳挖掘策略,考虑安全性,成本和时间表,并通过现场测试验证.
主要方法:
- 用三维有限差异方法 (3D-FDM) 模拟来建模道的结构.
- 分析的重点是岩石变形,岩石压力和每种方法的主要支的内部力.
- 进行了现场监测和测试,以验证模拟结果并评估实际可行性.
主要成果:
- "上第一,下后"SD方法在V级岩层中证明了可行性和成本效益.
- 对于III至IV级岩石质量,HB方法被证明是合适且具有成本效益的.
- 模拟和实地测试提供了不同地质条件下每个方法性能的比较数据.
结论:
- 该研究确定了基于周围岩石等级的SLS道的最佳挖掘方法.
- 在特定的岩石条件下,建议使用"上第一和下后"SD方法和HB方法.
- 研究结果为参与SLS道建设的工程师和项目经理提供了宝贵的指导.
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