评估超大截面道的HB和CD方法的施工参数:一个案例研究
1Faculty of Civil Engineering, Guizhou University, Guiyang, 550025, China. liuym_2021@163.com.
Scientific reports
|September 22, 2023
概括
在富含水的地区优化大型道的施工方法可以降低成本和时间. 该研究发现,对于顶部标题和排位 (HB) 和中心隔膜 (CD) 方法的特定步骤高度比率可以提高道的安全性和稳定性.
科学领域:
- 土木工程 土木工程是指土木工程.
- 地质技术工程 地质技术工程
- 道工程工程 道工程
背景情况:
- 传统的双侧墙导向坑和中心交叉图 (CRD) 方法用于水资源丰富的断层区域的大型道是昂贵和耗时的.
- 替代方法,如顶部标题和排位 (HB) 和中心隔膜 (CD),可以缩短施工时间和降低开支.
研究的目的:
- 为HB和CD方法优化施工参数,确保周围岩石的稳定性和道的安全性.
- 通过使用数值模拟来研究不同阶段高度对道顶沉积,周围岩石应力和初始支性能的影响.
主要方法:
- 在通济道使用HB和CD方法进行道挖掘的数值模拟.
- 分析道顶沉积,周围岩石应力,初始支轴力,曲时刻和安全因子在不同的阶段高度场景下.
主要成果:
- 在HB和CD方法中,增加上级阶段高度导致了更大的置,增加了外围收,并降低了初始支安全因子.
- 在距离目标面30米处观察到周围岩石中增加了塑料区域,步骤高度更大.
- 对于HB (0.45H,0.35H,0.2H用于上,中,下) 和CD (0.5H,0.5H用于上和下) 方法,确定了优化的步骤高度比率.
结论:
- 该研究为HB和CD方法提供了优化的步骤高度配置,以提高大截面道的安全性和稳定性.
- 这些发现有助于在具有挑战性的地质条件下更高效,更具成本效益的道建设.
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