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识别地下水封闭道的爆炸振动特征
Xiaokang Rao1, Shengxiang Huang2
1School of Geodesy and Geomatics, Wuhan University, Wuhan, 430079, China.
Scientific reports
|August 21, 2023
概括
使用互补集体实证模式分解和希尔伯特-黄变换的新方法有效地识别了地下水密封道中的爆炸特征. 这种方法增强了关键基础设施项目的安全评估和振动分析.
科学领域:
- 地质技术工程 地质技术工程
- 振动分析 振动分析
- 信号处理 信号处理
背景情况:
- 爆炸在采矿,地铁建设和拆除中至关重要,由于邻近的结构和漏问题,地下水密封的道需要严格控制.
- 识别爆破特征对于地下水密封道的安全建造和运行完整性至关重要.
- 对于地下水密封道的独特挑战,传统的特征识别方法尚未得到充分探索.
研究的目的:
- 提出和验证一种新的方法,用于识别地下水密封道的爆破特征.
- 通过先进的信号处理,加强地下水密封道的安全评估和振动分析.
- 评估在这样的环境中毫秒爆破的可行性.
主要方法:
- 采用了与适应性噪声方法相辅相成的综合实证模式分解.
- 为了信号分析,集成了多尺度变量和希尔伯特-黄变换 (HHT).
- 拟议的方法使用数值模拟和现实世界案例研究 (黄道地下水密封道) 来验证.
主要成果:
- 拟议的方法有效地抑制了模态转换和信号噪声,从而能够准确识别喷射特征.
- 显著的爆炸振动能量集中在0-200 Hz (94.7%) 和0-50 Hz (72.5%) 的频率范围.
- HHT分析允许评估监测点的安全状况,并证实了毫秒爆炸的可行性.
结论:
- 开发的方法提供了一种有效的手段来识别振动特征,并评估地下水密封道的安全状态.
- 由HHT提供的时间频率和能量视角对于理解爆炸影响至关重要.
- 这种方法有助于在敏感的地下环境中进行更安全,更可控的爆破操作.
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