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地压适应性电荷结构设计和机房挖掘现场验证
Xiaocui Chen1, Yuan Mi1, Xinru Shuai1
1School of Electrical and Power Engineering, Hohai University, Nanjing 210098, China.
Sensors (Basel, Switzerland)
|December 17, 2024
概括
使用3D模拟优化爆破挖掘,大大减少了保护层和周围结构的损坏. 这种方法有效地控制了地下建筑中的振动影响,而不会影响挖掘效率.
科学领域:
- 工程地质工程地质学
- 计算力学 计算力学 计算力学
- 岩石爆炸 岩石爆炸
背景情况:
- 施工中的爆破提供了速度和成本效益,但会引起破坏性的振动.
- 尽量减少振动影响,同时满足挖掘需求是爆炸挖掘的关键挑战.
研究的目的:
- 开发一个3D模拟和分析模型,以优化喷射程序.
- 研究充电结构对岩石碎片化和地下建筑中的振动传播的影响.
主要方法:
- 使用LS-DYNA有限元分析软件进行3D模拟.
- 制定了三个不同的爆炸程序,具有各种充电配置.
- 分析了岩石碎片化和振动传播.
主要成果:
- 优化的充电结构使保护层损伤减少了40%左右,侧墙冲击减少了27.25%和12.03%.
- 在多个方向的远程测量点降低振动速度.
- 后实施证实了周围岩石完整性和受保护结构的令人满意的结果.
结论:
- 基于模拟的优化有效地管理了喷气作业中的振动风险.
- 优化的爆破策略为地下建筑工程师提供了有价值的工具.
- 在不影响挖掘性能的情况下,显著减少了不利的振动影响.
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