倾斜轴突爆破碎片的统计预测方法基于挖掘岩石质量中的动态损害分布
Xin Wei1, Zhan Shen2, Kaiwen Song3
1School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan, 430070, China.
Scientific reports
|October 7, 2025
概括
这项研究开发了一种新的方法,通过分析岩石质量损伤分布来预测倾斜轴爆炸中的岩石碎片化. 优化的喷气参数显著改善了碎片化,减少了超大尺寸的岩石,提高了项目效率.
科学领域:
- 地质技术工程 地质技术工程
- 岩石机械学 岩石机械学
- 爆炸物工程 爆炸物工程
背景情况:
- 倾斜井喷挖掘面临着试验井堵塞和碎片化控制的挑战.
- 精确预测岩石碎片化对于优化爆炸操作和确保项目成功至关重要.
研究的目的:
- 为了研究岩石质量损伤分布和倾斜轴爆炸中的碎片分级之间的合机制.
- 根据动态损伤分布,开发一个针对爆破碎片的预测模型.
- 为了优化爆炸参数,改善碎片化和减少超大尺寸的岩石.
主要方法:
- 现场爆炸实验是在天桥式储能电站进行的.
- 使用LS-DYNA数值模拟来分析动态损伤分布.
- 在损害分布和碎片化分级之间建立了统计相关性.
- 开发了一种碎片化预测模型,并根据现场数据进行验证.
主要成果:
- 一个高精度的预测模型 (R2=0.9689) 爆破碎片是基于岩石质量动态损伤分布开发的.
- 分离系数和爆孔间距被确定为控制碎片化的主要因素.
- 减少脱系数和爆孔间距,增强了碎片化和细颗粒含量,同时最大限度地减少了超大片段.
- 优化的喷射参数导致过大尺寸碎片的显著减少,提高了整体喷射效率.
结论:
- 开发的基于损害分布的预测模型为复杂的地下工程中的碎片化预测提供了一种新而实用的方法.
- 优化爆破参数,特别是脱系数和爆破孔间距,是控制岩石碎片化和提高挖掘效率的关键.
- 这些发现对类似的地下项目具有重要的工程适用性和宣传价值.
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