在软硬复合岩质中双孔延时喷射的裂纹传播特征
Jianbin Cui1, Liangfu Xie2,3,4, Yongjun Qin1,5
1College of Civil Engineering and Architecture, Xinjiang University, Urumqi, 830017, China.
Scientific reports
|May 30, 2023
概括
通过调整爆孔距离和爆炸时间,可以控制软硬层中的岩石爆炸效应. 最佳的参数将""现象最小化,并影响裂的传播和碎片化.
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:
- 在异质岩层中控制爆破结果对于采矿和土木工程至关重要.
- 了解爆孔位置,延迟时间和岩层特性之间的相互作用对于可预测的碎片化至关重要.
研究的目的:
- 为了研究爆炸孔相对于软硬岩石接口的位置的影响,并延迟爆炸时间对爆炸效应的影响.
- 在分层地质条件下建立可控制的参数,以优化岩石质量爆炸.
主要方法:
- 使用PFC2D进行数值建模,以模拟软硬岩层中的双孔爆破.
- 通过分析应力场,压缩区和裂纹网络,对数值方法进行实验验证.
- 进行延迟喷射实验,使用不同的喷孔接口距离和启动时间.
主要成果:
- 这是一个很棒的节目,这是一个很棒的节目.
- 一个子,一个子.
- 爆孔之间的现象受到界面和延迟时间的距离的影响,随着延迟的增加而减弱.
- 根据硬岩石厚度和延迟时间,为裂数量得出了定量关系.
- 在硬岩石中启动导致了广泛的裂传播,但减少了碎片化,与在软岩石或结构平面中启动形成鲜明对比.
结论:
- 在软硬岩层中的爆炸效应可以通过优化爆炸孔的位置和延迟爆炸序列来有效控制.
- 该研究提供了基于地质和时间参数的碎片化和裂纹网络发展的预测框架.
- 研究结果为提高复杂地质环境中的爆炸效率和安全提供了实际指导.
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