| 磨料射流破碎岩石的性能研究 |
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| 引用本文： | 向文英,李晓红,卢义玉,梁峰.磨料射流破碎岩石的性能研究[J].地下空间与工程学报,2006,2(1):170-174. |
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| 作者姓名： | 向文英 李晓红 卢义玉 梁峰 |
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| 作者单位： | 1. 城市建设与环境工程学院资源与环境科学学院,重庆大学,400045
2. 资源与环境科学学院,重庆大学,400045 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 磨料射流在切割破碎岩石时，将产生比纯水连续射流巨大的冲击力。从固液两相流特点出发，对高压磨料射流破碎岩石的机理进行了分析与实验研究。得出岩石在受到磨料射流的冲击下，磨粒与水体对岩石的冲击压力与岩石在水介质作用下力学特性的变化共同促使了岩石的破坏。岩石破坏时最大剪应力位于0．5倍喷嘴直径的径向距离处，同时在固体介质表面边缘产生最大拉应力。该研究从理论与实验上为磨料射流破碎岩石奠定了理论基础。
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| 关 键 词： | 磨料射流 破碎 冲击压力 最大剪应力 |
| 文章编号： | 1673-0836（2006）01-0170-05 |
| 收稿时间： | 2005-06-30 |
| 修稿时间： | 2005-06-30 |
The Research of the Characteristic of Rock Broken by Abrasive Water Jet |
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| XIANG Wen-ying,LI Xiao-Hong,LU Yi-Yu,LIANG Feng.The Research of the Characteristic of Rock Broken by Abrasive Water Jet[J].Chinese Journal of Underground Space and Engineering,2006,2(1):170-174. |
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| Authors: | XIANG Wen-ying LI Xiao-Hong LU Yi-Yu LIANG Feng |
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| Affiliation: | 1. College of Urban Gonetruction and Environmental Engineering, Chongqing University, Chonqing 400045, China; 2. College of Resource and Environmental Science, Chongqing University, Chongqing 400045, China |
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| Abstract: | It will bring larger wallop with abrasive water jet than with pure water jet to incise and break rock.. In this paper the mechanism of rock broken with abrasive water jet under high pressure is analysed and experimented according to characteristic of solid and fluid stream. It has been shown that the impact pressure and changing of mechanical characteristic of rock together make it bwken by abrasive water jet. The maximum cutting stress lie of the radial distance of 0.5 double dianmeter nozzle, while the maximum pull stress lie in the surface edge of the rock. The theoretical and experimental works have established the foundation of abrasive waterjet incising and breaking rock. |
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| Keywords: | abrasive water jet incise and break impact pressure the maximum cutting stress |
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