| 考虑能耗特性的岩桥型边坡动力失稳研究 |
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| 引用本文： | 邵 扬,李庆文,乔 兰,陈 璐,吴再海.考虑能耗特性的岩桥型边坡动力失稳研究[J].中国矿业,2018,27(5). |
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| 作者姓名： | 邵 扬 李庆文 乔 兰 陈 璐 吴再海 |
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| 作者单位： | 北京科技大学土木与资源工程学院 |
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| 基金项目： | 国家重点研发计划资助项目(2016YFC0600703);中国博士后科学基金第60批面上资助项目(2016M600044). |
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| 摘 要： | 边坡中的岩体是岩质高陡边坡稳定性的关键,而岩体由岩块和各种结构面组成。岩桥型岩质滑坡是大型边坡滑坡的主要类型之一,对于这类边坡,岩桥段起着关键的锁固作用。在分析边坡的稳定性时,可将岩体工程的整体稳定性问题简化为分析岩桥段的稳定性问题,针对岩桥段进行加固处理,就可以保证整个工程岩体的安全和稳定。以凹山铁矿为工程背景,搜索并确认出边坡的岩桥,通过对岩桥段块体的能量分布及承载能力进行分析,将块体中的能量分为势能、爆破振动能、破碎耗能、摩擦耗能以及失稳动能,每部分能量通过不同的理论或实验来获取。研究岩桥型边坡的动力失稳问题对于这类滑坡的稳定性评价及灾害防治有较好的指导意义。
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| 关 键 词： | 岩桥 边坡稳定性 能量分布 爆破 |
| 收稿时间： | 2017/8/15 0:00:00 |
| 修稿时间： | 2018/3/14 0:00:00 |
Considering energy consumption characteristics to analyze dynamic stability of rock bridge slope |
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| SHAO Yang,LI Qingwen,QIAO Lan,CHEN Lu and WU Zaihai.Considering energy consumption characteristics to analyze dynamic stability of rock bridge slope[J].China Mining Magazine,2018,27(5). |
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| Authors: | SHAO Yang LI Qingwen QIAO Lan CHEN Lu and WU Zaihai |
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| Affiliation: | School of Civil and resource Engineering,University of Science and Technology Beijing,School of Civil and resource Engineering,University of Science and Technology Beijing,School of Civil and resource Engineering,University of Science and Technology Beijing,School of Civil and resource Engineering,University of Science and Technology Beijing,School of Civil and resource Engineering,University of Science and Technology Beijing |
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| Abstract: | Researching on rock slope stability, the rock mass must be studied first. Rock mass is complex geological body, which composed of rock and discontinuities. The rock slide of rock bridge is a main type of large rock slide. For such slopes, rock bridges have key influence on the stability of the slopes. When the stability of the slope is analyzed, the overall stability of the rock mass can be simplified to analyze the stability of rock bridge. To reinforce the rock bridge section can ensure the safety and stability of the whole project. In the background of Washan open-pit mine, search and confirm the rock bridge of slope, and analyze the energy distribution and carrying capacity of the rock bridge. The mainly acting energy was determined as potential energy, blasting vibration energy, fractured dissipative energy, friction dissipative energy and kinetic energy of instability. Each part of energy was obtained by different theory or test.These results are of great significance for the stability evaluation and hazard control of such landslides. |
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| Keywords: | Rock bridge Slope stability Energy distribution Blasting |
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