| 爆破影响下岩质高边坡浅表层块体稳定性研究 |
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| 引用本文： | 霍宇翔,黄润秋,巨能攀,赵建军.爆破影响下岩质高边坡浅表层块体稳定性研究[J].工程地质学报(英文版),2009,17(6):796-801. |
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| 作者姓名： | 霍宇翔 黄润秋 巨能攀 赵建军 |
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| 作者单位： | 成都理工大学地质灾害防治与地质环境保护国家重点实验室 |成都 |610059 |
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| 摘 要： | 摘要:岩质高边坡整体稳定性主要受软弱结构面及其组合控制，在组合有利的情况下，边坡主要发生浅表层块体失稳，开挖时的爆破振动作用是影响浅表层块体稳定的重要因素。本文以大渡河中游某岩质块状结构高边坡为例研究浅表层块体的稳定性，在总结浅表层块体失稳特征的基础上，实测爆破振动曲线，进行块体稳定性评价。研究结果表明，开挖后已失稳浅表层块体大多小于10m3，80%受软弱结构面控制，70%集中在马道下缘；实测的浅表层块体爆破振动加速度曲线显示，与邻近围岩相比，浅表层块体振动持续时间长，频率低，峰值小；等效静力法评价结果较爆破参数推算法更适用于临界失稳浅表层块体的稳定性评价。
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| 关 键 词： | 关键词:岩质边坡 浅表层块体 稳定性评价 爆破振动 实测加速度 |
STABILITY EVALUATION OF SURFACE ROCK BLOCKS IN HIGH SLOPE UNDER BLASTING |
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| HUO Yuxiang HUANG Runqiu JU Nengpan ZHAO Jianjun.STABILITY EVALUATION OF SURFACE ROCK BLOCKS IN HIGH SLOPE UNDER BLASTING[J].Journal of Engineering Geology,2009,17(6):796-801. |
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| Authors: | HUO Yuxiang HUANG Runqiu JU Nengpan ZHAO Jianjun |
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| Institution: | State Key Laboratory of Geohazard Prevention and Geoenvironment Protection|Chengdu University of Technology|Chengdu610059 |
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| Abstract: | Rock slope has weak structural planes. They are propitious to stability. The primary stability problem of rock slope i the surface rock block stability. Blasting vibration with excavation is an important factor in stability evaluation of surface rock blocks. This paper examines the case of a granite slope on middle Dadu River. It summarizes the rule of the failure rock blocks on surface characteristics. Secondly,it measures the blasting vibration acceleration curve of a potential failure block. Finally,it c... |
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| Keywords: | Rock slope Surface block Stability evaluation Blasting vibration Acceleration measurement |
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