| 开挖岩体边坡卸荷带宽度的计算方法 |
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| 引用本文： | 陈洪凯,易丽云,唐红梅,何晓英.开挖岩体边坡卸荷带宽度的计算方法[J].防灾减灾工程学报,2011,31(4):358-363. |
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| 作者姓名： | 陈洪凯 易丽云 唐红梅 何晓英 |
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| 作者单位： | 重庆交通大学岩土工程研究所,重庆,400074 |
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| 基金项目： | 国家自然科学基金，重庆市重点自然科学基金，西部交通科技建设项目 |
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| 摘 要： | 卸荷带的判别与计算,直接关系到岩体边坡的长期稳定性及致灾安全性.针对均质岩体边坡,采用弹性理论楔形体力学模型,提出了开挖岩体边坡力学模型,建立了开挖岩体边坡应力的计算方法；从开挖高度、开挖坡度、台阶宽度、岩体粘聚力、内摩擦角及岩体容重等方面,通过敏感性分析,探讨了开挖岩体边坡卸荷带宽度的变化规律,据此采用量纲分析法,建...
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| 关 键 词： | 岩体力学 卸荷带宽度计算方法 弹性理论 开挖岩体边坡 |
Calculation Method of Unloading Width for Excavated Rock Slopes |
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| CHEN Hong-kai,YI Li-yun,TANG Hong-mei,HE Xiao-ying.Calculation Method of Unloading Width for Excavated Rock Slopes[J].Journal of Disaster Prevent and Mitigation Eng,2011,31(4):358-363. |
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| Authors: | CHEN Hong-kai YI Li-yun TANG Hong-mei HE Xiao-ying |
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| Institution: | (Institute of Geotechnical Engineering,Chongqing Jiaotong University,Chongqing 400074,China) |
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| Abstract: | The discrimination of unloading zones influent the long-term stability and safety of rock slopes.For homogenous rock slope,the unloading mechanics model of excavated rock slope is got based on elastic wedge theory.The method used for calculating the width of unloading zones is deduced.Some parameters that affect the width of unloading zones,such as height,angle and width of excavation,cohesive strength,friction angle and density of rock mass are discussed through sensitivity analysis.Finally a formula is established to calculate the width of unloading zones by using dimensional analysis method. |
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| Keywords: | rock mechanics width calculation method for unloading zones elastic theory excavated rock slope |
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