| 公伯峡电站开挖边坡古风化岩松弛与工程特性变化研究 |
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| 引用本文： | 李晓,聂德新,万宗礼,马福祥,贺咏梅.公伯峡电站开挖边坡古风化岩松弛与工程特性变化研究[J].力学学报,2005,13(2):155-159. |
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| 作者姓名： | 李晓 聂德新 万宗礼 马福祥 贺咏梅 |
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| 作者单位： | 1. 西南交通大学环境科学与工程学院,成都610031;
2. 成都理工大学环境与土木工程学院,成都610059;
3. 国家电力公司西北勘测设计研究院,西安710065 |
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| 摘 要： | 利用公伯峡电站泄水洞左岸边坡开挖过程中获得的各种资料,分析、研究边坡在开挖后岩体松弛程度和工程特性的变化。分析表明,边坡开挖后,一定深度范围内边坡岩体将松弛,松弛带的厚度可以通过现场调查、地震波速、声波速度来划分。岩体发生松弛后,松弛带岩体力学参数明显降低。开挖后尽快支护是防止边坡岩体松弛有效方法之一。
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| 关 键 词： | 古风化岩 边坡 工程特性 松弛 |
| 收稿时间： | 2004-10-08 |
| 修稿时间： | 2005-01-24 |
STUDY ON RELAXATION AND CHANGE IN ENGINEERING CHARACTERISTIC OF THE ROCK PALEO-WEATHERED AFTER SLOPE EXCAVATED |
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| LI Xiao,NIE Dexin,WAN Zongli,MA Fuxiang,HE Yongmei.STUDY ON RELAXATION AND CHANGE IN ENGINEERING CHARACTERISTIC OF THE ROCK PALEO-WEATHERED AFTER SLOPE EXCAVATED[J].chinese journal of theoretical and applied mechanics,2005,13(2):155-159. |
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| Authors: | LI Xiao NIE Dexin WAN Zongli MA Fuxiang HE Yongmei |
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| Institution: | 1. Environment Science and Engineering College of Southwest Jiaotong University, Chengdu 610031;
2. College of Environment and Civil Eengineering of Chengdu University of Technology, Chengdu 610059;
3. Northwest Investigation,Design&Research Institute,SPC, Xi'an710065 |
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| Abstract: | The relaxation and engineering characteristic of rock mass after slope excavation are studied based on the monitoring data from the slope excavation in a hydropower station. The results indicate that rock mass of the slope will be relaxed along the slope face after sideslope excavation and that the thickness of relaxation zone can be measured by engineering investigation, survey of seismic wave velocity and sound wave. The mechanical strength of rock mass will decreases after relaxation. Shoring immediately after excavation is one of the effective methods of preventing rock mass from relaxation. |
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| Keywords: | Paleo-weathered rock Slope Engineering characteristics Relaxation |
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