| 考虑卸荷的加锚裂隙岩体力学参数研究 |
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| 引用本文： | 邓华锋,李建林,王乐华.考虑卸荷的加锚裂隙岩体力学参数研究[J].岩土力学,2008,29(4):1027-1030. |
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| 作者姓名： | 邓华锋 李建林 王乐华 |
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| 作者单位： | 三峡大学土木水电学院,宜昌,443002;武汉大学水利水电学院,武汉,430072 |
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| 基金项目： | 教育部科学技术研究项目 |
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| 摘 要： | 加锚岩体的力学参数确定一直是岩土工程中的一个重要和困难的问题，在考虑卸荷的情况下，对边坡岩体的分离块体经系统锚杆加固后的抗压强度、泊松比、弹性模量及c，?值的变化规律进行了数值模拟计算和分析，并考虑了不同的加卸载路径、锚固角和岩体强度对加固效果的影响，计算结果表明，在分析卸荷岩体边坡加固时，必须考虑裂隙岩体卸荷历史的影响。最后用试验结果验证了等效数值计算方法的正确性。
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| 关 键 词： | 系统锚杆 卸荷岩体 力学参数 数值模型试验 |
| 文章编号： | 1000-7598-(2008)04-1027-04 |
| 收稿时间： | 2006-04-10 |
| 修稿时间： | 2006年4月10日 |
Study on mechanic parameters of bolted fractured rock mass under unloading |
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| DENG Hua-feng,LI Jian-lin,WANG Le-hua.Study on mechanic parameters of bolted fractured rock mass under unloading[J].Rock and Soil Mechanics,2008,29(4):1027-1030. |
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| Authors: | DENG Hua-feng LI Jian-lin WANG Le-hua |
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| Institution: | 1.College of Civil & Hydropower Engineering, China Three Gorges University, Yichang 443002,China;2.School of Water Resource and Hydropower, Wuhan University, Wuhan 430072,China |
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| Abstract: | How to decide the parameters of bolted rock mass is an important and complicated problem in geotechnical engineering. Taking unloading into account, the variation regularity of compression strength, Poisson′s ratio, elastic modulus, c and friction angle ? values were studied and simulated by computer; and different loading-unloading paths, anchoring angle, strength of rock mass were taken into account. The computed results show that the influence of unloading process before reinforcement should not be neglected. Finally, some experimental data were used to testify the above-mentioned analysis. |
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| Keywords: | systematic bolts unloading rock mass mechanical parameter numerical model test |
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