| 基于模糊综合评判的Hoek-Brown强度准则修正及应用 |
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| 引用本文： | 张良刚,吴 立,徐昌茂,陈 剑.基于模糊综合评判的Hoek-Brown强度准则修正及应用[J].岩土力学,2013,34(Z2):88-93. |
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| 作者姓名： | 张良刚 吴 立 徐昌茂 陈 剑 |
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| 作者单位： | 中国地质大学（武汉）工程学院，武汉 430074 |
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| 基金项目： | 国家自然科学基金资助（No. 41202201）。 |
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| 摘 要： | 阐述了岩质边坡岩体力学参数研究的意义，介绍了国内外常用的几种岩体力学参数的确定方法，但其准确性值得商榷和论证。针对Hoek-Brown强度准则D值的确定存在的困难，基于模糊综合评判，对产生扰动的影响因数综合考虑，确定了依托工程的D值，工程应用表明更加接近实际情况，并且探讨了岩质边坡的岩体以滑动面为界限划分扰动区与非扰动区的合理性，克服了其他公式的不足。以利比里亚邦矿铁矿岩体力学参数研究为例，分别用计算出的修正参数和其他几种方法进行计算分析对比，结果表明所计算出的修正D值更能反映实际的扰动程度，并论证了划分扰动区与非扰动区的合理性和意义，具有重要参考价值。
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| 关 键 词： | Hoek-Brown强度准则 模糊综合评判 扰动系数D 扰动区 |
| 收稿时间： | 2013-05-07 |
Modification of Hoek-Brown criterion and its application based on fuzzy synthetic evaluation |
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| ZHANG Liang-gang,WU Li,XU Chang-mao,CHEN Jian.Modification of Hoek-Brown criterion and its application based on fuzzy synthetic evaluation[J].Rock and Soil Mechanics,2013,34(Z2):88-93. |
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| Authors: | ZHANG Liang-gang WU Li XU Chang-mao CHEN Jian |
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| Institution: | Faculty of Engineering, China University of Geosciences, Wuhan 430074, China |
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| Abstract: | Firstly, the importance of study on mechanical parameters of rock mass is presented, and some methods to determine mechanical parameters are introduced, whereas their accuracy are questionable and argument. As there is difficulty in determining the disturbance factor D relayed on the Hoek-Brown strength criterion, fuzzy comprehensive evaluation is employed. Considered the factors influencing on disturbance and relevant engineering experience, the value of D is calculated accordingly, which is more corresponded to the practicality. Afterward, the rationality, that the bounds characterized by slip surface for dividing disturbed and undisturbed zone, is discussed; and it overcome deficiency of other expressions. Additionally, to further verify the reasonability and significance of such dividing, and with a practical engineering, calculation of the factor D is given using the modified and other methods respectively. According to the comparative analysis, it is shown that the former is more suitable to the disturbance degree in-situ. |
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| Keywords: | Hoek-Brown strength criterion fuzzy synthetic evaluation disturbed factor D disturbed zone |
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