| 国标岩体质量分级的简化方法 |
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| 引用本文： | 许宏发,周建民,吴华杰.国标岩体质量分级的简化方法[J].岩土力学,2005,26(Z2):88-90. |
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| 作者姓名： | 许宏发 周建民 吴华杰 |
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| 作者单位： | 1.解放军理工大学 工程兵工程学院，南京 210007；2.北京总参工程兵第四设计研究院，北京 100850 |
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| 摘 要： | 我国现行的《工程岩体分级标准》GB 50218-94在确定岩体基本质量指标BQ时较繁琐，为此将BQ公式和规范条文表格制成曲线图，根据岩石的单轴饱和抗压强度和岩体完整性系数，由曲线图可以方便地确定BQ和质量等级。为了便于在施工中确定岩体强度等多种物理力学指标，还编制了BQ与指标的关系图表。通过在工程实例中的应用，证明上述图表简单实用。
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| 关 键 词： | 岩体 围岩 质量分级 国家标准 |
| 收稿时间： | 2005-04-29 |
Simplified method for national standard for
engineering classification of rock mass |
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| XU Hong-fa,ZHOU Jian-min,WU Hua-jie.Simplified method for national standard for
engineering classification of rock mass[J].Rock and Soil Mechanics,2005,26(Z2):88-90. |
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| Authors: | XU Hong-fa ZHOU Jian-min WU Hua-jie |
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| Institution: | 1.Engineering Institute of Engineering Corps, PLA Univ. of Sci.& Tech , Nanjing 210007, China;
2.The 4th Engineering Design & Research Academy, General Staff, PLA, Beijing 100850, China |
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| Abstract: | Surrounding rock classification and rock mass quality classification are basic methods to estimate rock mass quality and stability synthetically. It is cockamamie to determine the index of rock mass basic quality (BQ) according to National Standard for Engineering Classification for Rock Mass: GB 50218-94 in China. The graph of BQ and quality classification has been executed from the BQ formulas and the clauses in Nation Standard. The BQ values and quality classification can be gotten expediently based on rock’s uniaxial saturated compression strength and intactness index of rock mass in the graph. In order to obtain conveniently physico-mechanical parameters of rock mass, the relation chart between the BQ and these parameters has been made. The practicality of the graph and chart is proved by applying them to an underground engineering. |
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| Keywords: | rock mass surrounding rock quality classification national standard |
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