一种用于计算JRC的节理面起伏形态表征方法

赵志鹏; 马明; 王刚; 王珂

doi:10.11779/CJGE201803024

一种用于计算JRC的节理面起伏形态表征方法 English Version

赵志鹏¹,
马明¹,
王刚^1,2, ,,
王珂¹

1. 山东省土木工程防灾减灾重点实验室（山东科技大学）,山东青岛 266590;
2. 山东科技大学矿山灾害预防控制省部共建国家重点实验室培育基地,山东青岛 266590

基金项目: 国家自然科学基金面上项目（51479108,51379117）; 中国博士后科学基金面上项目（2015M580599）

详细信息

作者简介:
赵志鹏(1992-),男,硕士研究生,山东莱芜人,主要从事岩石力学与工程方面的科研工作。E-mail：9946030@qq.com。

通讯作者:
王刚，E-mail：wanggang1110@gmail.com

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出版历程
- 收稿日期: 2017-05-24
- 发布日期: 2018-03-24

New method of joint surface morphology for calculating JRC

1. Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong University of Science and Technology, Qingdao 266590, China;
2. State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China

摘要

摘要: 通过间隔取样的方式将Barton所提出的十条标准JRC曲线离散化,获取其离散数据点后尝试不同的函数形式对离散数据点进行拟合,探求能够描述节理面剖面线起伏形态的函数表达式。在获取节理剖面线的近似函数表达式后用其计算标准JRC曲线的节理参数。分析对比拟合结果与节理参数计算结果发现：节理面剖面线具有较强的三角函数特性,利用正弦函数逼近获取的近似函数表达式在形态上可以很好地表征节理面的起伏情况,并可以近似代替节理曲线对JRC值进行计算,其结果相比较于通过离散点得到的计算结果更为精确。这也为进一步利用JRC-JCS模型准确计算节理面剪切强度奠定了基础。
- 岩石力学 /
- 岩石节理 /
- JRC /
- 剪切强度 /
- 离散间距
Abstract: In order to explore the expression that well describes the fluctuations of the section line of joints, ten typical JRC curves proposed by Barton are discretized by using the interval sampling, and then the discrete data points are fitted by different functions. The expression obtained from the fitting of the data is used to calculate the joint parameters of the standard JRC curve. Comparison between the results of the fitting and the calculated values of the joint parameters shows that the section line of the joint conforms to the trigonometric function. The approximate function obtained by the sine function approximation can well characterize the fluctuation of the joint. The values of JRC calculated by the approximate joint curve replaced by the sine approximate function are more accurate than those obtained by using the discrete points. This also makes it possible to accurately estimate the joint shear strength by using the JRC-JCS model.
- rock mechanics /
- rock joint /
- JRC /
- shear strength /
- sampling interval

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参考文献(17)

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