| 地下开采引起围岩间断面变形特征的软材料小模型研究 |
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| 引用本文： | 卢蓉,马凤山,郭捷,郭慧高,寇永渊.地下开采引起围岩间断面变形特征的软材料小模型研究[J].地质力学学报,2018,24(5):670-675. |
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| 作者姓名： | 卢蓉 马凤山 郭捷 郭慧高 寇永渊 |
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| 作者单位： | 1.中国科学院地质与地球物理研究所 中国科学院页岩气与地质工程重点实验室, 北京 100029 |
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| 基金项目： | 国家自然科学基金项目（41772341，41372323） |
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| 摘 要： | 为了研究地下开采引起围岩变形和断层活化现象，文章采用一种软材料的小模型进行地下开采间断面变形的模拟。模型中通过模拟一个矩形地下采区上方围岩的变形来研究一个水平间断面发生活化后的弯曲现象。模拟结果表明，间断面上的剪切位移分布具有"双峰"的特征或规律。这种分布特征或规律，得到了数值模拟结果的验证。同时，也证明了该方法的有效性。该方法最大的优点是，可以用小尺寸模型有效模拟在自重体积力作用下开挖引起的围岩变形现象，具有实验装置简单、实验用时短、操作方便、实验成本低等诸多优点，是一种值得推广的物理模拟方法。
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| 关 键 词： | 小模型 结构面 双峰曲线 自重应力 地下开采 变形模拟 |
| 收稿时间： | 2018/7/17 0:00:00 |
| 修稿时间： | 2018/8/7 0:00:00 |
A SMALL-SCALE MODEL OF SOFT MATERIALS USED FOR STUDYING THE UNDERGROUND MINING INDUCED DDISCONTINUITY PLANE DEFORMATION |
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| LU Rong,MA Fengshan,GUO Jie,GUO Huigao and KOU Yongyuan.A SMALL-SCALE MODEL OF SOFT MATERIALS USED FOR STUDYING THE UNDERGROUND MINING INDUCED DDISCONTINUITY PLANE DEFORMATION[J].Journal of Geomechanics,2018,24(5):670-675. |
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| Authors: | LU Rong MA Fengshan GUO Jie GUO Huigao and KOU Yongyuan |
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| Institution: | 1.Key Laboratory of Institute Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China2.Institute of Earth Science, Chinese Academy of Sciences, Beijing 100029, China3.College of Geoscience, University of Chinese Academy of Sciences, Beijing 100049, China4.Jin Chuan Group Co., Ltd, Jinchang 737100, Gansu, China |
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| Abstract: | In order to study surrounding rock deformation and fault activation caused by underground mining, a small-scale model of soft materials is adopted to simulate the s discontinuity plane deformation induced by underground mining. The bending of a horizontal discontinuity plane after activation is studied through the model by simulating the deformation of the surrounding rock at the top of a rectangular underground mining area. The simulation results show that the shear displacement distribution on the discontinuity plane has the feature of bimodal curve, which is verified by numerical simulation. At the same time, the validity of this method is proved. The biggest advantage of this method is that the small-scale model can effectively simulate the deformation of surrounding rock caused by underground mining under the action of self-weight stress, with simple experimental equipment, short time, convenient operation and low cost. It is a physical simulation method worth popularizing. |
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| Keywords: | small-scale model structural plane bimodal curve self-weight stress underground mining deformation simulation |
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