| 深部岩体块系摩擦减弱效应试验 |
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| 引用本文： | 许琼萍,陆渝生,王德荣.深部岩体块系摩擦减弱效应试验[J].解放军理工大学学报,2009,10(3):285-289. |
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| 作者姓名： | 许琼萍 陆渝生 王德荣 |
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| 作者单位： | 许琼萍(江西省萍乡公路交通管理局,江西,萍乡,337055);陆渝生,王德荣(解放军理工大学,工程兵工程学院,江苏,南京,210007)
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| 基金项目： | 国家自然科学基金资助项目，教育部新世纪优秀人才支持计划资助项目 |
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| 摘 要： | 为了研究深部岩体在冲击作用下的力学特性,用深部岩体动态特性多功能试验系统对块系岩石在垂直冲击载和水平拉力作用下的动态特性进行了试验研究,通过试验,明确了冲击载、水平静力和摩擦力之间存在的相互联系,建立了冲击能与特征摩擦力、冲击能与摩擦减弱系数的函数关系,确定了产生摩擦减弱效应和超低摩擦效应的特征值条件.结论表明:在垂直冲击能和水平静力共同作用时,水平静力与余留位移的关系呈抛物线状,而且抛物线会出现一个余留位移的突变,突变后余留位移的增大明显加快.
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| 关 键 词： | 块系岩体 摩擦减弱效应 超低摩擦效应 特征摩擦力 减弱系数 |
Exper imental study on friction weakened effect of deep block rock mass |
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| XU Qiong-ping,LU Yu-sheng and WANG De-rong.Exper imental study on friction weakened effect of deep block rock mass[J].Journal of PLA University of Science and Technology(Natural Science Edition),2009,10(3):285-289. |
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| Authors: | XU Qiong-ping LU Yu-sheng and WANG De-rong |
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| Institution: | 1.Highway Administration Bureau of Pingxiang;Pingxiang 337055;China;2.Engineering Institute of Corps of Engineers;PLA Univ.of Sci.& Tech.;Nanjing 210007;China |
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| Abstract: | Using multi-functional test system of the deep rock mass dynamic specialty,the dynamic specialty of the block rock mass under the vertical impact and the horizontal tensile force was studied.The interrelationship among the impact,the horizontal static force and the friction were defined,and the functional relations between the impact energy and the characteristic friction,the impact energy and the friction weaken coefficient were built.Conditions to create the friction weakened effect and the ultra-low fric... |
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| Keywords: | block rock mass friction weakened effect ultra-low friction effect characteristic friction weaken coefficient |
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