强度极限邻域内岩石单轴蠕变扰动试验研究  

Experimental study on uniaxial creep disturbance of rock in the neighborhood of strength limit

作　　者：王波[1] 刘重阳 高昌炎 闫刚[1] 杨建林[1] 谷长宛 WANG Bo;LIU Chongyang;GAO Changyan;YAN Gang;YANG Jianlin;GU Changwan(College of Safety Engineering,North China Institute of Science and Technology,Beijing 101601,China)

机构地区：[1]华北科技学院安全工程学院,北京101601

出　　处：《煤炭科学技术》2018年第7期81-86,共6页Coal Science and Technology

基　　金：国家自然科学基金青年科学基金资助项目(51404105);中央高校基本科研业务费资助项目(3142018034);河北省自然科学基金资助项目(E2015508047)

摘　　要：为了研究强度极限领域内岩石蠕变对外界扰动的响应规律,选取红砂岩为研究对象,基于RRTS-Ⅲ岩石流变扰动效应试验系统,进行了岩石单轴压缩蠕变扰动试验。试验探究了强度极限邻域内和强度极限邻域外的不同蠕变阶段,外界扰动对岩石蠕变规律的影响。试验结果表明强度极限邻域外岩石蠕变对外界扰动响应不明显,扰动产生的蠕变扰动变形量小且具有可恢复性;随着扰动能量的累积,蠕变变形量减速增长至趋于稳定。强度极限邻域内岩石蠕变对外界扰动响应明显,扰动产生的蠕变扰动变形量剧烈增加且不可恢复,随着扰动能量的累积,蠕变变形量加速增长至试件破坏。In order to study the response law of rock creep to the external disturbance in the field of strength limit neighborhood,the red sandstone is selected as the research object. Based on the RRTS-III rock rheological disturbance effect test system,the rock uniaxial compression creep disturbance test was carried out. The experiment explored the influence of the external disturbance on the creep law of rock at different creep stages inside the strength limit neighborhood and outside the strength limit neighborhood. The experimental results show that the response of the rock creep to the external disturbance is not obvious outside the strength limit neighborhood,and the deformation of the creep caused by the disturbance is small and recoverable. With the accumulation of the disturbance energy,the creep deformation amount decelerates increase to a stable state. The rock creep inside the strength limit neighborhood responds to the external disturbance obviously,and the creep disturbance deformation caused by the disturbance increases dramatically and cannot be recovered. As the disturbance energy accumulates,the creep deformation accelerates increase to the destruction of the specimen.

关 键 词：岩石单轴蠕变扰动试验 强度极限邻域 蠕变变形 扰动能量 

分 类 号：TD76[矿业工程—矿井通风与安全]