College of Safety Engineering,North China Institute of Science and Technology,Beijing　 101601,China

深井软岩条件下扰动荷载会引起围岩流变变形,在已提出的岩石流变扰动效应、强度极限邻域等概念的前提下,为得到岩石流变扰动效应本构关系,首先对岩石流变扰动效应实验仪的冲击扰动加载装置进行设计改进,能够准确测量出单次扰动冲击力及扰动作用时间,接着利用红砂岩进行单轴条件下的岩石流变扰动效应实验,研究岩石在恒定轴向荷载下,处于强度极限邻域内和强度极限邻域外的流变扰动效应规律,根据实验结果,绘制了不同流变阶段的累计扰动变形量-累积扰动能量曲线,结合岩石流变扰动的影响因素,在流变扰动曲线的基础上建立了岩石流变扰动本构方程。

The rheological deformation on surrounding rock would be changed by the disturbance load in soft rock of deep mine. This paper discussed the establishment of rheological disturbance constructive equation. Firstly,the rock rheological disturbance effect apparatus had been improved on the impact disturbing load setting,which could accu- rately measure each impact disturbing force and time. Secondly,the rheological disturbance effect law for inside and outside the strength limit neighborhood was studied,by using the rheological disturbance effect experiments of red rock on the steady axial load. The accumulated disturbance energy curve had diagrammed according to the test results, which was the accumulated disturbance deformation at different stages. Lastly,combining with the factors of rock rheo- logical disturbance,the rheological disturbance constructive equation was established.

国家自然科学基金资助项目(51404105,51574124)；河北省自然科学基金资助项目(E2015508047)；

Wang Bo,Gao Changyan,Chen Xuexi,et al. Axial load test study on the perturbation properties of rock rheology[J]. Journal of China Coal Society,2017,42(6):1443-1450.