摘要
基于大量的岩块流变试验,从岩石长期强度的衰减特征和岩石的应变能守恒原则出发,建立了非弹塑黏性元件组合模型的软岩(煤)非线性流变数学力学模型.在此基础上,进一步建立了软岩(煤层)巷道围岩非线性流变数学力学模型,并采用实验室三轴巷道围岩流变试验对该模型的有效性进行了验证.应用该模型计算的煤层巷道围岩受掘进影响期间的深部位移与现场实测结果非常吻合.
A non-linear rheologic mathematical mechanical model of weak rock/coal that differs with combination models of elastic-plastic-viscosity elements on the basis of a lot of rock sample rheology experiments. Its theoretical basis is the attenuation characteristics of rock's long-period strength and strain energy conservation law of rock. Based on this model, a non-linear rheologic mathematical mechanical model of roadway's surrounding rock in weak rock/coal seam was established. The experimental results from the roadway's 3D rheology apparatus made by the authors verified the validity of the model. Then the model was applied to calculate the values of multipoint displacements of deep boreholes in a seam roadway influenced by drilling. The calculated values and the observation values from field are in good coincidence.
出处
《中国矿业大学学报》
EI
CAS
CSCD
北大核心
2004年第4期468-472,共5页
Journal of China University of Mining & Technology
基金
教育部博士点基金项目(20030290017)
关键词
流变
非线性
数学力学模型
巷道
软岩
rheology
non-linear
mathematical mechanical model
roadways
weak rock
