摘要
为研究渗流应力耦合作用下含倾角层理岩体的稳定性,基于岩体极限平衡状态方程,以30°层理白云岩为例,推导该层理岩体在渗流应力耦合作用下的稳定性判别式,通过等效连续介质模型和Louis经验公式,建立渗流应力耦合模型,并采用Midas GTS NX对该层理岩体进行渗流应力耦合作用稳定性分析,建立相应的数值试验。结果表明,所建立的渗流应力耦合模型分别对10和50 kN/m荷载作用下的层理岩体总水头、总位移、剪应变进行数值分析,模型的计算结果与判别式计算结果拟合度较好;判断了层理岩体的稳定性,可为类似研究提供相应的理论依据,具有一定工程应用价值。
In order to study the stability of the layered rock mass with dip angle under the coupling action of seepage stress,based on the limit equilibrium state equation of rock mass,taking 30°layered dolomite as an example,the stability discriminant of the layered rock mass under the coupling action of seepage stress is derived.The seepage stress coupling model is established by equivalent continuum model and Louis empirical formula,and Midas GTS is adopted Nx has carried on the seepage stress coupling action stability analysis to this bedding rock mass and established the corresponding numerical test.The results show that the seepage stress coupling model established in this paper analyzes the total water head,total displacement and shear strain of the bedding rock under the action of 10 kN/m and 50 kN/m respectively,and the calculation results of the model fit well with the results of the discriminant calculation;the stability of the bedding rock is judged,which can provide the corresponding theoretical basis for similar research and has certain engineering application value.
作者
刘远桢
LIU Yuan-zhen(Guizhou Airport Group Co.Ltd.,Guiyang 550005,China)
出处
《水利科技与经济》
2020年第7期11-15,共5页
Water Conservancy Science and Technology and Economy
