层状边坡各向异性岩体渗流-应力耦合模型及工程应用

岩体渗流-应力耦合作用的研究是国内岩体渗流领域研究的热点问题，该问题在层状边坡工程中尤为常见。考虑到层状边坡岩体普遍存在的各向异性特征及渗流-应力耦合问题，基于等效连续介质模型和Louis经验公式，建立了层状边坡各向异性岩体渗流-应力耦合模型，应用COMSOL多物理场耦合软件对模型进行了数值计算。结果表明：该模型能够反映层状边坡岩体的各向异性变形及地下水渗流的非均匀性和各向异性特征。依托抚顺西露天矿南帮工程实例，通过采用不同的模型进行对比分析，研究了该边坡E800剖面地下水渗流情况。结果表明：采用该模型计算的潜水面与实际情况吻合较好，显示了该模型在层状边坡工程中良好的应用前景。

Seepage-stress coupling model of anisotropic rock mass of stratified slope and its engineering application

Seepage-stress coupling behavior is a hot issue in the field of rock mass seepage in China, which is particularly common in the stratified slope engineering where the groundwater seepage is involved. Considering the anisotropic properties and seepage-stress coupling behaviors of the stratified rock slope, a seepage-stress coupling model of anisotropic rock mass is established on the basis of the equivalent continuum model and Louis empirical equation. Then the model is implemented into COMSOL software. Numerical results show that the model is competent in reflecting the anisotropic deformation properties of stratified rock mass and the heterogeneous and anisotropic behaviours of groundwater seepage. Moreover, this model is applied for the seepage analysis of the cross-section E800 of the south of Fushun west open-pit mine. To compare and analyze the influence of seepage-stress coupling in stratified rock mass, two different models are employed. The results indicate that the water table calculated by the proposed model is in good agreement with the in-situ measurement, and the model has a good prospect in such stratified rock slope engineering.