The Research Of Flow-Stress Coupling In Fracture Rock Masses

The underground water is an important factor which influence the property of Rockmass Mechanics and Rock Mechanich.Because of the veriable facter in the form of the property of Rockmass Mechanics.Based on the date,there are more than 90% disasters in Geotechnic Engineering come from the action of underground water.So we shoud pay much attention to the mechanical effects in the research of Geotechnic Engineering.Therefore,after I have done a lot of research,I deduce the effective stress expression which use porosity to convey.After taking into the Differential Equations in Equilibrium ,we get Differential Equations of porosity in Equilibrium.Based on the Elastic theory seepage theory,we adopt the Equivalent Contionuum Media Model and FEM to engage in numeral simulation for coupling degree.Because the effect between flow field and stress field will never continue forever,it is important to ensure the constringency of the result.Because of the complexity and uncertainty of the crustal stress and action of the underground water,it is difficult to adopt linear analysis to feflect the truth.In this article,we adopt Finite Element Method(FEM) and ANSYS progress which has friendly user surface and completely mutual pre-post processor treatment faction to simulate a concrete some project and get the variety condition of the crustal stress and its influence to seepage.Considering the interaction between the groundwater and rock-soil skeletons,the paper establishes the solid-liquid coupled seepage mathematical model of groundwater flow .Based on the finite element principle,it obtains the computation method and gives the solving method of the coupled model.The prosses important significance for the real simulation of the groundwater seepage conditions.