The Softening Deformation Analysis And Stimulation Calculation Of Dilatancy In The Soft Rock Tunnel

The deformation and displacement of the soft rock tunnel has an important influence on the stability of the whole structure, is vital for us to calculate and stimulate deliciously the deformation conduct of the rock tunnel to choose the time and program of the standing.The softening property of the dilatancy during the damage has a vital effect on the displacement of the tunnel. In this thesis, the characteristic of the dialtancy is discussed under the state of loading as well as unloading .Under the condition of the dilatancy, using the theory of the elastic-plastic and the rock mechanics, a few mechanical models are derived. The numerical stimulation is carried out by using the software and the results have been obtained. Finally , the damage properties of the deformation of the soft rock tunnel including splits is stimulated by using the RFPA analysis system of the process of the rock damage.