Research Of Tail Deformation Coupling Model Under The Action Of Chemistry-stress-seepage

According to the fact that tail sand has an effect of chemical solution, load and seepageaction in natural state, analysis of tail sand mechanism on chemistry-stress-seepage, and researchinto nonlinear consolidation compression permeability mathematical model on effect ofchemistry-seepage-stress by the finite difference method, and the numerical solution is obtained.The main content of the paper as follows:(1) Analysis of main deformation mechanism of tail sand in chemical solution. Get tail sandwhich basic steps of chemical reaction, and change process of mechanics properties, cement andstrength on the effect of load, seepage action, tails draining and acid rain.(2) Based on the previous experimental results, obtain function of elastic modulus and timein different solution, and establish relationship of pore pressure-porosity-concentration of H+andrelationship of nonlinear coefficient of permeability-porosity-concentration of H+and boundarycondition, establish one-dimensional nonlinear consolidation compression permeabilitymathematical model by chemistry-stress-seepage.(3) Discrete processes is by the finite difference method, programming and solving bycalculation software after getting matrix, analysis and obtain: acid solution is the heaviestinfluence to deformation in the same load, the heavier load, the longer time to stability in thesame solution.