Stability Analysis Of Rock Slope In Reservoir Port Based On The Fluid-solid Coupling Theory

The rock slope of reservoir port is a mixture included modified block by complicated geological conditions and tectonic structures (for example faults, fissures and joints), with the specific characteristics of the structure and mechanics, placed in certain geological environment (initial stress, groundwater, ect).Because of the complexity of its structure and mechanical properties and diversity of the geological environment in which,resulting in rock slope in the reservoir during operation of geological disasters are more likely to occur, which has serious influence on shipping.Therefore, the research on the stability of rock slope have an important social significance and economic benefits.In this dissertation, based on research findings at home and abroad on study dynamic of slope stability of the reservoir and the achieved analysis results of porous media fluid coupling, using numerical simulation,relyed on the first phase of FuNing Port construction project in Yunnan Provience, analyze the mechanism and safety factor of the rock slope on the reservoir port under the long-term water immersion stability under repeated fluctuation. The main work and conclusions in this dissertation are as follows:(1) The mathematical models of fluid-coupling theory are described at present, and compare various mathematical models with the insufficiency and the advantages. According to research questions in this article,proposed mathematical model used in this article.(2) The rock specimens are collected in FuNing Port,study the deteriorating law of sandstone strength parameters in "saturated - airing" circular function from triaxial test results and fitting sandstone strength equation.(3) Relyed on the first phase of FuNing Port construction project,based on the experimental results and fitting curve,using finite element analysis software ABAQUS to establishe the numerical model,analyse the influence of sandstone slope stability with the condition of the reservoir lift number, slope structure surface strength and structural plane obliquity.(4) According to the numerical model calculation results, analyse the plastic zone development process and the change rule of safety coefficient about rock slope of reservoir port.