Study On The Stability Of The Foundation Slope Of Longchang Aqueduct

The terrain of western China is undulating and the slope is high and high.With the development of China's basic water conservancy facilities and the large-scale development of water diversion projects,there are more and more engineering problems,especially the problem of slope stability.The consequences are also more serious.An in-depth study of slope stability issues has become particularly important.Therefore,it is necessary to adopt a more comprehensive and more detailed method to conduct comprehensive research and guide engineering practice.This paper takes the Longchang Aqueduct of the Guizhong Water Conservancy Project in Guizhou Province as an example.Through the on-site geological survey and data collection and testing,the relevant information of the study area is obtained.On this basis,the formation process of the slope was studied and the influence of slope karst,groundwater and aqueduct seepage on the stability of the foundation slope was analyzed.Under the premise of fully considering the influence of factors related to slope stability,and after demonstrating the rationality and feasibility of modeling,the slope analysis was carried out using flac3 d software.The current monitoring data is then compared and analyzed with numerical simulation results.Finally,the long-term stability of the base slope of the Longchang aqueduct is analyzed by numerical simulation,and the stability of the Longchang aqueduct slope is finally evaluated.After in-depth study of the slope,the paper has achieved the following research results:After fully investigating the geological conditions of the slope,the morphological characteristics of the slope were studied in detail,and the rock and soil structure of the slope was divided.The final determination of the physico-mechanical parameters that need to be obtained in the study is then carried out.After analyzing the formation process of the slope,the effects of karst and karst formed on the slope were studied.Finally,the stability of the natural slope of the Longchang aqueduct was analyzed.The stress characteristics of the foundation slope and the stress adjustment of the slope under the engineering load conditions during the construction of the aqueduct were studied.Secondly,the factors affecting the slope stability were combed together with the engineering characteristics.Based on the above analysis,the paper analyzes the possible damage modes of the left and right bank slopes and the influence of aqueduct seepage on the slopes.The stability of the left and right bank slopes is analyzed and evaluated according to the corresponding failure modes and seepage effects.Using flac3d to simulate the distribution of slope stress,displacement and plastic deformation before,after,after,after,after,and after reinforcement,and provide a more powerful theory for slope reinforcement.support.The analysis of the 1-year on-site monitoring data shows that the basic slope treatment is stable after one year of operation of the aqueduct,and the evaluation results of the long-term stability of the aqueduct after reinforcement are obtained.