| Landslide is a phenomenon that the rock and soil of the slope fall down along a certain weak surface or weak belt under the action of gravity,which is combined with the mud rock flow,volcano and earthquake as a global geological disaster.In the global scope,almost all of the mountain and hilly areas with human habitation and engineering activities have almost all the occurrence of landslides.The typical provinces as a hilly landform in Zhejiang Province,hilly land area accounted for 70.4%,with the economic and social development,infrastructure construction has made considerable progress,human engineering activities continue to expand in mountainous areas,landslides and other geological disasters have occurred,the contradiction between people and land has become increasingly prominent in the process of landslide study on stability analysis and control engineering research more and more get the attention of the people.The stability analysis of landslide is the basic work of landslide monitoring,early warning,prevention,treatment and treatment.Taking the Midas GTS NX software as the method and taking the landslide in Shangyu District of Shaoxing as the research object,the numerical simulation study on the stability and the design of the landslide is carried out.The details are as follows:(1)Through the analysis of the investigation report,the landslide investigation report and other data,combined with the actual situation of the scene,expounds the basic characteristics of the landslide geological environment and landslide.The geological structure characteristics of landslide,the developmental process and the failure mechanism is studied.(2)According to the engineering geological survey data of landslide,the suitable physical parameters of rock and soil are selected,and the stability of landslide is calculated and analyzed under the two condition of natural and rainfall by the transfer coefficient method.(3)Using finite element analysis software Midas GTS NX,created two kinds of three-dimensional geological model of the landslide,a false traditional three-dimensional model,the 3D model and through the expansion of typical section,another is close to the true three-dimensional geological model of landslide real geometry,and of a landslide numerical simulation of natural rainfall and condition.From the stability evaluation,strain analysis,displacement analysis,stress analysis of landslide stability is researched widely,and the numerical simulation results and the actual situation of landslide are compared,found the true three-dimensional geological model can reflect the three-dimensional characteristics of landslide failure,and the situation is more in line with.At the same time,the calculation results of two different models are compared,and the reasons for the similarities and differences are analyzed.(4)According to the stability of the landslide,the landslide according to the design principles and related standards,put forward the control design scheme based on retaining structure based on governance,after the landslide was simulated using Midas GTS NX software,numerical simulation results show that the adopted control measures,the safety factor of landslide is greatly improved,to achieve specification that retaining scheme effectively play a role in improving the stability of the landslide. |
