Sjaiaying Iron Slope Stabvility Analysis And Optimization Of Engineering Parameters

With the rapid development of China's national economy. Construction projects have been carried outlarge-scale.In the construction process.these projects will inevitably involve the excavation of rock and soiland the embankment. This forms a large number of artificial slope. Particularly in mining engineering.Withthe technological upgrading of human exploitation. the height of the excavation pit slope have beenincreasing. This requires us making stability analysis accurately after excavation of rock slope.In open pit mining project. The main factors of rock slope stability include Lithology of theslope,occurrence of rock mass discontinuity,hydrological conditions and the shape characteristics of theslope. In this paper, Analyse N32 profile slope stability of Sijiaying Iron Mine I Stope as a typical slope.First,the artical analyses the slope failure mode of Sijiaying Iron Mine .Accoarding to the fieldinvestigation of I stope,the author has a overall understanding to the geologic structure and strataoccurrence of the stope,which provide necessary data to the stability study of the slope of N32 section.Thenthe author collects plentiful examples of rock slpoe,and take them as the sample of the study.A sampledatebase is set up by using BP neural network to study these samples.Qualitative analysis is made on somemain influencing factors such as the lithological characters of Sijiaying Iron Mine slope,strata occurrenceand groundwater condition.Then these enfluencing factors are leaded to the network input layer as inputvariable by means of quantitilized method,the failure mode of slpoe is taken as output variable.Finally,thefailure mode of this slpoe is identified as dog-leg failure mode.Application of Fast Lagrangian Analysis (FLAC) to analyse the slope stability. The results show thatthe slope instability and failure occurs. failure modes and the predict results of BP neural network isconsistent. According to failure mode and then choose a reasonable limit equilibrium method(Sarma)calibrate the slope safety factor. The results of Sarma and Numerical simulation of FLAC is consistent.Select the appropriate reinforcement through analyzed the failure situation of the N32 profile slope,This program is prestressed cable to anchor. and in the process of selecting the program design ofprestressed cable parameters were optimized. Then, by FLAC-2D numerical simulation to calculate theslope after anchored, Analysis of the stability of slope after reinforced in order to verify the reinforcementdesign is reasonable and feasible. The results showed that the safety factor of Sijiaying iron slope afterreinforced meet regulatory requirements, And to ensure the stability of the slope. Through carried out andcompleted the gradual slope stability studies, you can have a thorough understanding of stability factors ofrock slope and situation of the slope failure, but also for the rock slope stability analysis methods andparameters selected to provide a reference.