Forecast Method Research Of Slope Three-dimensional Entity Deformation

The main characteristic of mine slope is the tectonic evolution process of its geometry, load and engineering geological as extending the deep in the exploitation. How to accurately grasp the development trend of slope stable state in the evolution process, is the precondition of ensuring safety in production and avoiding disaster. Purpose of the study of slope stability is to predict the slope instability destruction time, sliding scale and provide theoretical basis for disaster level, through quantitative description and evaluation of slope stability. As a result, the research of slope deformation prediction and display, the slope stability analysis and evaluation, based on which the reasonable disaster prevention and mitigation measures can take to provide reliable guidance and security of engineering safety construction and production. This topic research has important theoretical and practical significance.This paper choosing Shanghang, Fujian Zijin mining slope engineering as the research object, considering the site environment and geological data, based on the 3D entity of slope deformation prediction theory, the matter-element extension theory and GIS geographical information technology, studies the present situation of the stability of the slope though the theoretical calculation and numerical simulation. The main research content is as follows:(1) Three-dimensional entity slope deformation prediction and research. According to Zijin slope deformation monitoring data, based on the theory of three-dimensional entity to predict slope, the Matlab program is compiled, the slope three-dimensional entity model is established. Fitting model parameters on the slope deformation is forecasted, and the error analysis shows that the model prediction accuracy is higher, predicted results are ideal.(2) Research of slope stability evaluation. Based on the theory of matter-element extension and the analytic hierarchy process AHP method, selection of multiple factors, which influence the stability of slope is given weight, and the slope stability evaluation of slope profile is completed. At the same time combined with numerical simulation, the stress and strain analysis judgment as a preventive science evaluation of landslide disaster is gained.(3) 3D visualization of GIS analysis and evaluation. Through the application of GIS visualization and data processing technology, three-dimensional geographic data visualization model of the Zijin mining slope is established, the deformation monitoring data is calculated by using the inverse distance interpolation method, and the whole of the slope deformation photograph is gained. It is convenient for reasonable dynamic analysis of slope stability, the deformation of different time shows that visually presented the development trend of slope deformation, and also provides the scientific basis for production safety and disaster early warning.