Study On Subsidence Law And Treatment Technology For Mining Under Riverbank

This paper selects the mining under riverbank as the main research objects, the surface subsidence laws for mining under riverbank as the research content, takes 10 th Mining Area of Bao Dian Mine as prototype, through field observations, theoretical analysis,we draw the following conclusions:(1)Analysis and study on the surface movement and deformation law for mining under riverbank in 10 th mining area of Baoian Mine. Master the surface static and dynamic laws for mining under riverbank. The parameters of the probability integral method for mining in 10 th mining area of Bao Dian Mine(2) Various linear and nonlinear model of subsidence of surface subsidence by Surface subsidence data interpolation of mining subsidence is studied by using various linear and nonlinear model.The results of the study show that, the cubic spline function model can be used to interpolate the measured data of a few missing points. BP neural network model can make full use of the observation data of measuring points. It’s effect is very good to interpolate the data of multi-missing points.(3) Make full use of the observation data of 8 working face in 10 th mining area of Bao Dian Mine. In order to obtain the surface subsidence law of ultra-full mining, the subsidence data is superimposed by using appropriate interpolation method. It’s regressive analysed that the relationship between width-depth ratio and subsidence coefficient. The result show that, it’s quadric relationship between width-depth ratio and subsidence coefficient. When width-depth ratio increases gradually, gradually increasing the subsidence coefficient; When the width-depth ratio exceeds a certain value, the subsidence coefficient tends to a certain value.(4)It’s analysed that the reason of edeg-error predicted by probability-integral method and studied the correction model of surface subsidence prediction value for mining under riverbank. The correction formula of subsidence prediction value and the scope of application is obtained.(5)According to the geological and mining conditions of 103upper08 working face, mining subsidence is predicted using the prediction parameters of probability integral method. It’s analysed that the impact of riverbank after mining 103upper08 working face using the contour map of surface subsidence, tilt, curvature, horizontal movement, horizontal deformation.(6)According to the actual situation of 103upper08 working face, a comprehensive management measures for riverbank is advanced.