Mechanical Parameters Of Rock Mass And Rock Structure Modeling Of Yanqianshan Iron Mine

As geological rock experienced repeated geologic process, there would bestructure surfaces of various scale, different occurrence and diverse nature. Thesecriss-crossing structure surfaces cut the rock into different blocks. And the blocks areinteracted through structure surfaces. As a result, the rock with continuous traits turnsinto the discontinuities ones, which causes changes of the rock slope in the damageform. A variety of engineering examples have shown that the structure of the surfaceis a major factor in slope stability control.(1) In the present case, the geological conditions of the slope rock massengineering varies greatly in structure surface. Before the start of the measurement,slop rock shall be divided by mean. According to the hydrogeology and engineeringgeology condition of Yanqianshan mine.,the thesis divides it into four homogeneousareas; each homogeneous area uses the window measurement to measure and recordthe occurrence, spacing, trace length and Structural plane and the pay cut off of thewindow of the structure surface; the occurrence data measured by the district shallmake stereographic projection, then we can get the structure of the surface grouping,I zone, III zone, IV is divided into three dominant group, II District2dominantgroup; according to the size of cross-cutting relationships window and windowsurfaces and structures calculated average track length.(2) After we are clear about the The structure of the advantages of group,we shallconstruct the statistics to the each homogeneous area of structural plane geometryparameter of each group advantage,and then work out each parameter of thefrequency histogrambased on the To construct a good statistical.in accordance withtheStructural plane geometric parameter probability model empirical distribution formand style of our frequency histogram, assuming the Structural plane geometryparameters of probability model, and finally, we shall conduct tests on Assumes thatthe functional form on the basis ofNeyman Pearson Critertion, we would get theOpen-pit mine eyes mountain each homogeneous zones structural plane geometry parameter of the probability model distributions(3) By using the Monte Carlo method, a uniform distribution function on [0,1]for the sampling, there might generate A series of random Numbersbased on We havereceived structural plane geometry parameters of probability distribution form;assuming the Structural plane for disc, we could useStitch length data to calculate thestructural plane wheel diameter size；and thenUse of spacing density data to calculatethe structural plane level；after that we mayBased on measuring the size of thewindow and the structure of the surface from the disc diameter determine simulation’ssize；finally, we may acordinng to Monte-Carlo simulation，Using the previousassumptions and the generated data to construct the model of rock mass structure。(4) On the basis of structural plane geometric parameters and laboratory test datafrom rock applying the RMR and BQ rock mechanics parameter estimation method toobtain the mechanical parameters of rock slope, therefore to solve Section of thephysical and chemical parameters are difficult to calculate the slope rock massmechanics problems,and provide a significant parameter for the calculation of theYanqianshan open pit slope stability model...