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The Theory and Developing of the Program of 3-D Network Modeling for Random Discontinuities

Author: TanShuHong
Tutor: XuNengXiong
School: Chinese Geology University (Beijing)
Course: Geotechnical Engineering
Keywords: Stochastic structure surface Three-dimensional network simulation Layer density Probability and Statistics Monte Carlo
CLC: TU452
Type: Master's thesis
Year: 2010
Downloads: 161
Quote: 0
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Abstract


Pluton experienced the geological repeatedly occur in certain geological environments , and has undergone deformation and failure of certain ingredients and unique structure of geological body . Rock mass memory in different causes and different characteristics of the structure surface structure surface cut into the rock mass morphology varies vary in size, composition of different rock , rock discontinuities and inhomogeneities characterized plays a key role in the control of the mechanical properties of the rock mass and stability . Random structure of the surface of the three-dimensional network simulation study the spatial geometry of the surface characteristics of the structure , First simplify the geometry of the surface structure of the disc , based on field measurements obtained structural plane spacing , trace length and other data , the use of statistics and methods of probability theory and analytic geometry of space and structure surface geometric parameters characteristic value and the probability distribution of the form , the use of Monte Carlo simulation method , to build the structure of the combination of morphology of the surface in three-dimensional space , the formation of the the structural surface three-dimensional network model . Probability distribution form the basis of previous studies , detailed summarized the basic principle of a three-dimensional network of rock mass structure surface simulation summary of the geometric characteristics of the structural surface parameters ( occurrence , spacing , trace length , etc.) according to the trace length and the relationship between the diameter size of the probability distribution function of deducing structural surface ; transverse isotropic characteristics in accordance with the structural plane , put forward the concept of layer density derived layer density formula , and the use of hierarchical simulation method to determine the structure of the position of the surface center . Probability and statistics , stochastic theory and Monte Carlo simulation based on the random structure of the surface of the three-dimensional network simulation system ( TDNSP ) , developed in Visual C 6.0 platform . The system is divided into four modules : the random number generator function fitting and testing , network model generation and visualization , model checking , to achieve a three-dimensional network simulation assumptions based on the transversely isotropic rock random structure surface , and the development of the virtual layer, virtual sectional view the virtual trace test three test methods to test the reliability of the model . Introduced in order to verify the reliability of the method , the paper as an example to highway slope Chenjiazhuang engineering , through on-site measurements and indoor data processing , random structure of the 3D network simulation system , the establishment of a three-dimensional network model of the structural surface , and from three aspects have been tested.

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CLC: > Industrial Technology > Building Science > Soil mechanics,foundation engineering > Rock ( rock ) mechanics and rock testing > Rock mechanical properties and stress theory
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