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Kangjiawan mine deep difficult mining body stope stability and safety of mining technology

Author: CaoGang
Tutor: WangXinMin
School: Central South University
Course: Safety Technology and Engineering
Keywords: Difficult mining body Retaining the top seam Stability ANSYS Stope structure parameters
CLC: TD32
Type: Master's thesis
Year: 2008
Downloads: 348
Quote: 5
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Abstract


Underground mining is a very high-risk operation , stope stability or direct impact on the safety of the personnel and equipment of the mining production . Orebody Geology mine deep , Kangjiawan , investigation and testing of physical and mechanical properties of the rock and minerals based on the use of large - scale finite element software ANSYS analysis of the deep of Kangjiawan mine the difficult mining body stope stability and security mining technology , mainly the research results are as follows : through a wide range of on-site investigation and testing , based on the master of mining engineering geology, mining technology process conditions to carry out the stability evaluation of mine goaf roof ; 2 . Kangjiawan mine the physical and mechanical parameters of the main ore rock indoor experiments , the physical and mechanical parameters were measured ; commonly used for domestic and foreign reserve pillar bolt retaining top cut top measures leave the top and the pre- injection bolt retaining the top different fracture zone control methods are compared , combined with deep Kangjiawan mine roof strata part of the lot is not solid, no actual solid bed thickness , and evaluation studies on a variety of common roof control measures ; 4 . geotechnical elastoplastic constitutive relation summary , a brief description of the Drucker-Prager model and its selection of the model parameters . Details in ANSYS simulation analysis of nonlinear mechanical behavior of rock and soil , and through a specific project examples to illustrate how to use ANSYS numerical simulation analysis on goaf stability problems , its results in the project application ; using three-dimensional finite element analysis software , to simulate the different mining stope span , overhead guard support , stress - side pressure coefficient changes of a variety of factors , the main stress of the surrounding rock deformation mechanical stability of the plastic zone , security rate status indicators comparative analysis of different stope structure parameters , obtained stope structural parameters and roof limit exposed area ; 6 on the basis of the above study , for the roof unstable tilt in the thick body of difficult mining mining method .

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CLC: > Industrial Technology > Mining Engineering > Mine the pressure and support > Rock pressure and rock movement
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