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Comprehensive Evaluation of Rock Stability Mining Residual Ore in Daye Pu-de Iron Mine

Author: YeZuo
Tutor: OuYangZhiHua
School: Wuhan University of Science and Technology
Course: Geotechnical Engineering
Keywords: Point load index test Comprehensive Assessment of Stability RMR rock mass classification Q taxonomy Three-dimensional finite element numerical simulation
CLC: TD861.1
Type: Master's thesis
Year: 2010
Downloads: 64
Quote: 1
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Abstract


The mining engineering geology, hydrogeology situation and mine production status , a detailed analysis of to draw mining remnant ore distribution ; orebody -195m -177m depth selected rock samples , the use of point load index test estimates uniaxial compression and uniaxial tensile strength of the rock mass , in order to get the rock mass physical and mechanical parameters ; determine rock quality indicators RQD , and joint spacing drawn through the mine field observations , the jointed surface roughness , joints inclination and groundwater other parameters ; based on various parameters derived above , on the S \u0026 P iron ore RMR rock mass classification and Q classification , to judge the overall stability of iron ore Earn ; RMR rock mass classification and Q taxonomy based on the overall stability of the results with the three-dimensional finite element numerical simulation II, the main ore body , the stability of the results of the analysis and comparison II ' numbers and II 3 orebody remnant ore stoping draw Earn residual iron ore mine stoping adopt a comprehensive evaluation of the stability of the empty area when the security prerequisite to maximize the recovery of ore resources . In this paper, to assess the feasibility and to ensure the security of remnant ore recovery Earn residual iron ore mine stoping has significance . The analysis results show that the RMR and Q system classification concluded with ordinary iron ore mining stability coincide . The above two empirical evaluation method and three-dimensional finite element numerical simulation of theoretical methods combined , more accurate analysis of the stability of the rock mass , prediction and comprehensive evaluation of the rock mass stability play a certain reference .

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CLC: > Industrial Technology > Mining Engineering > Mining > Metal ore mining > Ferrous metal mining > Iron
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