Ore drawing rules produced by poly-drawpoints based on kinematic model
Abstract：The ore-drawing theory based on kinematic model was introduced and the derivation of the kinematic model equation was reviewed.And reasons for the theoretical drawbody shape mismatching with the actual were discussed.Moreover,the application scope of the ore-drawing theory based on kinematic model was pointed out.The determining method of bulk vacancy diffusion coefficient was improved.Then a revised version of the kinematic model was developed and equations for the velocity field,granular flow streamlines,and drawbody were derived for both two-dimensional and three-dimensional problems.Then,the mathematical equations for complex configurations in which the flow was produced by two drawpoints in simultaneous were established.Based on it,the movement path line,the shape of drawbody and shepe of ore residual body of ore drawing rules produced by poly-drawpoints could be determined by this theory.Thus,the knowledge of the revised version of the kinematic model can be used to optimize structural parameters of the stope as well as in the design of caving stope.
Keywords：kinematic modelore flow in simultaneous extractionsore-drawing theorydrawpointdrawbody equation
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 407-410 )