基于运动学模型的多漏口放矿规律  

Ore drawing rules produced by poly-drawpoints based on kinematic model

作　　者：陶干强[1] 任青云[1] 马娇阳[2] 

机构地区：[1]南华大学核资源与核燃料工程学院,湖南衡阳421001 [2]东北大学资源与土木工程学院,辽宁沈阳110004

出　　处：《煤炭学报》2012年第3期407-410,共4页Journal of China Coal Society

基　　金：湖南省自然科学基金资助项目(07JJ3090)

摘　　要：介绍了放矿运动学模型的基本原理。分析了根据运动学模型得出的放出体与实际放出体不相符的原因,并指出了放矿运动学模型的使用范围。改进了散体空位扩散系数DP的取值方法,并推导了二维和三维问题的速度场方程、颗粒移动迹线方程以及放出体方程等。在此基础上,建立了描述多漏口放矿时的矿岩移动规律的数学方程。根据该理论可确定多漏口放矿时的松散矿岩移动迹线,放出体以及矿石残留体形态,可为崩落法采场设计、采场结构参数优化等提供理论参考。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.

关 键 词：运动学模型 多漏口放矿 放矿理论 放矿口 放出体方程 

分 类 号：TD853.36[矿业工程—金属矿开采]