无底柱分段崩落法回收指标与结构参数关系  

Relation between recovery index and structure parameter of non-pillar sublevel caving

作　　者：张国联[1] 邱景平[1] 宋守志[1] 

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110004

出　　处：《辽宁工程技术大学学报（自然科学版）》2004年第4期436-438,共3页Journal of Liaoning Technical University (Natural Science)

基　　金：国家"十五"科技攻关项目 (2001BA609A-10)

摘　　要：无底柱分段崩落法自上而下逐分段多分段回采,各分段矿石回收指标随着结构参数变化而有较大不同。通过不同进路间距、不同放矿步距下的多分段放矿实验,得到了各结构参数下的各分段回收指标,并用 Matlab 编程对分段回收指标与结构参数的关系进行了回归分析,得出了岩石混入率、纯矿石回收率、回收率与分段、放矿步距、进路间距之间的回归方程,阐明了不同分段结构参数对回收指标的影响。Because non-pillar sublevel caving adopts multitude sublevel mining with top-down, the ore recovery index of every sublevel has much diversity with structure parameter diversity. The paper gets every sublevel recovery index of diversity structure parameter through multitude sublevel drawing experiment in the condition of diversity drift interval and drawing pace. Moreover, the paper has made regression analysis of the relation between sublevel recovery index and structure parameter with Matlab program. The regression equation had been calculated, which indicates the relation of sublevel, drift interval, drawing pace and rate of rock drop-in, rate of undiluted ore recovery, rate of ore recovery. In the end, the paper demonstrates the influence of the structure parameter of diversity sublevel on recovery index.

关 键 词：崩落法 回收率:岩石混入率:进路间距 放矿步距 

分 类 号：TD823[矿业工程—煤矿开采]