露天排土场形成的控制因素与物料分异规律研究  

Study on Controlling Factors and Material Differentiation Rule in Opencast Dump

作　　者：左文喆 王斌海 汪洋 程紫华 

机构地区：[1]华北理工大学矿业工程学院,河北唐山063009

出　　处：《金属矿山》2017年第1期154-159,共6页Metal Mine

基　　金：河北省自然科学基金项目(编号:D2011209071;E2013209328);唐山市科技计划项目(编号:14130245B)

摘　　要：排土场的形成是一个复杂的过程,是无数个废石"锥状体"在多种因素下共同控制下的结果。通过级配分析、粒度统计、分形统计等技术手段,分析了控制排土场形成过程中自然分选、填充作用、侧向分散作用、干涉作用、地基坡度等影响因素,研究了排土场形成演化过程中的物料分异规律。研究表明:自然分选、填充作用、侧向分散作用、干涉作用控制了排土场物料分异,而地基坡度、倾倒高度、物料丰富程度控制了废石"锥状体"结构体的形态。另外,排土场在滚动、跳跃或滑动过程中会存在粒度分异、分形分异、长轴分异、厚度分异等物料分异现象,其形成演化规律控制了物料分异规律。研究结果对研究排土场变形、破坏、滑坡、泥石流、滚石等灾害可提供一定的理论依据。The formation of dump is a complex process,is a result of common control of a number of waste rock ＂cone＂ under a variety of factors. Thus the influencing factors of natural selection, filling effect, lateral dispersion, interaction, ground slope are analyzed during the process of controlling the dump forming, by the means of the gradation analysis, grain statistics, fractal statistics, and the material differentiation rule in the process of the formation and evolution of the dump is investigated. The research have shown that natural selection ,filling effect, lateral dispersion, interference have controlled the material differ- entiation of the dump ,and foundation slope ,dumping height,material abundance have controlled the form of waste rock ＂cone＂ structure. There exists material differentiation phenomenon of particle size fractionation, fractal differentiation, differentiation of long axis, thickness differentiation during the process of rolling, jumping and sliding of the dump. Its formation and evolution have controlled the material variation rule. The results providing a theoretical basis for studying these disasters of dump deform- ation, destroy,landslide, debris flow, rolling stone, etc..

关 键 词：排土场 锥状体 物料分异 形成演化 

分 类 号：TD359.1[矿业工程—矿井建设]