自然崩落法放矿的地表沉陷预计研究  

Surface Subsidence Prediction for Oredrawing by Block Caving

作　　者：邢东升[1,2] 刘晓明[1] 朱忠华[3] 王李管[1] 

机构地区：[1]中南大学资源与安全工程学院,湖南长沙410083 [2]中铝矿业有限公司,河南郑州450041 [3]南华大学核资源工程学院,湖南衡阳421001

出　　处：《矿冶工程》2017年第2期20-23,27,共5页Mining and Metallurgical Engineering

基　　金：国家自然科学基金(51604301;51274250);金属矿山安全与健康国家重点实验室开发基金(2015-JSKSSYS-01)

摘　　要：利用自然崩落法放出矿柱与开采工作面的相似性,建立自然崩落法放矿的地表沉陷预计物理模型,将物理模型与放矿计划相结合,把计划周期内放出矿柱视为开采沉陷预计中的条带状工作面,将多漏斗放矿下的地表沉陷预计转化为条带状工作面开采的地表沉陷预计,使用概率积分法进行地表沉陷预计。设计地表沉陷预计数据结构和预计流程,并在数字矿山软件平台上用C++编程语言予以实现。实践表明:该方法方便地实现了自然崩落法多漏斗放矿下的地表沉陷预计。Based on the similarity between pillars withdrawn by block caving method and on working face,a physical model of surface subsidence prediction is established for oredrawing by block caving method, with the practical oredrawing scheme integrated into the physical model. The withdrawn pillar volume during a planned period of time is regarded as the belt working face within the predicted mining subsidence,and the predicted surface subsidence by oredrawing with multi-craters was transferred to the surface subsidence predicted for mining on belt working face. Then,the surface subsidence can be predicted with probability integral method. Data structure and forecast flow are designed and the process is implemented on the software platform of digital mine using C++programming language. The practical application indicates this method is convenient to predict the surface subsidence in case of oredrawing from multi-craters.

关 键 词：放矿 地表沉陷 随机介质 概率积分法 自然崩落法 

分 类 号：TD325[矿业工程—矿井建设]