地下矿山爆破后危险有害气体运移规律及浓度预测分析  

Prediction and analysis of dangerous and harmful gas migration law and concentration after blasting in underground mine

作　　者：姚锡文[1] 宋金来 许开立[1] YAO Xiwen;SONG Jinlai;XU Kaili(School of Resources&Civil Engineering,Northeastern University,Shenyang 110819,China)

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110819

出　　处：《中国矿业》2023年第11期109-115,共7页China Mining Magazine

基　　金：国家重点研发计划项目资助(编号:2021YFC3001300)。

摘　　要：地下矿山采掘作业的爆炸过程中会产生对人体危害非常大的有毒有害气体污染物。为探究有毒有害气体污染物浓度运移规律及气体浓度降至安全界限所需时间,利用通风模拟软件Ventsim、数据处理平台SPSSPRO以及回归预测分析方法、灰色预测模型对地下矿山爆破后产生的危险有毒有害气体运移情况进行了模拟研究分析。研究结果表明:污染物浓度变化曲线分为上升区、下降区和缓下降区;经数据拟合后,得出下降区中污染物浓度变化服从指数分布,并得出了具体的浓度衰减公式;经灰色模型预测和SPSSPRO平台预测分析后,得到了灰色模型预测反应式,得出了矿山爆破后有毒有害气体浓度降至安全界限浓度所需时间为65 min,为矿山爆破后工作人员再次进入工作面所需时间提供理论基础。In underground mining operation,toxic and harmful gas pollutants will be produced in the process of explosion,which is very harmful to human body.In order to explore the migration law of toxic and harmful gas pollutants concentration and the time required for gas concentration to fall to the safe limit,ventilation simulation software Ventsim,data processing platform SPSSPRO,regression prediction analysis method and grey prediction model are used to simulate and analyze the migration of dangerous toxic and harmful gases produced after blasting in underground mine.The results show that the pollutant concentration curves can be divided into rising zone,falling zone and slow falling zone.After data fitting,it is concluded that the pollutant concentration variation in the declining area follows exponential distribution,and the specific concentration attenuation formula is obtained.After the prediction and analysis of grey model and SPSSPRO platform,the prediction equation of grey model is obtained.It is concluded that the time required for mine to fall to the safe limit concentration is 65 min,which provides a theoretical basis for the time required for mine workers to re-enter the working face after blasting.

关 键 词：地下矿山 有毒有害气体污染物 爆破 Ventsim软件 回归分析 灰色预测模型 

分 类 号：TD853[矿业工程—金属矿开采]