基于正交试验的采空区注氮参数优化及应用  

Optimization and Application of Nitrogen Injection Parameters in Goaf Based on Orthogonal Test

作　　者：刘健[1,2] 罗勇[1,2] LIU Jian;LUO Yong(Anhui University of Science and Technology,Huainan Anhui,232001;Key Laboratory of Mine Safety and High Efficient Mining Jointly Built by Province and Ministry of Education,Anhui University of Science and Technology,Huainan Anhui,232001)

机构地区：[1]安徽理工大学安全科学与工程学院,安徽淮南232001 [2]安徽理工大学煤矿安全高效开采省部共建教育部重点实验室,安徽淮南232001

出　　处：《山西大同大学学报(自然科学版)》2025年第1期99-104,共6页Journal of Shanxi Datong University(Natural Science Edition)

基　　金：国家自然科学基金资助项目[52374178];国家研发计划[2021YFC28000900]。

摘　　要：为有效解决青东煤矿854工作面采空区自然发火的问题,本文基于现场实测与正交试验的方法并采用fluent数值模拟软件进行采空区注氮参数优化。根据束管装置测定“三带”范围,研究注氮位置、注氮流量及埋管深度三因素以及所选因素的三个水平并进行正交试验,通过数值模拟软件及后处理软件将采空区三带氧气分布云图以及采空区三带分布面积占比作为评估指标。研究结果表明:当注氮位置距工作面50 m、注氮流量为1000 m^(3)·h^(-1)、埋管深度为30 m时,采空区防灭火效果最好。本研究可为后续研究矿井采空区防灭火提供思路与参考。In order to effectively solve the problem of spontaneous ignition in goaf of 854 working face of Qingdong Coal Mine,this paper uses fluent numerical simulation software to optimize the parameters of nitrogen injection in goaf based on field measurement and orthogonal test.According to the measurement of the“three zones”range by the beam tube device,the three factors of nitrogen injection location,nitrogen injection flow rate and buried pipe depth as well as the three levels of the selected factors were studied and orthogonal tests were carried out.The cloud map of oxygen distribution in the three zones of the goaf and the proportion of the distribution area in the three zones of the goaf were used as evaluation indicators by numerical simulation software and post-processing software.The results show that when the nitrogen injection position is 50m away from the working face,the nitrogen injection flow is 1000 m^(3)·h^(-1),and the buried pipe depth is 30m,the fire prevention effect of the goaf is the best.This study can provide ideas and reference for the follow-up research on fire prevention and control in mined-out area.

关 键 词：正交试验 注氮位置 注氮流量 埋管距离 数值模拟 

分 类 号：TD75[矿业工程—矿井通风与安全]