优化传热性能的改良注泥浆灭火技术  

Research on the improved mud injection fire extinguishing technology based on heat transfer performance optimization

作　　者：郭金义 GUO Jinyi(Shigetai Coal Mine,China Energy Shendong Coal Group Co.,Ltd.,Yulin,Shaanxi 719315,China)

机构地区：[1]国能神东集团有限责任公司石圪台煤矿,陕西省榆林市719315

出　　处：《中国煤炭》2023年第S02期113-118,共6页China Coal

摘　　要：注入泥浆防灭火技术以其适用性强、材料来源广泛、实施工艺简单成为最为常见的矿井防灭火技术。为了提高现有矿井注泥浆灭火技术的应用效果,基于优化传热系数影响水分散失改变泥浆黏度的设想,通过不同水土比分析了注泥浆技术对岩石裂隙充填效果,在确定最优水土比的基础上通过不同铜金属粉末添加量分析了优化传热性能对泥浆水分散失情况与沸腾作用的影响,模拟了不同传热性能泥浆浆体注入模型后的充填效果与物理模型降温效果,实验证明,提高泥浆浆体传热性能可以进一步改良浆体对火区裂隙的充填效果、增加火区温度下降速率,达到低黏度注入高黏度滞留、大幅度散热短时间降温的技术目的,从而实现改善现有注浆灭火技术的效果。In order to improve the application effect of existing mine mud injection fire extinguishing technology,based on the idea of optimizing heat transfer coefficient to affect water loss and change mud viscosity,the filling effect of mud injection technology on rock fractures was analyzed with different water-to-soil ratios.On the basis of the optimal water-to-soil ratio,the influence of optimizing heat transfer performance on water loss of mud and boiling effect was analyzed under different copper metal powder additions,the filling effect of slurry with different heat transfer properties after injecting into the model and the cooling effect of the physical model were simulated.The experiment proved that improving the heat transfer performance of slurry could further improve the filling effect of slurry on the cracks in the fire zone,increase the rate of temperature decline in the fire zone,achieve the technical purpose of low viscosity injection and high viscosity retention,large heat dissipation and short time cooling,so as to improve the effect of the existing grouting fire extinguishing technology.

关 键 词：铜金属粉末 传热性能 充填效果 降温幅度 

分 类 号：TD753[矿业工程—矿井通风与安全]