凝胶泡沫防灭火材料的研制及应用

由于大倾角坚硬顶板煤层采空区地质条件复杂,漏风规律复杂多变,因而煤自燃危险性较大,必须采取有针对性的防灭火措施。通过理论分析和实验研究,确定了凝胶泡沫材料中合适的发泡剂、稳泡剂、胶凝剂、交联剂。通过实验得到凝胶泡沫材料的最佳配方为:发泡剂为月桂酸钠和SDS按2:3比例复配,浓度为0.6%;稳泡剂CMC浓度为0.1%;胶凝剂AM浓度为0.3%;交联剂MBA浓度为0.3%。经过程序升温实验和封堵实验,该凝胶泡沫具有优良的防自燃阻化性能和封堵性能。在东龙煤矿7162工作面采空区灌注凝胶泡沫材料进行防灭火。现场监测结果表明,凝胶泡沫材料有效抑制了采空区自燃,保证了安全开采。

Development and Application of Gel Foam Materials for Fire Prevention and Extinguishing

law of air 1 Because the geological conditions of coal in goal with high dip and hard roof are complex, and the eakage is complicated and changeful, so the risk of coal spontaneous combustion in goaf is higher, and need to take effective measures for fire prevention and extinguishing. Through theoretical analysis and exper- imental research, this paper determines the appropriate foaming agent, foam -stabilizing agent, gelling agent, cross - linking agent in gel foam materials. The optimum formula for gel foam materials by experimental study is ： foaming agent compound with sodium laureate and SDS at the ratio of 2：3, concentration for 0. 6% ; foam - sta- bilizing agent CMC concentration for 0. 1% ; gelling agent AM concentration for 0. 3%; cross - linking agent MBA concentration for 0. 3%. This gel foam materials have excellent inhibitor performance and sealing perform- ance for the spontaneous combustion prevention. The gel foam materials were grouted to goaf of 7162 working face in LongDong coal mine for fire prevention and extinguishing. The results in monitoring sites show that the gel foam materials had effectively restrained spontaneous combustion in goaf, and guaranteed the safety mining.