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为了解决煤矿自燃和瓦斯防治的难题,研制出煤矿用材料——凝胶泡沫.采用Ross-Miles法对不同发泡剂进行比较,筛选出一种使用量少、发泡能力强的凝胶泡沫用发泡剂,0.3%～0.5%的使用量发泡高度可达22cm以上.配制出成胶时间可控、凝胶强度大的胶凝剂和交联剂.实验结果表明:凝胶泡沫稳定时间长,在常温常压下10d不脱水,增加了防灭火效果的耐久性;结合凝胶和泡沫的封堵能力,能有效的阻止瓦斯从煤体中释放.通过阻化实验表明,凝胶泡沫能有效的减缓煤的氧化放热速率,抑制煤温的升高,阻化率达到62.23%,很好的抑制了CO在自燃过程中的释放量.
In order to solve the problem of coal spontaneous combustion and gas prevention and control, a material for coal mine, gel foam, was developed.The comparison of different foaming agents by Ross-Miles method, screened out a kind of gel foam Using foaming agent, the foaming agent can be foamed up to more than 22cm with the dosage of 0.3% ~ 0.5%, and the gelling agent and crosslinking agent with controllable gelling time and high gel strength are prepared.The experimental results show that the gelation foam is stable Long time, does not dehydrate at normal temperature and pressure for 10 days, increases the durability of fire-extinguishing effect, can effectively prevent the gas from being released from the coal body by combining the sealing ability of the gel and the foam, and shows that the gel Foam can effectively slow down the rate of coal oxidation and heat release, inhibit the increase of coal temperature, and the resistivity reaches 62.23%, which can well suppress the release of CO during spontaneous combustion.