超高水材料在巷道防灭火中的应用

Application of ultra-high water retaining material on fire prevention and extinguishment in roadway

针对矿井巷道内由于顶煤破碎冒落和煤炭复合氧化作用而引起的矿井火灾,根据超高水材料具有高结晶水特性、降温效率高、速凝早强、流动性好、工艺简单以及成本低等的特点,采用超高水材料综合灭火技术成功地治理了金地煤矿回风下山与1311回风巷及回风大巷相交处附近巷道冒顶区火灾,显著地降低了发火区周围的温度和CO等有毒有害气体浓度。研究结果表明:超高水材料进入发火区煤体后能够迅速包裹煤体,阻止煤氧复合,充填煤层裂隙,堵塞漏风通道,吸收煤体中的热量,并且超高水材料固结体最终凝结后,具有一定强度,对于围岩起到控制及加固作用。

Aimed at the mine fire caused by the breaking and falling of top coal and the coal oxygen reaction in the roadways, the ultra-high water retaining material, possessing such characteristics as high crystallized water content, high cooling rate, quick consolidation, good fluidity, simple process and low cost, was used to control the fire in the roof falling zone near the roadway of No. 1311 air return way, return airflow dip and the main air return roadway in Gemdale Coal material possessing certain strength could control and reinforce the surrounding rock. Therefore, it was shown that the ultra-high water retaining material has a good development prospect in rapid fire-extinguishment as an ideal extinguishing material.