Experimental Research on Inhibition Performances of the Sand-suspended Colloid for Coal Spontaneous Combustion
Serious mine fire disasters have occurred in Northwest China where there are abundant coal resources. For the shortage of water and loess, a large cost of conventional grouting slurry is needed. However, plenty of sand and fly ash resources have been found there. In order to improve the quality of sand injection and reduce the wastage of water during grouting, a kind of new compound material of sandsuspended colloid, which is composed of mineral inorganic gel and organic polymer, was developed in this paper. And the inhibition performance experiments of the sand-suspended colloid were carried out. The results show that the sand-suspended colloid efficaciously affected the oxidation characteristics above the critical temperature during the acceleration oxidation of the lignite and fat-gas coal samples and restrained the oxidation course by increasing the activation energy, so that it reduced the contents of CO and C2H4 and depressed the oxidation rate during the coal spontaneous combustion, and finally inhibited the coal spontaneous combustion.
sand-suspended colloid temperature programmed coal spontaneous combustion inhibition performance
XU Yong-liang WANG De-ming WANG Lan-yun ZHONG Xiao-xing CHU Ting-xiang
School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454003, China School School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454003, China
国际会议
The First International Symposium on Mine Safety Science and Engineering (首届矿山安全科学与工程学术会议)
北京
英文
148-157
2011-10-27（万方平台首次上网日期，不代表论文的发表时间）