Comparison and Application of Two types of Filling Gel to Prevent Spontaneous Combustion at the Region where Top-Coal Caves above Entry

• DOI: 10.1051/matecconf/20166707015
• Publication Date: 2016-07-29T06:38:25Z
• Authors: Yuhuai Wang; Hang Suo; Yao Shan; Bo Yu; Erxiao Liu; Fei Hou
• Keywords: Spontaneous Combustion

Two types of gel were developed, by taking fly ash and foaming cement as aggregate, which is usually used filling material at the region where top-coal caves above coal entry in Jinggezhuang mine, adding high molecular polymer bio-gel additive. Sweating rates two under various matching ratio temperature tested. And then sweating water retention gels calculated, based on which, optimized ratios, determined. Viscosity indexes two-type different ratios The determined according to indexes, rate viscosity. experiments implemented evaluated site, mine. results show that has a good achievement preventing spontaneous combustion Region Top-Coal Caves entries. It promising, economically environmental friendly, valuable popularization mines.