cemented 脉石装填的可能性与附近热的发电厂的 Suncun 煤矿, Xinwen 煤组,山东,和苍蝇灰的脉石被学习,以便在大规模上并且到恢复安全煤支柱对待庞大的煤脉石。结果显示煤脉石不是一个理想的总数因为坏流动性和严肃的管子穿的脉石的管道严肃流动装填,而是如此的劣势能被苍蝇灰的增加克服。如果到到脉石的苍蝇灰的水泥的集体比率是 1:4:15 和稳固的材料活动范围 72%75% 的集体部分,象力量和除去的比率和泥浆的尖特征那样的优秀索引能满足 cemented 装填的要求,这被同意如果到到脉石的苍蝇灰的水泥的集体比率是 1:4:15 和稳固的材料活动范围 72%75% 的集体部分。哈登机制建议 cemented 脉石充满有更高的中间和长期的全面力量。
Possibility of cemented gangue backfill was studied with gangue of Suncun Coal Mine, Xinwen Coal Group, Shandong, and fly ash of nearby thermal power plant, in order to treat enormous coal gangue on a large scale and to recovery safety coal pillars. The results indicate that coal gangue is not an ideal aggregate for pipeline gravity flow backfill, but such disadvantages of gangue as bad fluidity and serious pipe wear can be overcome by addition of fly ash. It is approved that quality indexes such as strength and dewatering ratio and piping feature of slurry can satisfy requirement of cemented backfill if mass ratio of cement to fly ash to gangue is 1:4:15 and mass fraction of solid materials reaches 72%-75%. Harden mechanism suggests that the cemented gangue fill has a higher middle and long term comprehensive strength.