School of Mechanics and Civil Engineering,China University of Mining and Technology-Beijing
School of Energy and Mining Engineering,China University of Mining and Technology-Beijing

风积沙充填开采可实现就地取材、变废为宝,实现煤矿开采与风积沙治理的协同处理。目前,风积沙充填主要应用于公路下伏采空区充填、煤矿充填开采及金属矿充填开采;在充填工艺方面,开发了采空区注浆投沙、固体充填开采、高水充填开采以及胶结充填开采等;在充填技术方面,采用了长壁式充填开采、条带式充填开采和巷式充填开采等。关于风积沙胶结材料性能研究集中于料浆流动性与充填体强度方面。通过分析不同配比与养护时间下风积沙胶结料浆的流变特性,以及采用聚丙烯纤维对风积沙充填体进行韧性改良,发现风积沙胶结料浆流变参数随养护时间而增加,纤维的加入显著改善了风积沙充填体的脆性特征。

Using aeolian sand(AS) for backfilling can realize local material extraction and turn waste into treasurethe, and realize coordination of green mining and AS control. The AS filling mining is mainly applied to the backfilling of goaf under Highway,backfilling mining of coal mine and metal mine. Grouting and sand injection in the goaf,solid backfilling mining,high water backfilling mining and cemented backfilling mining are developed. Long wall backfilling mining,strip backfilling mining and roadway backfilling mining are adopted. The research on the properties of cemented AS backfilling materials focused on slurry fluidity and backfill strength. In this paper,the rheological properties of ce mented AS slurry with different proportions and curing times are analyzed,and cemented AS backfills are toughened by using polypropylene fiber. The results showed that the rheological parameters of ce mented AS slurry increased with the curing time,and the addition of fiber significantly improved the brittleness characteristics of cemented AS backfills.

国家自然科学基金(52174095);博士研究生拔尖创新人才培育基金(BBJ2023054)

王树帅,岳中文,康一强,等.风积沙充填开采应用现状与材料性能研究[J].矿业科学学报,2024,9(2):217-232.

WANG Shushuai,YUE Zhongwen KANG Yiqiang,et al. Research on the application status and material properties of aeolian sand filling mining[J].Journal of Mining Science and Technology,2024,9(2):217-232.