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针对粉煤灰替代水泥的充填体强度普遍偏低和充填体脆性增大,对安全生产带来安全隐患的问题.采用粉煤灰替代水泥的胶结充填配比试验.研究结果表明:粉煤灰替代水泥的充填料浆流动性好,有利于充填料浆管道输送.但充填体强度随着粉煤灰替代量增加而降低,对于早期强度尤为突出根据金川镍矿下向进路式采矿对充填体强度要求,确定了粉煤灰最高掺入质量分数为13%.同时还对掺入粉煤灰的水泥特性和技术标准开展研究,制定掺粉煤灰水泥的技术标准,为粉煤灰在金川镍矿的安全、高效和经济的心用奠定基础.
In view of the fact that the strength of the filling body with fly ash instead of cement is generally low and the brittleness of the filling body is increased, which poses a potential safety hazard in production safety, the cement proportioning experiment with fly ash instead of cement is carried out.The results show that fly ash The filling slurry of alternative cement has good fluidity, which is good for filling slurry pipeline transportation, but the strength of filling body decreases with the increase of replacement amount of fly ash, which is especially prominent for early strength. According to Jinchuan nickel mine, Body strength requirements, identified the maximum incorporation of fly ash mass fraction of 13%. At the same time also incorporation of fly ash cement properties and technical standards to develop technical standards for fly ash cement, fly ash in the Jinchuan nickel mine safety, efficiency and economic heart to lay the foundation.