泡沫砂浆充填体力学特性及其应用研究

为了将泡沫充填技术成功地应用于地下充填矿山,以金川F17以东采场的开采技术条件,开展了泡沫砂浆充填体的物理力学特性试验研究。在此基础上,采用数值模拟技术,进行泡沫砂浆充填体充填采场的作用机理与充填效果研究。现场实践表明,泡沫砂浆充填体具有流动性好、充填质量高、成本较低等优点。理论分析结果显示,对于金川F17以东采场围岩条件,采用与普通充填体相同灰砂比,泡沫砂浆充填技术不仅提高充填体的力学参数,还能够实现较高的充填接顶率,从而有效控制采场岩层移动,确保采场的安全。由此表明,泡沫砂浆充填技术在金川F17以东采场的充填法采矿是可行的,矿山正在进行采场的工业试验研究。

Research on the Mechanical Prosperities of Foamed Mortar Backfill and Its Application

In order to apply the foamed backfill to the underground cutting and filling mine successfully,based on the mining technical condition of stope east of F17,Jinchuan Corporation,the laboratory tests and in-situ experiments on the physical and mechanical properties were carried out.Then,the mechanics and backfilling effect of foamed backfill were studied by numerical methods.The field test results show that the foamed concrete filling material has such characteristics as good fluidity,high filling quality and...