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在有色金属矿山及贵金属矿山中,尾砂充填采矿法日益受到重视,所占比重也是有增加的趋势。但目前对尾砂充填体的工程力学性质研究仍尚感不足,一些矿山充填体的抵抗外载荷能力较低,这不利于用来控制采场围岩的压力及改善矿石损失贫化指标。我们用三轴剪力仪来研究影响抗剪强度的因素,在此基础上来探讨应力与应变的关系。所得出的结论希望有助于改善充填体的力学性质。
In non-ferrous metal mines and precious metal mines, the tailings sand mining mining law has been given more and more attention, the proportion of which is also an increasing trend. However, the engineering mechanics properties of the tailings filling body are still not enough. Some of the mine filling bodies have a low resistance to external load, which is not conducive to controlling the pressure of surrounding rock and improving the index of ore loss and depletion. We use triaxial shear force to study the factors that affect the shear strength, and on this basis to explore the relationship between stress and strain. The conclusions drawn hope to help improve the mechanical properties of the filling body.