中文摘要：

为了研究稀土矿体在长时间雨水渗入影响下的矿体强度变化，进行了稀土力学性质与滴定时间的关系室内三轴试验研究，通过试验数据分析得出了稀土的粘聚力随滴定时间变化的二次函数关系，这一关系式的确立为实际浸矿中稀土的强度计算和现场维护施工提供了很好的基础。稀土的抗剪切研究结果表明，强度随滴定时间的增加出现先下降后增长的趋势，其粘聚力与内摩擦角存在很强的负相关性。

英文摘要：

To study the strength variation of rare earth ore- body under the long-time rainwater infiltration, the laborato- ry triaxial experiment was carried out to study the relation of mechanical properties of rare earth ore and titration time. By analyzing the experimental data, the quadratic function rela- tionship between the cohesion of the rare earth with the ti- tration time was obtained, which provided a good foundation for the strength calculation in the actual leaching of rare earth ore and the on-site maintenance construction. Finally, the research result of shear resistance showed that the strength of rare earth decreased first and then increased with the titration time, and the cohesive stress and the angle of internal friction had a strongly negative correlation.