裸脚式稀土矿山原地浸矿的边坡稳定性分析

发布时间：2018-05-02 06:00

本文选题：裸脚式稀土矿山 + 原地浸矿　；参考：《工程地质学报》2017年01期

【摘要】：采用Soil Vision软件,利用测试的矿体和表层黏土的物理力学参数,分析原地浸矿的渗流过程和计算边坡安全系数。现场监测试验矿块的浸润线和裂缝宽度发展,验证了数值计算结果是合理的。根据试验矿块的边坡剖面形状,结合原地浸矿工艺特征,建立了简化模型,分析了导流孔和收液巷道对边坡稳定性的控制作用。数值计算和试验结果表明:当导流孔收液率小于13.35%时,导流孔对边坡安全系数影响很小;当导流孔收液率为13.35%~15.8%时,边坡安全系数随收液率近似成线性增加;对于水平长度为42m的边坡,收液巷道与出渗面距离为12~24m时,收液巷道对控制边坡失稳的作用发挥得最充分。
[Abstract]:By using Soil Vision software and the physical and mechanical parameters of ore body and surface clay, the seepage process of in-situ leaching is analyzed and the safety factor of slope is calculated. The field monitoring tests show that the wetting line and crack width of the ore block are developed and the numerical results are reasonable. Based on the profile of the slope of the test ore block and the characteristics of in-situ leaching process, a simplified model was established, and the control effect of the diversion hole and the liquid-collecting roadway on the slope stability was analyzed. The results of numerical calculation and test show that when the intake rate of diversion hole is less than 13.35, the influence of diversion hole on slope safety factor is very small, and when the liquid recovery rate of diversion hole is 13.35 ~ 15.8, the slope safety factor increases linearly with the liquid recovery rate. For the slope with 42m horizontal length, when the distance between the liquid-collecting roadway and the seepage surface is 12m, the liquid-collecting roadway plays the best role in controlling the slope instability.
【作者单位】：江西理工大学建筑与测绘工程学院;江西理工大学工程研究院;
【基金】：国家自然科学基金项目(51264008,41602311) 江西省自然科学基金(20151BAB206023,20133ACB20003) 江西省教育厅科技落地计划项目(03904)资助
【分类号】：TD854.6

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