Hydro-Jex® is a new enhanced method for heap leach treatment with significantly higher mineral recovery. In this case study at the Los Filos Mine in Mexico, the Hydro-Jex operation is evaluated for heap leach stability. This is pursued by numerical modeling of the heap leach pad stability and well monitoring of the phreatic surface before and after the Hydro-Jex operation. Experimental and numerical results both indicate an improvement in mineral processing under the influence of Hydro-Jex. Numerical results show an insignificant decrease and a significant increase in stability during and after Hydro-Jex injection application, respectively. The integrity of the liner is maintained in both cases. The zonal injection pressure, operationally below the overburden pressure, is found to be negligible compared with the dimensionality of the heap, and stability of the structure is not exposed to any significant risk, even up to 25% above overburden pressure. Furthermore, heap leach factor of safety increases after Hydro-Jex application. This is attributed to breakdown of the water solution build-up and thus a decrease in the phreatic surface depth below the top of the pad. It is suggested that injection wells be drilled, based on thorough geophysical data, in locations where overcompaction of heap material results in water solution build-up and pore pressure enhancement. Compared with traditional heap leaching, the Hydro-Jex technique not only expedites mineral processing by increasing chemical kinetics extraction but also increases the stability of the heap by unclogging drains.

中文翻译：

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Hydro-Jex 操作对堆浸垫稳定性的影响：墨西哥中部堆浸操作的案例研究

Hydro-Jex® 是一种新的增强型堆浸处理方法，可显着提高矿物回收率。在墨西哥 Los Filos 矿的这个案例研究中，对 Hydro-Jex 操作的堆浸稳定性进行了评估。这是通过在 Hydro-Jex 操作之前和之后对堆浸垫稳定性的数值模拟和对潜水面进行井监测来实现的。实验和数值结果都表明在 Hydro-Jex 的影响下矿物加工得到了改进。数值结果分别显示在 Hydro-Jex 注射应用期间和之后稳定性的显着降低和显着增加。在这两种情况下都保持了衬垫的完整性。与堆的维数相比，在操作上低于上覆岩层压力的区域注入压力可以忽略不计，结构的稳定性不会受到任何重大风险，甚至高达上覆压力的 25%。此外，Hydro-Jex 应用后堆浸安全系数增加。这归因于水溶液积聚的分解，从而导致垫子顶部以下的潜水表面深度减少。建议根据完整的地球物理数据，在堆料过度压实导致水溶液积聚和孔隙压力增加的位置钻注井。与传统的堆浸相比，Hydro-Jex 技术不仅通过增加化学动力学提取来加速矿物加工，而且还通过疏通排水管来增加堆的稳定性。此外，Hydro-Jex 应用后堆浸安全系数增加。这归因于水溶液积聚的分解，从而导致垫子顶部以下的潜水表面深度减少。建议根据完整的地球物理数据，在堆料过度压实导致水溶液积聚和孔隙压力增加的位置钻注井。与传统的堆浸相比，Hydro-Jex 技术不仅通过增加化学动力学提取来加速矿物加工，而且还通过疏通排水管来增加堆的稳定性。此外，Hydro-Jex 应用后堆浸安全系数增加。这归因于水溶液积聚的分解，从而导致垫子顶部以下的潜水表面深度减少。建议根据完整的地球物理数据，在堆料过度压实导致水溶液积聚和孔隙压力增加的位置钻注井。与传统的堆浸相比，Hydro-Jex 技术不仅通过增加化学动力学提取来加速矿物加工，而且还通过疏通排水管来增加堆的稳定性。建议根据完整的地球物理数据，在堆料过度压实导致水溶液积聚和孔隙压力增加的位置钻注井。与传统的堆浸相比，Hydro-Jex 技术不仅通过增加化学动力学提取来加速矿物加工，而且还通过疏通排水管来增加堆的稳定性。建议根据完整的地球物理数据，在堆料过度压实导致水溶液积聚和孔隙压力增加的位置钻注井。与传统的堆浸相比，Hydro-Jex 技术不仅通过增加化学动力学提取来加速矿物加工，而且还通过疏通排水管来增加堆的稳定性。