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首页> 外文期刊>Earth Surface Processes and Landforms: The journal of the British Geomorphological Research Group >An experimental and computer simulation study of erosion on a mine tailings dam wall
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An experimental and computer simulation study of erosion on a mine tailings dam wall

机译：尾矿坝墙体冲蚀的实验与计算机模拟研究

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Mine tailings dams pose a significant risk to the environment if not correctly designed, built and maintained. The effect of erosion on a back-filled and capped earthen dam wall was examined by construction of an analogue in an experimental model landscape simulator. The ability of a computer-based erosion model to simulate erosion processes on the experimental structure was examined. The experimental landscape simulator uses a rainfall simulator to create overland flow and erode an artificial soil. At the commencement of rainfall, erosion occurred rapidly with deep gullies developing on the dam wall batter. The gullies developed by downcutting, with consequent bank collapse and slumping, and followed flow lines towards their source. A physically based erosion model (SIBERIA) was used to simulate erosion on the experimental dam wall. Erosion and consequent development of the experimental structure were modelled by SIBERIA. The ability of SIBERIA to model incision and landscape development in the experimental setting was further examined by use of a simple one-dimensional experimental catchment. The laboratory experiment and computer simulations demonstrated that erosion on the tailings dam is driven by concentrated runoff and that runoff control is crucial to the long-term stability of such structures. The study demonstrates that computer-based erosion models can be used to predict how erosion occurs on the experimental landscapes examined, thus providing confidence in their use and application.
机译：如果设计，建造和维护不当，矿山尾矿坝将对环境造成重大威胁。通过在实验模型景观模拟器中构建类似物，检查了侵蚀对回填和加盖的土坝墙的影响。检验了基于计算机的腐蚀模型在实验结构上模拟腐蚀过程的能力。实验性景观模拟器使用降雨模拟器来产生地面水流并侵蚀人造土壤。在降雨开始时，侵蚀迅速发生，坝壁面糊上形成深沟。沟渠的形成是通过切割，随后导致河岸塌陷和塌陷，并沿着流线向其源头发展。基于物理的侵蚀模型（SIBERIA）用于模拟实验坝壁的侵蚀。侵蚀和随后的实验结构发展由SIBERIA建模。通过使用简单的一维实验集水区，进一步检验了SIBERIA在实验环境中对切口和景观发展进行建模的能力。实验室实验和计算机模拟表明，尾矿坝上的侵蚀是由集中的径流驱动的，径流控制对于此类结构的长期稳定性至关重要。这项研究表明，基于计算机的侵蚀模型可以用来预测侵蚀现象在所检查的实验景观上如何发生，从而为它们的使用和应用提供信心。

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