陕西金堆城钼矿高陡边坡生态修复创新技术探索
Exploration of Innovative Ecological Restoration Techniques for High-Steep Slopes in Jinduicheng Molybdenum Mine,Shaanxi Province
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摘要: 露天矿山开发过程中,往往会形成大面积高陡裸露岩坡创面。此类边坡不仅坡度极大、土壤层缺失,且土壤养分极度匮乏,生态基础极为薄弱,一直是矿山边坡生态修复领域的难点问题。本文以陕西金堆城露天钼矿坑高陡边坡为研究对象,创新性提出将分层加固技术与植被群落构建技术协同思路,通过实地工程应用系统探究其作用机制:分层加固技术借助基础层稳固边坡结构、植生层改良土壤条件,为植被生长提供基础支撑;植被群落构建技术通过先锋植物筛选、后续物种引入及微生物协同,实现生态系统的逐步重建。研究表明,两种技术的综合应用可显著提升高陡边坡稳定性,并能快速提高植被覆盖率,构建起兼具生态稳定性与经济潜力的复合群落。本研究不仅为金堆城矿区的生态修复提供了可操作的技术方案,更可为西北干旱半干旱地区同类高陡边坡的生态修复工程提供技术范式,对推动矿山生态修复从"工程稳定"向"生态可持续"转型具有重要指导意义。Abstract: The exploitation of open-pit mines often results in the formation of large-scale, high and steep exposed rock slopes. Characterized by extreme steep gradients, an absence of soil layers, and severe nutrient deficiencies, such slopes exhibit an very fragile ecological foundation, posing a persistent challenge in mine slope ecological restoration. This study focuses on the high and steep slopes of the Jinduicheng open-pit molybdenum mine in Shaanxi Province, and proposes an innovative synergistic approach integrating stratified reinforcement technology and vegetation community construction technology. Through field engineering applications, the mechanisms of these techniques are systematically investigated: Stratified reinforcement technology stabilizes slope structures through a foundational layer while improving soil conditions via a vegetation-growing layer, thereby providing essential support for plant growth. Vegetation community construction technology facilitates progressive ecosystem restoration through the selection of pioneer plants, the introduction of secondary species, and microbial synergy. The results demonstrate that the combined application of these two technologies significantly enhances slope stability, rapidly improves vegetation coverage, and establishes a composite plant community with both ecological stability and economic potential. This study not only provides a practical technical solution for ecological restoration in the Jinduicheng mining area but also serves as a technical paradigm for rehabilitating similar high and steep slopes in arid and semi-arid regions of Northwestern China. Moreover, it offers critical insights for advancing mine ecological restoration from "engineering stability" to "ecological sustainability."
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