Exploration of Innovative Ecological Restoration Techniques for High-Steep Slopes in Jinduicheng Molybdenum Mine,Shaanxi Province

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."