喀斯特废弃矿区近自然地形重塑模拟

doi:10.11799/ce202207025

Abstract

Abstract: Topographic reconstruction is the foundation and the key of land reclamation and ecological reconstruction in the ecological restoration of abandoned mines. The stability and coordination of the topographic reconstruction has an important effect on soil reconstruction and vegetation reconstruction. The abandoned Coal Mine of JinFeng in Jinsha County which is the experimental pilot of land reclamation and ecological reconstruction, the coal resource is exploitation and utilization, is taken as a study case. In this study, the particularity and fragility of karst landforms has been taken into consideration, we take an adjacent watershed with balanced erosion as a reference. Using 3S(GIS、GPS、RS) technology and GeoFluv model, the first step is topographic reconstruction which is similar to the reference watershed with the long-term stability erosion and is integrated with the surrounding landscape visually and ecologically. The second step is to evaluate the feature of the topographic reconstruction and to analyze the balance between excavation and filling. The results showed that the reconstructed topography is similar to the reference watershed in terms of shape characteristics and channel geometry. There are differences in terms of basin structure characteristics. The main differences are the maximum height difference and the average slope reduction. It's good for restoring the stability of the topographic reconstruction. On the other hand, the volume of the cuts is just 33806.32m3 more than the volume of the fills, it is beneficial to the stability of the foundation after topographic reconstruction and to reduce the cost.

CLC Number:

TD88

References

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Simulation of topographic reconstruction of abandoned mine of karst area based on near natural terrain—A case study of Jinfeng coal mine region

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