摘要
Abstract
To address the difficulties in quantitatively characterizing drastic landform changes and ecological impacts induced by small-scale open-pit mining,this study proposes a three-dimensional modeling and analysis method integrating geodetic surveying and remote sensing technologies.By combining high-precision GNSS data,total station ground-survey measurements,and aerial photogrammetric(APhG)point clouds,and by introducing a terrain breakline constraint mechanism,a refined Triangulated Irregular Network(TIN)model was constructed.The limestone mine in the Qianshan Mountains,Anshan,Liaoning Province,was selected as the test area,and two monitoring datasets acquired at different periods were comparatively analyzed.The results show that the proposed method can accurately reconstruct the complex terrain of the mining area.The calculated excavation volume based on the model,with a relative error of only 1.7%compared with the back-calculated value derived from production records,thereby demonstrating the engineering applicability of the model.Meanwhile,spatial analysis revealed that the minimum distance between the mining area and the adjacent bird reserve decreased to 70m,indicating a significant risk of ecological disturbance.关键词
小型露天矿/多源数据融合/TIN建模/土方量计算/生态监测Key words
small open-pit mine/multi-source data fusion/TIN modeling/earthwork calculation/ecological monitoring分类
矿业与冶金
