红旗煤矿开采沉陷土地生态服务价值影响

Effects of Mining Subsidence on the Land Ecosystem Services in Red Flag coal mine

为研究因煤矿地下开采造成的地面沉陷程度及其土地生态服务功能价值影响,首先利用FLAC模型对地面沉陷进行定量预测,根据地面沉陷预测结果基于GIS技术对因地面沉陷造成的土地生态服务价值进行定量分析、估算。研究结果表明:全井田最大下沉值为3590mm,最大倾斜值为71.8mm,最大曲率值为2.18×10-3/m,最大水平变形值为27.3mm/m,最大水平移动为898mm,地表沉陷面积为8.09km2;将导致土地生态服务价值损失537.11万元。

To study the area of coal mining subsidence and the land ecological service value because of mining subsidence.Firstly,forecast mining subsidence quantitatively by FLAC model,then,analyzed and estimated land ecological service value quantitatively caused by the mining subsidence according to the mining subsidence prediction results based on GIS technology.The results showed that the maximum value for subsidence of the whole field is 3590 mm,the maximum inclined value is for 71.8 mm,the maximum value for curvature is 2.18×10-3 /m,the maximum horizontal deformation value for 27.3 mm/m,maximum level moving 898 mm for the whole field,surface subsidence area for 8.09 km 2,would lead to loss of land ecosystem service value 5371100 Yuan.