顾及地貌特征的矿区地表塌陷DEM的生成方法

地下煤炭资源开采导致矿区地表塌陷和矿区地形的变化,直接由开采沉陷下沉预计数据生成的DEM不能表现矿区地表塌陷后的地形状况。通过在开采沉陷下沉预计程序中增加高程修正计算功能,对矿区原始地貌高程进行下沉修正计算,生成矿区地表塌陷高程数据文件,由该数据文件可以生成顾及地貌特征的矿区地表塌陷DEM。该方法操作和实现简单,生成的DEM精度可靠,能够表现矿区地表塌陷后的地形状况,可以作为矿区地理信息系统的基础数据,对于指导开采沉陷的防治和治理具有重要意义。

An implementation of mining subsidence DEM considering landform feature

Underground coal resources mining have cause the mining subsidence. The DEM directly produced by subsidence prediction data is not able to display the mining terrain change. The function of elevation modification is appended to subsidence forecasting procedure. Using the procedure to modify the elevation of mine subsidence can produce the mining subsidence elevation data file, and the data file can produce the DEM considering landform feature. This approach is very easy to be implemented. The DEM precision with this approach is reliable. The DEM, that it may represent the situation of mining subsidence, can be used as fundamental data in MGIS, and it also has the great significance to guide the prevention and control of mining subsidence.