黄土沟壑区开采沉陷对地形因子的影响研究

The influence of mining subsidence on terrain factors in gully region of loess

以黄土沟壑区的采煤沉陷区为研究对象,以地面数字高程模型和开采沉陷预计结果为基础数据,基于Arc GIS平台对煤矿开采沉陷区的地形数据进行分析处理,研究开采沉陷前、后地形因子的变化特征,并对不同地形因子之间的相关性进行了分析。研究结果表明:黄土沟壑区地面高程、坡度、坡向、起伏度等各种地形因子均受开采沉陷影响而发生改变,开采沉陷和地形因子之间存在明确的量化关系,而平均高程、起伏度、曲率、沟壑密度等因子与地面坡度之间存在显著的相关性。研究结果有助于揭示煤矿开采沉陷区的地形地貌演变规律,为保护西部矿区的生态环境提供技术支持。

The research took the mining subsidence area in gully region of loess as the object,the ground digital elevation model and the results of mining subsidence prediction as the foundation data,by using the Arc GIS platform to process the terrain data of coal mining subsidence area,study the changes of the terrain before and after the mining subsidence,and analyze the correlations among the terrain factors. The results were as follows： the ground elevation,slope gradient,aspect distribution,and waviness distribution were affected and changed by mining subsidence in the gully region of loess. There was a definite relationship between mining subsidence and terrain factors. And there were the significant correlations of the slops with elevation,slope gradient,aspect and waviness. The research results are helpful to reveal the evolution laws of the topography and geomorphology of the coal mining subsidence area,and provide technical support for the protection of the ecological environment in the western mining area.