School of Environmental Science and Spatial Informatics,China University of Mining and Technology

为研究采煤沉陷区的动态发展对地表汇流范围的影响,以洸府河、泗河及白马河流域为研究区,在开采沉陷影响的矿区地形图更新方法基础上,利用Arc Hydro Tool软件的集水多边形提取方法,提出了统计沉陷区洼地汇水范围的技术路线,并就开采沉陷对流域汇水的影响进行了分析。研究结果表明:在采煤沉陷初期,沉陷对地表汇水的影响是急剧增加的,但当沉陷稳定后对地表汇水的影响逐渐减缓并趋于稳定;沉陷所处位置是影响地表汇水的主要因素,而不是沉陷强度与沉陷范围;采煤沉陷会破坏流域的自然分水岭,使地表汇水变得混乱,原有流域分界将逐渐消失,引起一系列的生态和环境问题;加强采煤沉陷区洼地汇水范围的统计,可为采煤沉陷区的生态环境治理提供决策。

In order to study the impact of dynamic development of mining subsidence area on the surface confluence ,this paper,with the Guang Fu River,Si River,and Bai Ma River Basin as the study areas and based on the upgraded method of the topographic map in mining area influenced by the subsidence,proposed the statistical tec hnical route of lowland catchment range in subsidence area,used the confluence polygon extraction method of Arc Hydro Tool Software, and analyzed the impact of mining subsidence on watershed catchment. The research results showed that the mining subsidence's influence on the surface confluence dramatically increased at the initial sta ge,but slowed down gradually and tended to be stable when surface subsidence was less violent. The location of subsidence was the main factor that affected the surface confluence instead of subsidence intensity and subsidence scope. The natural basin watershed was destroyed by mining subsidence,and the surface confluence would bec ome in disorder. The original watershed demarcation gradually disappeared,leading to a series of ecological and environmental problems. Strengthening the statistics of lo wland confluence scope in mining subsidence area,could provide the decision-making for the governance of ecological environment in mining subsidence area.

“十二五”国家科技支撑计划资助项目(2012BAC04B03)；江苏高校优势学科建设工程基金资助项目(SZBF2011-6-B35)；