徐州贾汪矿塌陷积水区变化特征的研究

本文采用遥感(RS)获取信息和地理信息系统(GIS)建库分析相结合的方法,对徐州贾汪矿区1987-2007年煤炭开采过程中形成的塌陷积水区的数量变化、形态特征变化以及破碎度变化特征及其成因进行了研究,结果表明1987-2007年间,由于开采活动的不断进行,常年积水塌陷区的面积逐步增加;1987-1997年10年间,季节性塌陷积水区与常年塌陷积水区具有相似的变化特征;1997-2007年10年间,由于部分矿井停止开采及土地复垦的推行,季节性塌陷积水区的数量锐减,斑块形状变得规则且分布趋于分散。

Change features of mining watershed subsidence of Jiawang coal mining area in Xuzhou

Methods of remote sensing(RS) and geographic information system(GIS) were used to research the change of quantity and morphological characters of watershed in mining subsidence,which were formed the process of coal mining in Xuzhou Jiawang mining area between 1987 and 2007,and the fragmentation degree change character and its causes were also studied in this paper.RS was used to get information,while GIS was used to build database for analysis,and the study results showed that,between 1987 and 2007,because of the continuous mining activities,perennial watershed area increased gradually,related shape index generally became more complex,and the degree of fragmentation decreased year by year;seasonal watershed area had the same change character during the first decade(1987-1997);the quantity of seasonal watershed area dropped drastically,the shape of patches became to regularization and the distribution tended to fragmented due to part of the mines stop mining and land reclamation activities during the last decade(1997-2007).