Suitability assessment on land reclamation of subsided land by coal mining in plain area with high groundwater level

摘要

Assessment of land reclamation suitability is necessary in post-mining land use planning and decision making.Taking subsided area of NOI mining section and east-1 mining section in Pengzhuang coal mine as a study area,this paper constructed the index system of land reclamation suitability evaluation for the hidden area in the high groundwater level coal mining subsidence area,put forward boundary calculation method of subsidence water area and index model of reclamation suitability evaluation,and by means of ArcGIS spatial analysis function to carry out the reclamation suitability evaluation of every evaluation unit.The results show that: forecast to 2025,among the cumulative subsidence land,the subsidence area that is suitable for the reclamation of arable land is approximately694.4 hectares,relatively suitable for the reclamation of construction land and the retaining water area is respectively 203.2 hectares and 122.7 hectares.