山东巨野龙固煤矿地表水体范围提取设计及演变分析

Extraction Design and Evolution Analysis of Surface Water Body Range in Longgu Coal Mine in Juye County

摘要:

高潜水位煤矿区开采后极易形成的积水区，对其进行提取设计以及演变分析具有重要科学意义。本研究基于Landsat系列影像数据，利用遥感云计算平台GEE，采用水体指数法提取巨野龙固煤矿2001—2020年的水体面积变化，同时与GSW数据集提取的水面进行辅助验证以及利用Sentinel2数据监督分类提取水体进行精度验证，然后对其演变进行分析。结果表明：研究区20年来水体范围一直在呈稳定增长的趋势，2001—2014年呈缓慢增长趋势，2015—2020年呈现出迅速增长的趋势，造成矿区水体范围面积在2015年迅速扩大的原因主要为煤矿开采活动。

Abstract:

It is of great scientific significance to carry out extraction design and evolution analysis for the ponding area easily formed after mining in high groundwater level coal mine area. Based on the Landsat series image data, by using the remote sensing cloud computing platform GEE (Google Earth Engine) and water index method, the change of water area of Longgu coal mine in Juye county has been extracted from 2001 to 2020. At the same time, auxiliary verification has been carried out with the water surface extracted from the GSW data set. By using Sentinel2 data, the extraction of water body for accuracy verification has been to supervised and classified, and the evolution has been analyzed. It is showed that the scope of water body in the study area has been growing steadily for 20 years, showing a slow growth trend from 2001 to 2014, and a rapid growth trend from 2015 to 2020. The main reasons for rapid expansion of the scope of water body in the mining area in 2015 are coal mining activities and government policy factors.