内蒙古乌达煤田煤火治理效果的遥感监测与评估

发布时间：2018-04-13 00:32

  本文选题：乌达煤火 + 自适应梯度阈值(SAGBT)法　； 参考：《国土资源遥感》2017年03期

【摘要】：为了评估内蒙古乌达煤田煤火治理的效果,采用2008年治理前、2011和2013年治理中以及2015年治理后期的Landsat 5/8热红外波段影像,利用单窗算法反演4个年度的乌达煤田地表温度;采用自适应梯度阈值(selfadaptive gradient-based thresholding,SAGBT)法圈定该煤田煤火区,分析煤火空间分布格局演变动态,并对探测结果进行了实地验证。结果表明,所识别煤火区的准确率为75%;煤火区面积由2008年的1.194 km~2演变到2015年的0.873 km~2,呈显著下降趋势。总的来说,煤火治理取得了初步成效,实现了煤火区面积26.88%的减量;但仍有73.12%的存量,说明今后仍须加大煤火治理力度。
[Abstract]:In order to evaluate the effect of coal fire control in Wuda coalfield in Inner Mongolia, the Landsat 5 / 8 thermal infrared wave band images were used to retrieve the surface temperature of Wuda coalfield in four years by single window algorithm.The self-adaptive gradient-based thresholding method is used to delineate the coal fire area in the coal field. The evolution of the spatial distribution pattern of the coal fire is analyzed, and the results of the detection are verified in the field.The results show that the accuracy rate of identifying coal fire area is 75, and the area of coal fire area changed from 1.194 km~2 in 2008 to 0.873 km2 in 2015, showing a significant downward trend.On the whole, the coal fire control has made initial achievements, and the reduction of coal fire area has been achieved by 26.88%, but there are still 73.12% of the stock, which indicates that the coal fire control should be strengthened in the future.
【作者单位】： 中国矿业大学(北京)煤炭资源与安全开采国家重点实验室;防灾科技学院;北京工业职业技术学院;
【基金】：国家自然科学基金项目“煤火汞释放初探”(编号:41371449)资助
【分类号】：TD752.2;TP79
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本文编号：1742151