本文選題：烏達(dá)煤火 + 自適應(yīng)梯度閾值(SAGBT)法��； 參考：《國(guó)土資源遙感》2017年03期

【摘要】：為了評(píng)估內(nèi)蒙古烏達(dá)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熱紅外波段影像,利用單窗算法反演4個(gè)年度的烏達(dá)煤田地表溫度;采用自適應(yīng)梯度閾值(selfadaptive gradient-based thresholding,SAGBT)法圈定該煤田煤火區(qū),分析煤火空間分布格局演變動(dòng)態(tài),并對(duì)探測(cè)結(jié)果進(jìn)行了實(shí)地驗(yàn)證。結(jié)果表明,所識(shí)別煤火區(qū)的準(zhǔn)確率為75%;煤火區(qū)面積由2008年的1.194 km~2演變到2015年的0.873 km~2,呈顯著下降趨勢(shì)�？偟膩碚f,煤火治理取得了初步成效,實(shí)現(xiàn)了煤火區(qū)面積26.88%的減量;但仍有73.12%的存量,說明今后仍須加大煤火治理力度。
[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.
【作者單位】： 中國(guó)礦業(yè)大學(xué)(北京)煤炭資源與安全開采國(guó)家重點(diǎn)實(shí)驗(yàn)室;防災(zāi)科技學(xué)院;北京工業(yè)職業(yè)技術(shù)學(xué)院;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目“煤火汞釋放初探”(編號(hào):41371449)資助
【分類號(hào)】：TD752.2;TP79
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本文編號(hào)：1742151