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本文介绍使用2.0—2.5微米多通道辐射计,对新疆金矿区、油田及多金属矿区的岩矿所进行的地物光谱采集、整理和分析工作。在岩矿的地物光谱中—OH、CO_3~(-2)的作用相当明显,因此应用该方法对于寻找蚀变带十分有效。不同地区同类岩矿的地物光谱特征相同,受表面色调的干扰比可见—近红外波段要少,故有利于开展光谱工作和区分岩性。通过实验室工作论证,该方法对于Fe~(+3)和微量烃类渗漏也有相当强的探测潜力。文中最后以某矿区岩(矿)为例,介绍岩(矿)分类工作,通过空间变换,减少参量间的相关性和特征参量的维数,分类正确率可达95.3％。
This article describes the use of 2.0-2.5 micron multi-channel radiometer, Xinjiang gold mine, oilfield and polymetallic ore rock mine carried out by the spectral data collection, sorting and analysis. The role of -OH and CO_3 ~ (-2) in the terrestrial rock mass spectra is quite obvious, so the application of this method is very effective in searching for alteration zones. Rocks in different areas have the same spectral characteristics of the same type of land surface, and are less susceptible to spectral work and lithology discrimination because the interference of surface tones is less visible than in the near-infrared band. Through the laboratory work demonstrated that this method has quite strong probing potential for Fe ~ (+3) and trace hydrocarbon leakage. In the end, taking the rock (mine) in a mining area as an example, the classification of rock and mine is introduced. Through the spatial transformation, the correlation between the parameters and the dimension of the characteristic parameters are reduced, the classification accuracy is up to 95.3%.