价值工程
價值工程
개치공정
VALUE ENGINEERING
2014年
8期
8-11
,共4页
图形特征%光谱特征%解译标志%铅锌矿床
圖形特徵%光譜特徵%解譯標誌%鉛鋅礦床
도형특정%광보특정%해역표지%연자광상
graphics feature%spectral signature%interpretation key%Pb-Zn deposit
光谱特征和图形特征分别是地物的电磁辐射特征在遥感图像上微观层次和宏观层次的表现形式。滇川黔铅锌成矿区矿床的含矿围岩是碳酸盐岩，广泛分布，但只有特殊的构造位置赋矿。该类矿床的围岩蚀变较弱，环境干扰因素较多，根据光谱特征利用多波段遥感图像提取蚀变异常信息存在较多的不确定性。不同构造位置的相同岩性因遭受不同的风化程度，其形成的地貌、水系以及土壤、植被覆盖等都会有差异，在遥感图像上显示为不同的图形特征，据此可推断岩性以及其结构、构造等特征。图形特征受环境干扰较小，具有较好的稳定性，在滇川黔铅锌成矿区含矿碳酸盐岩的研究中具有实用价值。
光譜特徵和圖形特徵分彆是地物的電磁輻射特徵在遙感圖像上微觀層次和宏觀層次的錶現形式。滇川黔鉛鋅成礦區礦床的含礦圍巖是碳痠鹽巖，廣汎分佈，但隻有特殊的構造位置賦礦。該類礦床的圍巖蝕變較弱，環境榦擾因素較多，根據光譜特徵利用多波段遙感圖像提取蝕變異常信息存在較多的不確定性。不同構造位置的相同巖性因遭受不同的風化程度，其形成的地貌、水繫以及土壤、植被覆蓋等都會有差異，在遙感圖像上顯示為不同的圖形特徵，據此可推斷巖性以及其結構、構造等特徵。圖形特徵受環境榦擾較小，具有較好的穩定性，在滇川黔鉛鋅成礦區含礦碳痠鹽巖的研究中具有實用價值。
광보특정화도형특정분별시지물적전자복사특정재요감도상상미관층차화굉관층차적표현형식。전천검연자성광구광상적함광위암시탄산염암，엄범분포，단지유특수적구조위치부광。해류광상적위암식변교약，배경간우인소교다，근거광보특정이용다파단요감도상제취식변이상신식존재교다적불학정성。불동구조위치적상동암성인조수불동적풍화정도，기형성적지모、수계이급토양、식피복개등도회유차이，재요감도상상현시위불동적도형특정，거차가추단암성이급기결구、구조등특정。도형특정수배경간우교소，구유교호적은정성，재전천검연자성광구함광탄산염암적연구중구유실용개치。
The electromagnetic radiation characteristic of ground objects in remote sensing image has two forms,the spectral signature on the micro level and Graphics features on the macro level. The host rock is carbonate rock which is widespread in the Yunnan-Sichuan-Guizhou metallogenic region of Zinc and Lead, however, the deposit located only at the special tectonic. There are many uncertainties of extracting abnormal information of mineralized alteration using multiband remote sensing imagines for the Rock alteration of this kind of deposits is weak, and disturbed by many environment factors also. Rocks in same lithology show different graphic feature on remote sensing image at different tectonic positions, where different weathering degree formed different landform, drainage pattern, soil, vegetation cover, and so on. Conversely, the lithology and structure of the rock and tectonic position would be determined from graphic feature which were seldem Interfered by the environment, and has practical value in the research of ore-hosting carbonate rocks in the Yunnan-Sichuan-Guizhou Pb-Zn metallogenic region.
