CAJ | 학술논문

通过铅锌矿地气模型模拟研究了地气流作用下，成矿元素及围岩中多种元素的迁移现象及规律。实验结果表明：铅锌矿的成矿元素Pb、Zn因迁出率大，伴生元素 Cu、Mo、Au 因迁出比大，可以在矿体上方形成易识别的地气异常，适合作为指矿元素。围岩对矿体中元素迁移存在复杂影响，但不会掩盖指矿元素形成的地气异常。在粤北隐伏花岗岩铀矿、桂北隐伏锌铜矿、湘南坪宝地区先后开展了地气测量探测隐伏金属矿研究及应用。根据室内实验及多个矿区、不同矿种上开展地气探测工作的成果，对地气法探测隐伏金属矿的有效性、地气场所包含的找矿与地质信息、地气测量的有效探测深度及地气异常与矿体的空间关联性、地表影响等问题进行了分析讨论。获取的资料表明：隐伏金属矿正上方均有成矿主元素及一批共（伴）生元素形成的地气异常；这种异常随矿体埋深增大，其幅度不是降低而是增大；地气法探测隐伏金属矿的有效深度可以达到千米尺度；地表污染不会对地气测量产生影响。
통과연자광지기모형모의연구료지기류작용하，성광원소급위암중다충원소적천이현상급규률。실험결과표명：연자광적성광원소Pb、Zn인천출솔대，반생원소 Cu、Mo、Au 인천출비대，가이재광체상방형성역식별적지기이상，괄합작위지광원소。위암대광체중원소천이존재복잡영향，단불회엄개지광원소형성적지기이상。재월북은복화강암유광、계북은복자동광、상남평보지구선후개전료지기측량탐측은복금속광연구급응용。근거실내실험급다개광구、불동광충상개전지기탐측공작적성과，대지기법탐측은복금속광적유효성、지기장소포함적조광여지질신식、지기측량적유효탐측심도급지기이상여광체적공간관련성、지표영향등문제진행료분석토론。획취적자료표명：은복금속광정상방균유성광주원소급일비공（반）생원소형성적지기이상；저충이상수광체매심증대，기폭도불시강저이시증대；지기법탐측은복금속광적유효심도가이체도천미척도；지표오염불회대지기측양산생영향。
A series of geogas models were built to study the transportation phenomenon and regularity ofore-forming elements in lead-zinc ore and several elements in surrounding rock under the action of ascending geogas flows.The experimental results indicate that the ore-forming elements of lead-zinc ore,Pb and Zn, have high transportation rate, and the associated elements, including Cu, Mo, Au, have high transportation ratio.These elements are suitable as indicator elements of lead-zinc ore,because their transportation can form recognizable geogas anomaly above concealed orebody.The surrounding rock forms a complex influence on elements transportation from orebody,but which can’t cover up the geogas anomaly formed by indicator elements. A number of studies and application of geogas survey for prospecting concealed ore body were carried out respectively in three area,including a concealed granite-type uranium deposit in northern Guangdong province,a concealed zinc copper deposit in northern Guangxi province and Huangshaping-Baoshan lead-zinc deposit area in south Hunan province. According to laboratory experimental results and prospecting achievement of geogas survey on several mining areas and different mine types,a series of problems were analyzed and discussed,such as the effectiveness and effective detecting depth of geogas survey for prospecting concealed ore,the prospecting and geological information in geogas field,the spatial correlation between geogas anomaly and concealed orebody,the influence factors from ground surface.The acquired data shows that there are identifiable geogas anomalies of maj or ore-forming elements and several associated elements in ground surface above the concealed orebody.With increasing buried depth of orebody,the anomalous amplitude of geogas doesn’t lower but increases.The effective detecting depth of geogas survey for prospecting concealed orebody can reach a great depth of a thousand meter scale.The pollution from ground surface can’t affect geogas survey.