CAJ | 학술논문

笔者以湖南大根垄钨多金属矿为试验研究区，以20 m 点距在已知矿体上方取土壤样，并按照24 h 提取时间、1000 mL HNO3提取液、50 cm 电极间距等工作条件进行了地电提取试验。结果表明，地电提取前后土壤中的元素含量变化不大，被提取到的金属元素应属土壤金属总量的一部分。次生晕与地电提取的异常形态对比发现：Co 、Ni 较清晰，W 次之，Cr 无异常；元素的异常特征主要取决于土壤中该元素的活性形式所占比例。综合分析认为地电提取异常与矿体的相对位置有关：矿体的下坡位置以及控矿断裂附近容易形成异常，距离原生矿体太近则会对异常有明显干扰。在本矿区，矿体风化程度越高对 Co 、Ni 的地电提取异常越有利；其异常宽度一般比次生晕窄。
필자이호남대근롱오다금속광위시험연구구，이20 m 점거재이지광체상방취토양양，병안조24 h 제취시간、1000 mL HNO3제취액、50 cm 전겁간거등공작조건진행료지전제취시험。결과표명，지전제취전후토양중적원소함량변화불대，피제취도적금속원소응속토양금속총량적일부분。차생훈여지전제취적이상형태대비발현：Co 、Ni 교청석，W 차지，Cr 무이상；원소적이상특정주요취결우토양중해원소적활성형식소점비례。종합분석인위지전제취이상여광체적상대위치유관：광체적하파위치이급공광단렬부근용역형성이상，거리원생광체태근칙회대이상유명현간우。재본광구，광체풍화정도월고대 Co 、Ni 적지전제취이상월유리；기이상관도일반비차생훈착。
In order to discover the mechanism and anomaly origin of geoelectrochemical extraction , an experimental study has already been conducted in Dagenlong Tungsten deposit in Hunan .We take soil samples by interval of 20 m ,and implement the geoelectrochemical extraction under the working conditions of the following three :the extracting time is 24 hours ,the dose of HNO3 is 1 000 mL ,and the distance between two electrodes is 50 cm . The result shows that the variation of metal element content is insignificant in soil after extracting ,and the extracted metal elements are proportional to the whole metal in the soil . The morphology comparison of anomaly between the geoelectrochemical extraction and the secondary halo shows that Ni and Co is clear ,W is less ,and Cr has no anomaly .The characteristics of anomaly mainly depend on the content proportion of element which is active in soil . Comprehensive analysis shows that the anomalies of geoelectrochemical extraction related to the relative position of the ore body .It is easy to form anomaly at downhill position ,and distance too close to native ore body have obvious interference to anomaly .In this ore deposit area ,the higher weathering degree , the better Co ,Ni anomaly of geoelectrochemical extraction .The anomaly width of geoelectrochemical extraction is smaller than secondary halo .