本文選題：金牙金礦床 + 微細(xì)粒浸染型金礦床�。� 參考：《地質(zhì)與勘探》2016年05期

【摘要】：在金屬礦普查和勘探中,井中激發(fā)極化法能幫助判斷鉆孔中已知礦化體或礦體的空間展布,特別是盲礦體。和地面激發(fā)極化法相比,該方法供電電極或測(cè)量電極接近礦體,加大了勘探深度和范圍,且井中干擾較小,數(shù)據(jù)的信噪比高。金牙金礦床是典型的微細(xì)粒浸染型金礦床。由于該金礦床的空間展布的復(fù)雜性,在勘探過(guò)程中需要預(yù)測(cè)礦體的展布與形態(tài)。文章以金牙金礦床那元礦段ZK58811孔的井中激電為例,對(duì)激電測(cè)井與地-井方式方位測(cè)量的方法技術(shù)及資料解釋作了說(shuō)明。該礦床礦體受構(gòu)造與巖性雙重控制,礦床延伸較大,礦體形態(tài)復(fù)雜多變,地表覆蓋著較厚的第四系沉積。通過(guò)井中激發(fā)極化法測(cè)量,較準(zhǔn)確地推斷了構(gòu)造、礦體在鉆孔四周的展布,為后續(xù)鉆探設(shè)計(jì)提供依據(jù),減少了探礦風(fēng)險(xiǎn),加快了礦床勘查,證明井中激電在微細(xì)粒浸染型金礦勘查中的應(yīng)用是可行的和有效的。
[Abstract]:In the survey and exploration of metal deposits, the method of induced polarization in wells can help to determine the spatial distribution of known orebodies or orebodies in boreholes, especially blind orebodies. Compared with the ground induced polarization method, the power supply electrode or the measuring electrode is close to the orebody, which increases the exploration depth and scope, and the interference in the well is small, and the signal-to-noise ratio of the data is high. The gold-tooth gold deposit is a typical microfine disseminated gold deposit. Because of the complexity of the spatial distribution of the gold deposit, it is necessary to predict the distribution and shape of the orebody in the exploration process. In this paper, the method, technique and data interpretation of geoelectric logging and geo-well azimuth measurement in the wells of ZK58811 hole in the Nayuan section of the gold-tooth gold deposit are described. The ore body is controlled by both structure and lithology. The ore body is extended and complex and changeable, and the surface is covered with thick Quaternary deposits. By means of in-well induced polarization survey, the structure and distribution of ore bodies around the boreholes are inferred more accurately, which provides the basis for the design of subsequent drilling, reduces the risk of prospecting, and speeds up the exploration of ore deposits. It is proved that the application of in-well IP in the exploration of microfine disseminated gold deposits is feasible and effective.
【作者單位】： 中國(guó)冶金地質(zhì)總局廣西地質(zhì)勘查院;
【基金】：中國(guó)地質(zhì)調(diào)查局老礦山和外圍找礦項(xiàng)目(編號(hào):1212011220708)資助
【分類(lèi)號(hào)】：P631.324;P618.51

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本文編號(hào)：1992169