本文選題：地面伽瑪能譜測(cè)量 + 因子分析��； 參考：《東華理工大學(xué)》2017年碩士論文

【摘要】：贛杭成礦帶是我國主要十大鈾成礦帶之一,其產(chǎn)鈾礦區(qū)域跨度長,范圍廣。該鈾成礦帶自西向東形成8個(gè)鈾礦化集中區(qū)和53個(gè)鈾礦床,鵝公山火山盆地是8個(gè)鈾礦化集中區(qū)之一,也是重點(diǎn)調(diào)查評(píng)價(jià)的火山盆地。項(xiàng)目組選擇工作程度較低,礦(化)點(diǎn)密集產(chǎn)出的鵝公山火山盆地中東部地段,進(jìn)行1:5萬地面伽瑪能譜測(cè)量(376km2)。本文以鵝公山火山盆地為研究對(duì)象,結(jié)合鈾成礦地質(zhì)背景,分析了盆地內(nèi)三個(gè)鈾礦床和眾多鈾礦(化)點(diǎn)所處的鈾成礦地質(zhì)環(huán)境,導(dǎo)礦、控礦構(gòu)造特征。通過對(duì)研究區(qū)內(nèi)地面伽瑪能譜測(cè)量資料整理,分析了區(qū)域內(nèi)鈾、釷、鉀含量背景、場(chǎng)暈分布特征、控制因素和與鈾礦化的關(guān)系。進(jìn)而應(yīng)用因子分析法,以2km2為一單元,將研究區(qū)劃分成188個(gè)單元,求取各單元內(nèi)鈾、釷、鉀及其特征參數(shù)的平均值、均方差等,建立相關(guān)矩陣,進(jìn)行數(shù)據(jù)分析。計(jì)算出各單元的鈾源因子和礦化因子得分情況,圈定出區(qū)域內(nèi)鈾源因子和礦化因子得分等值圖,提取與鈾礦化相關(guān)的多元信息。通過對(duì)已知礦床所處單元對(duì)比分析,推斷潛在有利的鈾成礦單元,進(jìn)而選定了黃巢寨和王家兩處為鈾成礦有利地段。對(duì)上述兩處具有鈾成礦潛力地段,重點(diǎn)開展了更精細(xì)、大比例尺(1:1萬)地面伽瑪能譜測(cè)量,深入調(diào)查、研究了黃巢寨和王家地段的放射性元素場(chǎng)暈分布形態(tài)、控制因素及與鈾礦(化)點(diǎn)空間關(guān)系,厘定了找礦靶區(qū)四處,并對(duì)其鈾成礦潛力進(jìn)行了分析、研究。
[Abstract]:Ganhang metallogenic belt is one of the ten main uranium metallogenic belts in China. Eight uranium mineralization concentration areas and 53 uranium deposits were formed in the uranium metallogenic belt from west to east. The Gegongshan volcanic basin is one of the eight uranium mineralization concentration areas and is also the volcanic basin which is the focus of investigation and evaluation. The project group selected the central and eastern part of the Gegongshan volcanic basin, where the working degree is relatively low and the mining (chemical) points are concentrated, and measured the gamma energy spectrum of 1: 50 000 ground level by 376km2. Taking the Gegongshan volcanic basin as the research object and combining with the uranium metallogenic geological background, this paper analyzes the characteristics of uranium metallogenic geological environment, ore-conducting and ore-controlling structure of three uranium deposits and many uranium ore (chemical) points in the basin. The background of uranium, thorium and potassium contents, the characteristics of field halo distribution, the controlling factors and the relationship between uranium mineralization and uranium mineralization in the study area are analyzed by means of the data collected from the surface gamma spectrum measurements. Then, using factor analysis method and 2km2 as a unit, the study area is divided into 188 units, the average values of uranium, thorium, potassium and their characteristic parameters, the mean square deviation and so on are obtained in each unit, and the correlation matrix is established and the data are analyzed. The scores of uranium source factor and mineralization factor of each unit are calculated, and the equivalent map of uranium source factor and mineralization factor score in the area is drawn, and the multivariate information related to uranium mineralization is extracted. By comparing and analyzing the units in which the known deposits are located, we infer the potentially favorable uranium ore-forming units, and then select Huangchaozhai and Wangjia as favorable uranium metallogenic sites. For the two uranium-forming potential areas mentioned above, we have carried out more precise, large scale (1: 10 000) ground gamma energy spectrum measurements, investigated them in depth, and studied the halo distribution of radioactive elements in Huangchaozhai and Wangjia areas. Based on the control factors and the spatial relationship between uranium deposits and uranium ore points, the location of prospecting targets is determined, and the uranium metallogenic potential is analyzed and studied.
【學(xué)位授予單位】：東華理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：P619.14

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