本文選題：玉龍銅礦 + 地質(zhì)特征��； 參考：《成都理工大學(xué)》2015年碩士論文

【摘要】：西藏玉龍銅(鉬)礦床位于特提斯構(gòu)造域東段的三江構(gòu)造帶內(nèi),構(gòu)造格局十分復(fù)雜,所屬的玉龍斑巖銅(鉬)礦帶不僅是我國重要的銅礦成礦遠(yuǎn)景區(qū)帶,藏東昌都地區(qū)也是我國重要的有色金屬工業(yè)基地。西藏玉龍銅礦床是西藏境內(nèi)發(fā)現(xiàn)最早,也是第一個勘查成型的斑巖型銅礦床,長期以來備受關(guān)注。礦體地質(zhì)特征作為礦床地質(zhì)特征的核心部分,是成礦作用、控礦構(gòu)造、成礦結(jié)構(gòu)面、礦床類型、找礦方向等判定的最基本的約束,然而長期以來礦體地質(zhì)特征研究常常被人忽視,導(dǎo)致對成礦作用、控礦構(gòu)造、成礦結(jié)構(gòu)面等問題眾說紛紜,莫衷一是,嚴(yán)重妨礙了了研究工作的深入和更大的找礦成就的突破和取得。前人曾對玉龍銅礦床做過較為系統(tǒng)的研究,但相關(guān)研究是基于極為有限的勘查工程進(jìn)行的,后期商業(yè)性勘查項目的介入投入了大量勘查工程,但基本上都未做深入研究,僅根據(jù)品位進(jìn)行了礦體圈定,因此,有關(guān)礦體地質(zhì)特征的認(rèn)識依然存在局限,作者以玉龍銅礦床Ⅰ礦體為研究對象,針對最基礎(chǔ)的Ⅰ礦體地質(zhì)特征選題具有較大的理論意義和現(xiàn)實意義。筆者在前人研究的基礎(chǔ)上,全面收集了玉龍礦床各種地質(zhì)勘查成果資料,結(jié)合自己在礦區(qū)多年的實際工作經(jīng)驗和認(rèn)識,重新對部分鉆孔的巖心樣品就行重新的編錄,并且對Ⅰ號礦體進(jìn)行了詳實的野外調(diào)查。利用公司新引入的DIMINE三維數(shù)字化礦山軟件,構(gòu)建了Ⅰ號礦體三維實體模型,對其進(jìn)行了全方位、多視角、多層次的剖析并且用軟件重新進(jìn)行了儲量估算。通過實地調(diào)查和論文寫作,深化了對Ⅰ號礦體的成礦背景和基本地質(zhì)特征的認(rèn)識,Ⅰ號礦體銅資源量占全礦區(qū)總銅資源量的80%以上,以斑巖型和角巖型浸染狀硫化銅礦石為主,是小巖體成大礦的典型代表礦床。利用DIMINE軟件對礦體全面剖析了不同切面、斷面的形態(tài)特征、品位變化特點。比較直觀形象的展示了礦體品位和礦化具有淺部富集、深部貧化特點�？臻g上不同品位斑塊呈斑雜狀鑲嵌顯示出成礦過程的多期性特征和巖體成巖成礦的特點。運(yùn)用DIMINE軟件對礦體進(jìn)行距離冪反比法估值,并與地勘單位廣泛使用的塊段法進(jìn)行對比發(fā)現(xiàn),無論是礦體的礦石量、金屬量還是品位變化系數(shù)均小于10%,處于比較合理的浮動區(qū)間,因此DIMINE軟件在實體建模與估算儲量方面有著很好的使用效果,能夠直觀的顯示礦體實際形態(tài),高效精確的估算整個礦體和局部塊段的儲量,可靠性比較強(qiáng),在玉龍礦區(qū)今后的地勘工作和資源開發(fā)方面將有著廣泛的應(yīng)用。
[Abstract]:The Yulong copper (molybdenum) deposit in Tibet is located in the Sanjiang structural belt in the eastern section of the Tethys tectonic domain, and the tectonic framework is very complex. The Yulong porphyry copper (molybdenum) ore belt is not only an important copper ore metallogenic area in China. Changdu area in eastern Tibet is also an important non-ferrous metal industry base in China. Yulong copper deposit in Tibet is the earliest discovered and the first porphyry copper deposit in Tibet. As the core part of the geological characteristics of ore deposits, orebody geological features are the most basic constraints for the determination of ore-forming processes, ore-controlling structures, ore-forming structural planes, deposit types, ore-prospecting directions, etc. However, for a long time, the study of geological characteristics of orebodies is often ignored, which leads to different opinions on ore-forming processes, ore-controlling structures, ore-forming structural planes, etc. It seriously hinders the further research and the breakthrough and achievement of ore prospecting. Previous studies on the Yulong copper deposit have been systematic, but the related research is based on a very limited exploration project. In the late stage, a large number of exploration projects were invested in commercial exploration projects, but basically no in-depth study was done. Only according to the grade, the ore body is delineated. Therefore, there are still some limitations in the understanding of the geological characteristics of the orebody. The author takes the Yulong copper deposit I orebody as the research object. It is of great theoretical and practical significance to select the most basic geological features of orebody I. On the basis of previous studies, the author has collected all kinds of geological exploration data of Yulong deposit, combined with his practical working experience and understanding in the mine area for many years, and recataloged some core samples from boreholes. A detailed field investigation was carried out on the No. 1 orebody. The 3D solid model of No. 1 ore body is constructed by using the newly introduced DIMINE 3D digitized mining software of the company. The 3D solid model of No. 1 ore body is analyzed in all directions, from multiple perspectives and at different levels, and the reserves are estimated again with the software. Through field investigation and paper writing, the metallogenic background and basic geological characteristics of No. 1 ore body are deepened. The copper resources of No. 1 ore body account for more than 80% of the total copper resources in the mining area, and the main copper ore is porphyry type and hornstone type disseminated copper sulfide ore. It is a typical ore deposit of small rock mass. In this paper, DIMINE software is used to analyze the shape and grade change of different sections and sections of ore bodies. The ore body grade and mineralization have the characteristics of shallow enrichment and deep dilution. The plaques of different grade in space show the multi-stage characteristics of metallogenic process and the characteristics of diagenesis and metallogenesis of rock masses. By using DIMINE software, the distance power inverse ratio method is used to estimate the ore body, and compared with the block section method widely used in geological prospecting units, it is found that both the ore quantity, metal quantity and grade change coefficient of ore body are less than 10, and they are in a reasonable floating range. Therefore, DIMINE software has a good effect in solid modeling and reserves estimation, it can show the actual shape of orebody intuitively, estimate the reserves of the whole orebody and local block section efficiently and accurately, and the reliability is relatively strong. It will be widely used in geological prospecting and resource development in Yulong mining area.
【學(xué)位授予單位】：成都理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P618.41

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