本文關鍵詞： 高精度磁測 鉛鋅礦 θ圖 磁異常處理換算　出處：《成都理工大學》2015年碩士論文　論文類型：學位論文

【摘要】：磁法勘探是地球物理勘探中最古老的方法之一,一直沿用至今,在尋找鐵磁性礦產和研究深部地質構造有著豐富的經驗,但在尋找非磁性礦產中應用較少,缺乏一定的實際經驗。本文利用高精度磁測間接地尋找鉛鋅礦,探尋磁法間接找礦的規(guī)律。天寶山鉛鋅礦處于上揚子地臺西南緣康滇地軸以東的川滇黔鉛鋅礦成礦帶上,是我國重要的鉛鋅礦基地之一。礦區(qū)經過了幾十年的開采,鉛鋅礦可開采的剩余儲量已經不多,為此,收集前人的研究成果和資料,分析該區(qū)域的地質構造、礦床基本特征以及礦區(qū)構造特征、構造演化與成礦、構造控礦等幾方面特征,得出天寶山鉛鋅礦床屬熱液礦床,采集礦區(qū)和測區(qū)的巖(礦)石標本,測定其磁性參數,得出了磁法間接找礦的可行性,在此基礎上,利用高精度磁測方法在已開采礦區(qū)外圍展開尋找新的鉛鋅礦工作。本文首先針對天寶山地區(qū)的實測磁測資料,選用位場的數據處理方法,對磁測數據進行圓滑、化極、延拓、解析信號、導數換算等方法進行磁異常處理換算,以便更好地突出目標體的信息,壓制干擾信息以及圈定可能與鉛鋅礦相關的異常體。用邊界識別-?圖法來圈定磁異常的邊界。再利用統(tǒng)計假設檢驗分區(qū)法來推斷研究區(qū)域的斷裂、蝕變帶等。最后,結合實際地質勘察和化探異常劃分的優(yōu)選靶區(qū)對天寶山鉛鋅礦外圍地區(qū)進行了礦產預測,推斷出了T1、T2、T3和T4四個可能的成礦賦礦區(qū)。
[Abstract]:Magnetic exploration is one of the oldest methods in geophysical exploration, still in use, in search of ferromagnetic minerals and Research on deep geological structure has a wealth of experience, but in the search for non magnetic mineral is used less, the lack of practical experiences. This paper uses the high precision magnetic indirectly for lead-zinc mine, indirect rule to explore the magnetic prospecting method. The Tianbaoshan Pb Zn deposit in Sichuan Yunnan Guizhou on the southwestern margin of the Yangtze Platform in Kangdian area east of lead-zinc metallogenic belt, is one of the important bases of the lead-zinc mine in China. Mine after decades of mining, the remaining recoverable reserves of the lead-zinc mine has not, therefore, from the former the research results and data analysis, the geological structure of the region, the basic characteristics of the deposit and tectonic characteristics, tectonic evolution and mineralization, ore controlling structure and other aspects of characteristics, the Tianbaoshan Pb Zn deposit belongs to hydrothermal deposit mining In the mining area and test area of rock (ore) stone specimens to determine the magnetic parameters, the feasibility of indirect prospecting magnetic method, on the basis of this, using the method of high precision magnetic survey in mining area periphery search new lead-zinc mine. This paper aimed at the Tianbaoshan area measured by magnetic data. A data processing method, is smooth, on the magnetic data of the pole, continuation, analytic signal, derivative conversion methods such as magnetic anomaly processing and conversion, in order to better highlight the target information, jamming and delineation of information may be associated with lead-zinc anomaly. With the boundary recognition method to delineate the map? The magnetic anomaly boundary. Then to infer the fracture study area by using statistical hypothesis test partition method, alteration zone and so on. Finally, target selection and combined with the actual geological survey and geochemical anomaly classification of the mineral of the Tianbaoshan Pb Zn mine periphery It is predicted that four possible ore-forming areas of T1, T2, T3 and T4 have been deduced.

【學位授予單位】：成都理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：P631.2;P618.4

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