本文選題：磁法勘探 + 鞍山式鐵礦��； 參考：《吉林大學(xué)》2015年碩士論文

【摘要】：本論文是在國家推動集體制、私營制礦山開發(fā)的前提下,為了深入發(fā)掘中小型礦山的資源開采價值,對現(xiàn)有礦權(quán)進(jìn)行整合再開發(fā),使礦山資源有序接替而進(jìn)行的。在進(jìn)行鞍山式鐵礦的深部勘查應(yīng)用與研究的基礎(chǔ)上,充分利用磁法勘探資料,結(jié)合基礎(chǔ)地質(zhì)工作和以往礦山開采情況,對基本屬于勘查盲區(qū)的宿泥不浪鐵礦進(jìn)行了磁法勘探,對所采集的數(shù)據(jù)進(jìn)行了定性、半定量直至定量的計算、處理、推斷與解釋,總結(jié)了該地區(qū)鐵礦的成礦規(guī)律,圈定了找礦靶區(qū),對同類型礦產(chǎn)資源的調(diào)查提供了參考。通過野外工作與綜合研究,本文取得了如下認(rèn)識及成果:(1)總結(jié)了宿泥不浪地區(qū)鞍山式鐵礦的成礦規(guī)律與找礦特征。即斜長角閃巖作為礦體圍巖,可以作為間接的找礦標(biāo)志;磁異常與斜長角閃巖的磁性參數(shù)進(jìn)行對比,對尋找隱伏巖體有較好的指示作用;宿泥不浪鐵礦成因類型屬于沉積變質(zhì)鐵礦床,礦體受后期變質(zhì)作用影響,容易在局部地段形成富集,所以變質(zhì)程度的強(qiáng)弱,也可以成為間接找礦標(biāo)志。因此,磁測異常成為該地區(qū)鐵床找礦的重要標(biāo)志。(2)在宿泥不浪地區(qū)進(jìn)行了面積為9.38km2的1:1000地面磁法勘探,并對磁測異常進(jìn)行了多種數(shù)據(jù)處理,其中,向上延拓有效地壓制了淺部干擾,突出了深部基底形態(tài),結(jié)合垂向一階導(dǎo)數(shù)、小波分析、解析信號分析等處理結(jié)果進(jìn)行綜合對比分析,為找礦靶區(qū)的圈定提供了依據(jù)。共圈出3個磁力異常區(qū),分別編號為MD1、MD2和MD3,并結(jié)合地質(zhì)資料,確定MD2為該礦區(qū)的找礦靶區(qū)。(3)由于研究區(qū)以往地質(zhì)、地球物理和地球化學(xué)工作幾乎處于空白,因此,為了進(jìn)一步驗證,在MD2異常位置布設(shè)了兩條間距200m的平行激電中梯勘探線。分別對兩條剖面進(jìn)行了正演擬合,獲得了礦體位置的空間展布,后經(jīng)鉆探驗證,發(fā)現(xiàn)4條平行產(chǎn)出的盲礦體,均賦存于斜長角閃巖中,呈透鏡狀產(chǎn)出,走向均為北西向,約320°左右,傾向南西,傾角80°。(4)磁測異常數(shù)據(jù)的各項處理是異常推斷解釋中必不可少的重要一環(huán),既有利于突出有用異常信息,又能便于推斷解釋,應(yīng)從解決地質(zhì)問題的實際出發(fā),選擇選擇合適的數(shù)據(jù)處理方法。(5)標(biāo)本、鉆孔巖心的物性測量以及正演擬合的應(yīng)用,對判識礦與非礦異常、礦體形態(tài)、深度和分布范圍尤為重要。在鉆探的過程中應(yīng)對模型進(jìn)行不斷修正,這對鉆探進(jìn)程和進(jìn)一步發(fā)掘資源儲量具有重要意義。
[Abstract]:This paper is on the premise of promoting collective system and private mine exploitation by the state. In order to excavate the value of the resource exploitation of the medium and small mines, the existing mineral rights are integrated and redeveloped to make the mine resources orderly succeeding. On the basis of the deep exploration of the Anshan type iron mine, the exploration funds of the magnetic method are fully utilized. According to the basic geological work and the mining situation in the past, the magnetic prospecting is carried out on the slime iron ore deposit, which is basically a survey blind area. The data collected are qualitative, semi quantitative, quantitative, processed, deductive and interpreted. The metallogenic regularity of the iron ore in this area is summarized and the prospecting target area is delineated, and the same type of mineral resources are determined. The investigation of resources has provided reference. Through field work and comprehensive research, the following understanding and achievements have been obtained: (1) the metallogenic regularity and prospecting characteristics of Anshan type iron ore are summarized in the area of the non wave area, that is, the diagonal amphibolite, as the rock of the ore body, can be used as an indirect prospecting target, and magnetic anomalies and the magnetic parameters of the diagonal amphibolite are carried out. In contrast, it has a good indication for the finding of hidden rock mass, and the genesis type of the slime non wave iron mine belongs to the sedimentary metamorphic iron deposit. The ore body is influenced by the late metamorphism, it is easy to form and enrich in the local area, so the strength of the metamorphism can also be an indirect prospecting indicator. Therefore, the magnetic anomaly becomes the important mark of the iron bed prospecting in this area. (2) 1:1000 surface magnetic prospecting with area of 9.38km2 was carried out in the non wave area of the mud and mud, and a variety of data processing were carried out on the magnetic anomaly. Among them, the shallow interference was effectively suppressed by the upward extension, the shape of the deep basement was highlighted, the results of the vertical first derivative, the wavelet analysis, the analytic signal analysis and other processing results were combined. It provides a basis for the delineation of the prospecting target area. A total of 3 abnormal magnetic fields were circled, numbered MD1, MD2 and MD3, and the geological data were used to determine the MD2 as the target area for the mining area. (3) the geophysical and geochemical work was almost blank because of the previous geology of the study area. Therefore, in order to further verify, it was laid out in the abnormal position of MD2. Two parallel excitation intermediate ladder exploration lines with distance of 200m, two sections are fitted, and the spatial distribution of the position of the ore body is obtained. After the drilling and verification, 4 parallel output blind ore bodies are found in the diagonal amphibolite, showing a lens like output, the direction is about 320 degrees, tending to South West and 80 degrees (4). The treatment of magnetic anomaly data is an essential part of abnormal inference interpretation. It is not only conducive to the outburst of useful abnormal information, but also easy to deduce and explain. It is necessary to choose the appropriate data processing method from the practice of solving the geological problems. (5) the specimen, the physical measurement of drilling Kong Yanxin and the application of forward fitting, should be judged. The form, depth and distribution of ore bodies are of particular importance. In the process of drilling, the model should be constantly revised, which is of great significance to the drilling process and to further excavate the reserves of resources.
【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P631.2

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本文編號：2001997