本文關(guān)鍵詞： 航磁梯度 轉(zhuǎn)換處理 方法技術(shù) 應(yīng)用解釋 優(yōu)勢分析　出處：《中國地質(zhì)大學(xué)(北京)》2016年博士論文　論文類型：學(xué)位論文

【摘要】：完成了磁梯度數(shù)據(jù)的轉(zhuǎn)換處理方法理論研究,主要包含有梯度數(shù)據(jù)上延理論公式推導(dǎo)、模型理論研究和實(shí)例應(yīng)用分析,理論公式的推導(dǎo)證明航磁梯度數(shù)據(jù)完全可以作相應(yīng)的化極轉(zhuǎn)換處理,但是通過理論模型試驗(yàn)發(fā)現(xiàn)在地磁傾角大于20°的工作區(qū)域采集到的梯度數(shù)據(jù)可以進(jìn)行化極處理,而在地磁傾角為0°—18°之間的梯度數(shù)據(jù)經(jīng)過化極后的效果并不理想,即在這個(gè)緯度區(qū)間內(nèi)梯度數(shù)據(jù)的化極作用并不能得到很好地體現(xiàn);梯度數(shù)據(jù)上延理論公式推導(dǎo)、模型理論研究和實(shí)例應(yīng)用分析,梯度數(shù)據(jù)的上延處理突出了淺部的異常體,對相對埋藏較深的異常體進(jìn)行了壓制,但這是在梯度數(shù)據(jù)相對于總場而言突出淺部異常體的前提下成立的,這為在梯度解釋中分離深部異常體和淺部異常體提供了有效證明;斜導(dǎo)數(shù)方法在地質(zhì)體邊界上的提取理論模型研究和實(shí)例應(yīng)用分析,通過模型試驗(yàn)和實(shí)際數(shù)據(jù)的應(yīng)用可知,利用斜導(dǎo)數(shù)方法判斷地質(zhì)體邊界具有較好的地質(zhì)效果,另實(shí)測的梯度數(shù)據(jù)的利用斜導(dǎo)數(shù)方法的反映好于由總場轉(zhuǎn)換而來的梯度數(shù)據(jù)。利用航磁及航磁梯度數(shù)據(jù),運(yùn)用所研究的化極、上延及斜導(dǎo)數(shù)方法等開展了保定梯度試驗(yàn)區(qū)的地質(zhì)找礦解釋方法技術(shù)研究,對保定梯度試驗(yàn)區(qū)開展了異常選編、巖體邊界圈定、斷裂構(gòu)造劃分及找礦遠(yuǎn)景區(qū)劃分的主要工作,并形成了一套利用梯度數(shù)據(jù)開展地質(zhì)解釋的思路,為今后利用梯度數(shù)據(jù)進(jìn)行地質(zhì)解釋奠定了基礎(chǔ)。分析了梯度數(shù)據(jù)在斷裂構(gòu)造劃分、壓制和提取異常信息及磁和磁梯度數(shù)據(jù)聯(lián)合研究減少地質(zhì)多解性的特點(diǎn)。同時(shí)分析了梯度數(shù)據(jù)在異常提取方面的優(yōu)勢,梯度數(shù)據(jù)反映的是高頻成分,也就是淺部磁性地質(zhì)體所產(chǎn)生的異常信息,淺部的異常信息應(yīng)該位于能進(jìn)行正常的人工采礦作業(yè)的深度位置,有可能更深,因此對于淺部的礦產(chǎn)所產(chǎn)生的異常信息,梯度數(shù)據(jù)是完全能夠反映出來的。另外,航磁全軸梯度的測量在中低緯度和低緯度地區(qū)具有航磁總場測量無可比擬的優(yōu)勢,那就是航磁總場數(shù)據(jù)在進(jìn)行巖體圈定、構(gòu)造推斷解釋和成礦遠(yuǎn)景預(yù)測時(shí)需要進(jìn)行化極或化赤后才能進(jìn)行位場數(shù)據(jù)處理,也就是算出梯度數(shù)據(jù),從而進(jìn)行較準(zhǔn)確的分析,而中低緯度和低緯度地區(qū)的化極和化赤問題一直被公認(rèn)為是比較難的課題,即使做了化極或化赤處理,效果的理想程度還有待于進(jìn)一步的確認(rèn),但是如果采集航磁全軸梯度數(shù)據(jù),不僅直接得到了梯度數(shù)據(jù),而且還可以利用梯度數(shù)據(jù)轉(zhuǎn)換成總場數(shù)據(jù)配合實(shí)測的梯度數(shù)據(jù)進(jìn)行異常的選編工作,大大降低了工作難度。
[Abstract]:Complete conversion of magnetic gradient data processing method of theoretical research, mainly includes gradient data extension of theoretical derivation, theoretical research and case analysis application model, the theoretical formula of aeromagnetic gradient data can prove the corresponding pole conversion processing, but through the theoretical model test found the work area to collect the gradient data more than 20 degrees in the geomagnetic inclination can be reduced to the pole, and the geomagnetic inclination for gradient data between 0 ~ 18 degrees after the pole effect is not ideal, namely gradient in this latitude range data of polar effect and can not be well reflected; gradient data extension formulas are derived. The theory study and case analysis application model, gradient data extension processing highlights the shallow anomaly, the anomaly body relatively deep were suppressed, but this is in relative gradient data The establishment of prominent shallow anomaly in the premise of the total field, which provides effective evidence for the separation of the deep and shallow anomaly anomaly in gradient interpretation; analysis of oblique derivative method in geological body boundary extraction theory model research and application, through the application of the model test and the actual data, judgment the geological boundary has good geological effect by the oblique derivative method, gradient data using oblique derivative method to reflect the gradient data measured is better than the other from total conversion comes. Using aeromagnetic and aeromagnetic gradient data, by applying the research on pole, and the tilt derivative method to carry out geological Baoding gradient test prospecting methods of interpretation technology, Baoding test area to carry out the selection of gradient anomaly, rock boundary delineation, mainly tectonic division and prospecting area division, and the formation of arbitrage Geological interpretation of the idea of developing the gradient data, laid the foundation for the future use of gradient data for geological interpretation. Analysis of gradient data of fault structure in division, pressing and extracting anomaly information and magnetic gradient data combined with geological study to reduce the ambiguity characteristics. At the same time analyzed the gradient data in the anomaly extraction advantage the gradient data reflect the high frequency components, the abnormal information is generated by the magnetic geologic body in shallow, shallow anomaly information should be located to the normal position of the depth of artificial mining operations, there may be deeper, because of the abnormal information about shallow mineral produced by gradient data is able to reflect. In addition, the measurement of aeromagnetic axial gradient has the advantages of aeromagnetic total field measurement There is nothing comparable to this at middle and low latitudes and low latitudes, the aeromagnetic total field data in the delineation of rock mass, Tectonic and metallogenic prediction interpretation requires extreme or red to potential field data processing, also is to calculate the gradient data, then carries on the analysis more accurate, while the low latitude and low latitude area of the pole and the red has been recognized as a difficult task, even if the polar or red, ideal effect has yet to be further confirmed, but if the acquisition of aeromagnetic axial gradient data, not only from the gradient data, but also can be converted into the data field with gradient data measured by abnormal selection gradient data, greatly reduce the difficulty of the work.

【學(xué)位授予單位】：中國地質(zhì)大學(xué)(北京)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2016
【分類號】：P631.222

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 賈偉潔;郭華;李遷;;ASTER遙感影像與航磁梯度數(shù)據(jù)綜合應(yīng)用[J];吉林大學(xué)學(xué)報(bào)(地球科學(xué)版);2015年04期

2 郭華;王平;朱春華;杜穎;;向上延拓對航磁梯度數(shù)據(jù)的影響及其規(guī)律研究[J];地球物理學(xué)進(jìn)展;2015年03期

3 郭華;賈偉潔;王平;謝汝寬;;航磁梯度數(shù)據(jù)在磁性地質(zhì)體邊界判斷方面的研究[J];吉林大學(xué)學(xué)報(bào)(地球科學(xué)版);2015年01期

4 郭華;吳成平;;航磁梯度數(shù)據(jù)與地質(zhì)異常反映之間的關(guān)系[J];地球物理學(xué)進(jìn)展;2014年04期

5 張恒磊;Y.R.Marangoni;左仁廣;胡祥云;;改進(jìn)的各向異性標(biāo)準(zhǔn)化方差探測斜磁化磁異常源邊界[J];地球物理學(xué)報(bào);2014年08期

6 吳文賢;范文玉;王永華;吳振波;楊劍;焦彥杰;高建華;鄒光富;鄧珂;;基于總梯度模分析的磁源體邊界信息提取及找礦意義[J];地質(zhì)與勘探;2013年06期

7 郭華;王平;謝汝寬;;航磁全軸梯度數(shù)據(jù)地質(zhì)解釋優(yōu)勢研究[J];地球物理學(xué)進(jìn)展;2013年05期

8 線紀(jì)安;郭玉峰;梁建;陳冬;;實(shí)測航磁ΔT三維梯度與由ΔT數(shù)據(jù)換算的三維梯度數(shù)據(jù)的異同[J];地質(zhì)找礦論叢;2013年02期

9 馬國慶;杜曉娟;李麗麗;李文成;王鳳剛;;梯度反褶積法及其在礦產(chǎn)勘探中的應(yīng)用[J];吉林大學(xué)學(xué)報(bào)(地球科學(xué)版);2013年01期

10 張恒磊;胡祥云;劉天佑;;基于二階導(dǎo)數(shù)的磁源邊界與頂部深度快速反演[J];地球物理學(xué)報(bào);2012年11期

相關(guān)博士學(xué)位論文 前2條

1 李海俠;航磁梯度異常的延拓與轉(zhuǎn)換方法研究[D];浙江大學(xué);2009年

2 郭志宏;航磁及梯度數(shù)據(jù)正反演解釋方法技術(shù)實(shí)用化改進(jìn)及應(yīng)用[D];中國地質(zhì)大學(xué)（北京）;2004年

，

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