地质通报
地質通報
지질통보
GEOLOGICAL BULLETIN OF CHINA
2014年
11期
1853-1860
,共8页
许海红%袁炳强%杨高印%刘建利%张春灌
許海紅%袁炳彊%楊高印%劉建利%張春灌
허해홍%원병강%양고인%류건리%장춘관
小子域滤波法%总水平导数%断裂构造%重力资料%银额盆地
小子域濾波法%總水平導數%斷裂構造%重力資料%銀額盆地
소자역려파법%총수평도수%단렬구조%중력자료%은액분지
sub-domain filtering method%total horizontal derivative%fault structure%gravity data%Yin-E basin
为了进一步提高小子域滤波法识别地质体边界的有效性和实用性,以银额盆地EQ区块1∶5万高精度重力资料为基础,分别利用小子域滤波、总水平导数、改进后的小子域滤波联合总水平导数等方法对重力资料进行处理,探讨各种方法的处理效果,并采用联合方法处理结果作为断裂识别的重要依据,推断出EQ区块的断裂构造格架。与地震剖面和电法剖面的解释结果进行对比,证实了推断的断裂,证明该联合方法的有效性。理论模型试验与实际应用结果表明,改进后的小子域滤波与总水平导数计算的联合处理方法将场源体边界锐化,提高了横向分辨能力,突出了地质体边界特征,能更清晰地表现研究区的断裂构造格架。
為瞭進一步提高小子域濾波法識彆地質體邊界的有效性和實用性,以銀額盆地EQ區塊1∶5萬高精度重力資料為基礎,分彆利用小子域濾波、總水平導數、改進後的小子域濾波聯閤總水平導數等方法對重力資料進行處理,探討各種方法的處理效果,併採用聯閤方法處理結果作為斷裂識彆的重要依據,推斷齣EQ區塊的斷裂構造格架。與地震剖麵和電法剖麵的解釋結果進行對比,證實瞭推斷的斷裂,證明該聯閤方法的有效性。理論模型試驗與實際應用結果錶明,改進後的小子域濾波與總水平導數計算的聯閤處理方法將場源體邊界銳化,提高瞭橫嚮分辨能力,突齣瞭地質體邊界特徵,能更清晰地錶現研究區的斷裂構造格架。
위료진일보제고소자역려파법식별지질체변계적유효성화실용성,이은액분지EQ구괴1∶5만고정도중력자료위기출,분별이용소자역려파、총수평도수、개진후적소자역려파연합총수평도수등방법대중력자료진행처리,탐토각충방법적처리효과,병채용연합방법처리결과작위단렬식별적중요의거,추단출EQ구괴적단렬구조격가。여지진부면화전법부면적해석결과진행대비,증실료추단적단렬,증명해연합방법적유효성。이론모형시험여실제응용결과표명,개진후적소자역려파여총수평도수계산적연합처리방법장장원체변계예화,제고료횡향분변능력,돌출료지질체변계특정,능경청석지표현연구구적단렬구조격가。
In order to improve the effectiveness and practicability of sub-domain filtering method for identifying geological boundaries, the authors, based on the 1∶50000 high precision data of gravity in EQ block of the Yin-E Basin, used small sub-domain filtering method, a total horizontal derivative method, and an improved small sub-domain filtering method combined with a total horizontal derivative method to process the gravity anomalies. The results of each method were discussed in this paper. Then the fault structures were inferred on the basis of the results obtained by the combined method. Compared with the interpretation results of the seismic and electrical profile, the combined method can prove the fault structures, which shows the significance and effectiveness of this combined method. Theoretical model test and practical application results show that the combined processing method sharpens the field source boundary, enhances the lateral identification capability, highlights the geological boundary features, and even makes the fault structural framework clearer.