基于随机介质模型的二维重力正演  

2D Forward modeling of gravity in random medium

作　　者：刘长扬 罗润林[1] 李亚南[1] 邓海鹏 彭诚 钟伟 谢淑萍 连参军 LIU Changyang;LUO Runlin;LI Yanan;DENG Haipeng;PENG Cheng;ZHONG Wei;XIE Shuping;LIAN Canjun(College of Geoscience,guilin University of Technology,Guilin 541006,Guangxi,China;The Second Exploit Factory,Huabei Gilfield Company,Bazhou 065700,Hebei,China)

机构地区：[1]桂林理工大学地球科学学院,广西桂林514004 [2]华北油田公司第二采油厂,河北霸州065700

出　　处：《矿产与地质》2018年第3期528-533,共6页Mineral Resources and Geology

基　　金：广西隐伏金属矿产勘查重点实验室系统基金(桂科隐13-B-02)资助

摘　　要：岩(矿)石密度的空间分布具有随机性和相关性,采用随机过程的谱分解理论和指数型椭圆自相关函数理论,结合江西德兴某重力勘探剖面资料,建立了随机介质模型,并进行重力异常计算。算例表明,采用随机建模的方法可以很好地模拟实际勘探断面的密度结构,据此计算得到的重力异常特征也与实测的基本一致。因此,在重力资料的解释中,根据实际的地质和密度测试资料建立随机介质模型进行正演计算,有助于对实测异常的识别、分析和解释,提高解释的可靠性。Because the densities of the mines and rocks in the earth is randomly distributed and associated with each others,stochastic models of an exploration profile of gravity in Dexing,Jiangxi were established based on the spectral decomposition and exponential elliptic auto-correlation function theory of stochastic process.The gravity abnormality were computed with these models.It was shown by the examples that the stochastic models fitted the real density structure.What＇s more,the characters of calculated abnormality were almost the same to the measured data.So,It can help people to identify,analyse and interpret the abnormality and to improve the reliability of geological interpretation by the forward simulated results with the stochastic models.

关 键 词：随机介质模型 二维重力正演 岩(矿)石密度 

分 类 号：P631.1[天文地球—地质矿产勘探]