【作者】 李美梅；

【导师】 杨进；

【作者基本信息】 中国地质大学（北京） ， 地球探测与信息技术， 2010， 硕士

【摘要】 电法勘探是综合地球物理勘探方法中的基本方法之一。高密度电阻率法作为电法勘探方法的一个分支,是一种多快好省的勘探方法,在城市工程、环境地质调查、地质找水、考古、管线探测等方面发挥出重要作用,并取得良好效果,在岩溶、构造、检测等领域,高密度电法的应用效果,也远远超过了理论上的预期。本文系统的讨论了高密度电阻率法的基本理论、历史发展和研究现状、正演模拟的发展、反演技术的进步、以及高密度电阻率法仪器随着国民经济和计算机技术的发展的飞而速发展历程,对高密度电阻率法的野外工作技术方法、数据采集及处理、二维成像及应用等方面进行了介绍,同时介绍了进行数据预处理剔除突变点的方法。在本文中,首先进行了高密度参数处理的研究,简述了常规的参数处理方法,再对不同的比值参数进行研究,分别对λ或G参数、T比值参数和H纵向分辨率比值效应参数进行了研究,综述了各参数处理的研究结果。其次对高密度电阻率法正反演进行了研究。验证应用软件的可靠性和实用性后,应用软件工具,对理论模型进行正演,再对所得正演数据加入百分之五的噪声进行反演;研究不同深度条件下目标体异常反应以及不同装置条件下目标体异常响应特征,具体来说,分别对比正演模拟结果、反演模拟结果、以及对比反演成果与正演理论模型。对不同深度或装置条件下目标体的正反演结果进行了讨论,总结了高密度电阻率法几种测量装置的反演规律,为野外工作装置的选取提供了理论依据和参考经验。最后,按照工作设计和工区的地形地质条件,以找矿为目的,突出重点成果,应用汉化后的软件,对所选用的三个勘探实例进行数据处理。综合应用高密度激电理论和方法,利用反演技术,分析了选用的三个应用实例的成果,通过视电阻率拟断面图,研究矿体的形态、规模及向深部的延伸情况。更多还原

【Abstract】 Electrical prospecting is a comprehensive geophysical exploration method in the basic methods. Multi-electrode resistivity method as a branch of electrical exploration, is a better and more economical exploration method, and has played a major role in urban engineering, environmental geological survey, geology for water, the archaeological, pipe and cable detection, and some other areas. In karst, hydrology, construction, testing and other areas, the application of Multi-electrode resistivity method is far greater than the theoretical expectations.This paper systematically discuss the basic theory , history, development and research status, inversion techniques of high-density resistivity method , and study the equipment progress with the national economy’s development and computer technology progress. In this paper, we also described removing mutations method of data pre-processing. In this paper, previously, high-density parameters were researched, treatmentmethod of conventional parameters was outlined, then the different ratio parameters can be studied, respectively, on theλor G, and T parameter, the research conclusion and effects of the ratio parameters is shown. Second, the forward modeling and inversion of high density resistivity were studied. The reliability and application of res2dmod was verified, and then forward modeling was done on the theory model by using those programs as a tool. 5 percent noise was added in available forward data for inversion data; the abnormal response characteristics of different depth was studied with geological body, as well as different arrays , in details, the modeling and inversion results were compared, and then the inversion results compared with the theoretical model forward. We had a conclusion of different depths or arrays, the inversion law of different arrays was summarized, which provide a theoretical basis and reference to field work equipment selected .At last, In accordance with the design work and the topographic and geologic conditions of work area, prospecting purpose focused on important outcomes, Datum from field work was processed by Chinese Version with RES2DINV. Applying in professional theories and methods of High density and IP method ,the results of three selected application examples were analyzed by using inversion techniques, in those inversion graphs, ore body shape, size and condition to the extension of the deep were shown.更多还原