堤防隐患探测实例分析   总被引：2，自引：0，他引：2  

石念增  刘康和 《地质灾害与环境保护》2005,16(4):376-382

在堤防隐患探测中，采用地质雷达、高密度电法、电测深法、地震折射波法等综合物探技术，并结合少量的土工试验资料，提高了物探成果的可靠性和实用性，取得了良好的应用效果．为堤防隐患探测提供了新的思路。  相似文献   

Lithology-derived structure classification from the joint interpretation of magnetotelluric and seismic models     

P. A. Bedrosian  N. Maercklin  U. Weckmann  Y. Bartov  T. Ryberg  O. Ritter 《Geophysical Journal International》2007,170(2):737-748

Magnetotelluric and seismic methods provide complementary information about the resistivity and velocity structure of the subsurface on similar scales and resolutions. No global relation, however, exists between these parameters, and correlations are often valid for only a limited target area. Independently derived inverse models from these methods can be combined using a classification approach to map geologic structure. The method employed is based solely on the statistical correlation of physical properties in a joint parameter space and is independent of theoretical or empirical relations linking electrical and seismic parameters. Regions of high correlation (classes) between resistivity and velocity can in turn be mapped back and re-examined in depth section. The spatial distribution of these classes, and the boundaries between them, provide structural information not evident in the individual models. This method is applied to a 10 km long profile crossing the Dead Sea Transform in Jordan. Several prominent classes are identified with specific lithologies in accordance with local geology. An abrupt change in lithology across the fault, together with vertical uplift of the basement suggest the fault is sub-vertical within the upper crust.  相似文献   

Tectonic Evolution and Hydrogeological Characteristics of the Khanaser Valley,Northern Syria,Derived from the Interpretation of Vertical Electrical Soundings     

J. Asfahani  Y. Radwan 《Pure and Applied Geophysics》2007,164(11):2291-2311

The Khanaser Valley was geoelectrically thoroughly surveyed through a grid which consisted of twelve VES profiles. The tectonically-oriented Pichgin and Habibullaev method was enhanced to be applicable in areas of rugged relief and topography. The enhanced profiles were tectonically interpreted and subsurface structures within the Khanaser Valley were delineated. Accordingly, a tectonic evolutional scenario of the valley was established and its hydrogeological characteristics were derived. An approach for groundwater exploration in areas of prominent relief and topography in dry areas such as the Khanaser Valley was established and its validity was estimated.  相似文献   

ACTIVE system for monitoring volcanic activity: A case study of the Izu-Oshima Volcano,Central Japan     

Hisashi Utada  Yuji Takahashi  Yuichi Morita  Takao Koyama  Tsuneomi Kagiyama 《Journal of Volcanology and Geothermal Research》2007

A system is proposed for the monitoring of changes in the underground structure of an active volcano over time by applying a transient electromagnetic method. The monitoring system is named ACTIVE, which stands for Array of Controlled Transient-electromagnetics for Imaging Volcano Edifice. The system consists of a transmitter dipole used to generate a controlled transient electromagnetic (EM) field and an array of receivers used to measure the vertical component of the transient magnetic field at various distances, with automatic operation of both units. In order to verify the performance of the proposed system, numerical and field experiments were carried out by application of the system to the Izu-Oshima volcano, where a remarkable change in the apparent DC resistivity over time had been detected in association with the eruption in 1986.  相似文献   

光学测微器的原理、检定及误差分析   总被引：4，自引：1，他引：4  

路杰 《测绘信息与工程》2002,27(4):23-24

着重讨论了高精度光学测微器的基本工作原理、检定方法及误差分析。  相似文献   

光电式互感器的研究和发展及其在电力系统中的应用   总被引：12，自引：0，他引：12  

易本顺 《武汉大学学报(信息科学版)》2002,27(1):57-62

在电力系统中，光学传感器较之传统的电气传感器具有本质上的优越性。叙述了近年来电流互感器（OCT）、光学电压互感器（OVT）在实际电力系统中的应用方面的研究及发展，详细总结了从110kV三相OCT到500k V组合式光学电流电压测量系统（OMU）等实际项目的研究工作。对光学电流互感器的一些新型设计进行了探讨，并展望了应用于电站的基于光纤传感、光纤监控、光纤通信及光纤继电保护的光纤局域网。  相似文献   

高密度电法测量系统作常规联合剖面的研究     

龚道平 《华东地质学院学报》2002,25(3):233-236,270

研究了运用高密度电法观测系统作常规电法联合剖面的野外工作方法及数据整理过程，运用高密度电法观测系统，将高密度电法测量与常规联合剖面测量同时进行，有利于对异常体作分析解释。  相似文献   

用MAPGIS二次开发绘制物探电法原始数据图     

李海泉  黄辉  宫元吉 《黄金地质》2002,8(2):62-66

将物探电法的测点数据及测点的大地直角坐标按每条测线上测点由西向东的顺序 ,以统一编号、线号、点号、横坐标、纵坐标、测点数据为字段建成MicrosoftAccess数据库。根据制图比例尺和测点的大地直角坐标逐个计算数据库中所有测点在图纸上的坐标值 ,绘制测点位置子图 ,并在测点位置沿垂直测线方向向东移动 1/ 2测点数据注释的字符宽度 ,并以测点位置为圆心顺时针旋转 6 0°的位置绘制测点数据注释。按照上述方法 ,以MicrosoftVC + + 6 0为工具 ,利用MAPGIS 6 1地理信息系统二次开发技术 ,编制数据处理程序 ,实现电法原始数据图的微机制图  相似文献   

对山西应县木塔采用纳米复合纤维加固的建议   总被引：9，自引：0，他引：9  

李大华  徐扬  郑鹄 《山西地震》2001,(4):24-25

山西应县木塔是古人留给我们的稀世珍宝，如何妥善地保护好这一珍贵的遗产，使之在加固时尽量保持原有的风貌，是一项复杂而艰巨的任务。根据长期的研究成果和实际工作的经验，提出了用纳米复合纤维加固应县木塔的建议，介绍了纳米复合纤维材料的特点，分析讨论了加固时的一些具体技术问题。  相似文献   

Electrical resistivity structure of the Valu Fa Ridge, Lau Basin, from marine controlled‐source electromagnetic sounding     

Lucy MacGregor  Martin Sinha  Steven Constable 《Geophysical Journal International》2001,146(1):217-236

  相似文献