2018 17th International Conference on Ground Penetrating Radar (GPR)最新文献_第6页

Feasabiliy of the use of coherent dielectric interfaces as a GPR analysis methodology in the context of coastal masonry: An experimental approach 在沿海砌体的背景下，使用相干介电界面作为探地雷达分析方法的可行性:实验方法

2018 17th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2018-06-01 DOI: 10.1109/ICGPR.2018.8441554

C. Sachet, P. Sentenac, D. Leparoux, P. Côté, Christopher Boulay, Matthieu Molinie

{"title":"Feasabiliy of the use of coherent dielectric interfaces as a GPR analysis methodology in the context of coastal masonry: An experimental approach","authors":"C. Sachet, P. Sentenac, D. Leparoux, P. Côté, Christopher Boulay, Matthieu Molinie","doi":"10.1109/ICGPR.2018.8441554","DOIUrl":"https://doi.org/10.1109/ICGPR.2018.8441554","url":null,"abstract":"The durability of coastal masonry structures is the controlling factor in determining the risks of defects propagation in piers, jetties, harbors, seawalls, etc... This work proposes a methodology in adequacy with the problems met on these structures on the field, for the processing and for the interpretation of the data. The methodology proposed aims to be easily implemented by the user in order to obtain results from a GPR investigation on coastal man-made masonry structures. The process uses an initial visualization and selection of coherent dielectric reflectors showing lateral phase continuity which defines their time-space positions and amplitudes. The selection of each reflector from a profile to another is based on a sufficient gridding of the area investigated and on its shape (geometry, intensity and depth). The consistency of the reflectors selected will be demonstrated by their interpolation and mapping. Their amplitudes will be mapped and will enable the user to interpret the relative variability of the reflectors in terms of depth and energy backscattered. The amplitude added to the reflectors 3D positions will provide the key information at this scale of interest. The proposed methodology has been validated and its accuracy discussed, as well as its limitations considering its application. The mapping successfully ensured consistency compared to other ground investigation methods. Thus, this method could be jointly used with other geophysical or geotechnical methods as part of a larger ground investigation. More particularly, the resulting mapping may be used to constrain geotechnical models, image-guided ERT inversion or any other geophysical investigation.","PeriodicalId":269482,"journal":{"name":"2018 17th International Conference on Ground Penetrating Radar (GPR)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132993649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Multi - frequency GPR Data Fusion Method for Underground Disease Detection 一种用于地下病害探测的多频GPR数据融合方法

2018 17th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2018-06-01 DOI: 10.1109/ICGPR.2018.8441538

Xu Xianlei, Liang Junpeng, Ma Zheng

引用次数: 2

Ground penetrating radar investigation of an ancient Spanish fortress: The Fort of San Diego, Acapulco, Mexico 探地雷达对古代西班牙堡垒的调查:墨西哥阿卡普尔科的圣地亚哥堡垒

2018 17th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2018-06-01 DOI: 10.1109/ICGPR.2018.8441550

J. Ortega-Ramirez, M. Bano, L. A. Villa-Alvarado, R. Junco-Sánchez, M. Pifia-Cetina, S. Estrada-Apatiza, J. C. Vera-Sanchez, A. Hernández-López

引用次数: 2

Investigation of the structural substance of roads via georadar and ultrasound 利用地质雷达和超声波对道路结构物质进行研究

2018 17th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2018-06-01 DOI: 10.1109/ICGPR.2018.8441626

G. Kneib, D. Jansen, B. Wacker

{"title":"Investigation of the structural substance of roads via georadar and ultrasound","authors":"G. Kneib, D. Jansen, B. Wacker","doi":"10.1109/ICGPR.2018.8441626","DOIUrl":"https://doi.org/10.1109/ICGPR.2018.8441626","url":null,"abstract":"Aging of roads and the necessity of planning and performing maintenance measures ask for reliable and economic investigation methods to characterize the structural substance of roads. Nondestructive measurements via georadar and ultrasound have been performed on the surface of a split mastix asphalt test road at the Federal Highway Research Institute of Germany. Sections of the test road had been systematically altered by simulation of traffic load. Common-offset georadar measurements reveal the basic layer structure of the road down to 0.90 m. Common-midpoint measurements show that electromagnetic direct wave speed at loaded road sections is few percent higher and attenuation lower than at non-damaged sections. Reflections at 0.05 m, 0.15 m and 0.90 cm depth could be identified that went along the known road layering. Radar wave propagation velocity decreases with depth by several percent within the road body. Ultrasound common-midpoint measurements at the same locations and nearly identical data processing than for the electromagnetic waves yield wave speeds of P-waves, SH-waves and Rayleigh surface waves and reflections from the road body. Mechanical loads did not affect ultrasound compressional wave velocity but it reduced shear and surface wave speed by few percent. A relation between electromagnetic and dynamic mechanical material properties may be established that could be used to indicate the state of the structural substance of roads by either method and to combine the advantages of fast georadar acquisition with the benefit of ultrasound to probe mechanical properties.","PeriodicalId":269482,"journal":{"name":"2018 17th International Conference on Ground Penetrating Radar (GPR)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129185735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Deep Penetration Radar: Hydrogeology and Paleorelief of Underlying Medium 深穿透雷达:水文地质与下伏介质古地貌

2018 17th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2018-06-01 DOI: 10.1109/ICGPR.2018.8441525

I. Prokopovich, P. Morozov, A. Popov, V. Kopeikin, A. Berkut, L.M. Krinitsky

引用次数: 0

GPR tomography in a water saturated context using a 13 boreholes configuration 在饱和水环境下使用13个井眼配置的GPR断层扫描

2018 17th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2018-06-01 DOI: 10.1109/ICGPR.2018.8441551

N. Belkowiche, H. Jourde, J. Rolando, G. Massonnat, G. Sénéchal, D. Rousset

{"title":"GPR tomography in a water saturated context using a 13 boreholes configuration","authors":"N. Belkowiche, H. Jourde, J. Rolando, G. Massonnat, G. Sénéchal, D. Rousset","doi":"10.1109/ICGPR.2018.8441551","DOIUrl":"https://doi.org/10.1109/ICGPR.2018.8441551","url":null,"abstract":"This study takes part in an integrated project whose goal is to characterize the permeability heterogeneity controlling the water flow in a saturated environment. Our approach, as part as this project, is based on the use of ground penetrating radar (GPR) in order to determine the water content by means of an EM velocity model. We investigate a porous, permeable and water saturated formation (bioclastic limestones dating from the Burdigalian). The studied area is located in the South of France, near the city of Montpellier. Thirteen vertical 35 meters deep boreholes, including 3 continuous cores, were drilled in 2016. A total of 32 tomographies have been acquired between the 13 wells with 100 MHz antennas. In addition to the tomographies, GPR log has been carried out in each well with 250 MHz antennas. The 32 dataset have been separately inverted in order to obtain 32 2D velocity models. These inversions were based on the SIRT (Simultaneous Iterative Reconstruction Technique) algorithm. The analysis of these 2D models shows velocity variations interpreted as water content heterogeneities. Correlations between tomographies, logs and core measurements show strong similarities in terms of global trend. However, absolute velocity differences between each panel justify 3D perspectives.","PeriodicalId":269482,"journal":{"name":"2018 17th International Conference on Ground Penetrating Radar (GPR)","volume":"1930 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129055780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Coal Subsurface Mapping for Selective Mining 选择性开采煤地下制图

2018 17th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2018-06-01 DOI: 10.1109/ICGPR.2018.8441594

A. Strange, Z. Jecny

引用次数: 2

Application of Synchrosqueezing Short Fourier transform analysis in Ground Penetrating Radar thin layer Recognition 同步压缩短傅里叶变换分析在探地雷达薄层识别中的应用

2018 17th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2018-06-01 DOI: 10.1109/ICGPR.2018.8441648

L. Qiao, Yao Qin

引用次数: 0

Study of Tower Structure of the Octagonal Tower Based on GPR 基于探地雷达的八角形塔架结构研究

2018 17th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2018-06-01 DOI: 10.1109/ICGPR.2018.8441612

L. Liu, Y. Liu, Z. Hu, R. Qian

{"title":"Study of Tower Structure of the Octagonal Tower Based on GPR","authors":"L. Liu, Y. Liu, Z. Hu, R. Qian","doi":"10.1109/ICGPR.2018.8441612","DOIUrl":"https://doi.org/10.1109/ICGPR.2018.8441612","url":null,"abstract":"Manghong Octagonal Tower (MOT) was built in the Qing dynasty Kangxi period (BC 1662~ BC 1722). The tower's architectural style and tower pattern blend Confucianism, Taoism and Buddhism culture. It has been the spiritual ballast of the local residents since its completion and plays an important role in sacrificial activities. The tower also has important archaeological value for studying the architectural characteristics and economic culture of Qing Dynasty in China. We can't obtain internal structure information of MOT, which is formed by the verrucano stone. However, because of some reasons such as age, geological subsidence and erosion, the tower tilts. Tower structure has been reformed in maintenance work. It's difficult to obtain the changes of tower structure on the surface. The structure of the tower is an important factor affecting the force change and tilt of the tower, so it is an urgent problem for the protection of cultural relics and archaeological research to analyze the structural characteristics of the tower and the existence of hidden defects without damaging the body of the tower. In this paper, we use GPR to detect the structure of stony MOT in different heights. We set up a dense detection lines with a line distance of 0.20 m to detect the structure of stone in high resolution and analyze the distribution characteristics of the tower so as to provide guidance for the protection of historic building architectural relics. The results show that the body of MOT forms mainly composed of two layers of crossed stone and the south wall is thicker. There is no darkroom or empty in tower foundation. The tilt of the tower, which has a great harm, will further cause unequal force to cause cracks in the tower body, so the protection measures should be taken on the premise of avoiding the man-made destruction of the tower.","PeriodicalId":269482,"journal":{"name":"2018 17th International Conference on Ground Penetrating Radar (GPR)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127347580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research on the Geological Radar Antenna for Application in Full Space of Mine Roadway 矿山巷道全空间地质雷达天线应用研究

2018 17th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2018-06-01 DOI: 10.1109/ICGPR.2018.8441616

Xu Xianlei, Ma Zheng, Liang Junpeng, Xie Dongshan

引用次数: 0