Grouting Reinforcement of Governance on Detecting Evaluation of Goaf by Using GPR

2013 ◽  
Vol 353-356 ◽  
pp. 347-351
Author(s):  
Jin Kui Li ◽  
Liu Jie Du ◽  
Jing Jing Li

The existence of underground goaf causes serious harm to the security and stability of the surface installations. Using the ground penetrating radar (GPR) detects the nine road in Jinzhou District of Dalian across the railway line three goaf grouting reinforcement. This article introduces the principles and technical methods of GPR, including data acquisition and data processing of GPR, discussing the effect of using GPR technology to detect the superficial goaf.

Author(s):  
Ilaria Catapano ◽  
Gianluca Gennarelli ◽  
Giovanni Ludeno ◽  
Francesco Soldovieri ◽  
Raffaele Persico

Author(s):  
Tahar Bachiri ◽  
Gamil Alsharahi ◽  
Abdellatif Khamlichi ◽  
Mohammed Bezzazi ◽  
Ahmed Faize

2013 ◽  
Vol 438-439 ◽  
pp. 1080-1083 ◽  
Author(s):  
Hui Ren Bai ◽  
Jing Jing Li

The paper mainly introduces the problem of grouting reinforcement of buildings over the old goaf, and presents to the positioning of grouting reinforcement technology in the goaf. Combined with engineering example, the paper discusses the grouting filling method to strengthening governance goaf. Three methods including drill detection, ground penetrating radar (GPR) detection and electromagnetic wave CT method are used for integrated detection.


2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Francesco Soldovieri ◽  
Erica Utsi ◽  
Raffaele Persico ◽  
Amir M. Alani

The Romano-British site of Barcombe in East Sussex, England, has suffered heavy postdepositional attrition through reuse of the building materials for the effects of ploughing. A detailed GPR survey of the site was carried out in 2001, with results, achieved by usual radar data processing, published in 2002. The current paper reexamines the GPR data using microwave tomography approach, based on a linear inverse scattering model, and a 3D visualization that permits to improve the definition of the villa plan and reexamine the possibility of detecting earlier prehistoric remains.


2011 ◽  
Vol 243-249 ◽  
pp. 5381-5385 ◽  
Author(s):  
Ji Shun Pan ◽  
Lei Yang ◽  
Yuan Bao Leng ◽  
Zhi Quan Lv

Based on the ground penetrating radar's work mechanism, this article briefly introduces the working principle and the data processing method of ground penetrating radar detecting the tunnel lining. In view of the lining quality detection's characteristics, it summarizes a series of atlas reflection characteristic of the examination target such as the lining thickness, the backfill quality, the steel bar reinforcement situation, the adjacent formation structural feature and so on, and analyses and comments on them with project examples. The research believes that under appropriate working condition, as an important means to guarantee the construction security and maintain the tunnel health, ground penetrating radar technology can examine the lining quality fast and effectively, and meet the needs of the tunnel lining quality detection with suitable equipment, working method and data processing plan.


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