Research on Detection of Breaking Rock Zone of Roadway Surrounding Rock with Ground Penetrating Radar

2013 ◽  
Vol 353-356 ◽  
pp. 886-889
Author(s):  
Fu Jun Zhang ◽  
Hai Feng Cui ◽  
Yi Rui Hao
Keyword(s):  
Image Analysis ◽  
Ground Penetrating Radar ◽  
Surrounding Rock ◽  
Radar Detection ◽  
Field Detection ◽  
Ground Penetrating ◽  
Detection Principle

Based on the detection principle of ground penetrating radar, the feasibility of detecting breaking rock zone of roadway surrounding rock with ground penetrating radar is analysed. In the case of detecting breaking rock zone of roadway surrounding rock in Huafeng Colliery, the method of radar detection and image analysis is suggested. The results show that using ground penetrating radar to detect breaking rock zone of roadway surrounding rock can achieve good result, so it provides a new technical way for the field detection.

Nondestructive Test on Typical Roadway Supports of a Mine via Drilling Core and Ground Penetrating Radar

2011 ◽  
Vol 368-373 ◽  
pp. 2411-2416
Author(s):  
Jian Ping Han ◽  
Hai Peng Liu
Keyword(s):  
Ground Penetrating Radar ◽  
Geological Structure ◽  
Surrounding Rock ◽  
Potential Threat ◽  
Real Performance ◽  
Design Requirements ◽  
And Performance ◽  
The Stability ◽  
Ground Penetrating ◽  
Drilling Core

Temporary or permanent supports are necessary in underground construction for maintaining the stability and limiting the damage of surrounding rock. Due to the uncertainty of geological structure, the specificity of the underground environment as well as other factors, the quality and performance of supporting structure are often difficult to satisfy the design requirements, which not only seriously affects the normal construction and operation of mines but also has the potential threat to the safety of underground production. In order to investigate the influence of the unfavorable geologic environment on supporting concrete and evaluate the real performance of roadway supports of a mine, 17 typical projects were chosen and the strength of supporting concrete was detected by nondestructive drilling core method. The result shows that the strength is widely less than the design value. Furthermore, 4 projects of them were investigated by the ground penetrating radar (GPR) in order to evaluate the feasibility of GPR in the performance investigation of the roadway supports of a mine. The results indicate that ground penetrating radar is capable of measuring the thickness of the support, the distribution of rebars and the defects of the surrounding rock.

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