Detection technology and application of electromagnetic method for hidden danger of water gushing at coal face
| Autor: | Shu Yan, Jun-mei Fu, Ming-sheng Chen, Xian-xin Shi |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Engineering
business.industry Acoustics Energy Engineering and Power Technology Geotechnical Engineering and Engineering Geology Finite element method Power (physics) Electric power transmission Homogeneous Face (geometry) Point (geometry) Coal Geotechnical engineering Transient (oscillation) business |
| Zdroj: | Journal of Coal Science and Engineering (China). 15:197-205 |
| ISSN: | 1866-6566 1006-9097 |
| DOI: | 10.1007/s12404-009-0217-3 |
| Popis: | The principles, methods, technologies and application effects of several electromagnetic methods for the detection of the hidden danger of water gushing at the coal face were introduced. Also, emphasis was laid on expounding the methods, principles and effects of down-hole detections by electric transmission tomography and transient electromagnetic method. The potential of point power supplied in the underground homogeneous semi-space, as well as the response to a low-resistivity abnormal body in the homogeneous semi-space, was simulated by adopting 3-D finite element method to interpret the basic theory of the electric transmission tomography. The results of actual measurement show that the mine electromagnetic method is sensitive to water-bearing low-resistivity bodies and can play a unique role in detecting the hidden danger of water gushing at the coal face. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink