| Autor: |
Jia‐Lin Wang, Bai‐Yao Ruan, Jun‐Ge Huang |
| Rok vydání: |
2006 |
| Předmět: |
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| Zdroj: |
Chinese Journal of Geophysics. 49:1375-1385 |
| ISSN: |
0898-9591 |
| Popis: |
The distribution of electric field around the tunnel is different from that in full space because of the tunnel-cavity effect. Taking the infinite plate for instance, the distribution of electric field in full space is solved and detect-thickness ratio is presented to discuss the limit of advanced detection in this paper. The apparent resistivity on small spacing of electrodes is influenced, but the anomaly of geologic-bodies ahead of the tunnel is not screened from tunnel-cavity's effect. The calculating results of many models show that the place of the anomalous extreme is 5~10 times of the plate and influenced with thickness and electric property of the plate. It is difficult to conclude the geologic body only using the place of the anomalous extreme. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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