|
|
|
| THE INFLUENCE OF THE TYPE AND PAREMETERS OF THE RECODING GEOMETRY ON GOAF DETECTION |
| TIAN Wei, CHANG Suo-liang, CHEN Qiang |
| Shanxi Shandi Geophy-Tech Co., Ltd., Jinzhong 030600, China |
|
|
|
|
Abstract The design of conventional coal mine three-dimensional seismic exploration observation system focuses its attention on saving acquisition cost and improving efficiency of construction,and hence often uses narrow azimuth half beam line horizontal scrolling observation way;nevertheless,for coal mine fine structure exploration in irregularly-developed goaf,the prospecting effect remains doubtful.On the basis of the ray tracing algorithm for three-dimensional goaf numerical model forward based on an analysis of the observation effects of different observation systems in such aspects as acquisition of footprints,azimuth distribution,and target goaf lighting degree,the authors carried out detailed comparison.The analytical results of six kinds of observation systems and nine kinds of attributes show that the wide azimuth 45° oblique type observation system has obvious advantages in five aspects,and its anomaly response to the geological target of the goaf is the best.
|
|
Received: 30 August 2012
Published: 10 November 2012
|
|
|
|
|
|
|
|
|
