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| THE APPLICATION OF SMALL COAL PIT GOAF GEOPHYSICAL TECHNOLOGY TO THE RAILWAY ENGINEERING GEOLOGICAL EXPLORATION |
| LI Jian |
| China Railway Second Institute Engineering Group Co., Ltd., Chengdu 610031, China |
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Abstract Synthesizing such factors as actual situation of exploration stage, detection depth and detection precision, the authors tentatively discuss the choice and combination of geophysical methods, analyze characteristics of various methods, and sum up the anomaly features reflected by data obtained by various geophysical methods which correspond to coal pit goaf.By utilization of a single geophysical method or integrated geophysical technology in combination with geological and drilling data, we can recognize the development stage of the small coal pit goaf and guide the deployment of the drill holes, thus partially or quite macroscopically solve the problem of detecting small coal pit goaf. In addition, according to geophysical data, we can evaluate the engineering conditions of the goaf.
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Received: 30 August 2012
Published: 10 November 2012
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