| 地震CT及其地质解释 |
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| 引用本文： | 赵永贵,任汉章.地震CT及其地质解释[J].地质科学,1997,32(1):96-102. |
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| 作者姓名： | 赵永贵 任汉章 |
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| 作者单位： | 1. 中国科学院地质研究所 北京 100029;2. 金川有色金属公司龙首矿 甘肃金昌 737102 |
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| 摘 要： | 在金川公司龙首矿东采区1 280中段井下500m深的巷道中应用地震CT技术进行寻找深部隐伏矿体的实验。波速图像表明,研究区内中西部有一高速异常区,推断为花岗岩体和含矿的超基性侵入岩体。区内还有一个横贯测区中央近东西走向的低速断裂带。这些推断结果为后期的钻探和巷道开掘所证明。
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| 关 键 词： | 地震CT 波速图像 含矿岩体 断裂带 |
| 收稿时间： | 1995-06-10 |
| 修稿时间： | 1995-06-10; |
MINING APPLICATION OF SEISMIC TOMOGRAPHY AND ITS GEOLOGICAL INTERPRETATION |
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| Zhao Yonggui,Wang Chaofan,Chen Yanmin,Guo Hong,Jin Hongxiao,Ren Hanzhang,Lu Jianquan.MINING APPLICATION OF SEISMIC TOMOGRAPHY AND ITS GEOLOGICAL INTERPRETATION[J].Chinese Journal of Geology,1997,32(1):96-102. |
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| Authors: | Zhao Yonggui Wang Chaofan Chen Yanmin Guo Hong Jin Hongxiao Ren Hanzhang Lu Jianquan |
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| Institution: | 1. Institute of Geology, Chinese Academy of Sciences, Beijing 100029;2. Longsou Mine, Jinchuan Nonferrous Metal Corporation, Gansu 737102 |
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| Abstract: | Mining application of Seismic Tomography in Jinchuan Longshou Mine is the frist test in China. The prospecting test conducts in the depth of 500m underground and covers an area of 300m×300m. The seismic velocity which is selected as image variable is more sensitive to ore bearring rock. The equipment used is ES-2401X 48-channel Seismograph. The acquisition frequency bandwidth is selected from 400Hz to 4000Hz. The test area is divided into total 81×64 elements, with individual size of 4m×4m. The intervals both of receivers and shots are 4m. The prospecting resolution is 2.5m. The seismic waves are excited by dynamite source of 50g. Tolal 165 effective shots are available and 7619 seismic rays are calculated into velocity image. The seismic velocity image shows there is a high velocity zone of 5.0—6.5km/s in the middle west of the area. It is deduced to be high density intrusive rocks, such as bultrabasic intrusive rock, Ni-Cu ore bearring, and granite masses. This zone consists of. two parts, northern and southern. The northern part is confirmed by drilling as to be granite. The west of the southern part is verified as to be Ni-Cu ore bearring bultrabasic rock, the east of the southern part is discovered to be granite, too, during the gallery exploritation. And there is an E-W-trending low velocity belt which is interpreted as a fault. The late drilling shows the deduction correct. These facts show that the application of seismic tomography technique has a bright future in the mining aspect. |
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| Keywords: | Seismic tomography technique Velocity image Ore bearring rock Fault belt |
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