| 声波探测技术判别某水电站坝址区岩体缺陷 |
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| 引用本文： | 简文彬,简洪钰.声波探测技术判别某水电站坝址区岩体缺陷[J].地下空间与工程学报,2006,2(6):1053-1056,1062. |
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| 作者姓名： | 简文彬 简洪钰 |
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| 作者单位： | 福州大学岩土工程与工程地质研究所,福州,350002;福建工程学院土木工程系,福州,350000 |
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| 基金项目： | 国家自然科学基金;福建省自然科学基金 |
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| 摘 要： | 为掌握某水电站坝址区岩体节理裂隙、断层破碎带规模及其分布，选择了坝址区ZK1孔、ZK3孔、ZK7孔，采用声波探测技术进行钻孔岩体声波波速测试。结果表明：拟建坝址区岩体完整段波速高，节理裂隙发育地段以及断层带呈明显的低速突变；裂隙发育带、断层带岩体纵波波速Vpm一般小于2500m／s，弱风化岩体纵波波速Vpm一般在3100—4000m／s，微风化岩体纵波波速Vpm一般为5000—5800m／s。研究结果对分析判断岩体中存在的节理裂隙、断裂等缺陷，为解决坝址稳定及渗漏问题提供了重要的依据。
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| 关 键 词： | 岩体 波速 节理裂隙带 |
| 文章编号： | 1673-0836（2006）06-1053-04 |
| 收稿时间： | 2006-08-20 |
| 修稿时间： | 2006-08-20 |
Exploration of Rock Mass Disfigurement for a Hydropower Station Dam Site by Acoustic Wave Test |
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| JIAN Wen-bin,JIAN Hong-yu.Exploration of Rock Mass Disfigurement for a Hydropower Station Dam Site by Acoustic Wave Test[J].Chinese Journal of Underground Space and Engineering,2006,2(6):1053-1056,1062. |
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| Authors: | JIAN Wen-bin JIAN Hong-yu |
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| Affiliation: | 1. Institute of Geotechnical and Geological Engineering, Fuzhou University, Fuzhou 350002, China; 2. Department of Civil Engineering, Fujian University of Technology, Fuzhou 350000, China |
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| Abstract: | For exploration of rock mass fissure and fault zone of a hydropower station dam site, the acoustic wave velocity of rock mass were measured by acoustic wave testing technique in borehole ZK1, ZK3, and ZK7. Based on the testing results, the acoustic wave velocity Vpm of fissure zone or fault zone in the dam site is less than 2 500 m/ s commonly, the Vpm of moderately weathered rock mass between 3 100 -4 000 m/s, and the Vpm of readily slihgt weathered rock mass between 5 000 - 5 800 m/s. The fissure and fault zone in the rock mass can be explored by acoustic wave test, and it is useful for establishing the measures for dam rock reinforcement and anti - leakage. |
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| Keywords: | rock mass acoustic wave veloclty fissure zone |
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