期刊文献+

可控震源地震勘探在大坝检测中的应用试验 被引量:2

The applied test of vibroseis seismic prospecting system in dam
下载PDF
导出
摘要 某电厂大坝为黏土斜墙堆石坝,其黏土防渗层的状态(密实性、一致性等)是极其重要的问题.瞬态瑞利面波探测技术可用来检测堤坝松散层和土坝渗漏水异常区.可控震源激发波形精确可控,可激发高频地震波,以提高地震勘探分辨率,进行浅层薄层地震勘探.本文应用研制的可控震源地震勘探系统对大坝进行了实地测试,对测试数据进行了频散分析,衰减系数与能量分析,波速计算分析.分析结果表明,大坝局部区域存在低速点;研制的可控震源系统可有效地进行浅层地震信号勘探. There is a rockfill dam with clay facing in Guangdong, and its earth blanket's state such as compactness and uniformity is important. Transient Rayleigh wave can be used to inspect the loose layer and leakage anomaly region of the earth dam. The vibroseis source can arouse precise and controllable high frequency seismic wave so as to improve seismic solution for shallow seismic prospecting. Field test is carried out with vibroseis seismic prospecting system developed by our lab in Nanshui dam. Frequency dispersion, attenuation coefficient, energy and wave speed are analyzed as the testing data. It is indicated that the speed of some spots is low, and that the vibroseis system can do shallow seismic prospecting effectively.
出处 《水利水运工程学报》 CSCD 北大核心 2010年第1期56-61,共6页 Hydro-Science and Engineering
基金 铁道部-清华基金项目(T200409) 广东省粤电集团有限公司科技项目(K06NS001)
关键词 可控震源 地震勘探 大坝检测 信号处理 vibroseis seismic prospecting dam detection signal processing
  • 相关文献

参考文献8

二级参考文献35

  • 1底青云,Martyn Unsworth,王妙月.复杂介质有限元法2.5维可控源音频大地电磁法数值模拟[J].地球物理学报,2004,47(4):723-730. 被引量:85
  • 2林君 程德福.微型计算机卡式仪器原理、设计与应用[M].国防工业出版社,1996..
  • 3傅淑芳 刘宝诚.地震学原理[M].北京:地震出版社,1991..
  • 4杨成林.瑞利波勘探[M].北京:地质出版社,1985..
  • 5[1]Di Q Y, Wang M Y, Shi K F, et al. CSAMT research survey for preventing water-bursting disaster in mining. Proceedings of the 106th SEGJ Conference. Tokyo:The Society of Exploration Geophysicists of Japan. 2002
  • 6[2]Zonge K L, Ostrander A G, Emer D F. Controlled-source audio frequency magneto telluric measurements. In: Vozoff K ed., Magneto Telluric Methods. Soc. Expl. Geophys. Geophysics Reprint Series 5,1986, 749 ~ 763
  • 7[3]Basokur A T, Rasmussen T M, Kaya C, et al. Comparison of induced-polarization and controlled-source audio-magnctotellurics methods for massive chalcopyrite exploration in a volcanic area. Geophysics, 1997, 62(6): 1087 ~ 1096
  • 8[4]Sandberg S K, Hohmann G W. Controlled-source audio-magnetotellurics in geothermal exploration. Geophysics, 1982, 47(1): 100~ 116
  • 9[5]Batrel L C, Jacobson R D. Results of a controlled-source audio frequency magneto telluric survey at the Puhimau thermal area, Kilauea Volcano, Hawaii, Geophysics, 1987, 52(4): 665 ~ 677
  • 10[6]Wannamaker P E. Tensor CSAMT survey over the sulphur springs thermal area, Valles Caldera, New Mexico, U.S.A., Part Ⅰ: Implications for structure of the western caldcra. Geophysics, 1997a, 62(4): 451 ~ 465

共引文献115

同被引文献9

引证文献2

二级引证文献10

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部