| 由微振动记录用剥层法研究浅层S波速度结构 |
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| 引用本文： | 何海兵,李清河,范小平.由微振动记录用剥层法研究浅层S波速度结构[J].地震学刊,2010(1):103-108. |
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| 作者姓名： | 何海兵 李清河 范小平 |
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| 作者单位： | [1]中国地震局兰州地震研究所,兰州730000 [2]江苏省地震局,南京210014 [3]镇江市地震局,江苏镇江212001 |
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| 基金项目： | 江苏省社会发展计划项目（BS2006084）资助 |
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| 摘 要： | 根据江苏华电句容发电一期2×1000 MW发电机组场地情况,布设了三角形嵌套和同心圆台阵进行微振动观测,采用空间自相关法计算频散曲线,并用剥层法反演得到该工程场地浅部的S波速度结构。反演结果与钻孔探测结果吻合较好,表明用微振动台阵记录反演浅部地壳S波速度结构在工程上是可行的。该方法具有不需要人工源,对避开噪声要求不苛刻、成本低且精度可满足工程要求等优点,故有良好的应用前景。
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| 关 键 词： | 微振动台阵 浅层S波速度结构 空间自相关法 剥层法 |
Research on S-Wave Velocity Structure of Shallow Stratum with Stripping Method from Array Records of Microtremors |
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| HE Hai-bing,LI Qing-he,FAN Xiao-ping.Research on S-Wave Velocity Structure of Shallow Stratum with Stripping Method from Array Records of Microtremors[J].Journal of Seismology,2010(1):103-108. |
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| Authors: | HE Hai-bing LI Qing-he FAN Xiao-ping |
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| Institution: | 1.Lanzhou Institute of Seismology,China Earthquake Administration,Lanzhou 730000,China;2.Earthquake Administration of Jiangsu Province,Nanjing 210014,China;3.Earthquake Administration of Zhenjiang,Zhenjiang 212001, China) |
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| Abstract: | On the site conditions of the first period of 2×1000 MW electric generating set of China Huaneng Electric Power at Jurong,Jiangsu province,we designed triangular and concentrically circular arrays for the observation of microtremors;the phase velocities of surface wave were determined by the spatial autocorrelation method（SPAC）,and the S-wave velocity structure of shallow stratum was identified with the stripping method.The consistent result of the inversion with bore-hole shows that this method has following advantages： no requirement of artificial sources,no avoidance of noise pollution,cheap cost of the exploration,and satisfactory precision for engineering;so it has prospective application. |
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| Keywords: | microtremors observation arrays S-wave velocity structure of shallow stratum spatial autocorrelation method stripping method |
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