| 互相关函数在单孔法剪切波速测量中的应用 |
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| 引用本文： | 侯兴民,薄景山,杨学山,刘德东.互相关函数在单孔法剪切波速测量中的应用[J].地震工程与工程振动,2004,24(2):59-63. |
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| 作者姓名： | 侯兴民 薄景山 杨学山 刘德东 |
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| 作者单位： | 中国地震局工程力学研究所,黑龙江,哈尔滨,150080;哈尔滨工业大学,黑龙江,哈尔滨,150090;中国地震局工程力学研究所,黑龙江,哈尔滨,150080 |
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| 基金项目： | 地震科学联合基金项目(602009),中国地震局"十五"重点科研项目 |
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| 摘 要： | 本文系统论述了单孔法剪切波速测量信号处理中的一种到时差识别方法。对带通滤波后的触发传感器信号和探头信号进行互相关分析,可以准确地识别S波的到时。针对实际波速测试工作中两道水平信号到时差相差比较大、测点的波速计算值为负数或者计算波速数值远大于或小于现场岩样的经验实际数据等不合理因素,编制了相应的计算程序．提高了波速分析的效率和精度。
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| 关 键 词： | 单孔法 剪切波速 信号处理 带通滤波 互相关函数 |
| 文章编号： | 1000-1301(2004)02-0059-05 |
Applications of correlation function in shear-velocity measurement of single-hole method |
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| HOU Xing-min.Applications of correlation function in shear-velocity measurement of single-hole method[J].Earthquake Engineering and Engineering Vibration,2004,24(2):59-63. |
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| Authors: | HOU Xing-min |
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| Institution: | HOU Xing-min~ |
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| Abstract: | An S-wave arrival time detection method for wave velocity measurement in single-hole method is presented in this paper. The arrival time is accurately determined by calculating the signals' correlation function between the bursting sensor and the reception sensors. Corresponding program is written, which overcomes the unreason-ableness of large arrival time difference between the two horizontal reception sensors, negative velocity values and unreasonable velocity between the calculated values and the experimental values of the practical soil samplings. The method improves the wave velocity analyzing efficiency and accuracy. |
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| Keywords: | single hole method shear velocity signal processing band-pass filter correlation function |
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