| 反射波初至时刻判断中的信号对比法 |
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| 引用本文： | 许年春,石东虹,张秋.反射波初至时刻判断中的信号对比法[J].重庆交通学院学报,2007,26(6):123-126. |
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| 作者姓名： | 许年春 石东虹 张秋 |
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| 作者单位： | 重庆大学土木工程学院 重庆400045(许年春)，重庆市勘测院 重庆400020(石东虹，张秋) |
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| 基金项目： | 教育部重点科技项目(03113) |
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| 摘 要： | 在地表波动测试中,若不考虑上部岩层不均匀性,与发射点距离相等的测点上测得的振动信号理应吻合,而当某测点最先有节理面反射纵波传播至时,其振动信号就与其它测点振动信号发生偏离,故可通过信号对比判断出该测点处节理反射波初至时刻,该方法应用于实测信号,判断出的节理反射波初至时刻误差<1%.
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| 关 键 词： | 信号对比 反射波 初至时刻 节理产状 应力波反演 |
| 文章编号： | 1674-0696（2007）06-0123-04 |
| 收稿时间： | 2007-03-08 |
| 修稿时间： | 2007-06-11 |
Method of Signal Comparison Used to Judge Arriving Time for Reflected Wave |
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| XU Nian-chun, SHI Dong-hong, ZHANG Qiu.Method of Signal Comparison Used to Judge Arriving Time for Reflected Wave[J].Journal of Chongqing Jiaotong University,2007,26(6):123-126. |
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| Authors: | XU Nian-chun SHI Dong-hong ZHANG Qiu |
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| Abstract: | If the upper rock is considered homogeneity,the vibration signals tested on equal-offset spots is theoretically same in ground wave test.When the wave reflected by the joint reaches one spot firstly,the vibration signal on this spot will depart from others.So we can judge the initial arriving moment for reflected wave through signal comparison.This method was used to signals tested in one experiment indoors,and the initial arriving moment was close to the theoretic value. |
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| Keywords: | signal comparison reflected wave initial arriving moment joint attitude stress wave inverse |
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