谱估计方法在大型实验装置地基振动测量中的应用

王敏超; 李欣; 翁秀峰; 张晓鹏; 肖卫国; 沈旭峰; 崔甲甲

doi:10.11889/j.0253-3219.2016.hjs.39.030503

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谱估计方法在大型实验装置地基振动测量中的应用

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- 谱估计方法在大型实验装置地基振动测量中的应用
- Application of ground vibration measurement in large experimental facilities based on spectrum estimation methods
- 核技术 2016年39卷第3期文章编号：030503
- 作者机构：
  
  西北核技术研究所西安 710024
  Northwest Institute of Nuclear Technology, Xi'an 710024, China
- 作者简介：
  
  王敏超,男,1981年出生,2013年于西安电子科技大学获硕士学位,目前从事地震信号测量技术研究
- 基金信息：
  
  国家自然科学基金(No.11375145、No.41474035)资助()
- DOI：10.11889/j.0253-3219.2016.hjs.39.030503
  中图分类号： TL505;TU47
- 收稿日期：2015-08-19，
  
  录用日期：2015-11-04，
  
  纸质出版日期：2016-03-25
- 稿件说明：
移动端阅览
王敏超, 李欣, 翁秀峰, 等. 谱估计方法在大型实验装置地基振动测量中的应用[J]. 核技术, 2016,39(3):030503

Minchao WANG, Xin LI, Xiufeng WENG, et al. Application of ground vibration measurement in large experimental facilities based on spectrum estimation methods[J]. Nuclear techniques, 2016, 39(3): 030503
王敏超, 李欣, 翁秀峰, 等. 谱估计方法在大型实验装置地基振动测量中的应用[J]. 核技术, 2016,39(3):030503 DOI： 10.11889/j.0253-3219.2016.hjs.39.030503.

Minchao WANG, Xin LI, Xiufeng WENG, et al. Application of ground vibration measurement in large experimental facilities based on spectrum estimation methods[J]. Nuclear techniques, 2016, 39(3): 030503 DOI： 10.11889/j.0253-3219.2016.hjs.39.030503.

摘要

大型物理实验装置为获得高品质的强流脉冲电子束流

通常对地基振动都有较高的要求。详尽的地质振动状况分析是装置选址的重要前提。本文针对某装置待勘区域实际地质条件和周围人文环境

首先简要介绍了测点布设、振动测试系统的基本组成

然后通过分阶段测试比对试验对某装置待勘区域进行实际振动测量

最后应用谱分析的方法对区域内不同时间段、不同方向的测量数据进行分析

评估选址位置是否合理。数据结果表明

待勘区域在5μm

#183;s

-1

以上速度被95%概率检测

垂直方向位移振幅谱在185 nm

水平方向大于垂直方向约60 nm

物理实验表明

进一步基建过程中应采取适当的减震措施降低垂直位移幅度。

Abstract

Background:

In order to obtain high quality pulsed electron beam for large physical experimental facilities

it usually has higher requirement of the vibration of the foundation. Detailed geological vibration analysis is an important premise for the location of the experimental facilities.

Purpose:

Spectrum estimation method was applied to evaluate whether the location is reasonable through the actual vibration measurement for exploration area of different positions

different time-windows and different components.

Methods:

Firstly

the theories of traditional spectrum estimation were introduced. Then vibrations at different exploration positions

different time-windows

frequency bands and directions were analyzed according to the above methods

and amplitude spectrum and power spectrum of exploration area were given.

Results & Conclusion:

The data show that amplitude spectrum displacement of vertical component is 185 nm for exploration area which is 60 nm smaller than plane component

and give probability distribution of above result

providing the necessary basis for the mitigation measures to be taken in the process of further construction.

关键词

Keywords

references

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