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| 用微型地下室坑式摆墩方式解决BBVS-60宽频带地震计零漂问题 | |
| 引用本文： | 王登伟,张艺,戴仕贵,邵玉平.用微型地下室坑式摆墩方式解决BBVS-60宽频带地震计零漂问题[J].四川地震,2009(1). |
| 作者姓名： | 王登伟 张艺 戴仕贵 邵玉平 |
| 作者单位： | 1. 四川省地震局,西昌地震中心站,四川,西昌,610052 2. 四川省地震局地震监测研究所,四川,成都,610041 3. 四川省地震局,水库地震研究所,四川,成都,610041 |
| 摘 要： | 分析了在四川省西昌数字测震台网"十五"项目中安装BBVS-60和CMG-3ESPC三分向宽频带地震计记录时遇到的零漂问题。通过实例证明了在一体化的地表观测房中,通过修建微型地下室构筑坑式摆墩的方法,能够有效解决由于环境变化产生的宽频带地震计记录时遇到的零漂问题,确保宽频带地震计正常记录工作。优点有:(1)满足了宽频带地震计对观测环境条件的要求;(2)大幅度降低了工程造价;(3)便于地震计维护;(4)有效地降低了地表噪声水平。 |
| 关 键 词： | 宽频带地震计 零漂 微型地下室 摆墩 开环周期 |
Setting an instrument frustum in a semi-subterranean hole to reduce environmental affecting |
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| WANG Deng-wei,ZHANG Yi,DAI Shi-gui,SHAO Yu-ping.Setting an instrument frustum in a semi-subterranean hole to reduce environmental affecting[J].Earthquake Research in Sichuan,2009(1). | |
| Authors: | WANG Deng-wei ZHANG Yi DAI Shi-gui SHAO Yu-ping |
| Institution: | 1.Seismic Center Station of Xichang;Earthquake Administration of Sichuan Province;Sichuan Xichang 615022;2.Earthquake Administration of Sichuan Province;Sichuan Chendu 610041;China |
| Abstract: | In order to reduce the zero shifts of digital seismographs,which are BBVS-60 and CMG-3ESPC,due to environmental affecting,we dig a deep chuckhole,in which an instrument frustum is constructed,in an observation house.We put the broadband digital seismometers on the instrument frustum.We then made a comparative test and got a satisfy result.Our test result indicate that installing BBVS-60 and CMG-3ESPC wide frequency range seismometer on the instrument frustum can effectively reduce the ground noise,ensured t... |
| Keywords: | broadband seismograph zero shift semi-subterranean hole |
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