地震地质 ›› 2010, Vol. 32 ›› Issue (3): 434-441.DOI: 10.3969/j.issn.0253-4967.2010.03.010

• 地震电磁监测 • 上一篇    下一篇

高压直流输电对地电场观测的影响

方炜1,2, 张国强2, 邵辉成2   

  1. 1. 长安大学地质工程与测绘工程学院, 西安, 710054;
    2. 陕西省地震局, 西安, 710068
  • 收稿日期:2010-04-18 修回日期:2010-07-06 出版日期:2010-09-30 发布日期:2011-01-14
  • 作者简介:方炜,男,1977年生,1999年毕业于安徽大学应用物理专业,2002年在中国地震局兰州地震研究所获得固体地球物理专业硕士学位,工程师,主要从事地震电磁学及相关研究,电话:029-88465330,E-mail:xa2008@gmail.com.
  • 基金资助:
    中国地震局震情跟踪项目(2010020901);陕西省地震局青年基金(200903)共同资助

STUDY ON THE IMPACT OF HVDC TO GEOELECTRIC FIELD OBSERVATION

FANG Wei1,2, ZHANG Guo-qiang2, SHAO Hui-cheng2   

  1. 1. College of Geology Engineering and Geomatics, Chang'an University, Xi'an 710054, China;
    2. Earthquake Administration of Shaanxi Province, Xi'an 710068, China
  • Received:2010-04-18 Revised:2010-07-06 Online:2010-09-30 Published:2011-01-14

摘要: 高压直流输电是解决长距离输送电的一种重要手段,近年来,随着中国高压直流输电骨架网的建设,在地震地电场观测中出现了一种新的干扰异常。以关中地区宝鸡、乾陵和周至地电场观测受宝鸡-德阳±500kV直流输电工程影响为例,分析了此类干扰异常的变化形态和特征,并结合高压直流输电的基本原理,对异常的形成机理进行了探讨,定量的计算了不同距离、影响区电导率和高压直流输电入地电流等对地电场观测的可能影响。结果表明,在理想状态下,电导率γ取0.01时理论值与实际观测值基本相符。

关键词: 高压直流输电, 地电场观测, 干扰异常, 形成机理

Abstract: HVDC is an important way to solve the electricity transmission over long distances.With the construction of the skeleton of HVDC network in recent years,a new interference anomaly in seismic geoelectric field observation is emerging in China.In this paper,we take Baoji,Qianling and Zhouzhi geoelctric field observations in Central Shaanxi as an example to analyze the changes in shape and characteristics of such anomalies interfered by the Baoji-Deyang ? 500kV DC transmission project,discuss their forming mechanism combined with the basic principles of HVDC,and calculate their possible effects to electric field observations with different distances,conductivities and current into the earth.The results show that,the theoretical and observed geoelectric field values match well when conductivity is 0.01.

Key words: HVDC, geoelectric field observation, interference anomaly, formation mechanism

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