影响地震预警能力的关键技术指标是预警时间及预警盲区。通过分析山西地震台网勘选完成的1 101个预警台站布局，计算地震台站平均台间距，根据预警盲区半径与台间距关系式得出盲区半径。根据计算结果及相关分布图，分析认为，在预警区内，平均台间距及盲区半径分布与地震活动的相关性较高，勘选完成的地震预警台站布局比较合理。
This paper discussed the key technical indicators of the earthquake early warning capacity:warning times and the blind zone. Based on the distribution of 1 101 warning stations which have been surveyed, we calculated the average interstation distance. According to the relationship between blind-zone radius and interstation distance, we calculated the blind-zone radius. Overall, on the basis of the calculation results and correlated distribution maps, both of average interstation distance and blind-zone radius have high correlation with seismic activity in the early warning zone, so the distribution of 1 101 warning stations of Shanxi seismic network is reasonable.
2017,38(4): 65-69 收稿日期：2016-09-28
DOI：10.3969/j.issn.1003-3246.2017.04.011
基金项目：2016年度中国地震局地震监测、预报、科研三结合课题（项目编号：160403）；2016年度山西省地震局科研合同制项目（项目编号：SBK-1631）
作者简介：梁艳(1985-),女,山西晋城人,硕士,工程师,主要从事测震台网台站运行维护工作。E-mail:1326571878@qq.com
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