中国铁道科学2018，Vol.39Issue(1)：138-144,7.DOI:10.3969/j.issn.1001-4632.2018.01.19
基于地震P波双参数阈值的高速铁路Ⅰ级地震警报预测方法
Prediction Method of First-Level Earthquake Warning for High Speed Railway Based on Two-Parameter Threshold of Seismic P-Wave
摘要
Abstract
In order to improve the timeliness of earthquake emergency response for high speed railway and meet the requirements for effectiveness,the prediction method of first-level earthquake warning for high speed railway was studied using the thresholds of the predominant period τc and the peak amplitude of vertical displacement Pd from P-wave arrivals.The linear relationships were derived between τc and earthquake magnitude M and between Pd and the earthquake acceleration PGA from the time windows of 1 s,2 s and 3 s after P-wave arrivals using Japanese K-net strong ground motion data.The method called "four levels prediction method" of the first-level earthquake warning for high speed railway was proposed by using the threshold of τc corresponding to M=6 and the threshold of Pd corresponding to PGA=40 cm · s-2 at 3 time windows of P-wave based on these two statistical relationships mentioned above.Level 3 is defined as the prediction standard for the first-level earthquake warning of high speed railway.The effectiveness and timeliness of the "four levels prediction method" were analyzed using the strong ground motion data recorded by the K-net stations along the Kyushu Shinkansen in Kumamoto earthquake (Mj =6.5) on April 14,2016.Results show that the method can accurately predict first-level earthquake warning after the first 1 s P-wave arrival in the station KMM006 which is closest to the source of the earthquake.Meanwhile,this alert time is 3.34 s and 4.84 s earlier than the Kyushu Shinkansen derailment time and the Japan Meteorological Agency (JMA) Earthquake Early Warning (EEW) issued time,respectively.The proposed method can meet the needs for the development of earthquake monitoring and early warning system for high speed railway.关键词
地震P波/高速铁路/地震警报/卓越周期/最大竖向位移Key words
Seismic P-wave/High speed railway/Earthquake warning/Predominant period/Maximum vertical displacement分类
天文与地球科学引用本文复制引用
宋晋东,教聪聪,李山有,侯宝瑞..基于地震P波双参数阈值的高速铁路Ⅰ级地震警报预测方法[J].中国铁道科学,2018,39(1):138-144,7.基金项目
国家自然科学基金青年科学基金资助项目(51408564) （51408564）
国家自然科学基金高铁联合基金资助项目(U1534202) （U1534202）
国家重点开发计划项目(2017YFC1500802) （2017YFC1500802）
中国地震局工程力学研究所基本科研业务费专项资助项目(2016A03) （2016A03）
中国地震局创新团队发展计划 （）
