基于地震预警的台阵布局优化  

Optimization Research on Seismic Array Layout Based on Earthquake Early Warning System

作　　者：张延年[1] 刘丽[1] 刘明[1] 聂淼鑫[2] 魏超[2] 

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168 [2]浙江工贸职业技术学院,浙江温州325003

出　　处：《沈阳建筑大学学报（自然科学版）》2009年第1期1-5,共5页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金项目(50508008);建设部研究开发项目(2008-k3-7);沈阳建筑大学省级重点实验室开放基金项目(JG200702);沈阳市建委项目(2007sjw-07);博士后科学基金项目(20060400971)

摘　　要：目的为降低地震台阵成本,同时满足地震预警系统的有效预警时间要求,合理布置地震台阵.方法基于双台子台阵地震定位方法,通过合理设置优化设计变量、目标函数和约束条件,建立地震台阵布局优化设计模型,并采用IHGA对台阵布局进行优化设计.结果对沈阳市地震预警系统台阵布局进行优化设计,建立了相应的台阵布局优化设计模型,使不同发震点发震时对任一预警对象的有效预警时间均能满足地震预警系统最低设防要求,平均有效预警时间得到大幅增加.结论建立的地震预警系统的台阵布局优化设计模型与所采用的优化设计方法可以达到要求,并取得了较好的效果.The paper aims to reduce seismic array cost and at the same time to meet the demands of effective early warning time of the earthquake early warning system. Based on earthquake allocation method with a two station sub-array, the optimization design model of seismic array layout was established through determine optimization design variables, objective function and constraint condition reasonably. The seismic array layout of the earthquake early warning system of Shenyang city is optimized with IHGA. The results of examples show that the average effective early warning time is significantly increased. Moreover, the effective early warning time of any early warning object can meet the lowest resistant requirements of earthquake early warning system when the earthquake happened in different locations. Therefore, the optimization design mod- el of seismic array layout of the earthquake early warning system and the method of optimization design can obtain better effects.

关 键 词：地震预警 地震台阵 优化布局 遗传算法 

分 类 号：P315[天文地球—地震学]