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乐山防汛有了“千里眼”</b><br/><br/><b></b><br/><br/><br/><br/><br/> 2025年10月27日18:21 | 来源：川观新闻</a><br/><br/><i>小字号</i><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/>原标题：水利测雨雷达上新 乐山防汛有了“千里眼”<br/><br/>“14点57分，峨边金岩乡金岩村预计未来三小时降雨量为4.95mm。”9月1日，在乐山市峨边彝族自治县联合指挥调度中心内，峨边水务局水旱灾害防御股工作人员杨诚通过电脑，实时接收到了新安装的水利测雨雷达传回的数据。<br/><br/>这台矗立山间的 “智慧监测哨”，安装在海拔高度2093米的杨河乡窑坪岗上，监测范围可覆盖峨边90%以上的面积，为当地防汛决策筑牢 “数据防线”。<br/><br/><br/><br/>水利测雨雷达<br/><br/>“以前靠地面雨量站和人工观测，山里站点稀，等发现雨大了，消息传下来都慢半拍。” 峨边彝族自治县水务局党组书记屈晓波指着屏幕上的降雨分布图感慨，水利测雨雷达安装后，时间分辨率大幅提升，雨情预判能精准到乡镇。<br/><br/>乐山市呈“七山二丘一平”地貌特征，境内水系发达，水库众多，江河密集，是山洪易发、高发区域之一，山洪灾害点多、面广，监测预警和防御难度非常大。但传统监测受地理限制，常面临 “看得见的地方测不了，测得到的地方覆盖不全” 的难题，无法满足实时预警需求。<br/><br/>水利测雨雷达作为一种主动探测设备，通过发射电磁波并接收从雨滴、冰晶等降水粒子反射回来的信号，实时获取降水的空间分布、强度、运动方向和速度等信息。相比传统测雨方式，水利测雨雷达有着空间覆盖广、时间分辨率高、探测精度高等显著优势。<br/><br/>此次使用的水利测雨雷达，通过垂直扫描、剖面扫描、体积扫描等多种扫描方式，可以在40秒内完成对近地面层大气中液态水的探测，探测距离可达45km，探测垂直高度0～2km。若遇强降雨，可提前1至3个小时预警。<br/><br/>“峨边、金口河的水利测雨雷达安装完后并投入试运行。”乐山市水务局相关工作人员介绍，同时，峨眉山市、沐川县、马边彝族自治县也在同步建设当中，预计九月底建成。五座雷达站协同工作后，将覆盖乐山全市70%以上的面积。雷达获取的数据将同步上传至省级水文中心，全面支撑指挥调度与科学防汛。<br/><br/>乐山观察 牛萍<br/><br/><br/><br/><table columns="2" align="LCL"><tr></tr></table><br/><br/><br/><br/>(责编：袁菡苓、高红霞)<br/><br/><i>分享让更多人看到 <i></i></i><br/><br/><br/><br/><b>客户端下载</b><br/><br/>人民日报</a><br/><br/>人民网+</a><br/><br/>手机人民网</a><br/><br/>领导留言板</a><br/><br/>人民视频</a><br/><br/>人民智作</a><br/><br/><br/><br/><br/><br/><br/><br/><b>热门排行</b><br/><b></b><br/>1四川5名干部任新职</a><br/><br/>2九寨沟景区游客接待量创40年历史新高，…</a><br/><br/>3四川2市（州）政府发布人事任免</a><br/><br/>4四川3市（州）发布干部任前公示</a><br/><br/>5朱福全：938.2高地的矗立者</a><br/><br/>6成都市2026年度城乡居民医保启动集中…</a><br/><br/>7四川省纪委监委：1人被查 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