摘要
我国是泥石流灾害高发国家,严重的泥石流灾害威胁着人民的生命财产安全。多数泥石流为几年至几十年暴发一次的中、低频泥石流,目前建立的泥石流监测点,成本及运行费用高,覆盖面窄,广大山区基层工作人员需要简便可靠的设备以判断泥石流是否发生。为此通过分析泥石流次声波特征,设计了基于次声波的便携式泥石流报警器。报警器通过低通滤波器及精密整流直流放大器完成次声波检测,采用存续时间检测方式确认次声波是否为泥石流发生,确认后声光同时报警。结合当地、当时的地质和气象状况,报警器能为泥石流灾情提供宝贵的预警时间。
China is a country with a high incidence of mudslides.Serious debris flow disasters threaten the safety of people’s lives and property.Most debris flow usually occur at medium or low frequency only once a few years to several decades.The debris flow monitoring stations build at present are expensive and their high cost and operation cost with narrow coverage.A simple and reliable equipment is needed for the grassroots workers in vast mountainous areas,to determine whether mudslides occur.Therefore,by analyzing the infrasonic characteristics of debris flow,a portable mudslide alarm based on infrasonic waves is designed.The alarm implements the infrasound detection through a low-pass filter and a precision rectifying DC amplifier.Existing and continuous time detection is used to confirm whether the infrasonic wave is generated by the debris flow.Sound-light alarm will be given once it is confirmed.Combining the local and current geological and meteorological conditions,alarms can provide precious warning time for debris flows disaster.
作者
钟政
杨军
徐佳宝
ZHONG Zheng;YANG Jun;XU Jiabao(Academic Affairs Office,Sichuan University of Science&Engineering,Zigong 643000,China;School of Automation and Information Engineering,Sichuan University of Science&Engineering,Zigong 643000,China)
出处
《四川轻化工大学学报（自然科学版）》
CAS
2021年第4期74-80,共7页
Journal of Sichuan University of Science & Engineering(Natural Science Edition)
基金
高校实践教学体系改革研究项目(JG-19-77)
四川轻化工大学大学生创新创业训练计划项目(cx2019261)。
关键词
泥石流
次声波检测
存续时间
声光报警
debris flow
infrasonic wave detection
existing and continuous time
sound and light alarm
