摘要
现有的高速公路边坡监测技术,主要面临的难点是电类技术抗干扰、取电、信号传输、维护。文中利用分布式光纤传感技术,以SNS柔性防护网为光缆载体,实现了现场无需供电、集传感与传输于一体的长距离监测。通过对应力和振动监测数据的采集分析,提供准确的告警信息,定位精度可达±20 m。该技术有效克服了现有边坡监测技术的不足,并且将主动预警和被动报警相结合,可及时发现高速公路边坡危岩落石灾害事件。
The main difficulty of the existing expressway slope monitoring technology is the difficulty in anti-interference, power generation, signal transmission and maintenance. By making use of distributed optical fiber sensing technology and using SNS flexible protective network as optical cable carrier, long-distance monitoring without power supply and integrating sensing and transmission can be realized. Through the collection and analysis of stress and vibration monitoring data, the accurate warning information is provided, and the positioning accuracy can reach 20m. It overcomes the deficiency of the existing slope monitoring technology, and combines the active warning and passive alarm to discover the dangerous rock falling rock disaster event on the highway slope in time.
作者
姚明远
张浩霖
YAO Mingyuan;ZHANG Haolin(Wuhan WUTOS Co., Ltd., Wuhan 430000, China)
出处
《交通科技》
2019年第5期34-36,共3页
Transportation Science & Technology
关键词
高速公路
边坡监测
分布式光纤传感
SNS柔性防护网
highway
slope monitoring
distributed optical fiber sensing
SNS flexible protective net
