FDR型岩土多层含水量监测仪的研究  

Research on FDR-type multilayer water content monitor

作　　者：周策[1] 罗光强[1] 吴陶[1] ZHOU Ce;LUO Guangqiang;WU Tao(Institute of Exploration Technology, CAGS, Chengdu Sichuan 610031, China)

机构地区：[1]中国地质科学院探矿工艺研究所,四川成都610031

出　　处：《探矿工程（岩土钻掘工程）》2020年第6期60-66,共7页Exploration Engineering:Rock & Soil Drilling and Tunneling

基　　金：中国地质调查局地质调查项目“怒江流域泸水-芒市段灾害地质调查”(编号:DD20190643)。

摘　　要：岩土层含水量的变化是诱发滑坡、泥石流地质灾害最为重要的因素之一,以往采用的张力计法、电阻法、中子法、电容式、γ-射线法、光学测量法和TDR法等测量原理,分别存在精度不高、对人体危害大或受天气影响大和电子线路造价昂贵等缺点。而FDR型滑坡体岩土层多层含水量自动监测仪采用电磁波频域反射(简称FDR)管式含水量传感器进行监测,通过含水量无线通讯采集监测仪进行远程数据采集并无线传输。滑坡体岩土层多层含水量自动监测仪具有体积小、测程大、响应速度快、灵敏度高、精度高、耐腐蚀和抗潮等特点,推动了地质灾害预警监测技术的进步。The change of water content in rock and soil layers is one of the most important factors inducing geological hazards of landslides and debris flows.In the past,the measuring principles,such as the tensiometer method,resistance method,neutron method,capacitance method,gammaray method,optical measurement method,TDR method,have been used to measure water content in rock and soil layers.Those methods have some disadvantages such as low accuracy,great personal harm,great influence by weather,expensive electronic parts.The FDR-type automatic monitoring instrument for multi-layer water content in rock and soil layers of the landslide body uses the electromagnetic frequency domain reflection(FDR)tubular water content sensor for measurement,and carries out remote water content data acquisition and wireless transmission with the wireless communication acquisition and monitoring instrument.The automatic multi-layer water content monitoring instrument for landslide rock and soil layers has the characteristics of compactness,large measurement range,quick response,high sensitivity,high precision,corrosion and moisture resistance,which has promoted the progress on early warning and monitoring technology for geological hazards.

关 键 词：含水率 管式含水量传感器 频域反射(FDR) 无线传输 

分 类 号：P634[天文地球—地质矿产勘探]