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오진원 ( Oh Jin-won ),임홍철 ( Rhim Hong-chul ),김종우 ( Kim Jong-woo ),한병원 ( Han Byung-won ),조윤범 ( Cho Yoon-bum ) 한국구조물진단유지관리공학회 2008 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.12 No.2
Materials including soil have dielectric properties, which represent the characteristics of the material in response to incoming electromagnetic waves. This information can be useful in determining the moisture content of soil for the purpose of predicting possible landslide. To develop a database for the dielectric properties of soil, a network analyzer has been used for laboratory measurements. To simulate field measurements, a soil tank has been made and the properties are measured using a ground penetrating radar (GPR). Results showed that GPR measurements are compatible with network analyzer values so that the GPR can be effectively used for the moisture level measurements in the field as a part of landslide prediction system.
오진원 ( Oh Jin-won ),임홍철 ( Rhim Hong-chul ),김종우 ( Kim Jong-woo ),한병원 ( Han Byung-won ),조윤범 ( Cho Yoon-bum ) 한국구조물진단유지관리공학회 2008 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.12 No.1
Abrupt landslide might cause the loss of properties, casualties, and the block of traffic on the road especially during rainy season in Korea. In this paper, a method using Ground Penetrating Radar (GPR) is proposed for the purpose of sending an early warning prior to a possible landslide. The GPR system measures the change of moisture content in the soil until it reaches a threshold of initiating the failure. A metal target is used as a reflector while the soil sample is moisturized at different levels of moisture content. Then, the dielectric constant of the soil is obtained based on the time of returned signal from the reflector. The results showed that this method is possible in predicting the change of moisture content within the soil sample and for the application to the landslide warning system.