| Results of Underground
Temperature Surveys: Detecting the Groundwater Vein-Stream at the Barikan Landslide Area
in IranGen Furuya, Atsuo
Taleuchi, Zieaodin Shoaei, Jafar Ghayoumian Disaster Prevention Research Institute Kyoto University, Uji, Kyoto, Japan E-mail: furuya@landslide.dpri.kyoto-u.ac.jp
Abstract It is knows that underground water does not form a groundwater surface but forms a groundwatervein-stream at the head scarp after the occurrence of landslide. Generally, landslides are caused by the influence of underground water (pore pressure on the sliding surface) in the mass. Therefore as a countermeasure to landslides it is necessary to drain the groundwater. When the groundwater temperature is measured at the spring-water points and bore holes in the landslide area, we see that the annual variation of temperature is comparatively stable. On the other hand, we see that the annual variation is not stable near/on the ground surface. Based on these phenomena, Takeuchi (1980, 1981) has developed a method of investigating groundwater vein-streams by measuring the temperature at a one-meter depth. This method provides the basic information for countermeasurey for drainage oc underground water at landslide areay in Japan (e.g., Takeuchi, 1981). The purpose of this paper is to detect the Plain distribution of the groundwater vein-stream at the Barikan landslide in Iran with the help of the underground temperature survey and to examine if this vein-stream can be a useful water resource. |
