Application of Micro-Flow Meter for Investigation of Groundwater Flow in Landslides

Abstract

Generally speaking, the groundwater flow in landslides is a complex phenomenon to understand. In order to get some insights on this subject, the gloundwater logging is wildly and effectively used.
The author has been attempted measuring the flow velocity in up/down direction within a borehole by use of the micro-flow meter for many years. In particular, at two active landslides the measurements of flow velocity were carried out using the micro-flow meter last years. The results show that a considerable variation in the flow velocity can be clearly observed by the micro-flow meter. Thus, the in situ permeability and pore pressure for each zone along the borehole can be determined. On the basis of hydraulic information obtained from the measurements, the characteristics of groundwater flow in the two landslides can be understood well.
In conclusion, the micro-flow meter is a powerful instrument for investigation of groundwater flow in landslides.