| 摘要 |
PROBLEM TO BE SOLVED: To provide a groundwater flow measurement apparatus for drastically improving a range of a measurable flow speed so as to simultaneously measure a high speed as a high groundwater flow speed by a measurement element for coping with a low flow speed area and has a long float sensor even if the groundwater flow measurement apparatus can sensitively obtain a reaction in the low flow speed area. SOLUTION: The groundwater flow measurement apparatus images the swing state of an object to be measured in groundwater by an imaging means, and continuously measures the flow speed and the flow direction of the ground water from an image of the object to be measured for a long time. An apparatus body includes the imaging means accommodated in the upper section and a measurement section provided in the lower section to make the groundwater pass through. The swingable measurement element is vertically provided, and extended from the bottom of the measurement section. A reference point for measuring the low flow speed of the groundwater is formed at the top of the measurement section. Reference points for measuring the high flow speed of the groundwater are formed between the base and the top of the measurement element at an interval. A plurality of the reference points are considered as the objects to be measured. COPYRIGHT: (C)2010,JPO&INPIT |
