Title:
TRACTIONAL DRIFTING SAND FLOW MEASURING INSTRUMENT WITH GUIDE TOOL FOR SAND COLLECTION
Document Type and Number:
Japanese Patent JPS63198825
Kind Code:
A
Abstract:
PURPOSE:To accurately measure a tractional drifting sand flow rate even in an area where the activity of drifting sand is active by fixing a guide tool for sand collection to a sand collecting box opening part. CONSTITUTION:Slanting plates 1 and 2 as guide tools for sand collection are fixed to a canopy 12 at the upper ends of the partition walls of two sand collec tion boxes 3 and 4 to constitute a sea bottom sand drifting flow rate measuring instrument. When a sand drift 6 is generated by bottom surface wave motion 5, the wave motion is stopped by the front surface of the slanting plate 1 and the pressure rises; and then the sand drift 6 begins to sink in front of the slanting plate 1 and flows in the sand collection box 3. At this time, the sand drift which flows in and passes through an adjacent sand collection box 4 is little and high-accuracy measuring operation is performed. Consequently, the accurate measurement is performed even in the area from the outside shore to the inside shore where the activity of the sand drift is active.
Inventors:
YOSHIDA SHIGERU
Application Number:
JP3169787A
Publication Date:
August 17, 1988
Filing Date:
February 14, 1987
Export Citation:
Assignee:
YOSHIDA SHIGERU
International Classes:
E02B3/00; G01F1/00; (IPC1-7): E02B3/00; G01F1/00
Previous Patent: SCREEN DISPLAY DEVICE
Next Patent: CASTING METHOD FOR UNDERWATER CEMENT HARDENING MATERIAL
Next Patent: CASTING METHOD FOR UNDERWATER CEMENT HARDENING MATERIAL