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APPARATUS FOR DETECTING RIVER WATER INCREASE
PROBLEM TO BE SOLVED: To provide an apparatus for detecting water increase that can determine the risk of flooding according to the state of the embankment so that flood damage can be prevented beforehand.SOLUTION: An alarm 8 for notifying on the embankment top 91 and a water level detector 2 connected to the alarm 8 with a wire 7 and provided on the slope face 92 of the river are provided. The water level detector 2 includes a float 4 that moves up and down inside a tubular member 3, and when the float 4 comes to the uppermost position, it contacts the sensor 5 and detects that the dangerous water level has been reached. Further, in order to enable the float 4 to rise during water increase, an opening portion 31 is provided on the bottom surface of the tubular member 3 and a hole portion 32 is provided on the side surface so that the float 4 is not pulled downward by Bernoulli's theorem.SELECTED DRAWING: Figure 2
【課題】堤防の状態に応じて氾濫の危険性を判断できるようにして、水害を未然に防止できるようにした増水検知装置を提供する。【解決手段】堤防上面91で報知を行う報知器8と、この報知器8にワイヤー7で連結され河川の法面92に設けられる水位検知器2とを設けるようにする。この水位検知器2は、筒状部材3の内側で上下動するフロート4を設けて構成し、フロート4が最上部にきたときにセンサー5に接触して危険水位に達したことを検知する。また、増水時のフロート4の上昇を可能にすべく、筒状部材3の底面に開口部31を設けるとともに、側面に穴部32を設け、ベルヌーイの定理によってフロート4が下方に引き込まれないようにする。【選択図】図2
APPARATUS FOR DETECTING RIVER WATER INCREASE
PROBLEM TO BE SOLVED: To provide an apparatus for detecting water increase that can determine the risk of flooding according to the state of the embankment so that flood damage can be prevented beforehand.SOLUTION: An alarm 8 for notifying on the embankment top 91 and a water level detector 2 connected to the alarm 8 with a wire 7 and provided on the slope face 92 of the river are provided. The water level detector 2 includes a float 4 that moves up and down inside a tubular member 3, and when the float 4 comes to the uppermost position, it contacts the sensor 5 and detects that the dangerous water level has been reached. Further, in order to enable the float 4 to rise during water increase, an opening portion 31 is provided on the bottom surface of the tubular member 3 and a hole portion 32 is provided on the side surface so that the float 4 is not pulled downward by Bernoulli's theorem.SELECTED DRAWING: Figure 2
【課題】堤防の状態に応じて氾濫の危険性を判断できるようにして、水害を未然に防止できるようにした増水検知装置を提供する。【解決手段】堤防上面91で報知を行う報知器8と、この報知器8にワイヤー7で連結され河川の法面92に設けられる水位検知器2とを設けるようにする。この水位検知器2は、筒状部材3の内側で上下動するフロート4を設けて構成し、フロート4が最上部にきたときにセンサー5に接触して危険水位に達したことを検知する。また、増水時のフロート4の上昇を可能にすべく、筒状部材3の底面に開口部31を設けるとともに、側面に穴部32を設け、ベルヌーイの定理によってフロート4が下方に引き込まれないようにする。【選択図】図2
APPARATUS FOR DETECTING RIVER WATER INCREASE
河川における増水検知装置
TANAKA SUSUMU (Autor:in)
21.06.2018
Patent
Elektronische Ressource
Japanisch
IPC:
E02B
HYDRAULIC ENGINEERING
,
Wasserbau