719:
705:
203:
340:
416:
254:
383:
373:
326:
150:
42:
932:
295:
267:
217:
163:
285:
496:
438:
are designed to dissipate the energy from a water flow during reservoir discharge. They are a round pipe section with an adjustable sleeve gate and cone at the discharge end. Flow is varied by moving the sleeve away or towards its cone seat. The design allows high pressure water from the base of a
362:
most of the time, but in excessive flood conditions they are designed to topple forward, allowing the controlled discharge of water. Multiple fusegates are generally set up side by side, with each fusegate designed to release under progressively extreme flooding, thus minimizing the impact of the
367:
for
Hydroplus (Paris, France), subsidiary of GTM Entrepose. It has been installed on more than 50 dams around the world with sizes ranging from 1 m to more than 9 m in height. Fusegate are typically used to increase the storage capacity of existing dams or to maximize the discharge potential of
423:
Valves used in floodgate applications have a variety of design requirements and are usually located at the base of dams. Often, the most important requirement (besides regulating flow) is energy dissipation. Since water is very heavy, it exits the base of a dam with the enormous force of water
502:
500:
497:
501:
357:
are a mechanism designed to provide the controlled release of water in the event of exceptionally large floods. The design consists of free standing blocks (the fusegates) set side by side on a flattened spillway sill. The
Fusegate blocks act as a fixed
499:
461:
used for floodgate discharge. A cone and seat are inside a pipe. Water flows through an annular gap between the pipe and cone when it is moved downstream, away from the seat. Ribs support the bulb assembly and supply air for water jet
692:
If the rectangular flood gate is submerged below the surface the same equation can be used but only the height from the water surface to the middle of the gate must be used to calculate the force on the flood gate.
498:
107:. In the case of flood bypass systems, floodgates sometimes are also used to lower the water levels in a main river or canal channels by allowing more water to flow into a flood bypass or
141:
in large levee systems slide sideways to open for various traffic. Bulkhead gates can also be made of other materials and used as a single bulkhead unit. Miter gates are used in ship
280:
are hollow gate sections that float on water. They are pinned to rotate up or down. Water is allowed into or out of the flotation chamber to adjust the dam's crest height.
608:
558:
779:
830:
826:
468:
are similar to fixed cone valves, but have an integral collar that discharges water in a narrow stream. They are suitable for heads up to 50 m.
871:
313:
are large cylinders that move in an angled slot. They are hoisted with a chain and have a cogged design that interfaces with their slot.
180:, are wall sections that rotate from vertical to horizontal, thereby varying the height of the dam. They are generally controlled with
103:
system. Since most of these devices operate by controlling the water surface elevation being stored or routed, they are also known as
125:
are vertical walls with movable, or re-movable, sections. Movable sections can be lifted to allow water to pass underneath (as in a
1203:
478:
but with a conical restriction prior to the gate leaf that focuses the water into a jet. They were developed in the 1940s by the
479:
911:
431:
operation, the flow rate, whether the valve operates above or below water, and the regulation of precision and cost.
424:
pushing from above. Unless this energy is dissipated, the flow can erode nearby rock and soil and damage structures.
864:
921:
896:
154:
1167:
857:
783:
364:
636:
207:
35:
17:
1106:
1152:
1208:
1121:
234:
are rotary gates consisting of cylindrical sections. They may rotate vertically or horizontally.
583:
973:
710:
507:
129:) and over the top of the structure. Historically, these gates used stacked timbers known as
531:
1073:
1063:
1028:
242:
804:
8:
1162:
1038:
978:
901:
757:
181:
1198:
1172:
1023:
906:
888:
880:
238:
are a vertical design that rotates up to allow water to pass underneath. Low friction
184:, although some are passive and are powered by the water being impounded. Variations:
1116:
1111:
1101:
330:
1157:
1126:
1093:
1068:
1018:
940:
724:
448:
428:
1147:
1142:
963:
916:
486:
seen in regular gate valves. Jet flow gates are able to handle heads up to 150 m.
108:
747:
246:
1193:
1187:
737:
732:
611:
571:
344:
299:
221:
64:
825:
US Army Corps of
Engineers. (31 July 1995). Engineering manual 1110-2-2607,
677:
length = the horizontal length of a rectangular floodgate measured in metres
363:
floodwater on the river downstream. The System was invented and patented by
99:, or they may be designed to stop water flow entirely as part of a levee or
718:
681:
458:
387:
257:
235:
202:
752:
680:
height = the height of a non-submerged flood gate from the bottom of the
521:
The force on a rectangular flood gate can be calculated by the following
391:
100:
988:
742:
483:
475:
249:, allow this design to close under its own weight as a safety feature.
167:
142:
415:
339:
253:
162:
1048:
968:
953:
849:
658:
447:
to the surrounding environment. Fixed cone valves are able to handle
382:
68:
522:
372:
325:
239:
149:
130:
84:
41:
1058:
948:
931:
626:
515:
444:
294:
138:
49:
31:
266:
216:
1053:
1003:
998:
666:
662:
126:
96:
92:
76:
1083:
1078:
1033:
1013:
1008:
983:
958:
80:
72:
45:
843:
1043:
511:
359:
284:
111:
when the main river or canal is approaching a flood stage.
145:
and usually close at an 18° angle to approximate an arch.
440:
88:
137:
to set the dam's crest height. Some floodgates known as
427:
Other design requirements include taking into account
586:
534:
63:, are adjustable gates used to control water flow in
700:
482:
to allow fine control of discharge flow without the
602:
552:
1185:
846:– project in the Netherlands on floodgates
865:
210:hinged bascule crest gate during installation
645:is the height of the water column in metres.
872:
858:
27:Adjustable gate used to control water flow
805:"Patents by Inventor Francois Lemperiere"
599:
494:
414:
381:
371:
338:
324:
293:
283:
265:
252:
245:, along with a face shape that balances
215:
201:
161:
148:
40:
684:to the water surface measured in metres
319:have an external clamshell leaf design.
30:For gates in a floodwall or levee, see
14:
1186:
879:
827:Planning and Design of Navigation Dams
288:Drum gates are controlled with valves.
853:
83:systems. They may be designed to set
419:Discharge from a Howell-Bunger valve
782:. www.Hydroplus.com. Archived from
480:United States Bureau of Reclamation
48:floodgates created to protect from
24:
912:Integrated coastal zone management
25:
1220:
837:
831:Chapter 5, Overview of gate types
930:
717:
703:
443:to be released without causing
1204:Water transport infrastructure
797:
772:
13:
1:
765:
220:Fish belly flap gates at the
343:Clamshell floodgates at the
7:
1168:Modern recession of beaches
696:
637:acceleration due to gravity
629:of fresh water (1000 kg/m);
10:
1225:
819:
603:{\displaystyle =\rho gh\,}
490:
270:Tainter gates and spillway
208:US Army Corps of Engineers
133:or wooden panels known as
91:, to adjust flow rates in
36:Floodgate (disambiguation)
29:
1135:
1092:
939:
928:
887:
506:Opened floodgates at the
408:
1153:Geotechnical engineering
170:gate at Harlan, Kentucky
114:
1122:Sand dune stabilization
833:. Retrieved 2008-04-14.
376:Typical fusegate sketch
604:
554:
553:{\displaystyle \ F=pA}
518:
420:
394:
377:
368:undersized spillways.
348:
334:
302:
289:
271:
261:
225:
211:
171:
157:
53:
34:. For other uses, see
711:United Kingdom portal
605:
555:
508:Merikoski Power Plant
505:
418:
385:
375:
342:
329:A roller gate on the
328:
297:
287:
269:
256:
219:
205:
190:fish-belly flap gates
165:
153:A sluice gate on the
152:
44:
1074:Van der Meer formula
780:"Fusegate Operation"
639:on Earth (9.8 m/s );
584:
570:= force measured in
532:
1163:Longshore transport
979:Cliff stabilization
902:Coastal engineering
758:Oosterscheldekering
365:François Lempérière
1173:Stream restoration
1024:Honeycomb sea wall
907:Coastal management
881:Coastal management
600:
550:
519:
421:
395:
378:
349:
335:
303:
290:
272:
262:
247:hydrostatic forces
226:
212:
178:Hinged crest gates
172:
158:
54:
1181:
1180:
1117:Living shorelines
1112:Dynamic revetment
1102:Beach nourishment
1029:Hudson's equation
537:
503:
455:Hollow jet valves
436:Fixed cone valves
406:
405:
87:crest heights in
16:(Redirected from
1216:
1158:Land reclamation
1127:Soft engineering
1094:Soft engineering
1019:Hard engineering
941:Hard engineering
934:
874:
867:
860:
851:
850:
813:
812:
801:
795:
794:
792:
791:
776:
727:
725:Transport portal
722:
721:
713:
708:
707:
706:
609:
607:
606:
601:
559:
557:
556:
551:
535:
504:
298:Drum gates on a
119:
118:
21:
1224:
1223:
1219:
1218:
1217:
1215:
1214:
1213:
1184:
1183:
1182:
1177:
1148:Coastal erosion
1143:Beach evolution
1131:
1088:
964:Artificial reef
935:
926:
917:Managed retreat
883:
878:
840:
822:
817:
816:
803:
802:
798:
789:
787:
778:
777:
773:
768:
723:
716:
709:
704:
702:
699:
585:
582:
581:
533:
530:
529:
495:
493:
474:, similar to a
466:Ring jet valves
411:
317:Clamshell gates
182:hydraulic power
117:
109:detention basin
39:
28:
23:
22:
15:
12:
11:
5:
1222:
1212:
1211:
1209:Flood barriers
1206:
1201:
1196:
1179:
1178:
1176:
1175:
1170:
1165:
1160:
1155:
1150:
1145:
1139:
1137:
1136:Related topics
1133:
1132:
1130:
1129:
1124:
1119:
1114:
1109:
1107:Beach drainage
1104:
1098:
1096:
1090:
1089:
1087:
1086:
1081:
1076:
1071:
1066:
1061:
1056:
1051:
1046:
1041:
1036:
1031:
1026:
1021:
1016:
1011:
1006:
1001:
996:
991:
986:
981:
976:
971:
966:
961:
956:
951:
945:
943:
937:
936:
929:
927:
925:
924:
919:
914:
909:
904:
899:
893:
891:
885:
884:
877:
876:
869:
862:
854:
848:
847:
844:DeltaWorks.Org
839:
838:External links
836:
835:
834:
821:
818:
815:
814:
809:Justia Patents
796:
770:
769:
767:
764:
763:
762:
761:
760:
750:
748:Thames Barrier
745:
740:
735:
729:
728:
714:
698:
695:
690:
689:
688:
687:
686:
685:
678:
675:
669:measured in m
652:
651:
650:
649:
648:
647:
646:
640:
630:
598:
595:
592:
589:
575:
561:
560:
549:
546:
543:
540:
492:
489:
488:
487:
469:
463:
462:stabilization.
457:are a type of
452:
410:
407:
404:
403:
397:
396:
379:
369:
351:
350:
336:
322:
321:
320:
314:
305:
304:
291:
281:
274:
273:
263:
250:
228:
227:
213:
199:
198:
197:
194:
191:
188:
174:
173:
159:
146:
123:Bulkhead gates
116:
113:
65:flood barriers
59:, also called
26:
9:
6:
4:
3:
2:
1221:
1210:
1207:
1205:
1202:
1200:
1197:
1195:
1192:
1191:
1189:
1174:
1171:
1169:
1166:
1164:
1161:
1159:
1156:
1154:
1151:
1149:
1146:
1144:
1141:
1140:
1138:
1134:
1128:
1125:
1123:
1120:
1118:
1115:
1113:
1110:
1108:
1105:
1103:
1100:
1099:
1097:
1095:
1091:
1085:
1082:
1080:
1077:
1075:
1072:
1070:
1069:Training wall
1067:
1065:
1062:
1060:
1057:
1055:
1052:
1050:
1047:
1045:
1042:
1040:
1037:
1035:
1032:
1030:
1027:
1025:
1022:
1020:
1017:
1015:
1012:
1010:
1007:
1005:
1002:
1000:
997:
995:
992:
990:
987:
985:
982:
980:
977:
975:
972:
970:
967:
965:
962:
960:
957:
955:
952:
950:
947:
946:
944:
942:
938:
933:
923:
920:
918:
915:
913:
910:
908:
905:
903:
900:
898:
895:
894:
892:
890:
886:
882:
875:
870:
868:
863:
861:
856:
855:
852:
845:
842:
841:
832:
828:
824:
823:
810:
806:
800:
786:on 2013-10-23
785:
781:
775:
771:
759:
756:
755:
754:
751:
749:
746:
744:
741:
739:
738:Tidal barrage
736:
734:
733:Flood barrier
731:
730:
726:
720:
715:
712:
701:
694:
683:
679:
676:
673:
672:
671:
670:
668:
664:
660:
656:
653:
644:
641:
638:
634:
631:
628:
624:
621:
620:
618:
617:
616:
615:
613:
596:
593:
590:
587:
579:
576:
573:
569:
566:
565:
564:
547:
544:
541:
538:
528:
527:
526:
524:
517:
513:
509:
485:
481:
477:
473:
472:Jet flow gate
470:
467:
464:
460:
456:
453:
450:
446:
442:
437:
434:
433:
432:
430:
429:pressure head
425:
417:
413:
402:
399:
398:
393:
389:
384:
380:
374:
370:
366:
361:
356:
353:
352:
346:
345:Arrowrock Dam
341:
337:
332:
327:
323:
318:
315:
312:
309:
308:
307:
306:
301:
300:diversion dam
296:
292:
286:
282:
279:
276:
275:
268:
264:
259:
255:
251:
248:
244:
241:
237:
236:Tainter gates
233:
230:
229:
223:
222:Scrivener Dam
218:
214:
209:
204:
200:
196:Pelican gates
195:
193:Bascule gates
192:
189:
186:
185:
183:
179:
176:
175:
169:
164:
160:
156:
151:
147:
144:
140:
136:
132:
128:
124:
121:
120:
112:
110:
106:
102:
98:
94:
90:
86:
82:
78:
74:
70:
66:
62:
58:
51:
47:
43:
37:
33:
19:
993:
808:
799:
788:. Retrieved
784:the original
774:
691:
682:water column
654:
642:
632:
622:
610:measured in
580:= pressure
577:
567:
562:
520:
471:
465:
459:needle valve
454:
451:up to 300 m.
435:
426:
422:
412:
400:
388:Terminus Dam
386:Fusegate in
354:
316:
311:Roller gates
310:
277:
258:Tainter gate
232:Radial gates
231:
177:
155:Harran canal
134:
122:
104:
60:
56:
55:
753:Delta Works
401:Mitre gates
392:Lake Kaweah
331:Mississippi
135:flashboards
127:sluice gate
105:crest gates
101:storm surge
1188:Categories
989:Flood wall
974:Breakwater
922:Submersion
889:Management
790:2013-11-21
766:References
743:Canal lock
484:cavitation
476:gate valve
278:Drum gates
224:, Canberra
168:flood wall
61:stop gates
57:Floodgates
18:Flood gate
1199:Hydrology
1049:Revetment
994:Floodgate
969:Breachway
954:Accropode
897:Accretion
659:rectangle
657:= area =
591:ρ
355:Fusegates
187:flap gate
69:reservoir
1064:Tetrapod
697:See also
523:equation
243:bearings
240:trunnion
139:coupures
131:stoplogs
85:spillway
1059:Seawall
949:A-Jacks
820:Sources
665:×
635:is the
627:density
625:is the
619:where:
572:newtons
563:where:
516:Finland
491:Physics
445:erosion
260:diagram
93:sluices
50:typhoon
32:Coupure
1054:Riprap
1004:Groyne
999:Gabion
674:where:
667:height
663:length
623:ρ
612:pascal
536:
409:Valves
97:canals
77:stream
52:surges
1084:Xbloc
1079:Wharf
1034:KOLOS
1014:Levee
1009:Jetty
984:Dolos
959:Akmon
614:(Pa)
449:heads
143:locks
115:Types
81:levee
79:, or
73:river
46:Tokyo
1194:Dams
1044:Pier
1039:Mole
512:Oulu
360:weir
95:and
89:dams
574:(N)
510:in
441:dam
1190::
829:,
807:.
661::
525::
514:,
390:-
333:.
206:A
166:A
75:,
71:,
67:,
873:e
866:t
859:v
811:.
793:.
655:A
643:h
633:g
597:h
594:g
588:=
578:p
568:F
548:A
545:p
542:=
539:F
347:.
38:.
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
