CN201003154Y

CN201003154Y - Curved surface diversion canal headwork

Info

Publication number: CN201003154Y
Application number: CNU2006201731293U
Authority: CN
Inventors: 高亚平; 何晓宁; 李凤兰; 库尔班
Original assignee: XINJIANG WATER CONSERVANCY AND HYDROPOWER ENGINEERING SERVICE Co
Current assignee: XINJIANG WATER CONSERVANCY AND HYDROPOWER ENGINEERING SERVICE Co
Priority date: 2006-12-15
Filing date: 2006-12-15
Publication date: 2008-01-09
Anticipated expiration: 2016-12-15

Abstract

The utility model relates to a water conservancy, pertaining to a sand control and sand drainage water diversion head, in particular to a curved strip surface water diversion head. The concave bank of the river bend channel is provided with at least three parallel water diversion sand flushing channel with a water inlet provided with a curve sand blocking ridge whose top surfaces has the same height with the bottom of water inlet of the water diversion sand flushing channel, and the back half of the channel banks on the two neighboring water diversion sand flushing channels is provided with a water diversion channel parallel with the water diversion sand flushing channel, and the end of the water diversion channel is connected with a water diversion corridor; besides sand flushing valves are respectively arranged at the end of each water diversion sand flushing channel with an outlet connected with a diversion channel by passing through the transition groove on the water diversion corridor, and the diversion channel connects the river. Having a reasonable structure design, the utility model not only realizes fractional sand flushing and continuous water fetching, but also conveniently performs the sand control and sand drainage, promising a perfect sand-water separation effect.

Description

Knee face diversion head works

Technical field

The utility model relates to hydraulic engineering, belongs to sand control, sediment outflow diversion head works, particularly knee face diversion head works.

Background technology

At present, the kind of diversion head works is more, as: end barrier formula diversion head works, dam and sluice-gate formula diversion head works etc., these diversion head works respectively have pluses and minuses.

End barrier formula diversion head works: the end barrier formula diversion head works of employing is to prevent that silt particle from entering a kind of effective measures of water-drawing channel.It and other diversion head works relatively have: arrange that easy, simple in structure, easy construction, construction costs are low, be easy to advantages such as operation management.The major defect of end barrier formula diversion head works: be to block particle diameter and enter water-drawing corridor less than the silt particle in grizzly bar gap.And foreign material, part stone can be stuck between grizzly bar, and the grid water flow was reduced.Pound on barrier when the boulder in the flood, cause grizzly bar to break easily.

Dam and sluice-gate formula diversion head works: the operation of control hinge that can be initiative and flexible; Utilize the part unlatching of regulating dam or all open the flood discharge sediment outflow, can control the river course major trough effectively; Preceding storage capacity and the sand setting sand washing storage capacity regulated of lock that keeps a long-term stability; Be convenient to the two sides diversion.Shortcoming: this water diversion project, than other form water diversion project costs higher, technical condition are more complicated also; Diversion is drawn sand, sand moisture from relatively more difficult.

Summary of the invention

The purpose of this utility model is to provide a kind of knee face diversion head works, and reasonable in design can realize substep sand washing, water intaking continuously, can carry out sand control, sediment outflow easily, and sand moisture is from effective.

The purpose of this utility model is achieved in that a kind of knee face diversion head works, at least 3 diversion sand washing canals arranged side by side are being set on the concave bank of river course bend, before diversion sand washing canal water inlet, shaped form sand block bank is being set, the bottom surface of the end face of sand block bank and diversion sand washing canal water inlet is contour, on the latter half of canal dike of two adjacent diversion sand washing canals, be provided with and the parallel channel of approach of diversion sand washing canal, the end of channel of approach is connecting water-drawing corridor, end at every diversion sand washing canal is installed with scouring sluice respectively, the outlet of diversion sand washing canal is connecting diversion channel by the aqueduct of crossing over water-drawing corridor, and diversion channel is connecting the river course.

The utility model has been used and has been utilized bend convex bank sand setting, the principle of concave bank diversion, before diversion sand washing canal water inlet, build shaped form sand block bank, making the current in river course be camber line along shaped form sand block bank advances, before taking bed loads such as river course quicksand the scouring sluice of river course to, pour downstream river course, realize first order sand moisture from, and draw and get the more clear river in top layer, make the more clear current in concave bank top layer cross sand blocking board and enter diversion sand washing canal, the silt particle that enters diversion sand washing canal is significantly reduced, the sand washing closing gate of diversion sand washing canal end, formation is choked water, flow rate of water flow reduces, and causes silt particle to sink under action of gravity, forms alluvial.When diversion sand washing channel water position surpassed channel of approach canal dike, current overflowed in the adjacent channel of approach naturally, entered water-drawing corridor then and introduced supply canal, realized the water sand separation of second step.When sediment deposition is to certain thickness in the diversion sand washing canal, 3 scouring sluices that above diversion sand washing canal is installed are respectively opened a scouring sluice earlier and are carried out sand washing, and remaining scouring sluice is still closed, choke water the sand setting diversion, can under the situation that does not influence water supply, carry out sand setting, sediment outflow like this.Behind the gate opening, current carry silt particle and flow into the downstream, river course through aqueduct to diversion channel, realize second level sand moisture from.Close scouring sluice after sand washing finishes, open next scouring sluice again.3 above diversion sand washing canals scouring sluice is separately opened in order, carries out the substep sand washing, closes this scouring sluice after sand washing finishes, and chokes water the sand setting diversion in succession, has guaranteed continuous water supply.The utility model reasonable in design is utilized the sand washing of bend convex bank, the principle of concave bank diversion, and realization two-stage sand moisture has been realized convenience sand control, sediment outflow swimmingly from process, sand moisture is from effective.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is a main TV structure schematic diagram of the present utility model;

Fig. 2 is the A-A sectional structure schematic diagram of Fig. 1;

Fig. 3 is the B-B sectional structure schematic diagram of Fig. 1;

Fig. 4 is the C-C sectional structure schematic diagram of Fig. 1.

The specific embodiment

A kind of knee face diversion head works, as Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, at least 3 diversion sand washing canals 3 arranged side by side are being set on the concave bank of river course 1 bend, and the shape of cross section of diversion sand washing canal 3 is inverted isosceles trapezoid, and the quantity of diversion sand washing canal 3 is the 3-9 bar.The trend of diversion sand washing canal 3 is consistent with the direction of river course 1 current.Before diversion sand washing canal 3 water inlets shaped form sand block bank 2 is being set, the bottom surface of the end face of sand block bank 2 and diversion sand washing canal 3 water inlets is contour.Outwards protrude on the top that is shaped as barricade of sand block bank 2 cross sections, and the underrun arc transition face of the outside projection of barricade is connected with the lateral surface of barricade.The channel of approach 4 parallel with diversion sand washing canal 3 is being set on the latter half of canal dike of two adjacent diversion sand washing canals 3, and the end of channel of approach 4 is connecting water-drawing corridor 6, and the shape of cross section of channel of approach 4 is a rectangle.End at every diversion sand washing canal 3 is installed with scouring sluice 5 respectively, and the outlet of diversion sand washing canal 3 is connecting diversion channel 8 by the aqueduct 7 of crossing over water-drawing corridor 6, and diversion channel 8 is connecting river course 1.Diversion sand washing canal 3 end face elevations are than scouring sluice 5 floor elevation height.Like this, form the nature abrupt slope between diversion sand washing canal 3 delivery ports and the flood discharge scouring sluice 5, hold the sand current under the arm and can flow through that flood discharge scouring sluice 5 is laggard goes into main stem along the abrupt slope.The utility model is shown in Figure 1, and 7 diversion sand washing canals 3 and 6 channel of approach 4 are being set on the concave bank of river course 1 bend, the time opens 2 hole scouring sluices in operation, remains 5 hole scouring sluices and closes and be used for diversion and satisfy downstream water needs.

Claims

1, a kind of knee face diversion head works, it is characterized in that: at least 3 diversion sand washing canals (3) arranged side by side are being set on the concave bank of river course (1) bend, before diversion sand washing canal (3) water inlet, shaped form sand block bank (2) is being set, the bottom surface of the end face of sand block bank (2) and diversion sand washing canal (3) water inlet is contour, the channel of approach (4) parallel with diversion sand washing canal (3) is being set on the latter half of canal dike of adjacent two diversion sand washing canals (3), the end of channel of approach (4) is connecting water-drawing corridor (6), end at every diversion sand washing canal (3) is installed with scouring sluice (5) respectively, the outlet of diversion sand washing canal (3) is connecting diversion channel (8) by the aqueduct (7) of crossing over water-drawing corridor (6), and diversion channel (8) is connecting river course (1).

2, knee face diversion head works according to claim 1, it is characterized in that: outwards protrude on the top that is shaped as barricade of sand block bank (2) cross section, and the underrun arc transition face of the outside projection of barricade is connected with the lateral surface of barricade.

3, knee face diversion head works according to claim 1, it is characterized in that: the shape of cross section of diversion sand washing canal (3) is inverted isosceles trapezoid.

4, according to claim 1 or 3 described knee face diversion head works, it is characterized in that: the quantity of diversion sand washing canal (3) is the 3-9 bar.

5, knee face diversion head works according to claim 1, it is characterized in that: the shape of cross section of channel of approach (4) is a rectangle.

6, knee face diversion head works according to claim 1, it is characterized in that: diversion sand washing canal (3) end face elevation is than scouring sluice (5) floor elevation height.