CN202595796U - Water taking structure for riverbed surface water - Google Patents

Abstract

The utility model discloses a riverbed surface water intake structure, which comprises a water intake head, a water diversion canal and a water absorption pool connected in series and interconnected, the lower part of the water intake head adopts a prefabricated caisson, and the upper part of the water intake head is cast on site formed; the diversion channel is formed by reinforced concrete prefabricated parts; the outer periphery of the water absorption pool is arranged with a number of structural piles, and a water stop pile is arranged between every two adjacent structural piles. The bottom plate of the pool is made of reinforced gabion and pebbles, and there are many support columns and support piles in the middle of the water absorption pool. The utility model effectively solves the problems of difficulty in pouring reinforced concrete for water intake structures caused by a large amount of groundwater, and has low engineering investment, short construction period and good promotion prospects.

Description

River bed surface water intake structures

technical field

The utility model relates to a water intake device, in particular to a surface water intake structure suitable for riverbeds with abundant groundwater.

Background technique

In the prior art, the water intake head, the water absorption pool and the water intake pump station of the surface water intake structure are cast-in-place reinforced concrete structures, and the water-stop curtain scheme is commonly used for water-stop construction. However, during the construction of the water intake project, a certain factory found that the groundwater in the riverbed was very rich. Due to the large amount of groundwater, it was difficult to pour reinforced concrete on site, which made the original construction plan of the dewatering well dewatering impossible to implement. Relevant units proposed proposals such as setting support piles on the foundation pit wall of the water absorption pool and setting up water-stop curtains around it, high-spray water-cut curtain piles to cooperate with well point dewatering, and high-pressure jet jet piles as water-stop curtains. Huge, high cost, and long construction period.

Therefore, there is an urgent need to design a surface water intake structure suitable for river beds with abundant groundwater.

Utility model content

Aiming at the deficiencies in the prior art, the purpose of this utility model is to provide a riverbed surface water intake structure that can effectively solve the difficulty in pouring reinforced concrete caused by the large amount of groundwater.

In order to achieve the above object, the utility model provides a river bed surface water intake structure, which includes a water intake head connected in series and interconnected, a water diversion channel and a water absorption pool. The lower part of the water intake head adopts a prefabricated caisson, and the upper part of the water intake head It is formed by pouring reinforced concrete on site; the diversion channel is formed by reinforced concrete prefabricated parts; there are a number of structural piles arranged on the outer periphery of the water absorption pool, and a water-stop pile is arranged between every two adjacent structural piles, and the water-stop pile is located between the structural piles In the periphery of the water-absorbing pool, the bottom plate of the water-absorbing pool is formed of reinforced gabions and pebbles, and a number of support columns and supporting piles are arranged in the middle of the water-absorbing pool.

According to one embodiment of the river bed surface water intake structure of the present utility model, the water intake head is in the form of a circle and the water intake head is provided with a high water inlet, a low water inlet and a water control gate, the caisson is a circular caisson and the caisson The foundation adopts percussive bored piles.

According to an embodiment of the river bed surface water intake structure of the present invention, the river bed surface water intake structure further includes a grid well arranged before the water inlet of the suction pool, and a grid is arranged in the grid well.

According to an embodiment of the river bed surface water intake structure of the present invention, the lower half of the grid well is formed by reinforced concrete prefabricated parts, the upper half of the grid well is formed by cast-in-place reinforced concrete, and the foundation of the grid well is Percussive bored piles are used.

According to an embodiment of the river bed surface water intake structure of the present invention, the river bed surface water intake structure further includes a water absorption pump station arranged above the water absorption pool.

According to an embodiment of the river bed surface water intake structure of the present invention, the water suction pumping station adopts a vertical long-axis pump.

According to an embodiment of the riverbed surface water intake structure of the present invention, the foundation of the diversion channel adopts percussion bored piles.

The utility model effectively solves the problems of difficulty in pouring reinforced concrete for water intake structures caused by a large amount of groundwater, and has low engineering investment, short construction period and good promotion prospects.

Description of drawings

Fig. 1 is a schematic top view of a river bed surface water intake structure according to an exemplary embodiment of the present invention.

Fig. 2 is a schematic front view of a river bed surface water intake structure according to an exemplary embodiment of the present invention.

Explanation of reference signs:

1-water intake head, 1-1-lower part of water intake head, 1-2-upper part of water intake head, 1-3-low water inlet, 1-4-water control gate, 2-diversion channel, 3-water absorption Pool, 3-1-structural pile, 3-2-water stop pile, 3-3-support pile, 3-4-support column, 4-grid well, 5-grid, 6-absorbing pump station, 6- 1-pump, 7-river section line

Detailed ways

Hereinafter, the riverbed surface water intake structure of the exemplary embodiment of the present utility model will be described in detail with reference to the accompanying drawings.

Fig. 1 is a top view schematic diagram of a river bed surface water intake structure in an exemplary embodiment of the utility model, and Fig. 2 is a front schematic view of a river bed surface water intake structure in an exemplary embodiment of the utility model. As shown in Figures 1 and 2, the river bed surface water intake structure according to this embodiment includes a water intake head 1, a water diversion channel 2 and a water absorption pool 3 connected in series and interconnected, wherein the water intake head 1 is the entrance of the entire water intake structure. For the water part, the water diversion channel 2 is used to introduce the raw water into the water absorption pool 3 and the water diversion channel 2 has a slope that allows the raw water to flow into the water absorption pool 3. The water absorption pool 3 is used to temporarily store the raw water, and then pumped out from the water absorption pool 3 by pumping Raw water for subsequent processes.

The water intake head 1 is composed of a lower prefabricated caisson and an upper cast-in-place structure, and its main function is to introduce river water into the water absorption pool 3 so as to draw water with a long-axis pump. In order to overcome the adverse effects of a large amount of groundwater on site pouring reinforced concrete, the lower part 1-1 of the water intake head in the utility model adopts a prefabricated caisson, and the top 1-2 of the water intake head is formed by pouring reinforced concrete on site. The water intake head 1 adopts a reinforced concrete structure, and the lower part 1-1 of the water intake head is mainly below the groundwater level. In order to avoid underwater concrete pouring, a caisson is prefabricated on the shore. After the caisson is prefabricated, it can be directly placed on the impact bored pile foundation . The top 1-2 of the water intake head is mainly above the groundwater level, and after the lower caisson is hoisted in place, concrete is directly poured on the caisson to form the integral water intake head 1 at last. In this embodiment, the water intake head 1 is circular and is provided with a high water inlet (not shown), a low water inlet 1-3 and a water control gate 1-4 in the water intake head 1, and raw water enters from the water inlet After the water intake head 1 flows into the diversion channel 2 through the water control gate 1-4; the caisson is a circular caisson and the foundation of the caisson adopts percussion bored piles. Since the water intake head 1 is located on the bank, it needs to be filled with soil to form a cofferdam, and then It is suitable to use percussion drilled piles here, and it is not suitable to use rotary piles and manhole piles, because rotary piles cannot be constructed on large pebbles, and the implementation of manhole piles cannot be carried out. Wherein, the structure of the water intake head 1 and the caisson is not limited to a circle, and can also be a square, a rectangle, etc., but the circular shape is mainly used to prevent erosion and reduce the accumulation of sundries in the water intake. Moreover, the aqueduct 2 is formed by reinforced concrete prefabricated parts, and preferably, the foundation of the aqueduct 2 also adopts percussive bored piles. The lower part 1-1 of the water intake head and the water diversion channel 2 are formed in a prefabricated manner, which can effectively avoid the problem of difficulty in pouring on site.

In addition, the water-absorbing pool 3 adopts the structural form of "pile row maintenance + construction floor". The specific structure is as follows. 1 is provided with a water-stop pile 3-2, and the water-stop pile 3-2 is located on the periphery of the structural pile 3-1. The bottom plate of the water-absorbing pool 3 is formed of steel gabion and pebbles. Column 3-4 and support pile 3-3. Among them, the structural pile 3-1 has the function of replacing the pool wall and retaining the soil; the water-stop pile 3-2 has the function of water-stopping, preventing the surrounding farmland surface water from pouring into the water-absorbing pool in large quantities, causing the surrounding groundwater level to drop and affecting agricultural production. The infiltration of a small amount of groundwater is allowed; the support column 3-4 and the support pile 3-3 mainly bear the load of the upper water intake pumping station. Changing the reinforced concrete structure before the water-absorbing pool 3 to the above-mentioned structure of the water-absorbing pool 3 effectively solves the problem of difficult pouring on site, and shortens the construction period while ensuring the construction quality.

In order to prevent the silt and floating matter in the raw water from entering the water-absorbing pool 3 to block the channel or damage the impeller of the water pump, a grid well 4 can be set before the water inlet of the water-suction pool 3, and a grid 5 is arranged in the grid well 4, and the grid 5 is used to intercept floating objects or fish in raw water, and the type of grille 5 can be specifically selected according to needs. Similarly, the lower half of the grid well 4 is also formed by reinforced concrete prefabricated parts, the upper half of the grid well 4 is formed by pouring reinforced concrete on site, and the foundation of the grid well 4 can also adopt percussion drilled piles.

In addition, the river bed surface water intake structure of the present utility model also includes a water suction pump station 6 arranged above the water suction pool 3, and the water suction pump station 6 absorbs and transfers the raw water temporarily stored in the water suction pool 3, wherein the pump of the water suction pump station 6 6-1 is preferably a vertical long shaft pump. Since the water suction pumping station 6 is a prior art, it will not be described in detail here.

To sum up, the river bed surface water intake structure of the present invention can effectively solve the problems of difficulty in pouring reinforced concrete on site due to large amount of groundwater, and has low project investment and short construction period, and has a good promotion prospect.

Although the riverbed surface water intake structure of the present invention has been described above in conjunction with the exemplary embodiments, it should be clear to those skilled in the art that, without departing from the spirit and scope defined in the claims, the above exemplary embodiments can be Adjust or modify the example.

Claims (7)

1. a riverbed surface water intake strucure comprises the water intaking head, channel of approach and the priming reservoir that are connected in series and interconnect, it is characterized in that,

Prefabricated caisson is adopted in the bottom of water intaking head, and the top of water intaking head is formed by cast-in-site steel concrete;

Channel of approach is formed by reinforced concrete precast member;

The periphery of priming reservoir is disposed with the stake of many root architectures; Be provided with water-seal pile between per two adjacent structure stakes; Water-seal pile is positioned at the periphery of structure stake, and the base plate of priming reservoir adopts reinforced gabion and cobble to form, and the centre of priming reservoir is provided with many support columns and supporting pile.

2. riverbed according to claim 1 surface water intake strucure; It is characterized in that; Said water intaking head is to be provided with high water inlet, low water inlet and system sluice gate in circular form and the water intaking head, and caisson is that the percussive drilling stake is adopted on the basis of circular caisson and caisson.

3. riverbed according to claim 1 surface water intake strucure is characterized in that, said riverbed surface water intake strucure also comprises the grille well before the water inlet that is arranged on the priming reservoir, is provided with grid in the grille well.

4. riverbed according to claim 3 surface water intake strucure; It is characterized in that; The latter half of said grille well is formed by reinforced concrete precast member, and the first half of grille well is formed by cast-in-site steel concrete, and the percussive drilling stake is adopted on the basis of grille well.

5. riverbed according to claim 1 surface water intake strucure is characterized in that, said riverbed surface water intake strucure also comprises the suction pumping plant that is arranged on top, priming reservoir.

6. riverbed according to claim 5 surface water intake strucure is characterized in that, said suction pumping plant adopts vertical long shaft pump.

7. riverbed according to claim 1 surface water intake strucure is characterized in that, the percussive drilling stake is adopted on the basis of said channel of approach.

Images