Rapid flow guide structure

Abstract

The utility model relates to the technical field of hydraulic engineering, in particular to a rapid flow guide structure which comprises a construction river reach constructed through a dry method, a first water area is arranged beside the construction river reach, the first water area comprises a first water outlet connected with the construction river reach, a flow guide cofferdam is arranged on the construction river reach, the first water outlet is connected with the flow guide cofferdam, and the first water outlet is connected with the flow guide cofferdam. And the diversion cofferdam is connected with the pilot channel. According to the rapid flow guide structure, the flow guide cofferdam is arranged on the construction river reach to be connected with the first water outlet and the pilot channel, and water in the first water area sequentially passes through the first water outlet and the flow guide cofferdam to be discharged into the pilot channel; the problem that a dry-method construction environment cannot be formed due to the fact that water in the first water area is increased and then spills into the construction river reach is solved, and the rapid flow guide structure is simple in structure, convenient to construct and good in effect.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic engineering, in particular to a rapid diversion structure. Background Art

[0002] When constructing hydraulic projects such as hydropower stations and flood control dams on a river, the adjacent upstream river section often needs to be dredged to remove sediment, so as to avoid the sediment in the river from silting up at the dam body in the later stage. The existing technology mostly uses gabion mattresses to fill the bottom and both banks, which can effectively prevent the siltation of the dredged sediment.

[0003] If the construction method of using a waterborne assembled dredger to excavate the river and a floating crane on the water to hoist and install gabion mattresses is adopted, due to poor underwater visibility, divers are required to cooperate in positioning construction, the construction quality is difficult to guarantee, the safety risk is high, and after the gabion mattresses are laid, they need to be transported by ship and installed by a crane, resulting in slow construction progress.

[0004] In order to improve the construction quality, reduce the safety risk, and speed up the construction progress, the waterborne construction can also be changed to dry construction, that is, a pilot channel is excavated beside the construction river section, and cofferdams are set at the upstream and downstream of the construction river section to drain the water in the construction river section and form a dry construction environment in the construction river section.

[0005] However, as Figure 1 shown, in some projects, there are still some water areas beside the construction river section 1, such as lakes, ponds, tributaries, etc., and the water outlets of these water areas are connected to the construction river section 1, that is, the daily drainage of these water areas flows into the construction river section 1. Now, although the water outlets of these water areas can be blocked when the construction river section 1 is transferred to dry construction, as the water continuously flows into these water areas, such as the inflow of living water or rainfall, the water volume in these water areas exceeds the carrying capacity and will still flood into the construction river section 1 in the dry construction environment. Therefore, it is necessary to divert and drain the water in these water areas. Content of the Utility Model

[0006] The purpose of the utility model is to provide a rapid diversion structure for the problem that the water areas beside the river sections under dry construction in the prior art need to be diverted.

[0007] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0008] A rapid diversion structure includes a construction river section under dry construction. There is a first water area beside the construction river section. The first water area includes a first water outlet connecting the construction river section. A diversion cofferdam is arranged on the construction river section. The first water outlet is connected to the diversion cofferdam, and the diversion cofferdam is connected to the pilot channel.

[0009] By adopting a rapid diversion structure described in the utility model, the diversion cofferdam is arranged on the construction river section to connect the first water outlet and the pilot channel, and the water in the first water area is discharged into the pilot channel through the first water outlet and the diversion cofferdam in sequence, so as to avoid the problem that the water volume in the first water area increases and overflows into the construction river section, thereby preventing the dry construction environment from being formed. The rapid diversion structure has a simple structure, is easy to construct, and has a good effect.

[0010] As a preferred technical solution of the utility model, the upstream end and the downstream end of the construction river section are respectively provided with interception cofferdams.

[0011] As a further preferred technical solution of the present invention, the interception cofferdam is a steel sheet pile cofferdam.

[0012] As a preferred technical solution of the utility model, the diversion cofferdam is connected to the pilot channel through a first diversion channel, and the first diversion channel is arranged in the area between the construction river section and the pilot channel.

[0013] As a further preferred technical solution of the present invention, the first diversion channel is an open channel or a concealed channel.

[0014] As a preferred technical solution of the utility model, the pilot channel is an open channel or a concealed channel.

[0015] As a preferred technical solution of the utility model, there is a second water area beside the construction river section, the second water area is cut off to connect the second water outlet of the construction river section, and the second water area is connected to the first water area through a connecting port.

[0016] In the case where there are multiple water areas beside the construction river section, this structure is used to connect the multiple water areas, block the redundant water outlets, and leave only one water outlet connected to the diversion cofferdam, avoiding the setting of multiple diversion cofferdams in the construction river section.

[0017] As a further preferred technical solution of the present utility model, the first water area is a lake, a pond or a river, and the second water area is a lake, a pond or a river.

[0018] As a preferred technical solution of the utility model, the diversion cofferdam includes a dam body, and two rows of steel sheet piles are arranged on the dam body. A second diversion channel is between the two rows of steel sheet piles, and the second diversion channel is connected to the first water outlet and the pilot channel.

[0019] As a further preferred technical solution of the present invention, the second diversion channel is an open channel or a concealed channel.

[0020] As a further preferred technical solution of the present invention, a surrounding purlin is provided between the two rows of steel sheet piles.

[0021] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0022] 1. For a rapid diversion structure described in the present utility model, by arranging the diversion cofferdam on the construction river section to connect the first water outlet and the pilot channel, the water in the first water area is discharged into the pilot channel successively through the first water outlet and the diversion cofferdam, avoiding the problem that the water in the first water area floods into the construction river section after the water volume increases, and thus unable to form a dry construction environment. This rapid diversion structure has a simple structure, convenient construction and good effects.

[0023] 2. For a preferred rapid diversion structure of the present utility model, in the case where there are multiple water areas beside the construction river section, the multiple water areas are connected, the redundant water outlets are blocked, and only one water outlet is left to be connected with the diversion cofferdam, avoiding the setting of multiple diversion cofferdams in the construction river section. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a plan view of the construction river section;

[0025] Figure 2 It is a plan layout diagram of the rapid diversion structure;

[0026] Figure 3 It is a cross-sectional view of the diversion cofferdam.

[0027] Markings in the figure: 1 - construction river section, 2 - pilot channel, 3 - first water area, 31 - first water outlet, 4 - second water area, 41 - second water outlet, 42 - connection port, 5 - closure cofferdam, 6 - diversion cofferdam, 61 - dam body, 62 - steel sheet pile, 63 - second diversion channel, 64 - waling, 7 - first diversion channel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The present invention will be further described in detail below in combination with test examples and specific embodiments. However, this should not be understood that the scope of the above subject matter of the present invention is limited to the following embodiments, and all technologies implemented based on the content of the present invention belong to the scope of the present invention.

[0029] Unless otherwise specified, in the description of the specific embodiments of the present invention, the expression terms indicating the orientation or positional relationship, such as "upper", "lower", "left", "right", "center", "inner", "outer", etc., are all based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the invention product / device / equipment is commonly used. These terms of orientation or positional relationship are only for the convenience of describing the solution of the present invention or simplifying the description in the specific embodiments, so as to facilitate technicians to quickly understand the solution, rather than indicating or implying that a specific device / component / element must have a specific orientation or be constructed and operated in a specific positional relationship. Therefore, it should not be construed as a limitation to the present invention.

[0030] In addition, if terms such as "horizontal", "vertical", "hanging", "parallel" appear, it does not mean that the corresponding device / component / element is required to be absolutely horizontal or vertical or hanging or parallel, but it can be slightly inclined or have a deviation. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and it does not mean that the structure must be completely horizontal, but it can be slightly inclined. Or, it can be simply understood that the corresponding device / component / element is arranged in the directions of "horizontal", "vertical", "hanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still perform its function in the solution of the present invention.

[0031] In addition, when expressions such as "first", "second", "third", etc. appear in the terms, they are only used to distinguish the description of the same or similar components, and should not be understood as emphasizing or implying the relative importance of specific components.

[0032] In addition, in the description of the embodiments of the present invention, "several", "multiple", "a number of" represent at least 2. It can be any situation such as 2, 3, 4, 5, 6, 7, 8, 9, etc., and even can be more than 9.

[0033] In addition, in the description of the technical solution of the present invention, unless otherwise clearly specified / defined / limited, where terms such as "set", "installed", "connected", "coupled", "provided with", "laid", "arranged" appear, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be connection means commonly used in the art such as welding, riveting, bolting, threaded connection, etc. This connection can be a mechanical connection, an electrical connection or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements.

[0034] In the related art, if there are live water areas beside the construction section, such as lakes, ponds, tributaries, etc., and the water outlets of these areas are connected to the construction section, that is, the daily drainage of these areas is discharged into the construction section. Now, if the construction section is transferred to dry construction, although the water outlets of these areas can be blocked, as water continuously flows into these areas, such as live water inflow or rainfall, the water volume in these areas exceeds the carrying capacity and will still flood into the construction section in the dry construction environment. Therefore, it is necessary to divert and discharge the water in these areas. For this reason, the technical solution of this application is generated. The following will be described in conjunction with Figures 1 to 3 for elaboration.

[0035] Embodiment 1

[0036] As Figures 1 to 3 shown, a rapid diversion structure of the present utility model includes a construction section 1 for dry construction. There is a first water area 3 beside the construction section 1. The first water area 3 includes a first water outlet 31 connecting the construction section 1. The first water area 3 is a lake, a pond or a river.

[0037] Construct a pilot channel 2 beside the construction section 1. The pilot channel 2 is in parallel with the construction section 1. The pilot channel 2 is an open channel or a closed channel. At the water diversion port between the construction section 1 and the pilot channel 2, a transverse intercepting cofferdam 5 is filled to block the riverbed and hold back water. As Figure 2 shown, that is, the intercepting cofferdams 5 are respectively arranged at the upstream end and the downstream end of the construction section 1 to form a dry construction environment for the construction section 1. The flood control standard of the intercepting cofferdam 5 is once in 10 years. The intercepting cofferdam 5 adopts a steel sheet pile earth-rock cofferdam. The cofferdam body is filled with stone slag and steel sheet piles are driven in for anti-seepage. The water-facing side of the intercepting cofferdam 5 is protected with rubble.

[0038] Among them, the setting process of the intercepting cofferdam 5 includes: using a cutter suction dredger to clean the foundation of the intercepting cofferdam 5. The cutter suction dredger excavates in an orderly manner from top to bottom, and uses real-time kinematic GPS for automatic high-precision positioning. When reaching the section elevation, a sounding instrument is used to measure in large areas to control the dredging thickness; the intercepting cofferdam 5 is filled using the progressive filling method. For the underwater part, self-unloading trucks are used to transport materials to the site, and bulldozers are used to level the materials and put them into the river. After filling out of the water surface, a vibratory roller is used to roll it for multiple times. The filling material is filled to a certain height above the designed top elevation as a reserved settlement amount; the steel sheet piles are vibrated and sunk. During the whole process of pile sinking (inserting and re-driving), it should be ensured that the vibratory hammer, fixture, and steel sheet piles are on the same vertical axis to reduce eccentric pile sinking and reduce the deviation of pile sinking.

[0039] Meanwhile, a transverse diversion cofferdam 6 is filled on the construction section 1 corresponding to the first water outlet 31. The first water outlet 31 is connected to the diversion cofferdam 6. The diversion cofferdam 6 is connected to the pilot channel 2 through a first diversion channel 7. The first diversion channel 7 is arranged in the area between the construction section 1 and the pilot channel 2. The first diversion channel 7 is an open channel or a closed channel.

[0040] In a specific embodiment, the diversion cofferdam 6 includes a dam body 61. Two rows of steel sheet piles 62 are arranged on the dam body 61. The steel sheet piles 62 extend into the rock formation. The fill soil inside the two rows of steel sheet piles 62 is excavated. A steel structure purlin 64 is arranged between the two rows of steel sheet piles 62 for support. A second diversion channel 63 is arranged between the two rows of steel sheet piles 62. The second diversion channel 63 is an open channel or a closed channel. The second diversion channel 63 connects the first water outlet 31 and the pilot channel 2.

[0041] For the rapid diversion structure described in this embodiment, by arranging the diversion cofferdam 6 on the construction section 1 to connect the first water outlet 31 and the pilot channel 2, the water in the first water area 3 is discharged into the pilot channel 2 successively through the first water outlet 31 and the diversion cofferdam 6, avoiding the problem that the water in the first water area 3 overflows into the construction section 1 after the water volume increases, and then a dry construction environment cannot be formed. The rapid diversion structure has a simple structure, convenient construction and good effect.

[0042] Embodiment 2

[0043] As Figures 1 to 3 shown, for the rapid diversion structure described in the present invention, on the basis of Embodiment 1, there is also a second water area 4 beside the construction section 1. The second water area 4 includes a second water outlet 41 connecting the construction section 1. The second water area 4 is a lake, a pond or a river.

[0044] The second water area 4 and the first water area 3 are communicated through a communication port 42. The second water outlet 41 connecting the second water area 4 and the construction section 1 is truncated. Specifically, a concrete pipe is buried at the second water outlet 41, and then the method of pouring concrete is used for plugging and truncating.

[0045] For the situation where there are multiple water areas beside the construction section 1, adopting this structure, multiple water areas are communicated, redundant water outlets are blocked, and only one water outlet is left to be connected to the diversion cofferdam 6, avoiding setting multiple diversion cofferdams 6 in the construction section 1.

[0046] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A rapid flow guiding structure, characterized in that, The invention comprises a construction river section (1) for dry construction, wherein the construction river section (1) has a first water area (3) next to it, the first water area (3) comprises a first water outlet (31) connected to the construction river section (1), a diversion cofferdam (6) is provided on the construction river section (1), the first water outlet (31) is connected to the diversion cofferdam (6), and the diversion cofferdam (6) is connected to a pilot channel (2).

2. The quick flow guiding structure according to claim 1, characterized in that The upstream end and the downstream end of the construction river section (1) are respectively provided with a diversion cofferdam (5).

3. The quick flow guiding structure according to claim 2, characterized in that, The interception cofferdam (5) is a steel sheet pile cofferdam.

4. The quick flow guiding structure according to claim 1, wherein The diversion cofferdam (6) is connected to the pilot channel (2) via a first diversion channel (7), and the first diversion channel (7) is arranged in the area between the construction river section (1) and the pilot channel (2).

5. The quick flow guiding structure according to claim 4, characterized in that, The first diversion channel (7) is an open channel or a concealed channel, and the pilot channel (2) is an open channel or a concealed channel.

6. The rapid flow guiding structure according to claim 1, wherein A second water area (4) is provided beside the construction river section (1), and the second water area (4) is cut off to connect to a second water outlet (41) of the construction river section (1); the second water area (4) and the first water area (3) are connected via a connecting port (42).

7. The quick flow guiding structure according to claim 6, characterized in that, The first water area (3) is a lake, a pond or a river, and the second water area (4) is a lake, a pond or a river.

8. The quick flow guiding structure according to any one of claims 1-7, characterized in that The diversion cofferdam (6) comprises a dam body (61), on which two rows of steel sheet piles (62) are arranged, between which a second diversion channel (63) is located, and the second diversion channel (63) is connected to the first water outlet (31) and the pilot channel (2).

9. The quick flow guiding structure according to claim 8, wherein, The second diversion channel (63) is an open channel or a concealed channel.

10. The rapid flow guiding structure according to claim 8, wherein, A surrounding purlin (64) is provided between the two rows of steel sheet piles (62).

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