CN220725151U - A row's mud field cofferdam water return mouth structure for river course dredging operation - Google Patents

Abstract

The utility model provides a water outlet structure of a cofferdam of a mud discharging field for river dredging operation; comprises a water return channel, a water return pipe, a vertical shaft and a plurality of mud baffle components; the vertical shaft is arranged in the mud discharging field, the lower end of the vertical shaft is fixed in the mud discharging field, a cavity is formed in the vertical shaft, a plurality of through holes into which water flows are formed in the upper part of the vertical shaft, the mud blocking component comprises mud guards, floating bins and two side sliding rails, the sliding rails on the two sides of the corresponding through holes are fixed at the edges of the vertical shaft, the sliding rails move up and down, the two sides of the mud guards are respectively matched with the sliding rails, the floating bins are fixedly connected to the end face of the mud guards at one side far away from the cavity of the vertical shaft, and independent closed floating cavities are formed in the floating bins; the initial end of the water return pipe extends into the lower part of the vertical well, the tail end of the water return pipe penetrates through the cofferdam of the mud discharging field and extends to the diversion canal, and the water return pipe is arranged on the upper side of the diversion canal. All parts are detachably connected, so that the whole device can be conveniently detached and recycled, and the device can be repeatedly used, and has the advantages of economy and reliability when being used in a sludge discharge field with high hydraulic filling strength and high capacity.

Description

A row's mud field cofferdam water return mouth structure for river course dredging operation

Technical Field

The utility model relates to the technical field of hydraulic engineering, in particular to a cofferdam water return port structure of a mud discharging field for river dredging operation.

Background

The underwater earth dredging and dredging engineering in inland waterways and riverways generally adopts a mode of combining dredging and hydraulic filling by a conventional dredger. At present, most inland river dredging projects adopt cutter suction dredgers or bucket wheel dredgers for construction, and the cutter suction dredger has the advantages of high efficiency, good quality, low cost and long and near row spacing, and is particularly suitable for projects with discrete mud throwing areas.

For a dredged and filled mud throwing area, a water outlet is the most critical and difficult to control; the selection of the form of the water withdrawal port is also the most important link for the whole hydraulic reclamation area. The proper water outlet is selected, so that the engineering construction efficiency can be improved, and the potential safety hazard of operation engineering can be reduced; the improper selection easily causes large construction back siltation, slow consolidation and poor flatness of a hydraulic reclamation area, and even can influence the water seepage and collapse of the whole weir body, thereby causing serious engineering accidents and adverse social effects.

However, the existing water withdrawal port has the following disadvantages:

(1) The mud guard of the existing water withdrawal port can control the flow of water flowing into the vertical shaft, but the height of the mud guard cannot be automatically adjusted along with the lowering of the water level of a mud discharge field, so that the height of the mud guard needs to be manually adjusted in time, time and labor are wasted, and special observation is needed;

(2) The existing water outlet structure is of a disposable structure, and cannot be recycled after being built.

The utility model of application number CN201821139472.5 discloses a water return system adopting a derrick type water return port with a steel structure, which mainly comprises a channel steel frame, a mud guard, a water return pipe, an energy dissipation tank and a water return channel, wherein the channel steel frame is fixed by a channel steel through a horizontal support and a scissor support to form a column frame, a water tank is arranged on the channel steel frame, 1m of channel steel is reserved below the bottom end of the water tank, the mud guard is arranged in the channel steel groove of the channel steel frame above the water tank, one end of the water return pipe is inserted into an opening, the other end of the water return pipe penetrates through a cofferdam and extends into the energy dissipation tank, and one side, far away from the cofferdam, of the energy dissipation tank is provided with the water return channel.

However, the water outlet of the above patent cannot solve the technical problem that the height of the mudguard cannot be automatically adjusted, and cannot solve the technical problem that the mudguard cannot be recycled after being built.

Disclosure of Invention

1. Technical problem to be solved by the utility model

The utility model aims to provide a water outlet structure of a cofferdam of a mud discharging field for river dredging operation, which solves the problems in the prior art:

(1) How to enable the height of the mud guard to be automatically adjusted along with the lowering of the water level of the mud discharging field, and the height of the mud guard does not need to be manually adjusted in time;

(2) How to improve the existing water return port structure, so that the whole water return port can be recycled.

2. Technical proposal

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a cofferdam water return opening structure of a mud discharging field for river dredging operation;

comprises a water return channel, a water return pipe, a vertical shaft and a plurality of mud baffle components;

the vertical shaft is arranged in the mud discharging field, the lower end of the vertical shaft is fixed in the mud discharging field, the upper end of the vertical shaft extends out of the upper side of the liquid level of the mud discharging field, a cavity is arranged in the vertical shaft, a plurality of through holes for water supply flow to flow in are arranged at the upper part of the vertical shaft,

the mud guard assemblies are in one-to-one correspondence with a plurality of through holes of the vertical shaft, each mud guard assembly comprises a mud guard, a floating bin and two side sliding rails, the two side sliding rails are fixed at the edges of the vertical shaft at the two sides of the corresponding through hole, the trend of each sliding rail is in the vertical direction, the two sides of the mud guard are respectively matched with the sliding rails, the floating bin is fixedly connected to the end face of the mud guard at one side far away from the cavity of the vertical shaft, an independent closed floating cavity is arranged in the floating bin, and the horizontal height of the upper end face of the mud guard under the action of the floating bin is lower than the liquid level;

the beginning end of the water return pipe extends into the lower part of the vertical well, the tail end of the water return pipe penetrates through the cofferdam of the mud discharging field and extends to the diversion canal, and the water return pipe is arranged on the upper side of the diversion canal.

As the optimization of the cofferdam water return opening structure of the mud discharging field for river dredging operation, the water return pipe comprises a vertical pipe section, a bent pipe section and an inclined pipe section, wherein the vertical pipe section is positioned in a vertical shaft cavity, the lower end of the vertical pipe section is connected with the starting end of the inclined pipe section through the bent pipe section, and the starting end of the inclined pipe section is lower than the tail end of the inclined pipe section.

As the optimization of the cofferdam water return opening structure of the mud discharging field for river dredging operation, the inclined pipe section comprises a plurality of inclined pipe bodies, the plurality of inclined pipe bodies are sequentially and linearly arranged, and two adjacent inclined pipe bodies are fixed in a sealing manner.

As the optimization of the cofferdam water return opening structure of the sludge discharge field for river dredging operation, the vertical pipe section, the bent pipe section and the inclined pipe bodies are detachably connected through bolts.

As the preferable selection of the cofferdam water return port structure of the mud discharging field for river dredging operation, the balance weight for adjusting the buoyancy of the floating bin is arranged in the floating bin.

As the optimization of the cofferdam water return opening structure of the sludge discharge field for river dredging operation, the upper part of a vertical shaft cavity is closed with the upper port of a water return pipe.

3. Advantageous effects

After the structure is adopted, a cofferdam structure is adopted at a cofferdam water outlet of the mud discharging field, namely, the flow of water flow is limited by building a wall body with a certain height. The cofferdam structure can effectively control water flow and improve the safety of hydraulic engineering;

the water return port structure of the cofferdam of the mud discharging field for river dredging operation is provided with the through holes, and is matched with the mud guard to enable water to flow out smoothly, so that the water flow speed and the water level can be effectively controlled, and the water is prevented from flowing too much or too little. The mud guard is kept at a certain height relative to the lower side of the liquid level by overcoming gravity through the floating bin, impurities such as sediment are intercepted in the cofferdam, and the influence on the downstream environment is reduced.

The water return port structure of the cofferdam of the dredging operation of the river channel has the advantages of low manufacturing cost, high safety, detachable connection among all parts, convenience for the whole device to be detached and recovered, repeated utilization and more obvious economic and reliable advantages when used in a dredger with larger hydraulic filling strength and larger capacity.

Drawings

Fig. 1 is a view showing a state of use of an embodiment of a water withdrawal structure of a sludge discharge yard cofferdam for river dredging operation.

Fig. 2 is a cross-sectional view of a schematic diagram of a shaft, a mud blocking assembly and a part of a water return pipe in an embodiment of a cofferdam water return structure of a mud discharging field for river dredging operation.

Fig. 3 is a cross-sectional view taken along A-A of fig. 2.

The reference numerals in the figures illustrate:

a shaft-1; a through hole-12; a fender-21; a floating bin-22; a float chamber-22 a; a counterweight-22 b; a slide rail-23; a water return pipe-3; a vertical tube section-31; bending a pipe section-32; an inclined tube body-33 a; cofferdam-4; a water return channel-5; and a mud discharging field-6.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit or scope of the utility model, which is therefore not limited to the specific embodiments disclosed below.

The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Please refer to fig. 1 to 3.

The cofferdam water return opening structure of the mud discharging field for river dredging operation comprises a water return channel 5, a water return pipe 3, a vertical shaft 1 and four groups of mud blocking components.

The horizontal cross section shape of the vertical shaft 1 is generally square, the vertical shaft 1 is arranged in the mud discharging field 6, the lower end of the vertical shaft 1 is fixed on the mud discharging field 6, the upper end of the vertical shaft 1 extends out of the upper side of the liquid level of the mud discharging field 6, a cavity is formed in the vertical shaft 1, and four through holes 12 for water supply flow to flow in are respectively formed in the upper parts of four side walls of the vertical shaft 1.

Four mud guard assemblies and four through-holes 12 one-to-one of shaft 1 correspond, and the mud guard assembly includes mud guard 21, floats storehouse 22 and both sides slide rail 23, and the shaft 1 edge in corresponding through-hole 12 both sides is fixed to both sides slide rail 23, slide rail 23 trend is the upper and lower direction, and mud guard 21 both sides respectively with slide rail 23 cooperation, float storehouse 22 fixed connection on the terminal surface of keeping away from shaft 1 cavity one side mud guard 21, be equipped with independent confined in the float storehouse 22 and float chamber 22a, receive the up end horizontal height of float storehouse 22 effect mud guard 21 to be less than liquid level height, float storehouse 22 inside to have placed the counter weight 22b of adjusting the buoyancy of float storehouse 22.

The water return pipe 3 comprises a vertical pipe section 31, a bent pipe section 32 and an inclined pipe section, the vertical pipe section 31 is positioned in a cavity of the vertical shaft 1, the upper end of the vertical pipe section 31 is sealed with the cavity of the upper part of the vertical shaft 1, the lower end of the vertical pipe section 31 is connected with the initial end of the inclined pipe section through the bent pipe section 32, the initial end of the inclined pipe section is lower than the tail end of the inclined pipe section, the tail end of the inclined pipe section penetrates through the sludge discharge field 6, the cofferdam 4 extends to the diversion canal, and the water return pipe 3 is positioned on the upper side of the diversion canal.

The inclined pipe section comprises a plurality of inclined pipe bodies 33a, the plurality of inclined pipe bodies 33a are sequentially arranged in a straight line, and two adjacent inclined pipe bodies 33a are fixed in a sealing mode. The vertical tube section 31, the bent tube section 32 and the plurality of inclined tube bodies 33a are detachably connected by bolts, and the vertical tube section 31, the bent tube section 32 and the plurality of inclined tube bodies 33a are matched with each other by sealing rings.

When in use, water flows out smoothly through the through hole 12 which is blocked by the mud guard 21, so that the water flow speed and the water level can be effectively controlled, and the water is prevented from flowing too much or too little. The mud guard 21 is kept at a certain height relative to the lower side of the liquid level by overcoming gravity through the floating bin 22, impurities such as sediment are intercepted in the cofferdam 4, and the influence on the downstream environment is reduced.

The foregoing is merely one embodiment of the utility model, and it should be noted that variations and modifications could be made by those skilled in the art without departing from the principles of the utility model, which would also be considered to fall within the scope of the utility model.

Claims (6)

1. A sediment outflow field cofferdam water return port structure for river course dredging operation, characterized by:

comprises a water return channel (5), a water return pipe (3), a vertical shaft (1) and a plurality of mud baffle components;

the vertical shaft (1) is arranged in the mud discharging field (6), the lower end of the vertical shaft (1) is fixed in the mud discharging field (6), the upper end of the vertical shaft (1) extends out of the upper side of the liquid level of the mud discharging field (6), a cavity is formed in the vertical shaft (1), and a plurality of through holes (12) for water supply flow to flow in are formed in the upper part of the vertical shaft (1);

the mud guard assembly is in one-to-one correspondence with a plurality of through holes (12) of the vertical shaft (1), the mud guard assembly comprises mud guard plates (21), floating bins (22) and two side sliding rails (23), the two side sliding rails (23) are fixed at the edges of the vertical shaft (1) on two sides of the corresponding through holes (12), the trend of each sliding rail (23) is in the vertical direction, two sides of each mud guard plate (21) are respectively matched with the corresponding sliding rail (23), the floating bins (22) are fixedly connected to the end faces of the mud guard plates (21) on one side far away from the cavity of the vertical shaft (1), independent closed floating cavities (22 a) are arranged in the floating bins (22), and the upper end face level of each mud guard plate (21) is lower than the liquid level under the action of the floating bins (22);

the beginning end of the water return pipe (3) stretches into the lower part of the vertical shaft (1), the tail end of the water return pipe (3) penetrates through the cofferdam (4) of the mud discharging field (6) and stretches to the diversion channel, and the water return pipe (3) is positioned on the upper side of the diversion channel.

2. The mud field cofferdam water return opening structure for river dredging operation according to claim 1, wherein:

the water return pipe (3) comprises a vertical pipe section (31), a bent pipe section (32) and an inclined pipe section, the vertical pipe section (31) is positioned in a cavity of the vertical shaft (1), the lower end of the vertical pipe section (31) is connected with the starting end of the inclined pipe section through the bent pipe section (32), and the starting end of the inclined pipe section is lower than the tail end of the inclined pipe section in height.

3. The mud field cofferdam water return opening structure for river dredging operation according to claim 2, wherein:

the inclined pipe section comprises a plurality of inclined pipe bodies (33 a), the plurality of inclined pipe bodies (33 a) are sequentially arranged in a straight line, and two adjacent inclined pipe bodies (33 a) are fixed in a sealing mode.

4. A dredging operation sludge discharge site cofferdam water outlet structure as claimed in claim 3, wherein:

the vertical pipe section (31), the bent pipe section (32) and the plurality of inclined pipe bodies (33 a) are detachably connected through bolts.

5. The mud field cofferdam water return opening structure for river dredging operation according to claim 1, wherein:

a counterweight (22 b) for adjusting the buoyancy of the floating bin (22) is arranged in the floating bin (22).

6. The mud field cofferdam water return opening structure for river dredging operation according to claim 1, wherein:

the upper part of the cavity of the vertical shaft (1) is sealed with the upper port of the water return pipe (3).