CN115288229A - Closed disturbance-free dredging system and dredging method - Google Patents
Closed disturbance-free dredging system and dredging method Download PDFInfo
- Publication number
- CN115288229A CN115288229A CN202211077666.8A CN202211077666A CN115288229A CN 115288229 A CN115288229 A CN 115288229A CN 202211077666 A CN202211077666 A CN 202211077666A CN 115288229 A CN115288229 A CN 115288229A
- Authority
- CN
- China
- Prior art keywords
- dredging
- closed
- grab bucket
- undisturbed
- slide rail
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000005086 pumping Methods 0.000 claims abstract description 13
- 239000010802 sludge Substances 0.000 claims abstract description 11
- 239000002002 slurry Substances 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 108010066057 cabin-1 Proteins 0.000 description 13
- 239000013049 sediment Substances 0.000 description 8
- 230000008901 benefit Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/28—Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
- E02F3/92—Digging elements, e.g. suction heads
- E02F3/9212—Mechanical digging means, e.g. suction wheels, i.e. wheel with a suction inlet attached behind the wheel
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention discloses a closed undisturbed dredging system, which comprises a cylindrical cabin with a closed upper part and an open bottom, wherein a pipeline connected with a mud pumping pipe is arranged in the center of the cabin, the outer side of the pipeline is connected with a dredging device for dredging sludge, and the dredging device comprises: the dredging grab bucket excavating driving device comprises dredging grab buckets uniformly distributed along the circumferential direction of the pipeline and a grab bucket excavating driving device which enables the lower parts of the dredging grab buckets to be outwards opened, downwards excavated and inwards folded; the dredging grab bucket is folded inwards to make the bottom enclose a closed cavity. The invention also discloses a closed undisturbed dredging method. The invention realizes the protection of the water environment and greatly reduces the disturbance operation of the water environment.
Description
Technical Field
The invention relates to a dredging structure and a construction method, in particular to a closed undisturbed dredging system and a dredging method.
Background
At present, the dredging amount of the whole world in recent years reaches billions of cubes, the generated economic amount reaches billions of dollars, the dredging demand reaches sixty-seven billions of cubes only along the coast of China, the market scale reaches billions of dollars, the dredging amount of rivers, lakes and reservoirs in China is nearly two billions of cubes every year, and particularly, the sediment deposition of reservoirs with long running time is more serious. The sedimentation of the silt in the reservoir seriously threatens the self safety of the reservoir and the full play of social benefits and economic benefits such as flood control, irrigation, water supply, power generation and the like. In addition, due to rapid development of socio-economic and destruction of environmental ecosystem, water systems such as lakes and rivers are polluted to various degrees, and thus, the bottom sludge is also a major accumulation site of various pollutants in water.
At present, the main tool for dredging the sediment is a modern dredger, the dredging process can cause the resuspension of the polluted sediment and the reduction of the transparency of a water body, and high-concentration organic matters in the sediment and interstitial water and the like can be diffused along with the polluted sediment, so that the problems of secondary pollution and the like are caused. Although there are also environmental-friendly reamer heads, non-overflow pneumatic dredge pump technologies, etc. developed for the problem of overflow of floating mud in the construction process of a dredger, the current underwater dredging technologies and equipment substantially cause disturbance to the polluted sediment coverage area to a certain extent and have serious energy consumption in continuous operation of a target area.
Disclosure of Invention
The invention provides a closed undisturbed dredging system and a dredging method for solving the technical problems in the prior art.
The technical scheme adopted by the invention for solving the technical problems in the prior art is as follows: the utility model provides a closed undisturbed desilting system, includes the cylinder cabin of upper portion closed bottom open-ended, set up in the cabin center with take out the pipeline of mud union coupling, the pipeline outside is connected with the mud digging device that is used for excavating mud, the mud digging device includes: the dredging grab bucket excavating driving device comprises dredging grab buckets uniformly distributed along the circumferential direction of the pipeline and a grab bucket excavating driving device which enables the lower parts of the dredging grab buckets to be outwards opened, inwards folded and vertically moved; the dredging grab bucket is folded inwards to make the bottom enclose a closed cavity.
Furthermore, the grab bucket excavating driving device comprises double-layer sliding rails and connecting rods, the number of the double-layer sliding rails is matched with that of the dredging grab buckets, and the double-layer sliding rails and the connecting rods are uniformly distributed along the circumferential direction of the pipeline; the double-layer slide rail comprises an inner-layer slide rail, an outer-layer slide rail and a slide rail fixing seat fixedly connected with the pipeline; the sliding rail fixing seat, the inner sliding rail and the outer sliding rail are sequentially connected in a sliding manner; the inner layer slide rail is hinged with the upper end of the connecting rod, the outer layer slide rail is hinged with the upper part of the dredging grab bucket, and the lower end of the connecting rod is fixedly connected with the dredging grab bucket; the radial distance between the connecting point of the lower end of the connecting rod and the dredging grab bucket is larger than the radial distance between the connecting point of the outer layer sliding rail and the upper part of the dredging grab bucket, which is hinged with the upper part of the dredging grab bucket, and the pipeline axis.
Further, the connecting rod is an electric driving telescopic connecting rod; when the telescopic connecting rod is contracted, the lower part of the dredging grab bucket is outwards expanded; when the telescopic connecting rod extends, the lower part of the dredging grab bucket is folded inwards.
Furthermore, the double-layer slide rail is an electric drive double-layer slide rail.
Furthermore, two to four mud grab buckets are uniformly distributed along the circumferential direction of the pipeline.
Furthermore, the dredging grab bucket is divided into an upper part, a middle part and a lower part; the upper surface is an arc-shaped concave curved surface, the middle surface is a cylindrical surface, and the lower surface is a conical surface.
Furthermore, three dredging grab buckets are uniformly distributed along the circumferential direction of the pipeline; the middle part of the dredging grab bucket is in a semi-cylindrical shape, the upper surface of the dredging grab bucket is an arc-shaped concave curved surface formed by rotating an arc-shaped curve for 180 degrees around the axis of the middle part of the dredging grab bucket, and the vertical projection included angles of two side edges of the lower surface of the dredging grab bucket are 120 degrees.
Further, the angle between the lower surface of the dredge grab and the axis of the middle part thereof is 100 degrees.
The invention also provides a closed undisturbed dredging method using the closed undisturbed dredging system, which comprises the following steps:
step 4, controlling a grab bucket excavating driving device to enable the bottom of the excavating grab bucket to keep a closed state and move upwards to an initial height, and starting a slurry pump to pump slurry;
and 5, transferring the closed undisturbed dredging system to the next target area, and repeating the steps 2 to 4.
Further, when the closed undisturbed dredging system is transferred to the next target area, the closed undisturbed dredging system is translated underwater, and simultaneously slurry conveying operation is carried out in the transferring process.
The invention has the advantages and positive effects that: the closed undisturbed dredging system and the dredging method can reduce the disturbance to the polluted sediment, protect the stability of the water environment and improve the dredging efficiency, simply and reliably realize the continuous operation of dredging operation on the premise of ensuring the high-efficiency integrated dredging and dredging of a modern dredger, improve the dredging operation efficiency, realize the protection to the water environment under the closed undisturbed dredging system and greatly reduce the disturbance operation to the water environment. Its advantages are as follows:
1) The cylindrical cabin with the upper part closed and the bottom opened is adopted, so that the operation range of dredging engineering is ensured, and the undisturbed state of the water body and sediment outside the closed cabin is ensured, so that the stability of the water body environment is ensured, and the structure has the advantages of simpler displacement work, smaller restricted operation and strong capability of adapting to the water body environment.
2) The structure of the dredging grab bucket can change the influence of the traditional reamer type on the environmental operation, and the dredging grab bucket excavating driving device also reduces the loss of the dredging grab bucket and can prolong the service life of the dredging grab bucket.
3) The double-layer sliding rail structure can realize outward opening and downward digging of the lower part of the dredging grab bucket, improve the working efficiency of dredging, improve the stability of dredging work and reduce the energy consumption.
Drawings
FIG. 1 is a schematic structural diagram of a closed undisturbed dredging system of the present invention.
Figure 2 is a bottom view of a closed undisturbed dredging system of the present invention.
Fig. 3 is a schematic view of a dredging apparatus according to the present invention.
Fig. 4 is a schematic view of a double-layer sliding rail structure uniformly distributed along the circumferential direction of a pipeline.
FIG. 5 is a schematic view of a grab bucket mechanism with three evenly distributed dredging grab buckets along the circumferential direction of a pipeline.
FIG. 6 is a schematic view showing a state where the lower portion of a grapple for dredging of the present invention is folded inward.
FIG. 7 is a schematic view showing a state where a lower portion of a grab bucket of the sludge excavating device of the present invention is opened outward.
In the figure: 1. a cabin; 2. a mud pumping pipe; 3. a pipeline; 4. a slide rail fixing seat; 5. an inner layer slide rail; 6. an outer slide rail; 7. the upper part of the mud grab bucket; 8. the middle part of the mud digging grab bucket; 9. the lower part of the dredging grab bucket; 10. a connecting rod.
Detailed Description
For further understanding of the contents, features and effects of the present invention, the following embodiments are enumerated in conjunction with the accompanying drawings, and the following detailed description is given:
referring to fig. 1 to 7, a closed undisturbed dredging system comprises a cylindrical chamber 1 with a closed upper part and an open bottom, a pipeline 3 connected with a mud pumping pipe 2 is arranged in the center of the chamber 1, a dredging device for dredging mud is connected to the outer side of the pipeline 3, and the dredging device comprises: the dredging grab bucket is uniformly distributed along the circumferential direction of the pipeline 3, and the grab bucket excavating driving device enables the lower part 9 of the dredging grab bucket to be outwards opened, inwards folded and vertically moved; the dredging grab bucket is folded inwards to make the bottom enclose a closed cavity.
Preferably, the grab bucket excavating driving device can comprise double-layer slide rails and connecting rods 10, the number of the double-layer slide rails is matched with that of the dredging grab buckets, and the double-layer slide rails and the connecting rods are uniformly distributed along the circumferential direction of the pipeline 3; the double-layer slide rail can comprise an inner-layer slide rail 5, an outer-layer slide rail 6 and a slide rail fixing seat 4 fixedly connected with the pipeline 3; the slide rail fixing seat 4, the inner slide rail 5 and the outer slide rail 6 are sequentially connected in a sliding manner; the inner layer slide rail 5 can be hinged with the upper end of a connecting rod 10, the outer layer slide rail 6 can be hinged with the upper part 7 of the dredging grab bucket, and the lower end of the connecting rod 10 can be fixedly connected with the dredging grab bucket; the radial distance between the connecting point of the lower end of the connecting rod 10 and the dredging grab bucket is fixedly connected with the axis of the pipeline 3, and is greater than the radial distance between the connecting point of the outer layer slide rail 6 and the upper part 7 of the dredging grab bucket in a hinged mode and the axis of the pipeline 3; when the outer layer slide rail 6 moves downwards relative to the inner layer slide rail 5, the lower part 9 of the dredging grab bucket can be opened outwards; when the outer slide rail 6 moves upwards relative to the inner slide rail 5, the lower part 9 of the excavating grab can be folded inwards. When the inner layer slide rail 5 slides up and down relative to the slide rail fixing seat 4, the dredging grab bucket can be lifted. When the connecting rod 10 has a fixed length, the outer layer slide rail 6 can move downwards relative to the inner layer slide rail 5, so that the lower part 9 of the dredging grab bucket is opened outwards; the outer layer slide rail 6 moves upwards relative to the inner layer slide rail 5, and the lower part 9 of the dredging grab bucket is folded inwards.
Preferably, the link 10 may be an electrically or pneumatically or hydraulically driven telescopic link; when the telescopic connecting rod is contracted, the outer layer slide rail 6 moves downwards relative to the inner layer slide rail 5; when the telescopic connecting rod extends, the outer layer slide rail 6 moves upwards relative to the inner layer slide rail 5.
Preferably, the double-layer slide rail can be an electric drive or a pneumatic drive or a hydraulic drive double-layer slide rail.
Preferably, two to four dredging grab buckets are evenly distributed along the circumference of the pipeline 3.
Preferably, the dredging grab bucket can be divided into an upper part, a middle part and a lower part; the surface of the upper part 7 of the mud digging grab bucket can be an arc-shaped concave curved surface, the surface of the middle part 8 of the mud digging grab bucket can be a cylindrical surface, and the surface of the lower part 9 of the mud digging grab bucket can be a conical surface.
Preferably, three dredging grab buckets are uniformly distributed along the circumferential direction of the pipeline 3; the middle part of the dredging grab bucket can be in a semi-cylindrical shape, the upper surface of the dredging grab bucket is an arc-shaped concave curved surface formed by rotating an arc-shaped curve for 180 degrees around the axis of the middle part of the dredging grab bucket, and the vertical projection included angle of two side edges of the lower surface of the dredging grab bucket is 120 degrees.
Preferably, the angle of the lower surface of the dredging grab may be 100 ° to its middle axis.
The cabin, the mud pumping pipe, the pipeline, the slide rail fixing seat, the inner slide rail, the outer slide rail, the mud digging grab bucket, the connecting rod and the like can be all made of applicable parts in the prior art or parts and materials in the prior art and assembled and manufactured by adopting conventional technical means.
The invention also provides a closed undisturbed dredging method using the closed undisturbed dredging system, which comprises the following steps:
and step 1, bringing the closed undisturbed dredging system to a target area, stably sinking the closed undisturbed dredging system, and starting dredging after the closed undisturbed dredging system is settled stably.
And 2, controlling the grab bucket excavating driving device to enable the lower part 9 of the excavating grab bucket to be outwards opened and move downwards from the initial height, and stopping after the lower part of the excavating grab bucket is inserted into the sludge for a certain depth.
And 3, controlling the grab bucket excavating driving device to enable the lower part 9 of the excavating grab bucket to fold inwards and move upwards, and stopping when the bottom of the excavating grab bucket encloses a closed cavity.
And 4, controlling the grab bucket excavating driving device to enable the bottom of the excavating grab bucket to keep a closed state and move upwards to an initial height, and starting a slurry pump to pump the slurry.
And 5, transferring the closed undisturbed dredging system to the next target area, and repeating the steps 2 to 4.
Preferably, the closed undisturbed dredging system can be translated under water when being transferred to the next target area, and simultaneously mud conveying operation can be carried out during the transfer process.
The structure and operation of the present invention will be further described in a preferred embodiment of the present invention as follows:
the utility model provides a closed undisturbed desilting system, includes that upper portion seals bottom open-ended cylinder cabin 1, sets up the pipeline 3 of being connected with taking out mud pipe 2 in 1 center in the cabin, and the 3 outsides of pipeline are connected with the mud dredging device who is used for excavating mud, and the mud dredging device includes: the dredging grab bucket is uniformly distributed along the circumferential direction of the pipeline 3, and the grab bucket excavating driving device enables the lower part 9 of the dredging grab bucket to be outwards opened, inwards folded and vertically moved; the dredging grab bucket is folded inwards to make the bottom enclose a closed cavity.
The grab bucket excavating driving device comprises double-layer sliding rails and connecting rods 10, the number of the double-layer sliding rails is matched with that of the dredging grab buckets, and the double-layer sliding rails and the connecting rods are uniformly distributed along the circumferential direction of the pipeline 3; the double-layer slide rail comprises an inner-layer slide rail 5, an outer-layer slide rail 6 and a slide rail fixing seat 4 welded with the pipeline 3; the slide rail fixing seat 4, the inner slide rail 5 and the outer slide rail 6 are sequentially connected in a sliding manner; the inner-layer slide rail 5 slides up and down relative to the slide rail fixing seat 4; the outer slide rail 6 slides up and down relative to the inner slide rail 5.
The inner-layer slide rail 5 is hinged with the upper end of a connecting rod 10, the outer-layer slide rail 6 is hinged with the upper part 7 of the dredging grab bucket, and the lower end of the connecting rod 10 is fixedly connected with the dredging grab bucket; the radial distance between the connecting point of the lower end of the connecting rod 10 and the dredging grab bucket is fixedly connected with the axis of the pipeline 3, and is greater than the radial distance between the connecting point of the outer layer slide rail 6 and the upper part 7 of the dredging grab bucket, which is hinged with the axis of the pipeline 3.
The connecting rod 10 is an electric driving telescopic connecting rod; when the telescopic connecting rod is contracted, the outer layer slide rail 6 moves downwards relative to the inner layer slide rail 5; when the telescopic connecting rod extends, the outer layer slide rail 6 moves upwards relative to the inner layer slide rail 5. The double-layer slide rail is an electric drive double-layer slide rail.
The inner-layer slide rail 5 is static relative to the slide rail fixing seat 4, the outer-layer slide rail 6 of the double-layer slide rail can be driven to lift, and the telescopic connecting rod is matched to act to assist in enabling the lower part 9 of the dredging grab bucket to be opened outwards or closed inwards.
The outer-layer slide rail 6 is made to be static relative to the inner-layer slide rail 5, the inner-layer slide rail 5 is made to descend relative to the slide rail fixing seat 4, and the dredging grab bucket can move downwards and extend into mud; the inner layer slide rail 5 is made to ascend relative to the slide rail fixing seat 4, so that the dredging grab bucket can move upwards to be convenient for the mud pumping pipe 2 to pump mud.
In the preferred embodiment, a hole is formed in the center of a closed cabin 1, a pipeline 3 connected with a mud pumping pipe 2 is welded, the diameter of the closed cabin 1 is D, the height of the closed cabin 1 is H, the diameter of the mud pumping pipe 2 is matched with that of the hole, and the diameter D of the mud pumping pipe 2 can be selected to be 0.1D. The pipe 3 extending into the closed compartment 1 has a length H =5/9H.
As shown in fig. 4, three double-layer sliding rails are installed on the pipe wall of the pipeline 3 extending into the closed cabin 1, the double-layer sliding rails are uniformly distributed along the circumferential direction of the pipeline 3, the interval angle takes the axis of the pipeline 3 as an axis, and the centers of the adjacent sliding rails are spaced by 120 degrees.
FIG. 5 is a schematic view of a dredging grab bucket, which can be divided into an upper part, a middle part and a lower part; the upper surface can be an arc-shaped concave curved surface, the middle surface can be a cylindrical surface, and the lower surface can be a conical surface. The wall thickness of the upper part 7 of the dredging grab bucket is thickened, the middle part is in a semi-cylindrical shape, and the surface of the lower part and the axis of the middle part form an included angle of 100 degrees.
The number of the mud digging grab buckets is three, and the vertical projection included angle of two side edges of the surface of the lower part 9 of each mud digging grab bucket is 120 degrees. When the three dredging grab bucket structures are closed, 360-degree included angles are formed.
Fig. 6 is a schematic view showing a state where the lower portion 9 of the grapple for dredging of the present invention is folded inward. The axis of the telescopic connecting rod and the axis of the double-layer slide rail form an included angle of 30 degrees, and the three telescopic connecting rods are uniformly distributed along the circumferential direction of the pipeline 3.
In this embodiment: the diameter of the closed cabin 1 is 5m, the height is 4.5m, the wall thickness is 0.01m, the upper surface of the closed cabin 1 is closed, the lower cover is removed, a pipeline 3 for connecting a mud pumping pipe 2 is welded at the position of the center origin of the upper part of the closed cabin 1, the diameter of the opening is 0.5m, therefore, the diameter of the pipeline 3 penetrating into the closed cabin 1 is 0.5m, the wall thickness is 0.01m, and the length of the pipeline 3 penetrating into the closed cabin 1 is 2.5m;
a sliding rail fixing seat 4 is arranged on the wall of the pipeline 3, which is 0.7m away from the upper end of the pipeline 3, the sliding rail fixing seat 4 is 0.2m long, 1.2m wide and 0.1m thick, a sliding groove with the length of 0.08m, the width of 1.08m and the depth of 0.04m is arranged in the middle of the sliding rail fixing seat 4, an inner sliding rail 5 is arranged below the sliding rail fixing seat 4 and 0.4m away from the upper end of the sliding rail fixing seat 4, the length of the inner sliding rail 5 is 0.4m, the width of 1.3m and the thickness of 0.1m, and a sliding groove with the length of 0.1m, the width of 0.4m and the depth of 0.05m is arranged in the middle of the inner sliding rail 5; an outer-layer slide rail 6 is arranged below the inner-layer slide rail 5 and 0.325m away from the upper end of the inner-layer slide rail, and the outer-layer slide rail 6 is 0.6m long, 0.15m wide and 0.05m thick.
The wall thickness of the upper part 7 of the dredging grab bucket is thickened, the thickness is 0.3m, the middle part is in a semi-cylindrical shape, and the radius is 0.9m.
A preferred embodiment of a closed undisturbed dredging method using the closed undisturbed dredging system comprises the following steps:
1) The closed cabin 1, the double-layer slide rails, the telescopic connecting rods, the dredging grab bucket and the pipeline 3 are manufactured and assembled, the two parts are installed and prefabricated on land into a whole, the pipeline 3 is connected with a mud suction pipe through a flange, and the closed undisturbed dredging system is installed on a mud suction ship.
2) The closed undisturbed dredging system is brought to a target area through the suction dredger, the structure body is stably sunk, and the dredging operation can be started after the structure body is settled stably.
3) The outer layer slide rail 6 is controlled to slide downwards, the telescopic connecting rod is controlled to contract, the three dredging grab bucket structures are in a lower-part opening state at the moment, the inner layer slide rail 5 of the double-layer slide rail is controlled to slide downwards when the dredging grab bucket structures are opened to the maximum angle, and the dredging grab bucket stops sliding after being inserted into sludge for a certain depth.
4) The extension of the telescopic connecting rod is controlled, and the outer layer slide rail 6 is controlled to slide upwards. At the moment, the lower parts 9 of the three dredging grab buckets are folded inwards, when the bottom parts of the three dredging grab buckets enclose a closed cavity, the inner-layer sliding rails 5 of the double-layer sliding rails are controlled to slide upwards, and when the dredging grab buckets are lifted to the position above the sludge, a slurry pump is started to pump the sludge.
5) When the sludge is conveyed, the closed cabin 1 can be translated to the next target area.
And then the processes 2), 3) and 4) are repeated, namely, the processes of translating the cabin 1 and pumping and conveying the sludge are carried out simultaneously in the construction process of the closed undisturbed dredging structure.
The above-mentioned embodiments are only for illustrating the technical idea and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and to implement the present invention accordingly, but not to limit the scope of the present invention by only the embodiments, i.e. all equivalent changes or modifications made within the spirit of the present invention disclosed in the present invention still fall within the scope of the present invention.
Claims (10)
1. The utility model provides a closed undisturbed desilting system which characterized in that, includes the cylinder cabin of upper portion closed bottom open-ended, set up in the cabin center with take out the pipeline of mud union coupling, the pipeline outside is connected with the mud dredging device who is used for excavating mud, the mud dredging device includes: the dredging grab bucket excavating driving device comprises dredging grab buckets uniformly distributed along the circumferential direction of the pipeline and a grab bucket excavating driving device which enables the lower parts of the dredging grab buckets to be outwards opened, inwards folded and vertically moved; the dredging grab bucket is folded inwards to make the bottom enclose a closed cavity.
2. The closed undisturbed dredging system of claim 1 wherein the grab bucket excavating drive comprises double-layer slide rails and connecting rods, the number of which is matched with that of the dredging grab buckets and which are evenly distributed along the circumference of the pipeline; the double-layer slide rail comprises an inner-layer slide rail, an outer-layer slide rail and a slide rail fixing seat fixedly connected with the pipeline; the slide rail fixing seat, the inner slide rail and the outer slide rail are sequentially connected in a sliding manner; the inner-layer slide rail is hinged with the upper end of the connecting rod, the outer-layer slide rail is hinged with the upper part of the dredging grab bucket, and the lower end of the connecting rod is fixedly connected with the dredging grab bucket; the radial distance between the connecting point of the lower end of the connecting rod and the dredging grab bucket is larger than the radial distance between the connecting point of the outer layer slide rail and the upper part of the dredging grab bucket, which is hinged with the pipeline.
3. The closed, undisturbed dredging system of claim 2 wherein the linkage is an electrically driven telescopic linkage; when the telescopic connecting rod is contracted, the lower part of the dredging grab bucket is outwards expanded; when the telescopic connecting rod extends, the lower part of the dredging grab bucket is folded inwards.
4. The closed undisturbed dredging system of claim 2 wherein the double slide is a motor driven double slide.
5. The closed undisturbed dredging system of claim 1 wherein there are two to four grab buckets evenly spaced circumferentially around the pipe.
6. The closed undisturbed dredging system of claim 1 wherein the dredge grab is divided into an upper section, a middle section and a lower section; the upper surface is an arc-shaped concave curved surface, the middle surface is a cylindrical surface, and the lower surface is a conical surface.
7. The closed undisturbed dredging system of claim 6 wherein three grab buckets are evenly spaced circumferentially along the pipe; the middle part of the dredging grab bucket is in a semi-cylindrical shape, the upper surface of the dredging grab bucket is an arc-shaped concave curved surface formed by rotating an arc-shaped curve for 180 degrees around the axis of the middle part of the dredging grab bucket, and the vertical projection included angle of two side edges of the lower surface of the dredging grab bucket is 120 degrees.
8. The closed, undisturbed dredging system of claim 6 wherein the angle of the lower surface of the dredging grab to its central axis is 100 °.
9. A closed undisturbed dredging method using the closed undisturbed dredging system of any one of claims 1 to 8, characterized in that the method comprises the steps of:
step 1, installing a closed undisturbed dredging system on land as a whole and on a suction dredger, and connecting a mud pumping pipe through a flange;
step 1, bringing the closed undisturbed dredging system to a target area, stably sinking the closed undisturbed dredging system, and starting dredging after the closed undisturbed dredging system is settled stably;
step 2, controlling a grab bucket excavating driving device to enable the lower part of the excavating grab bucket to be outwards opened and move downwards from the initial height, and stopping after the lower part of the excavating grab bucket is inserted into sludge for a certain depth;
step 3, controlling a grab bucket excavating driving device to enable the lower part of the dredge grab bucket to fold inwards and move upwards, and stopping when the bottom of the dredge grab bucket encloses a closed cavity;
step 4, controlling a grab bucket excavating driving device to enable the bottom of the excavating grab bucket to keep a closed state and move upwards to an initial height, and starting a slurry pump to pump slurry;
and 5, transferring the closed undisturbed dredging system to the next target area, and repeating the steps 2 to 4.
10. The closed undisturbed dredging process of claim 9 wherein the closed undisturbed dredging system is translated under water while the slurry is being transported during the transfer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211077666.8A CN115288229B (en) | 2022-09-05 | 2022-09-05 | Closed disturbance-free dredging system and dredging method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211077666.8A CN115288229B (en) | 2022-09-05 | 2022-09-05 | Closed disturbance-free dredging system and dredging method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115288229A true CN115288229A (en) | 2022-11-04 |
| CN115288229B CN115288229B (en) | 2023-12-01 |
Family
ID=83833953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211077666.8A Active CN115288229B (en) | 2022-09-05 | 2022-09-05 | Closed disturbance-free dredging system and dredging method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115288229B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116397713A (en) * | 2023-05-12 | 2023-07-07 | 北京金河生态科技有限公司 | Underwater environment-friendly obstacle clearing device, system and method |
| CN116575533A (en) * | 2023-07-13 | 2023-08-11 | 山西一建集团有限公司 | Dredging device for dredging river and dredging method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005030135A (en) * | 2003-07-10 | 2005-02-03 | Nishimatsu Constr Co Ltd | Dredging device and dredging method by use of grab bucket |
| CN102226346A (en) * | 2011-04-07 | 2011-10-26 | 上海交通大学 | Extrusion grab bucket for continuous desilting |
| CN107059970A (en) * | 2016-11-11 | 2017-08-18 | 浙江水利水电学院 | The cleaning plant and its method for cleaning of a kind of lake silt |
| CN110761349A (en) * | 2019-09-16 | 2020-02-07 | 陕西理工大学 | River channel dredging grab bucket device |
| CN111719617A (en) * | 2020-06-24 | 2020-09-29 | 天津大学 | Underwater bottom mud closed dredging device and method |
-
2022
- 2022-09-05 CN CN202211077666.8A patent/CN115288229B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005030135A (en) * | 2003-07-10 | 2005-02-03 | Nishimatsu Constr Co Ltd | Dredging device and dredging method by use of grab bucket |
| CN102226346A (en) * | 2011-04-07 | 2011-10-26 | 上海交通大学 | Extrusion grab bucket for continuous desilting |
| CN107059970A (en) * | 2016-11-11 | 2017-08-18 | 浙江水利水电学院 | The cleaning plant and its method for cleaning of a kind of lake silt |
| CN110761349A (en) * | 2019-09-16 | 2020-02-07 | 陕西理工大学 | River channel dredging grab bucket device |
| CN111719617A (en) * | 2020-06-24 | 2020-09-29 | 天津大学 | Underwater bottom mud closed dredging device and method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116397713A (en) * | 2023-05-12 | 2023-07-07 | 北京金河生态科技有限公司 | Underwater environment-friendly obstacle clearing device, system and method |
| CN116397713B (en) * | 2023-05-12 | 2024-02-06 | 北京河沐生态科技有限公司 | Underwater environment-friendly obstacle clearing device, system and method |
| CN116575533A (en) * | 2023-07-13 | 2023-08-11 | 山西一建集团有限公司 | Dredging device for dredging river and dredging method thereof |
| CN116575533B (en) * | 2023-07-13 | 2023-09-12 | 山西一建集团有限公司 | Dredging device for dredging river and dredging method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115288229B (en) | 2023-12-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115288229B (en) | Closed disturbance-free dredging system and dredging method | |
| CN109736702B (en) | Drilling platform for amphibious operation | |
| CN109610500B (en) | Long-short multi-barrel negative pressure jacket offshore wind power foundation structure and construction method thereof | |
| CN104912144A (en) | Multifunctional dredge boat | |
| CN110965571A (en) | Negative pressure barrel-pile composite foundation structure and construction method thereof | |
| WO2023202614A1 (en) | Rotary excavation drill head and amphibious tunnel construction robot using same | |
| CN113062388A (en) | Unmanned cutter suction beam-jet type amphibious walking dredging equipment | |
| CN111038652A (en) | Multifunctional engineering ship | |
| CN211735480U (en) | Negative pressure barrel-pile composite foundation structure | |
| CN218506092U (en) | C-shaped assembly type floating transportation structure for split floating transportation of offshore substation | |
| CN102409711B (en) | Urban small river dredging ship | |
| CN109944287B (en) | Dredging operation system under wharf | |
| CN110439048B (en) | Hydraulic punching cutter suction equipment and method for inner support foundation pit engineering | |
| CN109610501B (en) | Long-short multi-bucket negative pressure pile barrel type offshore wind power foundation structure and construction method thereof | |
| CN208415348U (en) | A kind of deep water dredging vehicle | |
| CN112726705B (en) | Submersible environment treatment robot applicable to various forms | |
| CN204875911U (en) | Multi -functional dredger | |
| CN212175828U (en) | Embedded pile periphery leaking stoppage structure for bottom-sealing-free steel hanging box | |
| CN109372047B (en) | Three-cable positioning system suitable for cutter suction dredger | |
| CN216920350U (en) | Hanging scaffold formula open caisson entry driving machine | |
| CN211642530U (en) | Multifunctional engineering ship | |
| CN210887375U (en) | Inland river mud blowing boat | |
| GB2350326A (en) | Method of recovering material from the seabed | |
| CN216892596U (en) | Trap type flexible dredging device | |
| DK181073B1 (en) | Method for constructing an offshore construction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |