Sand cushion layer filling construction method

Abstract

This invention relates to a method for constructing a sand cushion layer, comprising a positioning frame, a positioning barge for positioning the positioning frame, a sand-throwing vessel for sand throwing, and a depth gauge for measuring water depth. The positioning frame is equipped with multiple precision throwing zones. This method, through the precise subdivision of the sand cushion layer throwing area by the positioning frame, controls the throwing time of the sand-throwing vessel in each precision throwing zone, thereby achieving accurate control over the thickness and uniformity of the sand cushion layer, improving throwing accuracy, reducing throwing thickness deviation, and lowering construction costs.

Description

Technical Field

[0001] This invention relates to the field of filling technology, and in particular to a method for filling sand cushion layers. Background Technology

[0002] With the continuous development of the social economy and supported and driven by multiple factors, the dredging industry has a promising future, with reclamation projects experiencing sustained growth, bringing unprecedented opportunities to construction companies. At the same time, increasingly stringent quality requirements for filling and increasingly demanding environmental protection requirements have had a significant impact on traditional construction techniques, posing new technical challenges to dredging construction companies. For sand cushion layer filling projects with high precision requirements, the conventional sand cushion layer filling construction process suffers from poor construction accuracy and large deviations in filling thickness, requiring significant time and cost for subsequent refilling and leveling. Furthermore, the conventional sand cushion layer filling construction process inevitably leads to overfilling, which can easily cause phenomena such as silt seepage from deep silt layers, thus increasing the corresponding foundation treatment costs. Summary of the Invention

[0003] The purpose of this invention is to provide a sand cushion layer filling construction method that can improve filling accuracy, reduce filling thickness deviation, and lower construction costs.

[0004] To achieve the objective of this utility model, the technical solution adopted is as follows:

[0005] A sand cushion layer dumping construction system includes a positioning frame, a positioning barge for positioning the positioning frame, a sand dumping vessel for dumping sand, and a water depth measuring instrument for measuring water depth. The positioning frame is provided with multiple fine dumping zones.

[0006] During construction, the system first divides the entire construction area into zones using a positioning frame as the construction unit. The positioning frame is then moved to the required construction position via a positioning barge. A depth gauge measures the water depth before sand dumping for each fine-layer shoveling zone. Based on the required sand cushion layer thickness, the water depth before sand dumping, the size of the fine-layer shoveling zone, and the sand dumping efficiency of the sand dumping vessel, the required sand dumping time for each zone is calculated. The sand dumping vessel then dumps sand into each zone according to the required time. After sand dumping, the water depth after sand dumping is measured again using a depth gauge. The sand cushion layer thickness for each zone is calculated based on the water depth before and after sand dumping. If the calculated results meet the sand cushion layer thickness design requirements, the positioning frame is moved to the next position via the positioning barge, and the above steps are repeated until the sand cushion layer filling for the entire construction area is completed. If the calculated results do not meet the sand cushion layer thickness design requirements, the fine-layer shoveling zones that do not meet the thickness requirements are supplemented with sand until the design requirements are met. This system uses a positioning frame to precisely subdivide the sand cushion layer filling area, controls the filling time of the sand dumping vessel in each fine filling zone, and achieves accurate control over the filling thickness and uniformity of the sand cushion layer, thereby improving filling accuracy, reducing filling thickness deviation, and lowering construction costs.

[0007] The technical solution is further explained below:

[0008] Furthermore, multiple staggered pull ropes are installed within the positioning frame to form precision polishing zones. By pulling these ropes within the positioning frame, multiple precision polishing zones can be created, simplifying operation and facilitating adjustments.

[0009] Furthermore, at least one layer of screen is installed within the positioning frame, dividing it into multiple fine-spraying zones. The screen within the positioning frame effectively neutralizes the potential energy of the sand before it enters the water, ensuring more uniform underwater spreading and strictly controlling the thickness and range of the fill.

[0010] Furthermore, the screen has multiple layers, arranged evenly at intervals from top to bottom. These multiple layers of screen more effectively neutralize the potential energy of the sand, resulting in a more uniform underwater spread of the sand.

[0011] Furthermore, the sand cushion layer sand-throwing construction system also includes anti-fouling curtains, which are arranged around the positioning frame. With anti-fouling curtains installed around the positioning frame, the turbid water generated after the sand falls into the positioning frame is controlled within the frame, preventing the sand from falling onto the water surface and causing large-scale turbid water, thus effectively protecting the environment.

[0012] Furthermore, the sand cushion layer placement system also includes a drive unit that can extend and retract the antifouling curtain vertically. Depending on water depth and tide levels, the drive unit adjusts the distance between the antifouling curtain and the seabed, resulting in better antifouling performance and greater adaptability.

[0013] Furthermore, the sand-throwing vessel is equipped with a dustproof cloth at the sand-throwing port. This reduces the amount of sand flying through the air and further protects the environment.

[0014] Furthermore, the sand-dredging vessel is a belt-driven sand-dredging vessel.

[0015] This invention also provides a method for constructing a sand cushion layer, which involves using the aforementioned sand cushion layer construction system and includes the following steps:

[0016] a. Divide the entire construction area into zones using the positioning frame as the construction unit, and determine the construction path;

[0017] b. Position the positioning frame at the beginning of the construction path using a positioning barge;

[0018] c. Measure the water depth before sand throwing in each fine sand throwing zone using a water depth measuring device;

[0019] d. Calculate the sand-casting time required for each fine-casting zone based on the required sand cushion layer thickness, water depth before sand-casting, size of the fine-casting zone, and sand-casting efficiency of the sand-casting vessel.

[0020] e. The sand-dredging vessel dries sand in each fine sand-dredging zone according to the required dredging time for each fine sand-dredging zone;

[0021] f. After sand throwing is completed, the water depth of each fine sand throwing zone is measured using a water depth measuring device.

[0022] g. Calculate the sand cushion layer thickness for each fine blasting zone based on the water depth before and after sand blasting; if the calculated results all meet the sand cushion layer thickness requirements, proceed to step h; if the calculated results do not meet the sand cushion layer thickness requirements, repeat steps d to g for the fine blasting zones that do not meet the sand cushion layer thickness requirements.

[0023] h. Move the positioning frame to the next position on the construction path using the positioning barge, and repeat steps c to g until the sand cushion layer of the entire construction area is filled.

[0024] This method uses a positioning frame to strictly subdivide the sand cushion layer filling area and control the filling time of the sand dumping vessel in each fine filling zone, thereby achieving accurate control of the sand cushion layer filling thickness and uniformity, improving filling accuracy, reducing filling thickness deviation, and lowering construction costs.

[0025] Furthermore, the positioning barge is equipped with a DGPS dual-antenna beacon, with one antenna used for positioning and the other for determining the azimuth. The corner coordinates of the positioning frame are output via Hypack model ship auxiliary software, and the positioning frame is moved to the designated position by controlling the barge's anchor cable system. By installing measuring equipment and navigation software on the positioning barge, accurate guidance of the dumping location is achieved, further improving dumping accuracy.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] This invention uses a positioning frame to precisely subdivide the sand cushion layer filling area, controlling the filling time of the sand-pouring vessel in each fine-pouring zone. This achieves accurate control over the thickness and uniformity of the sand cushion layer, improving filling accuracy, reducing filling thickness deviation, and lowering construction costs. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the sand cushion layer filling construction system according to an embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of the first structure of the sand-throwing positioning frame according to the first embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the second structure of the sand-throwing positioning frame according to the second embodiment of the present invention.

[0031] Figure 4 for Figure 3 View from direction A;

[0032] Figure 5 for Figure 3 View from direction B;

[0033] Figure 6 This is a schematic flowchart of the sand cushion layer filling construction method according to an embodiment of the present invention;

[0034] Figure 7 This is a schematic diagram of the zoning and construction path of the entire construction area in an embodiment of the present invention.

[0035] Explanation of reference numerals in the attached figures:

[0036] 10. Positioning frame, 110. Fine-spraying zone, 120. Pull rope, 130. Anti-fouling curtain, 131. Load-bearing object, 141. Connecting pipe, 142. Flange, 150. Reinforcing beam, 160. Anti-collision component, 170. Screen, 180. Inclined plate, 190. Drive device, 191. Support frame, 192. Wire rope, 20. Positioning barge, 30. Sand-throwing vessel, 40. Construction area, 50. Construction path. Detailed Implementation

[0037] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings:

[0038] like Figure 1 As shown, a sand cushion layer filling construction system includes a positioning frame 10, a positioning barge 20 for positioning the positioning frame 10, a sand-throwing vessel 30 for throwing sand, and a water depth measuring instrument (not shown in the figure) for measuring water depth. The positioning frame 10 is provided with multiple fine throwing zones 110.

[0039] During construction, such as Figure 1 and Figure 7 As shown, the entire construction area 40 is first divided into sections using the positioning frame 10 as the construction unit. The positioning frame 10 is then moved to the required construction position using the positioning barge 20. The water depth before sand dumping in each fine sand dumping section 110 is measured using a depth gauge. Then, based on the required sand cushion layer thickness, the water depth before sand dumping, the size of the fine sand dumping section 110, and the sand dumping efficiency of the sand dumping vessel 30, the required sand dumping time for each fine sand dumping section 110 is calculated. The sand dumping vessel 30 then dumps sand into each fine sand dumping section 110 according to the required sand dumping time. Once sand dumping is completed... The water depth after sand dumping in each fine-dumping zone 110 is then measured using a depth gauge. Based on the water depth before and after sand dumping, the sand cushion layer thickness for each fine-dumping zone 110 is calculated. If the calculated results meet the design requirements for sand cushion layer thickness, the positioning frame 10 is moved to the next position using the positioning barge 20, and the above steps are repeated until the sand cushion layer filling of the entire construction area 40 is completed. If the calculated results do not meet the design requirements for sand cushion layer thickness, the fine-dumping zones 110 that do not meet the thickness requirements are supplemented with additional sand until the design requirements are met. This system, through the positioning frame 10, strictly subdivides the sand cushion layer filling area and controls the dumping time of the sand dumping vessel 30 in each fine-dumping zone 110, achieving accurate control of the sand cushion layer filling thickness and uniformity, improving filling accuracy, reducing filling thickness deviation, and lowering construction costs.

[0040] In this embodiment, the sand-throwing vessel 30 is a belt-driven sand-throwing vessel, and a dustproof cloth is installed at the sand-throwing port to reduce the sand from flying in the air and further protect the environment.

[0041] When designing the positioning frame 10, its dimensions should take into account factors such as the length of the positioning barge 20 and the sand-throwing efficiency of the sand-throwing vessel 30.

[0042] like Figure 2 As shown, in the first embodiment, multiple ropes 120 are arranged in an alternating manner to form fine polishing zones 110 inside the positioning frame 10. By pulling the ropes 120 inside the positioning frame 10, multiple fine polishing zones 110 are formed, which is simple to operate and easy to adjust.

[0043] In the first embodiment, 24 precision polishing zones 110 are formed by multiple vertically interlaced pull ropes 120, such as... Figure 2 As shown, there are three parallel pull ropes 120 arranged horizontally, and four parallel pull ropes 120 arranged vertically. Assembly is simple and the pull ropes 120 are easy to adjust, making operation more flexible. The fine polishing zone 110 can also be formed in other ways according to actual needs, and the number of pull ropes 120 and fine polishing zone 110 can also be adjusted according to actual needs.

[0044] A dirt curtain 130 is installed around the positioning frame 10. After sand falls into the positioning frame 10, the resulting turbid water is controlled within the frame, preventing the sand from creating a large area of ​​turbid water on the water surface, thus effectively protecting the environment. To reduce the displacement of the dirt curtain 130 with the water flow during use, a weight, such as a steel plate, is tied below the dirt curtain 130 to ensure that the generated turbid water is controlled within the area where the frame is located, effectively protecting the environment.

[0045] like Figure 2 As shown, the positioning frame 10 includes multiple connecting pipes 141 that are connected end to end to form a frame structure. Adjacent connecting pipes 141 are connected by flanges 142, which facilitates the installation and disassembly of the positioning frame 10. The connecting pipes 141 are hollow structures, which makes the buoyancy of the positioning frame 10 in water better and the construction more convenient.

[0046] like Figure 2 As shown, a reinforcing beam 150 is installed inside the positioning frame 10. The reinforcing beam 150 is located in the middle of the positioning frame 10, dividing the positioning frame 10 into two parts. The reinforcing beam 150 enhances the overall strength of the positioning frame 10 and improves its service life. The reinforcing beam 150 is also assembled from multiple connecting pipes 141 with flanges 142 at their interfaces. Both ends of the reinforcing beam 150 are also connected to the positioning frame 10 via flanges 142.

[0047] In this embodiment, both the connecting pipe 141 and the pull rope 120 are made of rust-proof and corrosion-resistant materials, which extends the service life of the positioning device and reduces maintenance costs.

[0048] like Figure 2 The sand-throwing positioning device shown also includes a collision protection component 160, which is disposed on the outer periphery of the positioning frame 10 to prevent the positioning frame 10 from colliding with the positioning barge 20 during construction, thereby avoiding injury and improving safety.

[0049] In the first embodiment, there are multiple anti-collision components 160, all of which are located on one side of the outer frame along its length. The anti-collision components 160 are tires, which provide good anti-collision performance and facilitate waste utilization. The number and material of the anti-collision components 160 can be set differently according to actual needs, and the anti-collision components 160 can also be set at different positions on the positioning frame 10.

[0050] Unlike the embodiments described above, in the second embodiment, the structure of the positioning frame 10 is as follows: Figures 3 to 5 As shown, at least one layer of screen 170 is set inside the positioning frame 10. Before the sand enters the water, the potential energy of the sand is effectively offset by the screen 170, so that the sand is spread more evenly underwater, and the filling thickness and filling range are strictly controlled.

[0051] like Figure 4 As shown, the screen 170 has four layers, which are evenly spaced from top to bottom. The multiple layers of screen 170 effectively counteract the potential energy of the sand, making the sand spread more evenly underwater. The screen 170 can also be set with more than one layer as needed.

[0052] like Figure 5 As shown, the screen 170 is divided into multiple fine polishing zones 110, and adjacent fine polishing zones 110 are marked with different colors to better distinguish the different fine polishing zones 110, making the construction more precise and efficient.

[0053] In the second embodiment, the screen 170 is divided into two rows of polishing zones 110, each row of polishing zones 110 is provided with six polishing zones 110, and the screen 170 can also be divided into different numbers of polishing zones 110 according to actual needs.

[0054] like Figure 3 As shown, the positioning frame 10 is surrounded by baffles (not shown in the attached diagram). Sand falling into the positioning frame 10 is filtered through a screen 170. Turbid water generated during the process is blocked by the baffles, further preventing large-scale turbidity from forming after the sand falls onto the water surface, effectively protecting the environment. Furthermore, as... Figures 3 to 5 As shown, the upper part of the baffle is provided with inclined plates 180 extending upward and outward. The inclined plates 180 surround to form a funnel mouth with the larger end facing upward, to prevent the sand from falling into the screen 170 and popping out of the frame, thus ensuring the filling effect.

[0055] like Figures 3 to 5 As shown, the upper end of the anti-fouling curtain 130 is connected to the bottom of the positioning frame 10. During the process of sand passing through the screen 170 and falling to the bottom of the water, the anti-fouling curtain 130 blocks the turbid water. A weight 131 is connected to the lower end of the anti-fouling curtain 130 to reduce the amount of displacement caused by the water flow during use, ensuring that the generated turbid water is controlled within the area of ​​the positioning frame 10, effectively protecting the environment.

[0056] like Figures 3 to 5 As shown, the sand-throwing positioning device also includes a drive device 190, which can drive the antifouling curtain 130 to extend and retract vertically. According to the water depth and tide level, the drive device 190 can adjust the distance between the antifouling curtain 130 and the seabed to make the antifouling effect better and the adaptability stronger.

[0057] In the second embodiment, as Figure 3 As shown, the drive device 190 is a hand-operated hoist. A support frame 191 for placing the drive device 190 is provided on the positioning frame 10. The hand-operated hoist controls the contraction and expansion of the sewage curtain through a wire rope 192, making operation simple and labor-saving. The drive device 190 can also adopt other manual or automatic drive methods according to actual needs.

[0058] To extend the service life of the sand-throwing positioning device, components such as the positioning frame 10, screen 170, and baffle 180 are all made of corrosion-resistant and rust-proof materials.

[0059] This invention also provides a method for constructing a sand cushion layer, which is carried out using the aforementioned sand cushion layer construction system, such as... Figure 6 As shown, the specific steps include:

[0060] a. such as Figure 7 As shown, the entire construction area 40 is divided into sections using the positioning frame 10 as the construction unit, and the construction path 50 is determined.

[0061] b, such as Figure 1 As shown, the positioning frame 10 is positioned at the starting position of the construction path 50 by the positioning barge 20;

[0062] c. Measure the water depth before sand throwing in each fine sand throwing zone 110 using a water depth measuring device;

[0063] d. Calculate the sand-throwing time required for each fine sand-throwing zone 110 based on the required sand cushion layer thickness, water depth before sand-throwing, size of fine sand-throwing zone 110, and sand-throwing efficiency of sand-throwing vessel 30.

[0064] e. For example Figure 1 As shown, the sand-throwing vessel 30 throws sand into each fine sand-throwing zone 110 according to the sand-throwing time required for each fine sand-throwing zone 110;

[0065] f. After sand throwing is completed, the water depth of each fine sand throwing zone 110 is measured using a water depth measuring device.

[0066] g. Calculate the sand cushion layer thickness of each fine blasting zone 110 based on the water depth before and after sand blasting; if the calculated results all meet the sand cushion layer thickness requirements, proceed to step h; if the calculated results do not meet the sand cushion layer thickness requirements, repeat steps d to g for the fine blasting zone 110 that does not meet the sand cushion layer thickness requirements.

[0067] h. Move the positioning frame 10 to the next position on the construction path 50 using the positioning barge 20, and repeat steps c to g until the sand cushion layer of the entire construction area 40 is filled.

[0068] This method uses the positioning frame 10 to strictly subdivide the sand cushion layer filling area and control the filling time of the sand dumping vessel 30 in each fine filling zone 110, thereby achieving accurate control of the filling thickness and uniformity of the sand cushion layer, improving filling accuracy, reducing filling thickness deviation, and lowering construction costs.

[0069] In this embodiment, the positioning barge 20 is equipped with a DGPS dual-antenna beacon, with one antenna used for positioning and the other for determining the azimuth. The corner coordinates of the positioning frame 10 are output via Hypack model ship auxiliary software, and the positioning frame 10 is moved to the designated position by controlling the anchor cable system of the positioning barge 20. By installing measuring equipment and navigation software on the positioning barge 20, accurate guidance of the dumping location is achieved, further improving dumping accuracy. Other measuring equipment and navigation software can also be installed on the positioning barge 20 as needed.

[0070] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A method for constructing a sand cushion layer, characterized in that, Construction is carried out using a sand cushion layer dumping construction system, which includes a positioning frame, a positioning barge for positioning the positioning frame, a sand dumping vessel for dumping sand, and a depth measuring instrument for measuring water depth. The positioning frame is equipped with multiple precision dumping zones, and the specific steps include: a. Divide the entire construction area into zones using the positioning frame as the construction unit, and determine the construction path; b. Position the positioning frame at the beginning of the construction path using a positioning barge; c. Measure the water depth before sand throwing in each fine sand throwing zone using a water depth measuring device; d. Calculate the sand-throwing time required for each fine-throwing zone based on the required sand cushion layer thickness, water depth before sand-throwing, size of the fine-throwing zone, and sand-throwing efficiency of the sand-throwing vessel. e. The sand-dredging vessel dries sand in each fine sand-dredging zone according to the required dredging time for each fine sand-dredging zone; f. After sand throwing is completed, the water depth of each fine sand throwing zone is measured using a water depth measuring device. g. Calculate the sand cushion layer thickness for each fine blasting zone based on the water depth before and after sand blasting; if the calculated results all meet the sand cushion layer thickness requirements, proceed to step h; if the calculated results do not meet the sand cushion layer thickness requirements, repeat steps d to g for the fine blasting zones that do not meet the sand cushion layer thickness requirements. h. Move the positioning frame to the next position on the construction path using the positioning barge, and repeat steps c to g until the sand cushion layer of the entire construction area is filled.

2. The sand cushion layer filling construction method according to claim 1, characterized in that, The positioning barge is equipped with a DGPS dual-antenna beacon, with one antenna used for positioning and the other for determining the azimuth. The corner coordinates of the positioning frame are output through Hypack ship model auxiliary software, and the positioning frame is moved to the designated position by controlling the anchor cable system of the positioning barge.

3. The sand cushion layer filling construction method according to claim 1, characterized in that, The positioning frame contains multiple interlaced pull ropes that form the precision polishing zones.

4. The sand cushion layer filling construction method according to claim 1, characterized in that, The positioning frame is provided with at least one layer of screen, which is divided into multiple fine polishing zones.

5. The sand cushion layer filling construction method according to claim 4, characterized in that, The screen has multiple layers, and the multiple layers of screen are arranged at even intervals from top to bottom.

6. The sand cushion layer filling construction method according to claim 1, characterized in that, It also includes a dirt-proof curtain, which is arranged around the perimeter of the positioning frame.

7. The sand cushion layer filling construction method according to claim 6, characterized in that, It also includes a drive device that can drive the anti-fouling curtain to extend and retract vertically.

8. The sand cushion layer filling construction method according to claim 1, characterized in that, The sand-throwing vessel is equipped with a dustproof cloth at the sand-throwing port.

9. The sand cushion layer filling construction method according to any one of claims 1 to 8, characterized in that, The sand-throwing vessel is a belt-driven sand-throwing vessel.

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