Construction method for rapid land formation through hydraulic reclamation
By optimizing pipeline connections, controlling fill elevation, selecting suitable sand and soil, and constructing drainage channels, the problem of rapid land formation when the cofferdam is lower than the fill elevation was solved, and efficient fill construction results were achieved.
Patent Information
- Application Number
- CN202510996652.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-18
- Publication Date
- 2025-10-17
AI Technical Summary
Under special working conditions, the cofferdam construction speed cannot meet the progress requirements, resulting in the inability to quickly form land in some areas of the filling area. Especially when the cofferdam is lower than the filling elevation, how to achieve filling to form land higher than the cofferdam.
The method of slowing down the frequency of pipeline connection, controlling the filling elevation with pipe heads, selecting suitable sand and soil materials, constructing smooth drainage channels and dynamic leveling is adopted. In combination with the use of long-distance straight mud discharge pipelines, flexible rubber tube connections, medium sand or medium-fine sand with low mud content, cutter suction dredgers and pumping equipment, the mud and water separation and consolidation are ensured through segmented and layered filling, dynamic leveling and drainage by pumps.
When the cofferdam elevation is insufficient, land nearly 1 meter higher than the cofferdam elevation can be blown out, which improves the construction progress and efficiency, ensures the quality and efficiency of the blowing and filling construction, and avoids mud overflow and equipment blockage.
Smart Images
Figure CN120797607A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of blowing filling technology, in particular to a blowing filling rapid land formation construction method. BACKGROUND
[0002] In recent years, with the increasing demand for construction land in China, reclamation and sand blowing are widely used in coastal areas to create farmland. People use dredging slurry in river channels, lakes and harbor basins as blowing filling materials to create land, achieving the purpose of dredging, reclamation and land creation. The general process of reclamation and land creation engineering is to blow the dredged material of the dredged port channel to a low-lying area, and then to reinforce it to form a land area.
[0003] Traditional blowing filling construction generally follows the principle that the cofferdam elevation is higher than the blowing filling land formation area elevation. In special working conditions, the cofferdam construction speed cannot meet the progress requirements, and at the same time, it is required to quickly form land in some areas of the blowing filling area, i.e. how to blow fill the land higher than the cofferdam under the condition that the cofferdam is lower than the blowing filling elevation. SUMMARY
[0004] The present application is to solve the problems in the prior art and provides a blowing filling rapid land formation construction method.
[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:
[0006] A blowing filling rapid land formation construction method, comprising the following steps:
[0007] S1: reducing the frequency of pipeline connection and optimizing the pipeline connection;
[0008] S2: controlling the blowing elevation by high pipe head;
[0009] S3: selecting sand material to dynamically blow fill the mud material to accelerate consolidation;
[0010] S4: using water hook mechanism to build smooth drainage channel to accelerate mud-water separation;
[0011] S5: dynamically flattening the top of the blowing filling mud material.
[0012] Preferably, the step S1 is specifically operated as follows:
[0013] A long-distance, straight mud discharge pipeline is used to reduce the number of mud discharge pipeline bends and connections and to prolong the single blowing operation time;
[0014] The rubber pipe is used to flexibly connect the floating pipe and the shore pipe to enhance the pipeline's ability to adapt to the change of tidal level and to reduce the connection demand caused by water level fluctuation.
[0015] Preferably, the step S2 is specifically operated as follows:
[0016] Adjusting the height of the blowing material at the outlet of the sludge discharge pipe, and then adjusting the falling position of the blowing material, so that the blowing material is locally accumulated;
[0017] The blowing material is segmented and layered, and the lowest layer of blowing material is 0.5-1m above the water level, and each subsequent layer of blowing material is 1m higher.
[0018] Preferably, the step S3 is specifically operated as follows:
[0019] The sand source is controlled, and medium sand or medium fine sand with a mud content of ≤10% is used to ensure the drainage and consolidation speed of the blowing material;
[0020] Taking advantage of the characteristics of self-weight accelerated consolidation of coarse sand, the blowing coarse-grained soil is selected as the bottom foundation, and then the blowing fine-grained soil is layered on the top.
[0021] High-strength earthwork cutting is performed using a cutter suction dredger, and the lump-shaped mud cake is directly blown.
[0022] Preferably, the step S4 is specifically operated as follows:
[0023] The inlet of the sludge pipeline is away from the drainage port, the slurry flow is extended to increase the flow distance of the blowing material, and the blowing material has enough time to separate the water;
[0024] After each layer of blowing material is blown, a temporary drainage ditch is set up to speed up the drainage and consolidation of the top surface layer;
[0025] Water pumping equipment is set up to pump water in the blowing material, accelerating the consolidation of the blowing material.
[0026] Preferably, the step S5 is specifically operated as follows:
[0027] The sludge discharge position of the sludge pipe port is adjusted to ensure the uniformity of each layer of blowing material;
[0028] Mechanical equipment is used to assist in flattening the top of the blowing material, and the blowing surface is flattened in real time to eliminate local pits. The mechanical equipment at least includes one of a bulldozer or a screed.
[0029] Preferably, the water pumping equipment includes a water pump, a connecting pipe connected to the water pumping end of the water pump, and a plurality of water pumping pipes provided on the connecting pipe, and each water pumping pipe is vertically inserted into the blowing material.
[0030] Preferably, a first filter hole is formed in the water pumping pipe, a filter part is sleeved outside the water pumping pipe, and the filter part includes a gauze bag and a filter filler provided in the gauze bag for intercepting sand.
[0031] Preferably, the filter part is provided with a plurality of connecting rings along its length direction, the connecting rings are rotationally connected outside the water pumping pipe, a connecting rod is arranged between adjacent two connecting rings, and a positioning screw is arranged between the connecting ring at the top of the filter part and the water pumping pipe.
[0032] Preferably, a sleeve for covering the filter part is arranged outside the connecting ring, the sleeve is connected with the water pumping pipe through a support rod, a plurality of second filter holes are formed in the sleeve, a filter screen is rotationally arranged on the inner wall of the sleeve at each group of second filter holes, and a rotating pipe rotationally connected with the inner wall of the sleeve is connected between adjacent two filter screens, and the rotating pipe is fixedly connected with the connecting rod.
[0033] Compared with the prior art, the application provides a quick land formation construction method by blowing fillings, which has the following beneficial effects:
[0034] 1. The quick land formation construction method by blowing fillings adopts the process of slowing down the frequency of connecting the blowing filling pipeline, increasing the height of the pipe head, using suitable sand, smoothing the drainage channel and leveling, so that land with a height of nearly 1 meter higher than the cofferdam elevation is formed under the condition that the cofferdam elevation is insufficient, thereby facilitating the improvement of the blowing filling construction progress and ensuring the blowing filling construction efficiency.
[0035] 2. The quick land formation construction method by blowing fillings is provided with a filter part outside the water pumping pipe, so as to intercept and filter the sand in the water, filter the sand in the water, prevent the water pumping pipe and the water pump from being easily blocked, and ensure the continuous pumping of the blowing fillings.
[0036] 3. The quick land formation construction method by blowing fillings is provided with a filter part outside the water pumping pipe, so as to adjust the filter part outside the first filter hole, avoid the filter part outside the first filter hole from reducing the water efficiency due to the continuous filtering of the sand in the water, ensure the water pumping efficiency of the water pumping pipe for the blowing fillings, and accelerate the consolidation of the blowing fillings.
[0037] 4. The quick land formation construction method by blowing fillings is provided with a sleeve outside the filter part, so as to protect the gauze bag of the filter part, avoid the gauze bag from being inserted into the blowing fillings or being in abutment with the hard stone in the blowing fillings when rotating relative to the water pumping pipe, prevent the gauze bag from being damaged and causing the filter filling inside the gauze bag to fall off, and affect the filtering effect of the filter part on the sand in the water, thereby ensuring the water pumping quality. BRIEF DESCRIPTION OF DRAWINGS
[0038] Figure 1 The flowchart of the application;
[0039] Figure 2 The structural schematic view of the water pumping equipment of the application;
[0040] Figure 3 The external structural schematic view of the water pumping pipe of the application;
[0041] Figure 4 Structure diagram of the top of the water pumping pipe of the present application;
[0042] Figure 5 Structure diagram of the top of the water pumping pipe of the present application;
[0043] Figure 6 Structure diagram of the top of the water pumping pipe of the present application; Figure 5 Structure diagram of the top of the water pumping pipe of the present application;
[0044] Figure 7 Structure diagram of the top of the water pumping pipe of the present application;
[0045] Figure 8 Structure diagram of the top of the water pumping pipe of the present application;
[0046] In the figure: 1, water pump; 2, connecting pipe; 3, water pumping pipe; 301, first filter hole; 4, filter part; 401, gauze bag; 402, filter filler; 5, connecting ring; 501, connecting rod; 6, positioning screw; 7, sleeve pipe; 701, second filter hole; 702, filter screen; 703, rotating pipe. DETAILED DESCRIPTION
[0047] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application; obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application, and all other embodiments obtained by those skilled in the art without creative labor on the basis of the embodiments in the present application shall fall within the scope of protection of the present application.
[0048] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0049] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be understood broadly, for example, "connected" can be fixedly connected, or detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, can be internal communication of two elements; for those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0050] As shown in Figure 1 The present embodiment proposes a method for rapid land formation by hydraulic filling, comprising the following steps: S1: reducing the frequency of pipeline connection and optimizing pipeline connection; S2: controlling the hydraulic filling elevation by high pipe head; S3: selecting suitable sand soil material to dynamically fill the hydraulic filling mud to speed up consolidation; S4: using water hook mechanism to build smooth drainage channel to speed up mud-water separation; S5: dynamically flattening the top of the hydraulic filling mud.
[0051] By using the process of reducing the frequency of pipeline connection + high pipe head + suitable sand soil + smooth drainage channel + flattening, the present application finally forms land with an elevation of nearly 1 meter higher than the cofferdam elevation under the condition of insufficient cofferdam elevation, which facilitates to improve the construction progress of hydraulic filling and ensure the efficiency of hydraulic filling construction.
[0052] As shown in Figure 1 As a preferred embodiment, on the basis of the above-mentioned mode, further, the specific operation of step S1 for reducing the frequency of pipeline connection and optimizing pipeline connection is as follows:
[0053] The mud discharge pipeline is optimized, long-distance and straight mud discharge pipeline is used to reduce the bending and connection times of the mud discharge pipeline and prolong the single hydraulic filling operation time.
[0054] The rubber pipe is used to flexibly connect the floating pipe and the shore pipe to enhance the adaptability of the pipeline to the tidal level change and reduce the connection demand caused by water level fluctuation.
[0055] As shown in Figure 1 As a preferred embodiment, on the basis of the above-mentioned mode, further, the specific operation of step S2 for controlling the hydraulic filling elevation by high pipe head is as follows:
[0056] The hydraulic filling height of the mud discharge pipe outlet to the hydraulic filling material is adjusted, and then the material falling position of the hydraulic filling material is adjusted, the sand soil is blown to a higher position by using the kinetic energy of the mud slurry, and local accumulation is formed.
[0057] The hydraulic filling material is filled in segments and layers, the lowest layer of the hydraulic filling material is 0.5-1m above the water level, and then each layer of the hydraulic filling material is increased by 1m in height, so as to avoid mud slurry overflow from the cofferdam.
[0058] AsFigure 1 As shown in the preferred embodiment, on the basis of the above-mentioned mode, further, the specific operation of step S3 selecting suitable sandy soil material to dynamically fill the hydraulic fill material to accelerate the consolidation is:
[0059] Controlling the sand source, using medium sand or medium fine sand with a silt content of ≤10%, to ensure the drainage and consolidation speed of the hydraulic fill material and reduce the risk of silt capsule formation;
[0060] Taking advantage of the characteristics of self-weight accelerated consolidation of coarse sand, selecting hydraulic fill coarse-grained soil as the bottom foundation to enhance the bearing capacity of the foundation, and then covering the hydraulic fill fine-grained soil on the upper side in layers;
[0061] Using a cutter suction dredger to perform high-strength earthwork cutting to produce lump-shaped mud cakes for direct hydraulic filling. It should be noted that a large cutter suction dredger with a single-ship capacity of 4500m 3 / h should be used to form a continuous sand supply chain with a self-propelled drag suction ship, breaking through the traditional cofferdam limit on the speed of hydraulic filling.
[0062] As shown in the preferred embodiment, on the basis of the above-mentioned mode, further, the specific operation of step S4 constructing smooth drainage channels to accelerate the separation of mud and water is: Figure 1
[0063] Moving the mud discharge pipeline inlet away from the drainage outlet, extending the mud flow process to increase the flow distance of the hydraulic fill material, so that the hydraulic fill material has enough time to separate mud and water;
[0064] Setting a temporary drainage ditch after each layer of hydraulic fill material is completed to accelerate the drainage and consolidation of the top surface layer of the layer, preventing water accumulation from softening the foundation;
[0065] Setting a water pumping device to pump water from the hydraulic fill material to accelerate the consolidation of the hydraulic fill material.
[0066] As shown in the preferred embodiment, on the basis of the above-mentioned mode, further, the specific operation of step S5 dynamically flattening the top of the hydraulic fill material is: Figure 1
[0067] Adjusting the mud discharge position of the mud discharge pipeline end regularly, with an adjustment interval of 20-80m each time, to ensure the uniformity of the hydraulic filling of each layer of hydraulic fill material;
[0068] Cooperating with mechanical equipment to assist in flattening the top of the hydraulic fill material, flattening the hydraulic fill surface in real time to eliminate local pits. It should be noted that the mechanical equipment at least includes one of a bulldozer or a screed.
[0069] As shown in the preferred embodiment, on the basis of the above-mentioned mode, further, the specific operation of step S5 dynamically flattening the top of the hydraulic fill material is: Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, as a preferred embodiment, on the basis of the above-mentioned mode, further, the water pumping device comprises the water pump 1, the connecting pipe 2 connected with the water pumping end of the water pump 1, and a plurality of water pumping pipes 3 arranged on the connecting pipe 2, each of the water pumping pipes 3 is vertically inserted into the hydraulic fill;
[0070] The water pumping pipe 3 is inserted into the hydraulic fill, the water pump 1 is controlled to operate, the water body in the hydraulic fill is sequentially introduced into the water pump 1 through the water pumping pipe 3 and the connecting pipe 2, and then is discharged through the water discharging end of the water pump 1, so as to facilitate the water in the hydraulic fill to be pumped, the water content of the hydraulic fill is reduced, and then the hydraulic fill is rapidly solidified, and the construction efficiency of the hydraulic fill land formation is accelerated;
[0071] It should be noted that the water pumping pipe 3 is provided with a first filter hole 301, and a filter part 4 is arranged outside the water pumping pipe 3, the filter part 4 comprises a gauze bag 401 and a filter filler 402 arranged in the gauze bag 401 and used for intercepting the sand and soil; the filter part 4 arranged outside the water pumping pipe 3 can intercept the sand and soil in the pumped water body, the gauze bag 401 is made of any water-permeable material such as a fiber resin mesh bag and gauze, and the filter filler 402 is selected from any filler capable of blocking the sand and soil in the water from passing through the first filter hole 301, such as small-diameter gravel, the gravel is tightly abutted, the water can pass through the gap between the gravel and enter the water suction port, and the sand and soil is retained in the gravel.
[0072] As shown in Figure 3 , Figure 4 , Figure 5 and Figure 6 , as a preferred embodiment, on the basis of the above-mentioned mode, further, the filter part 4 is provided with a plurality of connecting rings 5 along the length direction thereof, the connecting rings 5 are rotationally connected outside the water pumping pipe 3, a connecting rod 501 is arranged between adjacent two connecting rings 5, and a positioning screw 6 is arranged between the connecting ring 5 located at the top of the filter part 4 and the water pumping pipe 3;
[0073] The staff can rotate the connecting ring 5 outside the water pumping pipe 3 by loosening the positioning screw 6, the connecting ring 5 drives the gauze bag 401 to rotate through the connecting rod 501, then the positioning screw 6 is used to fix the connecting ring 5 and the water pumping pipe 3 again, the filter part 4 outside the first filter hole 301 can be adjusted, the water permeation efficiency of the filter part 4 outside the first filter hole 301 is prevented from being reduced due to the continuous filtration of the sand and soil in the water, and thus the continuous water pumping efficiency of the water pumping pipe 3 on the hydraulic fill is ensured, and the solidification of the hydraulic fill is accelerated.
[0074] As shown in Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, as a preferred embodiment, on the basis of the above mode, further, a sleeve 7 for covering the filter part 4 is arranged outside the connecting ring 5, the sleeve 7 is connected with the water pumping pipe 3 through a support rod, a plurality of second filter holes 701 are arranged on the sleeve 7, a filter screen 702 is rotatably arranged on the inner wall of the sleeve 7 at each group of second filter holes 701, a rotating pipe 703 connected with the inner wall of the sleeve 7 is arranged between two adjacent filter screens 702, and the rotating pipe 703 is fixedly connected with the connecting rod 501;
[0075] By arranging the sleeve 7 outside the filter part 4, the mesh bag 401 of the filter part 4 is protected, so that when the mesh bag 401 is inserted into the blowing filler or rotates relative to the water pumping pipe 3, the mesh bag 401 is prevented from being abutted by the hard stone blocks in the blowing filler, so that the mesh bag 401 is not damaged and the filter filler 402 in the mesh bag 401 is not dropped, the filtering effect of the filter part 4 on the sand in the water body is not affected, and the water quality is ensured. The water body pumped by the water pumping pipe 3 passes through the second filter holes 701 of the sleeve 7 and is filtered by the filter part 4, and then enters the water pumping pipe 3. The filter screen 702 initially intercepts and filters the blowing filler such as sand and stone outside the sleeve 7. When the connecting ring 5 drives the filter part 4 to rotate, the connecting rod 501 drives the filter screen 702 to rotate synchronously, the position of the filter screen 702 at the second filter hole 701 is changed, the filter screen originally at the second filter hole 701 is prevented from being blocked, the water pumping efficiency of the water pumping pipe 3 on the blowing filler is ensured, and the consolidation of the blowing filler is accelerated.
[0076] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can make equivalent replacement or change according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.
Claims
1. A method for rapid land filling construction, characterized in that: The following steps are involved: S1: Reduce the frequency of pipeline takeover and optimize pipeline connections; S2: Possessing high pipe head to control filling elevation; S3: Select sand material to dynamically blow the fill material to accelerate consolidation; S4: Use the water hook machine to build a smooth drainage channel to accelerate the separation of mud and water; S5: Dynamically level the top of the blown fill material.
2. A method for rapid land filling construction according to claim 1, characterized in that: The specific operations of step S1 are: Use long, straight mud discharge pipelines to reduce the number of bends and pipe connections, thus extending the time of a single blow-fill operation. The floating pipe and the shore pipe are flexibly connected through rubber tubes to enhance the pipeline's ability to adapt to changes in tide levels and reduce the need for connecting pipes due to water level fluctuations.
3. A rapid land filling construction method according to claim 1, characterized in that: The specific operations of step S2 are: Adjust the blowing height of the blown filler at the outlet of the mud discharge pipe, and then adjust the drop position of the blown filler to make the blown filler accumulate locally; The blown filler is blown in sections and layers. The bottom layer of blown filler is 0.5-1m higher than the water level, and then each layer of blown filler is raised layer by layer by 1m.
4. A rapid land filling construction method according to claim 1, characterized in that: The specific operations of step S3 are: Control the sand source and use medium sand or medium-fine sand with mud content ≤ 10% to ensure the drainage and consolidation speed of the blown filler; Taking advantage of the characteristic of coarse sand that accelerates consolidation due to its own weight, the coarse-grained soil is selected as the bottom foundation, and then the fine-grained soil is covered on the upper side in layers. Use a cutter suction dredger to perform high-intensity earth cutting and produce lumpy mud cakes for direct blow-filling.
5. A method for rapid land filling construction according to claim 1, characterized in that: The specific operations of step S4 are: Keep the mud discharge pipeline inlet away from the drain outlet, extend the mud flow to increase the flow distance of the blown filler, and allow the blown filler enough time to separate the mud and water; After each layer of blown fill is completed, a temporary drainage ditch is set up to speed up the drainage and consolidation of the top surface of the layer; Pumping equipment is set up to suck the water in the blown filler to accelerate the consolidation of the blown filler.
6. A rapid land filling construction method according to claim 1, characterized in that: The specific operations of step S5 are: Adjust the mud discharge position of the mud discharge pipe port to ensure the uniformity of each layer of blowing filler; The top of the blown filler is leveled with the assistance of mechanical equipment, and the blown filler surface is leveled in real time to eliminate local pits. The mechanical equipment includes at least one of a bulldozer and a scraper.
7. A method for rapid land filling construction according to claim 5, characterized in that: The water pumping equipment comprises a water pump (1), a connecting pipe (2) connected to the water pumping end of the water pump (1), and a plurality of water pumping pipes (3) arranged on the connecting pipe (2), each of the water pumping pipes (3) being vertically inserted into the blowing filler.
8. A method for rapid land filling construction according to claim 7, characterized in that: The water pumping pipe (3) is provided with a first filter hole (301), and the outer side of the water pumping pipe (3) is provided with a filter portion (4), and the filter portion (4) comprises a mesh bag (401) and a filter filler (402) arranged in the mesh bag (401) for intercepting sand and soil.
9. A method for rapid land filling construction according to claim 8, characterized in that: The filter portion (4) is provided with a plurality of connecting rings (5) along its length direction. The connecting rings (5) are rotatably connected to the outside of the water extraction pipe (3). A connecting rod (501) is provided between two adjacent connecting rings (5). A positioning screw (6) is provided between the connecting ring (5) located at the top of the filter portion (4) and the water extraction pipe (3).
10. A method for rapid land filling construction according to claim 9, characterized in that: A sleeve (7) for covering the filter portion (4) is provided on the outside of the connecting ring (5); the sleeve (7) is connected to the water pump (3) via a support rod; a plurality of groups of second filter holes (701) are provided on the sleeve (7); a filter screen (702) is rotatably provided on the inner wall of the sleeve (7) at each group of second filter holes (701); a rotating tube (703) rotatably connected to the inner wall of the sleeve (7) is connected between two adjacent filter screens (702); and the rotating tube (703) is fixedly connected to the connecting rod (501).