Anti-scouring method for lock catch grouting thin film soft body row revetment

Abstract

The invention discloses an anti-scour method for a lock catch grouting thin film soft mattress bank protection. The anti-scour method comprises the following steps that a nylon rope framework net is installed on the bank; a plurality of unit net racks are fixed in the nylon rope skeleton net to form the lock catch grouting thin film soft mattress; each unit net rack is internally provided with a film unit body; the lock catch grouting thin film soft mattress is lowered to a side slope needing bank protection through a mattress laying ship, and the first-time mattress laying position is calibrated through a guide rope and a buoy; after the first group of lock catch grouting thin film soft body mattresses are successfully lowered, finding the buoy to lower the lock catch grouting thin film soft body mattresses for the second time, and so on until the slope needing bank protection is fully paved; grouting is conducted on a grouting header pipe through an intelligent grouting system on the laying ship, grouting is conducted on each grouting sub-pipeline through the grouting header pipe, and grouting is conducted on the corresponding thin film unit bodies through the grouting sub-pipelines; and when the pressure exceeds a second preset pressure value of the pressure channel controller, grouting is stopped, and thin film unit body grouting is completed. The method effectively prevents the bank slope from being scoured.

Description

Technical Field

[0001] This invention relates to the field of bank protection and erosion prevention technology, and in particular to a method for bank protection and erosion prevention using a locking grouting membrane flexible drainage system. Background Technology

[0002] For the banks of the middle and lower reaches of the Yangtze River, long-term erosion by rapid currents, with slope depths reaching 50 meters, poses a significant threat to the safety of nearby structures if no measures are taken. Underwater erosion is a crucial engineering issue in bank construction. Underwater erosion prevention measures can be divided into active and passive protection. Passive protection involves laying a protective layer of rubble or flexible materials within the foundation protection area to improve the bank's erosion resistance. The most common method is laying a stone protective layer within the protection zone; similar methods include laying concrete blocks, sandbags, and concrete hinged supports. The drawbacks of this method are that the quality of the protective layer is difficult to guarantee due to the influence of topography and water flow conditions, and the amount of materials required is enormous, resulting in high construction costs and poor economic efficiency. Engineering practice also shows that the risk of protective layer failure is high under conditions of material settlement or complex water flow. Active protection aims to prevent erosion by reducing the water flow velocity within the protection zone. Common methods include foundation-mounted guide plates and sacrificial pile groups. These measures also have the disadvantages of large engineering workload and high construction costs, and are difficult to adapt to the marine environment with variable flow velocity and direction, thus failing to achieve comprehensive protection of underwater slopes.

[0003] Therefore, this invention proposes a method for preventing erosion by using a locking grouting membrane flexible revetment. Summary of the Invention

[0004] The purpose of this invention is to provide a method for preventing bank erosion using a locking grouting membrane flexible revetment, which effectively prevents bank erosion.

[0005] The technical solution to achieve the above objectives is:

[0006] A method for preventing erosion using a lockable grouting membrane flexible revetment includes the following steps:

[0007] Step S1: Install a nylon rope skeleton net on the shore; fix multiple unit net frames inside the nylon rope skeleton net to form a lockable grouting membrane soft structure; install a membrane unit inside each unit net frame;

[0008] Step S2: Grouting sub-pipes connected to each film unit are installed on the nylon rope skeleton net, and pressure channel controllers are set between each film unit and the grouting sub-pipes;

[0009] Step S3: The interlocking grouting membrane soft sheet is lowered to the slope that needs to be protected by the laying vessel, and the initial laying position is marked by the guide rope and the float.

[0010] Step S4: After the first set of interlocking grouting membrane soft sheets is successfully lowered, locate the float and lower the second set of interlocking grouting membrane soft sheets, and so on, until the slope that needs to be protected is fully covered.

[0011] Step S5: Grouting is performed on the main grouting pipe through the intelligent grouting system on the laying vessel. The main grouting pipe grouts each sub-grouting pipe, and the sub-grouting pipes grout the corresponding membrane unit. The main grouting pipe is connected to each sub-grouting pipe through a grout channel converter.

[0012] Step S6: When the pressure exceeds the second preset pressure value of the pressure channel controller, stop the grouting and complete the grouting of the thin film unit.

[0013] Preferably, the intelligent grouting system includes a controller, an external motor, a cement-soil grout storage tank, a cement grout mixer, and a grouting pump. The cement grout mixer is driven by the external motor to mix the cement grout in the cement-soil grout storage tank. The grouting pump is connected to the grouting main pipe through a connector to pump the cement grout in the cement-soil grout storage tank into the grouting main pipe. The controller is controlled by an external computer and outputs control signals to control the external motor.

[0014] Preferably, the nylon rope skeleton net is formed by connecting and weaving several main nylon ropes and several sub-nylon ropes; the grouting sub-pipes are fixed to the main nylon ropes by clips.

[0015] Preferably, the unit grid is composed of several horizontal grid bars and several vertical grid bars connected together; the unit grid is connected to the main nylon rope by multiple locking buckles; and a counterweight is installed at the bottom of the unit grid.

[0016] Preferably, the locking grouting membrane soft strip is equipped with a guide rope, and the guide rope is equipped with a float.

[0017] Preferably, the end of the grouting sub-pipe is equipped with a plug. The plug is in the open state before grouting. After grout comes out of the end of the grouting sub-pipe, the plug is remotely closed to increase the grouting pressure. At this time, the pressure of the grouting main pipe and the grouting sub-pipe begins to increase. When the pressure reaches the first preset pressure value of the pressure channel controller, the channel opens and the grout begins to flow into the membrane unit.

[0018] Preferably, the pressure value collected by the pressure channel controller is transmitted to the controller of the intelligent grouting system.

[0019] In step S5, when the pressure reaches the first preset pressure value of the pressure channel controller, the controller controls the pressure channel controller to open the channel.

[0020] In step S6, when the pressure exceeds the second preset pressure value of the pressure channel controller, the controller controls the intelligent grouting system to stop grouting and simultaneously controls the pressure channel controller to close the channel.

[0021] Compared with the prior art, the beneficial effects of the present invention are: by lowering the locking grouting membrane soft strip and grouting the membrane unit, the present invention can protect the riverbank slope within a certain range and effectively prevent the slope from being eroded. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the locking grouting membrane soft revetment bank protection erosion prevention method of the present invention. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figure 1 A method for preventing erosion using a locking grouting membrane flexible revetment is disclosed, based on an intelligent grouting system and a locking grouting membrane flexible revetment 1. The intelligent grouting system includes a controller 16, an external motor 17, a cement-soil slurry storage tank 18, a cement slurry mixer 19, and a grouting pump 20. The cement slurry mixer 19 is driven by the external motor 17, and the controller 16 is controlled by an external computer 15, outputting control signals to control the external motor 17. The cement slurry mixer 19 is installed in the cement-soil slurry storage tank 18, and the grouting pump 20 is connected to the cement-soil slurry storage tank 18.

[0025] Specifically, the following steps are included:

[0026] Step S1: Install a nylon rope skeleton net on the shore; the nylon rope skeleton net is formed by connecting and weaving several main nylon ropes 8 and several sub-nylon ropes 10; the unit net frame 2 is composed of several net frame horizontal bars 3 and several net frame vertical bars 4 connected together; the unit net frame 2 is connected to the main nylon ropes 8 by multiple locking buckles 6; a counterweight 5 is installed at the bottom of the unit net frame 2. Multiple unit net frames 2 are fixed inside the nylon rope skeleton net to form a locking grouting membrane soft assembly 1; each unit net frame 2 contains a membrane unit.

[0027] Step S2: Grouting sub-pipes 9, which communicate with each membrane unit, are installed on the nylon rope skeleton net. The grouting sub-pipes 9 are fixed to the main nylon rope 8 by clips 11. A pressure channel controller 7 is installed between each membrane unit and the grouting sub-pipe. The channel can only be opened when a certain pressure is applied, allowing grout to be injected into the membrane unit.

[0028] Step S3: The interlocking grouting membrane flexible raft 1 is lowered to the slope requiring revetment using the rafting vessel 14. The initial rafting position is marked using guide rope 12 and float 13. The interlocking grouting membrane flexible raft 1 is equipped with guide rope 12, which is used to lower the interlocking grouting membrane flexible raft 1 to the revetment. The guide rope 12 is equipped with float 13, which serves as the rafting positioning tool.

[0029] Step S4: After the first set of locking grouting membrane soft sheet 1 is successfully lowered, locate the float 13 and lower the second set of locking grouting membrane soft sheet 1, and so on, until the slope that needs to be protected is fully covered.

[0030] Step S5: Grouting is performed on the grouting main pipe 22 through the intelligent grouting system on the laying vessel 14. The cement slurry mixer 19 stirs the cement slurry in the cement-soil slurry storage tank 18. The grouting pump 20 is connected to the grouting main pipe 22 through the connector 21 to pump the cement slurry in the cement-soil slurry storage tank 18 into the grouting main pipe 22. The grouting main pipe 22 grouts each grouting sub-pipe 9, and the grouting sub-pipe 9 grouts the corresponding membrane unit. The grouting main pipe 22 is connected to each grouting sub-pipe 9 through the slurry channel converter.

[0031] Specifically, the end of the grouting sub-pipe 9 is equipped with a plug 24. The plug 24 is in the open state before grouting. After grout comes out of the end of the grouting sub-pipe 9, the plug 24 is remotely closed to increase the grouting pressure. At this time, the pressure of the grouting main pipe 22 and the grouting sub-pipe 9 begins to increase. The pressure value collected by the pressure channel controller 7 is transmitted to the controller 16 of the intelligent grouting system. When the pressure reaches the first preset pressure value of the pressure channel controller 7, the controller 16 controls the pressure channel controller 7 to open the channel, and the grout begins to flow into the membrane unit.

[0032] Step S6: When the pressure exceeds the second preset pressure value of the pressure channel controller 7, the controller 16 controls the intelligent grouting system to stop grouting, and at the same time controls the pressure channel controller 7 to close the channel, thus completing the grouting of the membrane unit.

[0033] This invention can protect the bank slope within a certain range and effectively prevent the bank slope from being eroded.

[0034] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for protecting a bank from erosion by a soft body by using a lock-in grouting film, characterized in that, It comprises the following steps: Step S1: installing a nylon rope framework net on the shore; fixing a plurality of unit net frames (2) in the nylon rope framework net to form a lock grouting film soft row (1); each unit net frame (2) is provided with a film unit body; Step S2: installing a grouting sub-pipe (9) in communication with each film unit body on the nylon rope framework net, and arranging a pressure channel controller (7) between each film unit body and the grouting sub-pipe; Step S3: lowering the lock grouting film soft row (1) to the slope to be revetted through a laying boat (14), and demarcating the first laying position through a guide rope (12) and a float (13); Step S4: after the first set of lock grouting film soft rows (1) is successfully lowered, finding the float (13) to lay the second set of lock grouting film soft rows (1), and repeating the operation until the slope to be revetted is fully laid; Step S5: grouting the grouting main pipe (22) through an intelligent grouting system on the laying boat (14), grouting each grouting sub-pipe (9) through the grouting main pipe (22), and grouting the corresponding film unit body through the grouting sub-pipe (9); the grouting main pipe (22) is in communication with each grouting sub-pipe (9) through a slurry channel converter; Step S6: when the pressure exceeds the second preset pressure value of the pressure channel controller (7), stopping grouting, and completing the film unit body grouting.

2. The method according to claim 1, wherein the method is characterized by, The intelligent grouting system comprises a controller (16), an external motor (17), a cement-soil slurry storage barrel (18), a cement slurry mixer (19), and a pressure grouting pump (20); the cement slurry mixer (19) is driven by the external motor (17) to mix the cement slurry in the cement-soil slurry storage barrel (18); the pressure grouting pump (20) is connected to the grouting main pipe (22) through a connecting head (21) to pump the cement slurry in the cement-soil slurry storage barrel (18) into the grouting main pipe (22); the controller (16) is controlled by an external computer (15) to output a control signal to control the external motor (17).

3. The method according to claim 1, wherein the method is characterized by, The nylon rope framework net is formed by connecting and weaving a plurality of main nylon ropes (8) and a plurality of sub-nylon ropes (10); the grouting sub-pipe (9) is fixed on the main nylon rope (8) through a buckle (11).

4. The method according to claim 3, wherein the lock grouting film soft mattress is arranged on the bank. The unit net frame (2) is composed of a plurality of net frame horizontal bars (3) and a plurality of net frame vertical bars (4); the unit net frame (2) is linked to the main nylon rope (8) through a plurality of buckles (6); and the unit net frame (2) is provided with a counterweight (5) below the bottom.

5. The method of claim 1, wherein the method further comprises the step of providing a plurality of lock-cuffing membranes. The lock grouting film soft row (1) is provided with a guide rope (12), and the guide rope (12) is provided with a float (13).

6. The method of claim 1, wherein the method further comprises: The tail of the grouting sub-pipe (9) is provided with a plug (24); the plug (24) is in an open state before grouting; after the tail of the grouting sub-pipe (9) discharges the slurry, the plug (24) is remotely closed to increase the grouting pressure; at this time, the grouting main pipe (22) and the grouting sub-pipe (9) start to increase the pressure; when the pressure reaches the first preset pressure value of the pressure channel controller (7), the channel is opened, and the slurry starts to flow into the film unit body.

7. The method according to claim 6, wherein the method is characterized by, The pressure value collected by the pressure channel controller (7) is transmitted to the controller (16) of the intelligent grouting system, In step S5, when the pressure reaches the first preset pressure value of the pressure channel controller (7), the controller (16) controls the pressure channel controller (7) to open the channel; In step S6, when the pressure exceeds the second preset pressure value of the pressure channel controller (7), the controller (16) controls the intelligent grouting system to stop grouting, and controls the pressure channel controller (7) to close the channel.

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