Composite film bag and grouting method thereof

Abstract

The invention discloses a composite film bag and a grouting method thereof, and relates to the technical field of civil engineering, the composite film bag comprises a film bag, the outer surface of which is provided with a geotextile layer; the top face of the film bag is sunken downwards to form a non-through groove body, an annular cavity is defined by the inner side face of the film bag and the groove face of the groove body, and the inflatable supporting piece is located in the annular cavity. The geotextile layer is arranged outside the film bag to form the composite film bag, so that the tensile property, the wear resistance and the aging resistance are improved, and the composite film bag is not easy to damage during manufacturing and maintenance; and the top of the film bag is provided with the groove body, so that the groove body can be filled with soil for planting when facing special polluted soil or soil which is not suitable for plant growth, and the ecological slope protection effect is improved. The membrane bag adopts the inflatable supporting piece as a supporting structure, the supporting performance is guaranteed, meanwhile, the occupied area of a product can be reduced, and the transportation efficiency is improved; the inflatable supporting piece is connected with the inner surface of the film bag through the flexible connecting piece, and deformation of the film bag can be limited in the grouting process so that the bulging problem can be avoided.

Description

Technical Field

[0001] The invention relates to the technical field of civil engineering, and in particular to a composite membrane bag and a grouting method thereof. Background Art

[0002] Geomembrane bags are widely used in dam slope protection, bank protection and other protective projects. The existing production process of geomembrane bags is to pour concrete or cement mortar into the bag through a high-pressure pump, add fibrous materials such as hanging ropes into the bag, and after a certain period of time, the concrete or cement mortar will combine with the fibrous materials to form a high-strength plate-like structure. This geomembrane bag and production process have the following defects:

[0003] 1. The flushing pressure of concrete and cement mortar is difficult to control and is prone to bulging or clogging.

[0004] 2. After the concrete and cement mortar are poured, they need to be stepped on manually to make the concrete uniform and dense. The homogenization effect is poor and it is easy to retain air. Excessive air residue will cause cracks at the joints of the bag.

[0005] 3. During the production and maintenance period, the tensile stress that the film bag can withstand is limited and it is easy to be damaged.

[0006] 4. The connection performance between geomembrane bags is weak, and slippage is prone to occur during actual use, resulting in weak points in the protection project, and then causing the slope and bank protection performance to fail.

[0007] 5. Geomembrane bags are usually hollow in the middle. For special polluted soils or soils that are not suitable for plant growth, ecological slope protection often fails to achieve the expected results.

[0008] In view of this, how to provide a geomembrane bag and a manufacturing method that can partially or completely solve the above-mentioned defects is a technical problem that technical personnel in this field urgently need to solve. Summary of the invention

[0009] The purpose of the present invention is to provide a composite film bag to solve the problems existing in the prior art.

[0010] To achieve the above object, the present invention provides a composite film bag, comprising:

[0011] The film bag has a geotextile layer on its outer surface and is hollow inside; the top surface of the film bag is sunken downward to form a non-penetrating trough.

[0012] Furthermore, it also includes:

[0013] An inflatable support member, wherein an annular chamber is formed between the inner side surface of the membrane bag and the groove surface of the groove body, the inflatable support member is located in the annular chamber, and the upper and lower ends of the inflatable support member are respectively connected to the top and bottom surfaces of the membrane bag; the outer side surface of the inflatable support member is connected to the inner side surface of the membrane bag and / or the groove surface of the groove body through a flexible connector, and the inflatable support member and the flexible connector can limit the deformation of the membrane bag during grouting;

[0014] A one-way inflation port is arranged on the membrane bag and connected to the inflatable support member. A one-way inflation valve is arranged on the one-way inflation port. When the inflatable support member is inflated, the inflatable support member expands from a folded state to an unfolded state and supports the top and bottom surfaces of the membrane bag.

[0015] Furthermore, the inflatable support members are provided in plurality and are evenly arranged at the corners of the membrane bag, an inflation channel is defined in the membrane bag, and both ends of the inflation channel are respectively connected to adjacent inflatable support members.

[0016] Furthermore, the membrane bags are provided with hook connectors, and adjacent membrane bags can be fixed by the hook connectors.

[0017] Furthermore, the inflatable support member is a telescopic cylinder structure and is made of plastic, the membrane bag is made of a polymerized chemical fiber synthetic material containing carbon black powder, and the geotextile layer is connected to the membrane bag by an adhesive.

[0018] Furthermore, it also includes: a grouting tank, which has a rotating rod inside and a stirring blade on the rotating rod, and the membrane bag is provided with a grouting port connected to the inside, and the grouting tank is connected to the grouting port for grouting into the membrane bag.

[0019] Furthermore, it also includes: a vibration belt, which is filled with a flexible vibration medium, the vibration belt is connected to a vibration generator, and the vibration belt is wound around the outer surface of the grouting tank and is arranged on the outer surface of the membrane bag.

[0020] Furthermore, the vibration belt is fixed to the outer surface of the membrane bag by Velcro.

[0021] Furthermore, the vibration generator and the rotating rod are both electrically connected to the controller.

[0022] The present invention also provides a grouting method for a composite film bag, comprising the following steps:

[0023] S1: Lay the film bag flat, and inflate the inflatable support member through the one-way inflation port, so that the inflatable support member expands and supports the film bag;

[0024] S2: Wrapping a vibration belt around the outer surface of the grouting tank and the outer surface of the film bag, and starting a vibration generator;

[0025] S3: The grouting tank injects concrete or cement mortar into the membrane bag. During the grouting process, the vibration belt continues to vibrate, and the rotating rod in the grouting tank evenly stirs the concrete or cement mortar through the stirring blades;

[0026] S4: The inner side of the membrane bag and / or the groove surface of the groove body are connected to the inflatable support member through a flexible connector to limit the deformation of the membrane bag during the grouting process. When the membrane bag is filled with concrete or cement mortar, the grouting tank stops grouting;

[0027] S5: The vibration generator continues to vibrate the membrane bag through the vibration belt to homogenize the concrete or cement mortar in the membrane bag.

[0028] The present invention discloses the following technical effects:

[0029] 1. A geotextile layer is arranged outside the film bag to form a composite film bag, which improves the tensile resistance, wear resistance and aging resistance, and is not easily damaged during production and maintenance; a trough is arranged on the top of the film bag. When facing special polluted soil or soil that is not suitable for plant growth, soil can be filled in the trough and green can be planted to improve the ecological slope protection effect.

[0030] 2. Hook connectors are set on the outside of the membrane bag, and adjacent membrane bags can be fixed by the hook connectors. On the one hand, it can prevent the membrane bag from slipping and eliminate weak points in the protection project. On the other hand, it can also be spliced ​​to form a large-area, high-coverage slope protection structure. The flexibility of the overall structural form of the slope protection structure is greatly improved, which is suitable for slopes of various areas and structures to ensure the integrity of the slope protection function.

[0031] 3. The membrane bag adopts an inflatable support as the supporting structure, which can reduce the product footprint and improve transportation efficiency while ensuring the supporting performance; the inflatable support is connected to the inner surface of the membrane bag through a flexible connector, which can limit the deformation of the membrane bag during the grouting process and avoid the bulging problem.

[0032] 4. A rotating rod and a stirring blade are set inside the grouting tank, and a vibration belt is set outside the grouting tank and the membrane bag. The synergistic effect of the two can fully stir and homogenize the slurry, improve the fluidity of the slurry, further avoid the problem of grouting blockage, and also prevent the excessive gas generated during the grouting process from causing the seams of the bag to open and rupture, thereby improving the density and uniformity of the membrane bag after formation. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 It is a schematic diagram of the structure of the present invention;

[0035] Figure 2 It is a schematic diagram of the grouting tank structure;

[0036] Figure 3 It is a schematic diagram of the vibration belt structure;

[0037] Among them, 1. membrane bag; 101. tank body; 102. annular chamber; 103. inflation channel; 104. grouting port; 2. inflatable support; 3. one-way inflation port; 4. hook connector; 5. grouting tank; 6. rotating rod; 7. stirring blade; 8. vibration belt; 9. vibration generator. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Example

[0040] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0041] An embodiment of the present invention provides a composite film bag, comprising:

[0042] The film bag 1 has a geotextile layer on its outer surface and is hollow inside; the top surface of the film bag 1 is sunken downward to form a non-penetrating groove body 101.

[0043] In this embodiment, it also includes:

[0044] An inflatable support member 2, an annular chamber 102 is formed between the inner side surface of the membrane bag 1 and the groove surface of the groove body 101, the inflatable support member 2 is located in the annular chamber 102, and the upper and lower ends of the inflatable support member 2 are respectively connected to the top and bottom surfaces of the membrane bag 1; the outer side surface of the inflatable support member 2 is connected to the inner side surface of the membrane bag 1 and / or the groove surface of the groove body 101 through a flexible connector, and the inflatable support member 2 and the flexible connector can limit the deformation of the membrane bag 1 during grouting; specifically, the flexible connectors can be symmetrically arranged on the left and right sides of the inflatable support member 2, the flexible connector on the left is connected to the outer side surface of the membrane bag 1, and the flexible connector on the right is connected to the groove surface of the groove body 101; it can also be connected to the top and bottom surfaces of the membrane bag 1 in an upper and lower symmetrical manner; it can also be connected to the membrane bag 1 and the groove surface in four directions at the same time, and the membrane bag 1 and the groove body 101 are pulled inward during grouting to limit their deformation, avoid bulging problems, and ensure that the thickness of the membrane bag 1 is uniform at all locations. The flexible connector can be a nylon rope or other rope structure with sufficient toughness. Theoretically, the more flexible connectors are set, the more conducive it is to limit the deformation of the film bag 1, but too many will affect the molding quality of the film bag 1. In this embodiment, the flexible connectors are respectively connected to the top surface, bottom surface, outer side surface of the film bag 1 and the groove surface of the groove body 101.

[0045] A one-way inflation port 3 is provided on the membrane bag 1 and is connected to the inflatable support member 2. A one-way inflation valve is provided on the one-way inflation port 3. When the inflatable support member 2 is inflated, the inflatable support member 2 expands from a folded state to an unfolded state and supports the top and bottom surfaces of the membrane bag 1.

[0046] In this embodiment, the membrane bag 1 has four corners, and four inflatable support members 2 are correspondingly provided and arranged one by one at the corners of the membrane bag 1. An inflation channel 103 is defined in the membrane bag 1, and the two ends of the inflation channel 103 are respectively connected to the adjacent inflatable support members 2. The four inflatable support members 2 can only be provided with one one-way inflation port 3 to form an integrated inflation structure.

[0047] In this embodiment, hook connectors 4 are provided on the film bags 1 , and adjacent film bags 1 can be fixed by the hook connectors 4 .

[0048] In this embodiment, the inflatable support member 2 is a telescopic cylinder structure and is made of plastic, the film bag 1 is made of high-density polyethylene (PE) added with 2% carbon black, and the geotextile layer is made of 200g / m 2 The flexible connector is made of polyester fiber and is connected to the membrane bag 1 by an adhesive. The flexible connector is made of nylon.

[0049] In this embodiment, it also includes: a grouting tank 5, with a rotating rod 6 arranged inside, a stirring blade 7 arranged on the rotating rod 6, a grouting port 104 connected to the inside is arranged on the membrane bag 1, and the grouting tank 5 is connected to the grouting port 104 for grouting into the membrane bag 1.

[0050] In this embodiment, it also includes: a vibration belt 8, which is filled with a flexible vibration medium. The vibration belt 8 is connected to the vibration generator 9. The vibration belt 8 is wound around the outer surface of the grouting tank 5 and is arranged on the outer surface of the membrane bag 1.

[0051] In this embodiment, the vibration belt 8 is fixed to the outer surface of the film bag 1 by Velcro. The band-shaped vibration belt 8 can be rolled up for storage, which is convenient for secondary use, and is also convenient for fixing to any position of the film bag 1 by Velcro.

[0052] In this embodiment, the vibration generator 9 and the rotating rod 6 are both electrically connected to the controller, and the vibration frequency, vibration power, and rotation speed of the rotating rod 6 can be controlled in real time by the controller.

[0053] The present invention also provides a grouting method for a composite film bag, comprising the following steps:

[0054] S1: Lay the film bag 1 flat, and inflate the inflatable support member 2 through the one-way inflation port 3, so that the inflatable support member 2 expands and supports the film bag 1;

[0055] S2: The vibration belt 8 is wound around the outer surface of the grouting tank 5 and is set on the outer surface of the film bag 1 through Velcro, and the vibration generator 9 is started;

[0056] S3: The grouting tank 5 injects concrete or cement mortar into the membrane bag 1. During the grouting process, the vibration belt 8 continues to vibrate, and the rotating rod 6 in the grouting tank 5 evenly stirs the concrete or cement mortar through the stirring blades 7;

[0057] S4: The inner side surface of the membrane bag 1 and / or the groove surface of the groove body 101 are connected to the inflatable support member 2 through a flexible connector to limit the deformation of the membrane bag 1 during the grouting process. When the membrane bag 1 is filled with concrete or cement mortar, the grouting tank 5 stops grouting;

[0058] S5: The vibration generator 9 continues to vibrate the membrane bag 1 through the vibration belt 8 to homogenize the concrete or cement mortar in the membrane bag 1.

[0059] Experimental example

[0060] Comparison of anti-ultraviolet aging test between geomembrane bags with carbon black powder and traditional geomembrane bags

[0061]

[0062] Comparison of mechanical properties between geomembrane bags with carbon black powder and traditional geomembrane bags

[0063]

[0064]

[0065] From the above test results, it can be seen that compared with traditional geomembrane bags, the geomembrane bags with added carbon black powder have significantly improved anti-ultraviolet aging ability and mechanical properties.

[0066] Comparison of tensile tests between composite film bag (this embodiment) and traditional geomembrane bag

[0067]

[0068] From the above test results, it can be seen that the tensile strength of the composite film bag is significantly improved compared with the traditional geotextile bag.

[0069] Comparison of anti-bulging test between composite film bag and traditional geomembrane bag during grouting

[0070]

[0071]

[0072] From the above test results, it can be seen that compared with traditional geotextile bags, composite film bags can greatly reduce the bulging phenomenon and can achieve the effect of no obvious bulging under specific working conditions.

[0073] Composite membrane bag grouting anti-clogging test

[0074]

[0075]

[0076] From the above test results, it can be seen that compared with traditional geotextile bags, composite film bags can significantly reduce the frequency and degree of clogging.

[0077] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0078] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A composite film bag, characterized in that: include: A film bag (1) has a geotextile layer arranged on its outer surface and is hollow inside; the top surface of the film bag (1) is recessed downward to form a non-penetrating groove body (101).

2. A composite film bag according to claim 1, characterized in that: Also includes: An inflatable support member (2), wherein an annular chamber (102) is formed between the inner side surface of the membrane bag (1) and the groove surface of the trough body (101), and the inflatable support member (2) is located in the annular chamber (102), and the upper and lower ends of the inflatable support member (2) are respectively connected to the top surface and the bottom surface of the membrane bag (1); the outer side surface of the inflatable support member (2) is connected to the inner side surface of the membrane bag (1) and / or the groove surface of the trough body (101) through a flexible connector, and the inflatable support member (2) and the flexible connector can limit the deformation of the membrane bag (1) during grouting; A one-way inflation port (3) is arranged on the membrane bag (1) and is connected to the inflatable support member (2). A one-way inflation valve is arranged on the one-way inflation port (3). When the inflatable support member (2) is inflated, the inflatable support member (2) expands from a folded state to an unfolded state and supports the top and bottom surfaces of the membrane bag (1).

3. A composite film bag according to claim 2, characterized in that: The inflatable support members (2) are provided in plurality and are evenly arranged at the corners of the membrane bag (1), and an inflation channel (103) is defined in the membrane bag (1), and both ends of the inflation channel (103) are respectively connected to adjacent inflatable support members (2).

4. A composite film bag according to claim 2, characterized in that: The membrane bag (1) is provided with a hook connection piece (4), and adjacent membrane bags (1) can be fixed by the hook connection piece (4).

5. A composite film bag according to claim 2, characterized in that: The inflatable support member (2) is a telescopic cylinder structure and is made of plastic; the membrane bag (1) is made of a polymerized chemical fiber synthetic material containing carbon black powder; and the geotextile layer is connected to the membrane bag (1) by an adhesive.

6. A composite film bag according to claim 2, characterized in that: Also includes: A grouting tank (5) is provided with a rotating rod (6) inside, and a stirring blade (7) is provided on the rotating rod (6). The membrane bag (1) is provided with a grouting port (104) connected to the inside. The grouting tank (5) is connected to the grouting port (104) for grouting into the membrane bag (1).

7. A composite film bag according to claim 6, characterized in that: Also includes: A vibration belt (8) is filled with a flexible vibration medium, the vibration belt (8) is connected to a vibration generator (9), and the vibration belt (8) is wound around the outer surface of the grouting tank (5) and is arranged on the outer surface of the membrane bag (1).

8. A composite film bag according to claim 7, characterized in that: The vibration belt (8) is fixed to the outer surface of the membrane bag (1) by means of Velcro.

9. A composite film bag according to claim 7, characterized in that: The vibration generator (9) and the rotating rod (6) are both electrically connected to the controller.

10. A grouting method for a composite film bag, characterized in that: The method for making a composite film bag according to any one of claims 7 to 9 comprises the following steps: S1: Lay the film bag (1) flat, and inflate the inflatable support member (2) through the one-way inflation port (3), so that the inflatable support member (2) expands and supports the film bag (1); S2: wrapping a vibration belt (8) around the outer surface of the grouting tank (5) and the outer surface of the film bag (1), and starting a vibration generator (9); S3: The grouting tank (5) injects concrete or cement mortar into the membrane bag (1), and during the grouting process, the vibration belt (8) continues to vibrate, and the rotating rod (6) in the grouting tank (5) uniformly stirs the concrete or cement mortar through the stirring blades (7); S4: The inner side surface of the membrane bag (1) and / or the groove surface of the groove body (101) are connected to the inflatable support member (2) via a flexible connector, so as to limit the deformation of the membrane bag (1) during the grouting process. When the membrane bag (1) is filled with concrete or cement mortar, the grouting tank (5) stops grouting; S5: The vibration generator (9) continues to vibrate the membrane bag (1) via the vibration belt (8) to homogenize the concrete or cement mortar in the membrane bag (1).

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