Sand filling pipe bag for hydraulic slurry making in-situ pressure filling and construction method

Abstract

The invention discloses a sand filling pipe bag for hydraulic slurry making in-situ pressure filling and a construction method. The sand filling pipe bag comprises a bag body, a plurality of grouting cuffs and a plurality of drainage cuffs, wherein the grouting cuffs and the drainage cuffs are arranged on the bag body; a cavity is formed in the bag body and filled with hydraulic reclamation mortar. Each grouting sleeve opening is connected with a grouting pipe, and each drainage sleeve opening is connected with a drainage pipeline. The filling mortar is injected into the sand filling pipe bag in a hydraulic reclamation mode, in the process, the concentration of the filling mortar does not need to be controlled through a mechanical device, the filling mortar is directly injected into the sand filling pipe bag, redundant water in the filling mortar is extracted through an air pump externally connected with the drainage channel, and in the process, the sand filling efficiency of the sand filling pipe bag can be improved; and meanwhile, the pressure in the sand bag is controlled by the sucking pump, so that the sand filling pipe bag is prevented from being broken due to overhigh pressure.

Description

Technical Field

[0001] The invention relates to the technical field of sand-filled tube bags, in particular to a sand-filled tube bag for hydraulic slurry in-situ pressure grouting and a construction method. Background Art

[0002] Sand-filled tube bags are tubular bags made of materials that filter water but not sand. They have good resistance to wave impact and water pressure. Due to their low cost and easy dismantling, they are widely used in projects such as building embankments, underwater buildings, artificial islands, and cofferdams.

[0003] During the sand-filled tube bag filling process, filling efficiency, mortar concentration within the bag, and bag strength after filling are key factors influencing the actual project results. However, current methods often use a sand suction pump to pump the filling sand into each cuff of the tube bag, relying on the bag's inherent permeability to drain the mortar. When drainage rates are insufficient, patting the bag is often the only method to accelerate the drainage process, resulting in low construction efficiency.

[0004] Furthermore, the sand-filled tube bag in the prior art is a single-layer bag structure, which suffers from great loss during use and needs to be frequently replaced, resulting in high costs.

[0005] Therefore, in order to further optimize the relevant technologies of sand-filled tube bags, improve the construction efficiency of sand-filled tube bags and improve their overall strength, there is an urgent need for a sand-filled tube bag with simple and efficient hydraulic slurry in-situ pressure injection. Summary of the Invention

[0006] (1) Technical issues to be resolved

[0007] The technical problem to be solved by the present invention is to provide a sand-filled tube bag and a construction method for hydraulic slurry in-situ pressure filling. The filling mortar is injected into the sand-filled tube bag by blowing. In this process, there is no need to control the concentration of the filling mortar through a mechanical device. The mortar is directly poured into the sand-filled tube bag, and the excess water in the filling mortar is extracted through an external vacuum pump through the drainage channel. This process can improve the sand filling efficiency of the sand-filled tube bag. At the same time, the vacuum pump is used to control the pressure inside the sand bag, thereby avoiding the sand-filled tube bag from rupturing due to excessive pressure.

[0008] (2) Technical solution

[0009] The solution adopted by the present invention to solve the above-mentioned technical problems is a sand-filled tube bag for in-situ hydraulic grouting and grouting, wherein the sand-filled tube bag includes a bag body, and a plurality of grouting cuffs and a plurality of drainage cuffs arranged on the bag body; a cavity is provided in the bag body, and the cavity is filled with blown mortar; each of the grouting cuffs is connected to a grouting pipe, and each of the drainage cuffs is connected to a drainage pipe.

[0010] Specifically, the sand-filled tube bag is a tubular bag as a whole.

[0011] By adopting the above scheme, filling mortar is injected into the sand-filled tube bag by blowing and filling. In this process, there is no need to control the concentration of the filling mortar through mechanical devices. The mortar is directly poured into the sand-filled tube bag, and the excess water in the filling mortar is extracted through an external vacuum pump through the drainage channel. This process can improve the sand filling efficiency of the sand-filled tube bag. At the same time, the vacuum pump controls the pressure inside the sand bag, thereby avoiding the rupture of the sand-filled tube bag due to excessive pressure.

[0012] In some embodiments, the bag body includes a first bag body and a second bag body, and the first bag body and the second bag body are sewn together using a single-line sewing method, and a sewing line is formed between the first bag body and the second bag body.

[0013] Specifically, there should be no joint seams between the first bag body and the second bag body in the main force-bearing direction.

[0014] By adopting the above scheme, the formation of the sewing line can realize the rapid disassembly and assembly of the bag body by removing the sewing line. Among them, the blowing mortar can be used for blowing sand at the construction site, and the bag body of the sand-filled tube bag can be recycled and reused, which is beneficial to saving sand and soil resources, reducing construction costs, and protecting the ecological environment.

[0015] In some embodiments, the bag body includes an outer bag and an inner bag arranged from outside to inside, and the outer surface of the inner bag and the inner surface of the outer bag are in contact with each other; and the inner bag and the outer bag are sewn together at the grouting cuff and the drainage cuff.

[0016] In some embodiments, the outer bag is made of woven geotextile; the inner bag is made of non-woven geotextile.

[0017] In some embodiments, the outer bag is made of high-strength and anti-aging woven geotextile, which can effectively improve the overall strength of the sand-filled tube bag; the inner bag is made of non-woven geotextile with good soil retention, and its soil retention can effectively reduce the wear of the soil particles in the bag on the outer bag woven geotextile; and it can be suitable for the production of large-volume sand-filled tube bags.

[0018] Specifically, the inner bag is made of non-woven geotextile, which can isolate sand and gravel when in use to prevent sand and gravel filled with mortar from penetrating the inner bag and cutting the outer bag; when in use, the sand and gravel filled with mortar are isolated by the inner bag, and only moisture is discharged from the inner bag and then discharged from the outer bag; and the outer bag is made of high-strength and anti-aging woven geotextile, which increases the service life of the outer bag; the non-woven geotextile used in the inner bag is low in cost; and because the outer bag and the inner bag are sewn together by sewing lines, when inspecting the sand-filled tube bag, the sewing lines can be removed to achieve rapid disassembly and assembly of the bag body, the bag body can be recycled, the bag body can be rinsed and the degree of loss of the inner bag can be checked. If it meets the specifications, it can be re-sewn and reused; if the inner bag is seriously damaged, it can be replaced; the service life of the sand-filled tube bag is improved, and costs are greatly saved; compared with the single-layer bag body used in the sand-filled tube bag in the prior art, costs are greatly saved.

[0019] In some embodiments, the plurality of grouting cuffs include multiple groups of grouting cuffs, each group of grouting cuffs includes multiple grouting cuffs; the plurality of drainage cuffs include multiple groups of drainage cuffs, each group of drainage cuffs includes multiple drainage cuffs; and, a group of drainage cuffs is arranged between every two groups of grouting cuffs.

[0020] In some embodiments, each group of grouting cuffs includes a plurality of grouting cuffs extending along the width direction of the bag body; each group of drainage cuffs includes a plurality of drainage cuffs extending along the width direction of the bag body.

[0021] In some embodiments, the grouting cuffs are arranged at the center line of the long side and the center area of both sides of the sand-filled tube bag, so that the mortar can fill the entire sand-filled tube bag as evenly as possible during grouting.

[0022] In some embodiments, the drainage pipe includes a pipe head, a hoop, a water pump pipe, a filter, and a rubber ring; the pipe head is fixedly connected to the drainage cuff through the hoop; the water pump pipe is connected to the end of the pipe head away from the drainage cuff; and a rubber ring is provided between the pipe head and the water pump pipe, and the filter is provided on the inner side of the rubber ring between the pipe head and the water pump pipe; the end of the water pump pipe away from the pipe head is connected to a water pump, and the water pump can extract moisture from the blown mortar in the bag body.

[0023] Specifically, the pipe head and the water pump pipe are fixed together by a mechanical connection, and the filter screen is pressed between the pipe head and the water pump pipe, so that the filter screen is easy to replace.

[0024] By adopting the above scheme, excess water in the filling mortar is extracted by an air pump, and the filter screen ensures that most of the soil particles in the filling mortar are not lost when the filling mortar passes through the drainage channel, which is conducive to accelerating the consolidation speed of the sand and soil in the sand-filled tube bag and improving the overall strength of the sand-filled tube bag.

[0025] In some embodiments, the blown fill mortar is made of filling sand by means of reamer suction or rake suction; and the blown fill mortar is filled into the cavity of the bag body through the grouting pipe, thereby improving the sand filling efficiency of the sand-filled tube bag.

[0026] The solution adopted by the present invention to solve the above technical problems is a construction method of hydraulic slurry in-situ pressure grouting sand-filled tube bags, comprising the following steps:

[0027] (1) After measuring the positioning pile using a positioning device such as GPS or theodolite, the bag body of the sand-filled tube bag is fixed on the positioning pile;

[0028] (2) Insert the grouting pipe and drainage channel into the grouting cuff and drainage cuff respectively, and fix them. Connect the drainage channel to the water pump;

[0029] (3) Using the blowing filling technology, the filling sand is made into filling mortar at the construction site, and the filling mortar is poured into the sand-filled tube bag through the grouting pipe. When the filling mortar in the sand-filled tube bag reaches a certain amount, the water pump is started to extract the excess water in the filling mortar in the sand-filled tube bag through the drainage pipe until the filling of the sand-filled tube bag is completed;

[0030] (5) Remove the grouting pipe and drainage pipe, and sew the grouting cuff and drainage cuff to ensure that the mortar in the sand-filled pipe bag does not flow out;

[0031] (6) When the sand-filled tube bag needs to be dismantled, the bag body can be quickly disassembled and assembled by removing the sewing line, the bag body can be recovered, the bag body can be rinsed and its loss degree can be checked. If it meets the requirements of the specification, it can be rewoven and reused; if the inner bag is seriously damaged, it can be replaced and rewoven; the blown fill mortar in the removed sand-filled tube bag can be used for backfilling sand;

[0032] In some embodiments, in step (3), the fullness of the blown fill mortar in the sand-filled tube bag needs to be controlled within the range of 80% to 85%, and the sand content in the blown fill mortar needs to be controlled within the range of 70% to 85%.

[0033] (3) Beneficial effects

[0034] Compared with the existing technology, the present invention designs a sand-filled pipe bag and construction method for hydraulic slurry in-situ pressure grouting.

[0035] (1) The present invention adopts a blowing filling method to inject filling mortar into the sand-filled tube bag. In this process, there is no need to control the concentration of the filling mortar through a mechanical device. The filling mortar is directly poured into the sand-filled tube bag, and the excess water in the filling mortar is extracted through an external vacuum pump connected to the drainage channel. This process can improve the sand filling efficiency of the sand-filled tube bag. At the same time, the vacuum pump controls the pressure inside the sand bag, avoiding the sand-filled tube bag from rupturing due to excessive pressure.

[0036] (2) The first bag body and the second bag body of the present invention are sewn together by a single-line sewing method, and a sewing line is formed between the first bag body and the second bag body; the bag body can be quickly disassembled and assembled by removing the sewing line, wherein the blown fill mortar can be used for blown fill sand at the construction site, and the bag body of the sand-filled tube bag can be recycled and reused, which is beneficial to saving sand and soil resources, reducing construction costs, and protecting the ecological environment;

[0037] (3) The grouting cuffs of the present invention are arranged at the center line of the long side and the center area of both sides of the sand-filled tube bag, so that the mortar can fill the entire sand-filled tube bag as evenly as possible during grouting;

[0038] (4) The outer bag of the present invention adopts high-strength and anti-aging woven geotextile, which can effectively improve the overall strength of the sand-filled tube bag; the inner bag adopts non-woven geotextile with good soil retention, which can effectively reduce the wear of the soil particles in the bag on the outer bag woven geotextile; and it is suitable for the production of large-volume sand-filled tube bags;

[0039] (5) The present invention extracts excess water from the filling mortar through an air pump, wherein the filter screen ensures that most of the soil particles in the filling mortar are not lost when the filling mortar passes through the drainage channel, which is beneficial to accelerate the consolidation speed of the sand and soil in the sand-filled tube bag and improve the overall strength of the sand-filled tube bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0041] Figure 1 This is a structural schematic diagram of a sand-filled tube bag for hydraulic slurry in-situ pressure grouting according to the present invention;

[0042] Figure 2 This is a schematic structural diagram from another angle of a sand-filled tube bag for hydraulic slurry in-situ pressure grouting according to the present invention;

[0043] Figure 3 for Figure 2 Cross-sectional view at AA in the middle;

[0044] Figure 4 for Figure 3 The enlarged schematic diagram of point B in the middle;

[0045] Figure 5 It is a schematic diagram of the structure of the bag body of the present invention.

[0046] The names of the components corresponding to the various reference numerals in the figure are: 1. Sand-filled tube bag; 1-1. Bag body; 1-1-1. Outer bag; 1-1-2. Inner bag; 1-2. Sewing line; 1-3. Grouting cuff; 1-4. Drainage cuff; 2. Blown mortar; 3. Grouting pipe; 4. Drainage pipe; 4-1. Pipe head; 4-2. Hoop; 4-3. Pump pipe; 4-4. Filter; 4-5. Rubber ring. DETAILED DESCRIPTION

[0047] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0048] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0049] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the features in the following embodiments and embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of this application.

[0050] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on this application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0051] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The illustrations only show components related to the present application and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0052] Additionally, in the following description, specific details are provided to provide a thorough understanding of the examples, however, one skilled in the art will appreciate that the examples can be practiced without these specific details.

[0053] The following describes the technical solutions provided by various embodiments of the present application in conjunction with the accompanying drawings.

[0054] like Figure 1-Figure 5 As shown, the present invention provides a sand-filled tube bag for in-situ hydraulic grouting. The sand-filled tube bag 1 comprises a bag body 1-1, and a plurality of grouting cuffs 1-3 and a plurality of drainage cuffs 1-4 disposed on the bag body 1-1. The bag body 1-1 defines a cavity filled with blown mortar 2. Each grouting cuff 1-3 is connected to a grouting pipe 3, and each drainage cuff 1-4 is connected to a drainage pipe 4. Specifically, the sand-filled tube bag 1 is tubular in shape. Using this solution, the mortar is injected into the sand-filled tube bag 1 by blow-filling. This process eliminates the need for mechanical control of the mortar concentration; the mortar is directly poured into the sand-filled tube bag 1. Excess moisture in the mortar is extracted through an external vacuum pump connected to the drainage channel. This process improves the sand filling efficiency of the sand-filled tube bag 1. Furthermore, the vacuum pump controls the pressure within the sand bag, preventing the sand-filled tube bag 1 from rupturing due to excessive pressure.

[0055] In some embodiments, the bag body 1-1 includes a first bag body 1-1 and a second bag body 1-1, and the first bag body 1-1 and the second bag body 1-1 are sewn together by a single-line sewing method, and a sewing line 1-2 is formed between the first bag body 1-1 and the second bag body 1-1. Specifically, the first bag body 1-1 and the second bag body 1-1 shall not have a joint seam in the main force direction. With the above scheme, the formation of the sewing line 1-2 can realize the rapid disassembly and assembly of the bag body 1-1 by removing the sewing line 1-2, wherein the blown mortar 2 can be used for blown sand at the construction site, and the bag body 1-1 of the sand-filled tube bag 1 can be recycled and reused, which is conducive to saving sand and soil resources, reducing construction costs, and protecting the ecological environment. In some embodiments, the bag body 1-1 includes an outer bag 1-1-1 and an inner bag 1-1-2 arranged from outside to inside, and the outer surface of the inner bag 1-1-2 is in contact with the inner surface of the outer bag 1-1-1; and the inner bag 1-1-2 and the outer bag 1-1-1 are sewn together at the grouting cuff 1-3 and the drainage cuff 1-4. In some embodiments, the outer bag 1-1-1 is made of woven geotextile; and the inner bag 1-1-2 is made of non-woven geotextile. In some embodiments, the outer bag 1-1-1 is made of high-strength and anti-aging woven geotextile, which can effectively improve the overall strength of the sand-filled tube bag 1; the inner bag 1-1-2 is made of non-woven geotextile with good soil retention, and its soil retention can effectively reduce the wear of the soil particles in the bag on the woven geotextile of the outer bag 1-1-1; and it is suitable for the production of large-volume sand-filled tube bags 1.

[0056] In some embodiments, the plurality of grouting cuffs 1-3 include two groups of grouting cuffs 1-3, each group of grouting cuffs 1-3 includes three grouting cuffs 1-3; the plurality of drainage cuffs 1-4 include one group of drainage cuffs 1-4, each group of drainage cuffs 1-4 includes three drainage cuffs 1-4; and a group of drainage cuffs 1-4 is provided between the two groups of grouting cuffs 1-3. In some embodiments, each group of grouting cuffs 1-3 includes three grouting cuffs 1-3 extending along the width direction of the bag body 1-1; each group of drainage cuffs 1-4 includes three drainage cuffs 1-4 extending along the width direction of the bag body 1-1. In some embodiments, the grouting cuffs 1-3 are arranged in the center area of the long side centerline and both side edges of the sand-filled tube bag 1, so that the mortar can fill the entire sand-filled tube bag 1 as evenly as possible during grouting.

[0057] In some embodiments, the drainage pipe 4 includes a pipe head 4-1, a hoop 4-2, a water pumping pipe 4-3, a filter 4-4, and a rubber ring 4-5; the pipe head 4-1 is fixedly connected to the drainage cuff 1-4 through the hoop 4-2; the water pumping pipe 4-3 is connected to the end of the pipe head 4-1 away from the drainage cuff 1-4; and, a rubber ring 4-5 is provided between the pipe head 4-1 and the water pumping pipe 4-3, and the filter 4-4 is provided on the inner side of the rubber ring 4-5 between the pipe head 4-1 and the water pumping pipe 4-3; the end of the water pumping pipe 4-3 away from the pipe head 4-1 is connected to a water pump, and the water pump can extract moisture from the blown mortar 2 in the bag body 1-1. Specifically, the pipe head 4-1 and the water pump pipe 4-3 are fixed together by a mechanical connection, and the filter screen 4-4 is pressed between the pipe head 4-1 and the water pump pipe 4-3, which facilitates the replacement of the filter screen 4-4. With this solution, the excess water in the filling mortar is extracted by the air pump, and the filter screen 4-4 ensures that most of the soil particles in the filling mortar are not lost when the filling mortar passes through the drainage channel, which helps to accelerate the consolidation speed of the sand and soil in the sand-filled tube bag 1 and improve the overall strength of the sand-filled tube bag 1.

[0058] In some embodiments, the blown mortar 2 is made of filling sand by means of reamer suction or rake suction; and the blown mortar 2 is filled into the cavity of the bag body 1-1 through the grouting pipe 3, thereby improving the sand filling efficiency of the sand-filled tube bag 1.

[0059] The present invention provides a construction method for sand-filled pipe bags by hydraulic slurry in-situ pressure grouting, comprising the following steps:

[0060] (1) After measuring the positioning pile by a positioning device such as GPS or theodolite, the bag body 1-1 of the sand-filled tube bag 1 is fixed on the positioning pile;

[0061] (2) Insert the grouting pipe 3 and the drainage channel into the grouting cuff 1-3 and the drainage cuff 1-4 respectively, and fix them. Connect the water pump outside the drainage channel;

[0062] (3) Using the blowing filling technology, the filling sand is made into filling mortar at the construction site, and the filling mortar is poured into the sand-filled tube bag 1 through the grouting pipe 3. When the filling mortar in the sand-filled tube bag 1 reaches a certain amount, the water pump is started to extract the excess water in the filling mortar in the sand-filled tube bag 1 through the drainage pipe 4 until the filling of the sand-filled tube bag 1 is completed;

[0063] (5) Remove the grouting pipe 3 and the drainage pipe 4, and sew the grouting cuffs 1-3 and the drainage cuffs 1-4 to ensure that the blown mortar 2 in the sand-filled pipe bag 1 does not flow out;

[0064] (6) When the sand-filled tube bag 1 needs to be dismantled, the bag body 1-1 can be quickly disassembled and assembled by removing the sewing line 1-2, and the bag body 1-1 can be recovered, rinsed and inspected for wear and tear. If the wear and tear meets the requirements of the specification, the bag body 1-1-2 can be rewoven and reused. If the inner bag 1-1-2 is seriously worn, it can be replaced and rewoven. The blown filling mortar 2 in the removed sand-filled tube bag 1 can be used for backfilling sand.

[0065] In some embodiments, in step (3), the fullness of the blown mortar 2 in the sand-filled tube bag 1 needs to be controlled within the range of 80% to 85%, and the sand content in the blown mortar 2 is controlled within the range of 70% to 85%.

[0066] The same or similar parts between the various embodiments in this specification can be referred to each other, and each embodiment focuses on the differences from other embodiments.

[0067] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A sand-filled tube bag for hydraulic slurry in-situ pressure grouting, characterized by: The sand-filled tube bag (1) comprises a bag body (1-1), and a plurality of grouting cuffs (1-3) and a plurality of drainage cuffs (1-4) provided on the bag body (1-1); a cavity is provided in the bag body (1-1), and the cavity is filled with blown mortar (2); each of the grouting cuffs (1-3) is connected to a grouting pipe (3), and each of the drainage cuffs (1-4) is connected to a drainage pipe (4).

2. The sand-filled tube bag for hydraulic slurry in-situ pressure grouting according to claim 1, characterized in that: The bag body (1-1) comprises a first bag body (1-1) and a second bag body (1-1), and the first bag body (1-1) and the second bag body (1-1) are sewn together using a single-line sewing method, and a sewing line (1-2) is formed between the first bag body (1-1) and the second bag body (1-1).

3. The sand-filled tube bag for hydraulic slurry in-situ pressure grouting according to claim 1, characterized in that: The bag body (1-1) comprises an outer bag (1-1-1) and an inner bag (1-1-2) arranged from outside to inside, and the outer surface of the inner bag (1-1-2) is in contact with the inner surface of the outer bag (1-1-1); and the inner bag (1-1-2) and the outer bag (1-1-1) are sewn together at the grouting cuff (1-3) and the drainage cuff (1-4).

4. The sand-filled tube bag for hydraulic slurry in-situ pressure grouting according to claim 3, characterized in that: The outer bag (1-1-1) is made of woven geotextile; the inner bag (1-1-2) is made of non-woven geotextile.

5. The sand-filled tube bag for hydraulic slurry in-situ pressure grouting according to claim 1, characterized in that: The plurality of grouting cuffs (1-3) include multiple groups of grouting cuffs (1-3), each group of grouting cuffs (1-3) includes multiple grouting cuffs (1-3); the plurality of drainage cuffs (1-4) include multiple groups of drainage cuffs (1-4), each group of drainage cuffs (1-4) includes multiple drainage cuffs (1-4); and a group of drainage cuffs (1-4) is provided between every two groups of grouting cuffs (1-3).

6. The sand-filled tube bag for hydraulic slurry in-situ pressure grouting according to claim 5, characterized in that: Each group of grouting cuffs (1-3) comprises a plurality of grouting cuffs (1-3) extending along the width direction of the bag body (1-1); each group of drainage cuffs (1-4) comprises a plurality of drainage cuffs (1-4) extending along the width direction of the bag body (1-1).

7. The sand-filled tube bag for hydraulic slurry in-situ pressure grouting according to claim 1, characterized in that: The drainage pipe (4) comprises a pipe head (4-1), a hoop (4-2), a water pump pipe (4-3), a filter (4-4), and a rubber ring (4-5); the pipe head (4-1) is fixedly connected to the drainage cuff (1-4) through the hoop (4-2); the water pump pipe (4-3) is connected to an end of the pipe head (4-1) away from the drainage cuff (1-4); a rubber ring (4-5) is provided between the pipe head (4-1) and the water pump pipe (4-3), and the filter (4-4) is provided between the pipe head (4-1) and the water pump pipe (4-3) and located inside the rubber ring (4-5); the end of the water pump pipe (4-3) away from the pipe head (4-1) is connected to a water pump, and the water pump can extract moisture from the blown mortar (2) in the bag body (1-1).

8. The sand-filled tube bag for hydraulic slurry in-situ pressure grouting according to claim 1, characterized in that: The blown mortar (2) is made of filling sand by means of reaming or raking; and the blown mortar (2) is filled into the cavity of the bag body (1-1) through the grouting pipe (3).

9. A construction method for sand-filled tube bags with hydraulic slurry in-situ pressure grouting, characterized by: The following steps are involved: (1) After determining the positioning pile by a positioning device such as GPS or theodolite, the bag body (1-1) of the sand-filled tube bag (1) is fixed on the positioning pile; (2) Insert the grouting pipe (3) and the drainage channel into the grouting cuff (1-3) and the drainage cuff (1-4) respectively, and fix them, and connect the drainage channel to a water pump; (3) using a blowing filling technique to prepare filling sand into filling mortar at the construction site, and pouring the filling mortar into the sand-filled tube bag (1) through the grouting pipe (3); after the filling mortar in the sand-filled tube bag (1) reaches a certain amount, starting a water pump to extract excess water from the filling mortar in the sand-filled tube bag (1) through the drainage pipe (4) until the filling of the sand-filled tube bag (1) is completed; (5) removing the grouting pipe (3) and the drainage pipe (4), and sewing the grouting cuff (1-3) and the drainage cuff (1-4) to ensure that the blown mortar (2) in the sand-filled pipe bag (1) does not flow out; (6) When the sand-filled tube bag (1) needs to be dismantled, the bag body (1-1) can be quickly dismantled and assembled by removing the sewing line (1-2), and the bag body (1-1) can be recovered, rinsed, and checked for wear and tear. If the wear and tear meets the requirements of the specification, the bag can be rewoven and reused. If the inner bag (1-1-2) is seriously worn, it can be replaced and rewoven. The blown filling mortar (2) in the removed sand-filled tube bag (1) can be used for backfilling sand.

10. The construction method of sand-filled tube bag for hydraulic grouting in-situ pressure grouting according to claim 9, characterized in that: In the step (3), the fullness of the blown mortar (2) in the sand-filled tube bag (1) needs to be controlled within the range of 80% to 85%, and the sand content in the blown mortar (2) needs to be controlled within the range of 70% to 85%.

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