Sand filling pipe bag for hydraulic slurry making in-situ pressure filling
Through hydraulic slurry in-situ pressing and blowing technology, combined with the double-layer structure of high-strength braided geotextile and non-woven geotextile, the problems of low filling efficiency and large single-layer structure loss are solved, and efficient and durable sand filling pipe bags are achieved.
Patent Information
- Application Number
- CN202422225408.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-09-11
AI Technical Summary
The filling method of existing sand-filled pipe bags is inefficient, the single-layer bag body structure is large, the cost is high, and it is difficult to effectively control the concentration and internal pressure of the mortar.
The sand filling pipe bag that uses hydraulic slurry in situ pressing is directly poured into the mortar by blowing filling, and the water in the mortar is extracted by a pump to control the internal pressure and avoid rupture. The sand-filled pipe bag adopts a double-layer structure, the outer layer is high-strength braided geotextile, and the inner layer is non-woven geotextile, which can be quickly disassembled and assembled by sewing threads.
It improves the sand filling efficiency of the sand filling pipe bag, extends the service life, reduces construction costs, enhances the overall strength of the bag body, and effectively saves sand and soil resources.
Smart Images
Figure CN222975774U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sand-filled pipe bags, in particular to a sand-filled pipe bag for in-situ pressure grouting with hydraulic slurry making. Background Art
[0002] A sand-filled pipe bag is a tubular bag made of a material that filters water but not sand, and has good anti-wave impact ability and anti-water pressure ability. Due to its low cost, easy removal and other advantages, it is widely used in projects such as building dikes, underwater buildings, constructing artificial islands, and construction cofferdams.
[0003] During the filling process of the sand-filled pipe bag, the filling efficiency, the concentration of the mortar in the bag body, and the strength of the bag body after filling are the key factors affecting its actual engineering effect. However, at present, the filling method of the sand-filled pipe bag mostly uses a sand suction pump to pour the filling sand into each sleeve of the pipe bag one by one, and then relies on the water permeability of the pipe bag itself to drain the water in the mortar. When the drainage rate is insufficient, usually only the method of patting the bag body can be used to accelerate the drainage process, and the construction efficiency is low.
[0004] Moreover, the existing sand-filled pipe bag has a single-layer bag body structure, with large losses during use, frequent replacement is required, and the cost is high.
[0005] Therefore, in order to further optimize the related technology of the sand-filled pipe bag, improve the construction efficiency of the sand-filled pipe bag and improve its overall strength, there is an urgent need for a sand-filled pipe bag for in-situ pressure grouting with hydraulic slurry making that is simple and efficient in construction. Summary of the Utility Model
[0006] (1) Technical Problems to be Solved
[0007] The technical problem to be solved by the utility model is to provide a sand-filled pipe bag for in-situ pressure grouting with hydraulic slurry making, which injects filling mortar into the sand-filled pipe bag by means of hydraulic filling. During this process, there is no need to control the concentration of the filling mortar through a mechanical device, and it is directly poured into the sand-filled pipe bag. And the excess water in the filling mortar is extracted through a drainage channel connected to an air extraction pump. This process can improve the sand filling efficiency of the sand-filled pipe bag, and at the same time, the air extraction pump controls the pressure inside the sand bag, avoiding the rupture of the sand-filled pipe bag due to excessive pressure.
[0008] (2) Technical Solutions
[0009] The solution adopted by the utility model to solve the above technical problems is a sand-filled pipe bag for in-situ pressure grouting with hydraulic slurry making. The sand-filled pipe bag includes a bag body, and a plurality of grouting sleeves and a plurality of drainage sleeves arranged on the bag body; a cavity is arranged inside the bag body, and the cavity is filled with hydraulic filling mortar; each grouting sleeve is connected with a grouting pipe, and each drainage sleeve is connected with a drainage pipe.
[0010] Specifically, the sand-filled pipe bag is a tubular bag as a whole.
[0011] With the above solution, the filling mortar is injected into the sand-filled pipe bag by hydraulic filling. During this process, there is no need to control the concentration of the filling mortar through mechanical devices. It is directly poured into the sand-filled pipe bag, and the excess water in the filling mortar is extracted through the drainage channel by connecting an air extraction pump. This process can improve the sand filling efficiency of the sand-filled pipe bag. At the same time, the air extraction pump controls the pressure inside the sand bag, avoiding the rupture of the sand-filled pipe 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 by a single-thread sewing method, and a sewing line is formed between the first bag body and the second bag body.
[0013] Specifically, there shall be no joint seams in the main stress direction of the first bag body and the second bag body.
[0014] With the above solution, the formation of the sewing line can achieve the rapid disassembly and assembly of the bag body by removing the sewing line. Among them, the blown mortar can be used for sand filling at the construction site, and the bag body of the sand-filled pipe 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 is in contact with the inner surface of the outer bag; 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 anti-aging woven geotextile, which can effectively improve the overall strength of the sand-filled pipe bag; the inner bag is made of non-woven geotextile with good soil retention property, and its soil retention property can effectively reduce the wear of the soil particles in the bag on the woven geotextile of the outer bag; and it is applicable to the production of large-volume sand-filled pipe bags.
[0018] Specifically, the inner bag is made of non-woven geotextile, which can play a role in isolating sand and gravel during use to prevent the sand and gravel in the filling mortar from cutting through the outer bag after penetrating the inner bag. During use, the sand and gravel in the filling mortar are isolated by the inner bag, and only the moisture is discharged from the outer bag after being discharged from the inner bag. The outer bag is made of high-strength anti-aging woven geotextile, which improves the service life of the outer bag. The non-woven geotextile used for the inner bag has a low cost. Since the outer bag and the inner bag are sewn together by sewing threads, when inspecting the sand-filled tube bag, the bag body can be quickly disassembled and assembled by removing the sewing threads, the bag body can be recycled, the bag body can be rinsed and the loss degree of the inner bag can be inspected. If it meets the specification requirements, it can be sewn again and reused. If the inner bag is severely damaged, it can be replaced, which improves the service life of the sand-filled tube bag and greatly saves costs. Compared with the single-layer bag body of the sand-filled tube bag in the prior art, the cost is greatly saved.
[0019] In some embodiments, the several grouting cuffs include multiple groups of grouting cuffs, and each group of grouting cuffs includes multiple grouting cuffs; the several drainage cuffs include multiple groups of drainage cuffs, and each group of drainage cuffs includes multiple drainage cuffs; and, one group of drainage cuffs is arranged between every two groups of grouting cuffs.
[0020] In some embodiments, each group of grouting cuffs includes multiple grouting cuffs extending along the width direction of the bag body; each group of drainage cuffs includes multiple drainage cuffs extending along the width direction of the bag body.
[0021] In some embodiments, the grouting cuffs are arranged in the central areas of the long side midline and the two side edges of the sand-filled tube bag, so that the filling 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 pump water pipe, a filter screen, and a rubber ring; the pipe head is fixedly connected to the drainage cuff through the hoop; the pump water pipe is connected to one end of the pipe head away from the drainage cuff; and, a rubber ring is arranged between the pipe head and the pump water pipe, and the filter screen is arranged inside the rubber ring between the pipe head and the pump water pipe; a water pump is connected to the end of the pump water pipe away from the pipe head, and the water pump can extract the moisture of the hydraulic fill mortar in the bag body.
[0023] Specifically, the pipe head and the pump water pipe are fixed together by a mechanical connection method, and the filter screen is pressed between the pipe head and the pump water pipe, which is convenient for replacing the filter screen.
[0024] With the above solution, the excess moisture in the filling mortar is extracted by an air extraction pump. The filter screen ensures that most of the soil particles in the filling mortar do not flow out when the filling mortar passes through the drainage channel, which is beneficial 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 hydraulic filling mortar is made from filling sand by means of a cutter suction dredger or a trailing suction hopper dredger; moreover, the hydraulic filling mortar is filled into the cavity of the bag through the grouting pipe, which improves the sand filling efficiency of the sand-filled pipe bag.
[0026] A construction method for a sand-filled pipe bag with in-situ pressure grouting of hydraulic slurry preparation of the present utility model comprises the following steps:
[0027] (1) After determining the positioning piles through a positioning device such as a GPS or a theodolite, fix the bag body of the sand-filled pipe bag on the positioning piles;
[0028] (2) Insert the grouting pipe and the drainage channel into the grouting cuff and the drainage cuff respectively, and complete the fixation. A water pump is connected to the outside of the drainage channel;
[0029] (3) Adopt the hydraulic filling technology to make the filling sand into filling mortar at the construction site, and pour the filling mortar into the sand-filled pipe bag through the grouting pipe. After a certain amount of filling mortar in the sand-filled pipe bag is reached, start the water pump, and pump out the excess water in the filling mortar in the sand-filled pipe bag through the drainage pipe until the filling of the sand-filled pipe bag is completed;
[0030] (5) Remove the grouting pipe and the drainage pipe, and sew the grouting cuff and the drainage cuff to ensure that the hydraulic filling mortar in the sand-filled pipe bag does not flow out;
[0031] (6) When it is necessary to remove the sand-filled pipe bag, the bag body can be quickly disassembled and assembled by removing the sewing thread, the bag body is recovered, the bag body is washed and its loss degree is checked. If it meets the specification requirements, it can be re-woven and reused; if the inner bag is severely damaged, it can be replaced and then re-woven; the hydraulic filling mortar in the removed sand-filled pipe bag can be used for backfilling sand;
[0032] In some embodiments, in step (3), the fullness degree of the hydraulic filling mortar in the sand-filled pipe bag needs to be controlled within the range of 80% - 85%, and the sand content in the hydraulic filling mortar is controlled within the range of 70% - 85%.
[0033] (III) Beneficial effects
[0034] Compared with the prior art, the present utility model designs a sand-filled pipe bag with in-situ pressure grouting of hydraulic slurry preparation,
[0035] (1) The present utility model adopts the hydraulic filling method to inject the filling mortar into the sand-filled pipe bag. In this process, there is no need to control the concentration of the filling mortar through a mechanical device, and it is directly poured into the sand-filled pipe bag. The excess water in the filling mortar is extracted through the drainage channel by connecting an air pump. This process can improve the sand filling efficiency of the sand-filled pipe bag, and at the same time, the air pump controls the pressure inside the sand bag, avoiding the rupture of the sand-filled pipe bag due to excessive pressure;
[0036] (2) The first bag body and the second bag body of the present utility model are sewn together by a single-thread 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. Among them, the blown fill mortar can be used for the sand filling 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 cuff of the present utility model is arranged in the central area of the long side midline and the two side edges of the sand-filled tube bag, so that when grouting, the filled mortar can fill the entire sand-filled tube bag as evenly as possible;
[0038] (4) The outer bag of the present utility model uses high-strength anti-aging woven geotextile, which can effectively improve the overall strength of the sand-filled tube bag; the inner bag uses non-woven geotextile material with good soil retention property, and its soil retention property can effectively reduce the wear of the soil particles in the bag on the outer bag woven geotextile; and it is applicable to the production of large-volume sand-filled tube bags;
[0039] (5) The present utility model extracts the excess water in the filled mortar through an air pump. The filter screen ensures that when the filled mortar passes through the drainage channel, most of the soil particles in the filled mortar do not flow out, which is beneficial 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. BRIEF DESCRIPTION OF THE DRAWINGS
[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0041] Figure 1 It is a structural schematic diagram of a sand-filled tube bag for in-situ pressure grouting with hydraulic slurry making of the present utility model;
[0042] Figure 2 It is another angle structural schematic diagram of a sand-filled tube bag for in-situ pressure grouting with hydraulic slurry making of the present utility model;
[0043] Figure 3 It is Figure 2 The cross-sectional view at A-A in
[0044] Figure 4 It is Figure 3 The enlarged schematic diagram at B in
[0045] Figure 5 It is a structural schematic diagram of the bag body of the present utility model.
[0046] The component names corresponding to the respective reference numerals in the figures are as follows: 1. sand-filled pipe bag; 1-1. bag body; 1-1-1. outer bag; 1-1-2. inner bag; 1-2. sewing thread; 1-3. grouting cuff; 1-4. drainage cuff; 2. hydraulic fill mortar; 3. grouting pipe; 4. drainage pipe; 4-1. pipe head; 4-2. hoop; 4-3. pump water pipe; 4-4. filter screen; 4-5. rubber ring. Detailed implementation manners
[0047] The following will, with reference to the accompanying drawings and embodiments, further describe in detail the detailed implementation manners of the present utility model. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.
[0048] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection" and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0049] The following uses specific specific examples to illustrate the implementation manners of the present application. Those skilled in the art can easily understand other advantages and effects of the present application from the content 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 implementation manners. The details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, without conflict, the following embodiments and the features in the 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 creative efforts belong to the scope protected by the present application.
[0050] It should be noted that the following describes various aspects of the embodiments within the scope of the appended claims. It should be obvious that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is illustrative only. Based on the present application, those skilled in the art should understand that one 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 aspects described herein can be used to implement the device and / or practice the method. In addition, this device and / or this method can be implemented using other structures and / or functions in addition to one or more of the aspects described herein.
[0051] It should also be noted that the illustrations provided in the following embodiments only schematically illustrate the basic concept of the present application. The components shown in the drawings only relate to those in the present application and are not drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and proportion of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.
[0052] In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the examples can be practiced without these specific details.
[0053] The following describes the technical solutions provided by each embodiment of the present application with reference to the accompanying drawings.
[0054] As Figures 1-5 shown, the present utility model provides a sand-filled pipe bag for in-situ pressure grouting of hydraulic pulp making. The sand-filled pipe bag 1 includes 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 inside the bag body 1-1, and the cavity is filled with hydraulic fill 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 pipe bag 1 is an overall tubular bag. With the above solution, the hydraulic fill mortar is injected into the sand-filled pipe bag 1 by means of hydraulic filling. During this process, there is no need to control the concentration of the hydraulic fill mortar through mechanical devices. It is directly poured into the sand-filled pipe bag 1, and the excess water in the hydraulic fill mortar is extracted through the drainage channel by an external air extraction pump. This process can improve the sand filling efficiency of the sand-filled pipe bag 1, and at the same time, the air extraction pump is used to control the pressure inside the sand bag, avoiding the rupture of the sand-filled pipe bag 1 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. 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, there shall be no joint seams in the main stress direction between the first bag body 1-1 and the second bag body 1-1. With the above solution, the formation of the sewing line 1-2 can achieve the rapid disassembly and assembly of the bag body 1-1 by removing the sewing line 1-2. Among them, the blown fill mortar 2 can be used for the sand filling at the construction site, and the bag body 1-1 of the sand-filled tube bag 1 can be recycled and reused, which is beneficial 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 attached to the inner surface of the outer bag 1-1-1; moreover, the inner bag 1-1-2 and the outer bag 1-1-1 are sewn together at the grouting cuffs 1-3 and the drainage cuffs 1-4. In some embodiments, the outer bag 1-1-1 is made of woven geotextile; 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 property, and its soil retention property 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 applicable to the production of large-volume sand-filled tube bags 1.
[0056] In some embodiments, the several grouting cuffs 1-3 include two groups of grouting cuffs 1-3, and each group of grouting cuffs 1-3 includes three grouting cuffs 1-3; the several drainage cuffs 1-4 include one group of drainage cuffs 1-4, and each group of drainage cuffs 1-4 includes three drainage cuffs 1-4; moreover, one group of drainage cuffs 1-4 is arranged 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 central area between the midline of the long side and the two side edges of the sand-filled tube bag 1, so that the filling 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 arranged between the pipe head 4-1 and the water pumping pipe 4-3, and the filter 4-4 is arranged 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 mechanical connection, and the filter screen 4-4 is pressed between the pipe head 4-1 and the water pump pipe 4-3, so as to facilitate the replacement of the filter screen 4-4. With the above scheme, the excess water in the filling mortar is extracted by the vacuum pump, wherein 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 is conducive to accelerating the consolidation speed of the sand and soil in the sand-filled tube bag 1 and improving 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 reaming or raking; 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 utility model discloses a construction method of a sand-filled tube bag for hydraulic slurry in-situ pressure grouting, comprising the following steps:
[0060] (1) After the positioning pile is determined 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 a water pump to the outside of 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 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] When it is necessary to remove the sand-filled pipe bag 1, the quick disassembly and assembly of the bag body 1-1 can be achieved by removing the sewing thread 1-2. The bag body 1-1 is recycled, washed, and its wear degree is inspected. If it meets the specification requirements, it can be re-woven and reused. If the inner bag 1-1-2 is severely worn, it can be replaced and then re-woven. The hydraulic fill mortar 2 in the removed sand-filled pipe bag 1 can be used for backfill sand.
[0065] In some embodiments, in the step (3), the fullness degree of the hydraulic fill mortar 2 in the sand-filled pipe bag 1 needs to be controlled within the range of 80% to 85%, and the sand content in the hydraulic fill mortar 2 is controlled within the range of 70% to 85%.
[0066] In this specification, the same or similar parts among the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.
[0067] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A sand-filled tube bag for hydraulic slurry in-situ pressure grouting, characterized in that: 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) arranged on the bag body (1-1); a cavity is arranged 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 is characterized by: 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 by a single-thread 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 is characterized by: 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 is characterized by: The plurality of grouting cuffs (1-3) include a plurality of groups of grouting cuffs (1-3), each group of grouting cuffs (1-3) includes a plurality of grouting cuffs (1-3); the plurality of drainage cuffs (1-4) include a plurality of groups of drainage cuffs (1-4), each group of drainage cuffs (1-4) includes a plurality of 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 screen (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 screen (4-4) is provided inside the rubber ring (4-5) between the pipe head (4-1) and the water pump pipe (4-3); a water pump is connected to an end of the water pump pipe (4-3) away from the pipe head (4-1), 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 fill mortar (2) is made of filling sand by means of reaming or raking; and the blown fill mortar (2) is filled into the cavity of the bag body (1-1) through the grouting pipe (3).