Grouting stopping device and grouting pipe assembly
The airbag sealing structure of the grout-stopping device solves the problem of grout overflow during the grouting process of the anchor bolt hole, achieves sealing inside the anchor bolt hole, improves the grout diffusion effect and the anchor bolt fixing effect, and enhances the versatility and reliability of the system.
Patent Information
- Application Number
- CN202520233210.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-14
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-02-14
AI Technical Summary
During the grouting process of anchor bolt holes, the gaps between the anchor bolt, grouting pipe and anchor bolt hole cause grout to overflow, affecting the diffusion of grout to the surrounding soil or rock mass, and thus affecting the anchor bolt fixing effect.
A grout-stopping device is adopted, including an outer airbag, a first inner airbag, and a second inner airbag. Through the airbag's sealed connection with the anchor bolt hole, the grouting pipe, and the anchor bolt, the inner wall of the anchor bolt hole is sealed with the outer wall of the main body, the inner wall of the grouting pipe channel is sealed with the outer wall of the grouting pipe, and the inner wall of the anchor bolt channel is sealed with the outer wall of the anchor bolt, thus limiting the leakage of grout.
It improves the sealing effect of grout in the anchor bolt hole, allowing the grout to fully diffuse into the soil or rock mass around the anchor bolt, enhancing the anchor bolt's fixing effect, and adapting to grouting pipes and anchor bolts of different diameters, thus improving the system's versatility and reliability.
Smart Images
Figure CN223724645U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to grouting construction technical field, specifically, relate to a kind of stop grouting device and grouting pipe assembly. BACKGROUND
[0002] At present, anchor rod grouting plays a vital role in slope treatment and surrounding rock reinforcement. It not only improves the stability of anchor rod, but also improves the integrity of slope and cavern, and enhances safety.
[0003] In related art, when grouting is performed at the anchor rod hole, the anchor rod is first placed in the hole, and then grouting is performed by inserting the grouting pipe. However, the inventors have found that, in the grouting process, due to the existence of pores between the anchor rod, the grouting pipe and the anchor rod hole, the grouting liquid in the anchor rod hole is easy to overflow, which may affect the effect of the grouting liquid diffusing to the soil or rock body around the anchor rod, and further affect the fixing effect of the anchor rod. SUMMARY
[0004] The problem solved by the utility model is how to improve the grouting liquid plugging effect in the anchor rod hole.
[0005] In a first aspect, the utility model provides a kind of stop grouting device, including basic body, outer air bag, first inner air bag and second inner air bag;The outer air bag is sleeved in the basic body;The inner wall of the outer air bag is sealingly connected with the outer side wall of the basic body, and the outer wall of the outer air bag is configured to be in abutment sealing with the inner wall of anchor rod hole after inflation;The basic body is provided with grouting pipe passage for grouting pipe to pass through and anchor rod passage for anchor rod to pass through;The first inner air bag is arranged in the grouting pipe passage;The first inner air bag is annular, and the outer wall of the first inner air bag is sealingly connected with the inner wall of the grouting pipe passage, and the inner wall of the first inner air bag is configured to be in abutment sealing with the grouting pipe after inflation;The second inner air bag is arranged in the anchor rod passage;The second inner air bag is annular, and the outer wall of the second inner air bag is sealingly connected with the inner wall of the anchor rod passage, and the inner wall of the second inner air bag is configured to be in abutment sealing with the anchor rod after inflation.
[0006] Optionally, the basic body is provided with a first air port;The outer air bag, the first inner air bag and the second inner air bag all pass through the first air port to enter air or exhaust.
[0007] Optionally, the outer air bag, the first inner air bag and the second inner air bag share one first air port.
[0008] Optionally, the first air port has multiple, and multiple first air ports are respectively communicated with the outer air bag, the first inner air bag and the second inner air bag.
[0009] Optionally, the slurry stopping device further comprises a gas filling and discharging valve; the first gas port is provided with the gas filling and discharging valve.
[0010] Optionally, the slurry stopping device further comprises a third inner air bag; the basic body is further provided with a slurry return pipe channel through which the slurry return pipe passes; the third inner air bag is arranged in the slurry return pipe channel; the third inner air bag is annular, the outer wall of the third inner air bag is sealingly connected with the inner wall of the slurry return pipe channel, and the inner wall of the third inner air bag is configured to abut and seal with the slurry return pipe after being inflated.
[0011] Optionally, the slurry stopping device further comprises a valve; the basic body is provided with a gas discharging channel penetrating in the extension direction of the grouting pipe channel; the valve is arranged at the gas outlet of the gas discharging channel.
[0012] Optionally, the basic body is an elastic member.
[0013] Optionally, the slurry stopping device further comprises a fixing member configured to connect the basic body and the grouting pipe.
[0014] In the second aspect, the utility model provides a grouting pipe assembly, including grouting pipe and the slurry stopping device as described above, the grouting pipe passes through the grouting pipe channel of the slurry stopping device, and with the basic body of the slurry stopping device fixed connection.
[0015] Compared with the prior art, the utility model has the beneficial effects that:
[0016] In the structure of the grout stopping device, the outer air bag is sleeved on the basic body, the inner wall of the outer air bag is sealingly connected with the outer side wall of the basic body, and the outer wall of the outer air bag is configured to abut and seal with the inner wall of the anchor rod hole after being inflated. Thus, after sufficient gas is filled in the outer air bag, the outer air bag can realize the sealing between the inner wall of the anchor rod hole and the outer side wall of the basic body, so as to limit the grout in the anchor rod hole from overflowing between the two. The basic body is provided with a grouting pipe passage through which the grouting pipe passes and an anchor rod passage through which the anchor rod passes. The first inner air bag is arranged in the grouting pipe passage, the first inner air bag is annular, the outer wall of the first inner air bag is sealingly connected with the inner wall of the grouting pipe passage, and the inner wall of the first inner air bag is configured to abut and seal with the grouting pipe after being inflated. Thus, after sufficient gas is filled in the first inner air bag, the first inner air bag can realize the sealing between the inner wall of the grouting pipe passage and the outer side wall of the grouting pipe, so as to limit the grout in the anchor rod hole from overflowing between the two. The second inner air bag is arranged in the anchor rod passage, the second inner air bag is annular, the outer wall of the second inner air bag is sealingly connected with the inner wall of the anchor rod passage, and the inner wall of the second inner air bag is configured to abut and seal with the anchor rod after being inflated. Thus, after sufficient gas is filled in the second inner air bag, the second inner air bag can realize the sealing between the inner wall of the anchor rod passage and the outer side wall of the anchor rod, so as to limit the grout in the anchor rod hole from overflowing between the two. In summary, the grout stopping device of the utility model can realize the sealing between the inner wall of the anchor rod hole and the outer side wall of the basic body, the sealing between the inner wall of the grouting pipe passage and the outer side wall of the grouting pipe, and the sealing between the inner wall of the anchor rod passage and the outer side wall of the anchor rod during the grouting process, thereby improving the grout plugging effect in the anchor rod hole, enabling the grout to fully spread around the anchor rod, and further improving the fixing effect of the anchor rod. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 Structure of the grout stopping device of the utility model embodiment Figure 1 ;
[0018] Figure 2 Use state of the grout stopping device of the utility model embodiment Figure 1 ;
[0019] Figure 3 Use state of the grout stopping device of the utility model embodiment Figure 2 ;
[0020] Figure 4 Structure of the grout stopping device of the utility model embodiment Figure 2 .
[0021] BRIEF DESCRIPTION OF DRAWINGS:
[0022] 1, base body; 11, grouting pipe passage; 12, anchor rod passage; 13, first air port; 14, exhaust passage; 15, third inner air bag; 16, back grouting pipe passage; 2, outer air bag; 3, first inner air bag; 4, second inner air bag; 5, air filling and discharging valve; 6, valve; 7, grouting pipe; 8, anchor rod; 9, anchor rod hole; 10, fixing member. DETAILED DESCRIPTION
[0023] In order to make the above objectives, characteristics and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings. Although some embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms, and should not be interpreted as being limited to the embodiments described herein, on the contrary, these embodiments are provided to make the present application more thorough and complete. It should be understood that the drawings and embodiments of the present application are only for illustrative purposes, and are not intended to limit the scope of protection of the present application.
[0024] The term "comprising" and its variants as used herein are open-ended, i.e. "including, but not limited to"; the term "based on" means "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". Related definitions of other terms will be given in the following description. It should be noted that the "first", "second", etc. concepts mentioned in the present application are only used to distinguish different devices, modules or units, and are not intended to limit the functions performed by these devices, modules or units or their mutual dependency.
[0025] It should be noted that the modification of "one" or "multiple" mentioned in the present application is illustrative and not limiting, and those skilled in the art should understand that unless otherwise explicitly stated in the context, it should be understood as "one or more".
[0026] An embodiment of this utility model provides a grout-stopping device, including a base body 1, an outer airbag 2, a first inner airbag 3, and a second inner airbag 4; the outer airbag 2 is sleeved on the base body 1; the inner wall of the outer airbag 2 is sealed to the outer wall of the base body 1, and the outer wall of the outer airbag 2 is configured to abut and seal against the inner wall of the anchor bolt hole 9 after inflation; the base body 1 is provided with a grouting pipe channel 11 for the grouting pipe 7 to pass through and an anchor bolt channel 12 for the anchor bolt 8 to pass through; the first inner airbag 3 is disposed in the grouting pipe hole 9. The first inner airbag 3 is annular, and its outer wall is sealed to the inner wall of the grouting pipe channel 11. The inner wall of the first inner airbag 3 is configured to abut and seal against the grouting pipe 7 after inflation. The second inner airbag 4 is disposed in the anchor bolt channel 12. The second inner airbag 4 is annular, and its outer wall is sealed to the inner wall of the anchor bolt channel 12. The inner wall of the second inner airbag 4 is configured to abut and seal against the anchor bolt 8 after inflation.
[0027] Specifically, the shape of basic body 1 can be a cylinder, cuboid, or other shapes, etc., without restriction, depending on the actual needs. For example... Figure 1 , 2 As shown, the basic body 1 is cylindrical in shape. The basic body 1 is provided with a grouting pipe channel 11 through which the grouting pipe 7 passes and an anchor bolt channel 12 through which the anchor bolt 8 passes. That is to say, both the grouting pipe channel 11 and the anchor bolt channel 12 penetrate the basic body 1.
[0028] like Figure 2 , 3 As shown, the outer airbag 2 is fitted onto the base body 1. The inner wall of the outer airbag 2 is sealed to the outer wall of the base body 1. The outer wall of the outer airbag 2 can be sealed against the inner wall of the anchor bolt hole 9 after inflation. In this way, after sufficient gas is filled into the outer airbag 2, the outer airbag 2 can achieve a seal between the inner wall of the anchor bolt hole 9 and the outer wall of the base body 1, thereby limiting the slurry in the anchor bolt hole 9 from overflowing between the two. The first inner airbag 3 is disposed inside the grouting pipe channel 11. The first inner airbag 3 is annular, and its outer wall is sealed to the inner wall of the grouting pipe channel 11. The inner wall of the first inner airbag 3 can be sealed to the grouting pipe 7 after inflation. Thus, after sufficient gas is filled into the first inner airbag 3, the first inner airbag 3 can achieve a seal between the inner wall of the grouting pipe channel 11 and the outer wall of the grouting pipe 7, thereby limiting the grout in the anchor bolt hole 9 from overflowing between the two. The second inner airbag 4 is disposed inside the anchor bolt channel 12. The second inner airbag 4 is annular, and its outer wall is sealed to the inner wall of the anchor bolt channel 12. The inner wall of the second inner airbag 4 can be sealed to the anchor bolt 8 after inflation. Thus, after sufficient gas is filled into the second inner airbag 4, the second inner airbag 4 can achieve a seal between the inner wall of the anchor bolt channel 12 and the outer wall of the anchor bolt 8, thereby limiting the grout in the anchor bolt hole 9 from overflowing between the two.
[0029] In summary, the grout stopping device can realize the sealing between the inner wall of the anchor rod hole 9 and the outer side wall of the basic body 1, the sealing between the inner wall of the grouting pipe channel 11 and the outer side wall of the grouting pipe 7, and the sealing between the inner wall of the anchor rod channel 12 and the outer side wall of the anchor rod 8 during the grouting process, thereby improving the grout plugging effect in the anchor rod hole 9, enabling the grout to fully diffuse around the soil or rock mass of the anchor rod 8, and further improving the fixing effect of the anchor rod 8.
[0030] Meanwhile, since the grout stopping device of the embodiment is matched with the grouting pipe 7 and the anchor rod 8, it can adapt to grouting pipes 7 and anchor rods 8 of different diameters, and has stronger universality.
[0031] Optionally, the basic body 1 is provided with a first air port 13; the outer air bag 2, the first inner air bag 3, and the second inner air bag 4 all take in air or discharge air through the first air port 13.
[0032] In an embodiment, the outer air bag 2, the first inner air bag 3, and the second inner air bag 4 share one first air port 13.
[0033] Specifically, as shown in Figure 1 、 2 the first air port 13 is in communication with the outer air bag 2, and the outer air bag 2 is in communication with the first inner air bag 3 and the second inner air bag 4 respectively.
[0034] In this optional embodiment, the outer air bag 2, the first inner air bag 3, and the second inner air bag 4 share one first air port 13, which greatly simplifies the structure and pipeline layout of the air bag system. This integrated design reduces the number of air ports, reduces the complexity of the system and the potential risk of leakage, and is convenient for manufacturing, installation, and maintenance, and improves the overall reliability. In addition, by sharing the air port, the air bags can be inflated or deflated cooperatively, optimizing the inflation sequence and pressure distribution of the air bags, thereby better meeting the use requirements and improving the performance and user experience of the system.
[0035] In another embodiment, the first air port 13 has a plurality of first air ports 13, and the plurality of first air ports 13 are in communication with the outer air bag 2, the first inner air bag 3, and the second inner air bag 4 respectively.
[0036] In this optional embodiment, the plurality of first air ports 13 are respectively connected to the outer air bag 2, the first inner air bag 3, and the second inner air bag 4. This design can achieve independent control and precise adjustment of each air bag. By providing a separate air port for each air bag, the inflation and deflation process of each air bag can be more flexibly controlled, thereby better meeting the use requirements in different scenarios. For example, when rapid response or fine adjustment of air bag pressure is required, independent air ports can achieve more efficient inflation and deflation operations.
[0037] Optionally, the slurry stopping device further comprises a gas charging and discharging valve 5; the first air port 13 is provided with the gas charging and discharging valve 5.
[0038] Specifically, the gas charging and discharging valve 5 can be fixed on the first air port 13 by means of threads, buckles, or sealing rings, etc., to ensure its tight connection with the first air port 13 and prevent air leakage. For example, the valve seat is fixed at the first air port 13, and the valve cover is connected with the valve seat by threads or buckles to form a sealed gas charging and discharging channel.
[0039] In this optional embodiment, the gas charging and discharging valve 5 can achieve precise control of the air bag inflation and deflation process, ensuring that the air bag works within the appropriate pressure range, thereby improving the safety and reliability of the system. Secondly, through the automatic control function of the gas charging and discharging valve 5, rapid inflation and deflation of the air bag can be achieved, improving work efficiency. In addition, the gas charging and discharging valve 5 can also cooperate with other systems (such as pressure sensors, controllers) to realize real-time monitoring and automatic adjustment of the air bag pressure, further optimizing the use performance of the air bag.
[0040] Optionally, the slurry stopping device further comprises a third inner air bag 15; the basic body 1 is further provided with a slurry return pipe passage 16 through which the slurry return pipe passes; the third inner air bag 15 is arranged in the slurry return pipe passage 16; the third inner air bag 15 is annular, the outer wall of the third inner air bag 15 is in sealing connection with the inner wall of the slurry return pipe passage 16, and the inner wall of the third inner air bag 15 is configured to be in abutting sealing with the slurry return pipe after inflation.
[0041] It should be understood that in part of the grouting process, the slurry will be recovered through the slurry return pipe, therefore, the basic body 1 needs to cooperate with the slurry return pipe and realize the sealing between the two.
[0042] Specifically, as shown in Figure 4 the basic body 1 is further provided with a slurry return pipe passage 16 through which the slurry return pipe passes, that is, the slurry return pipe passage 16 penetrates the basic body 1. The third inner air bag 15 is arranged in the slurry return pipe passage 16; the third inner air bag 15 is annular, the outer wall of the third inner air bag 15 is in sealing connection with the inner wall of the slurry return pipe passage 16, and the inner wall of the third inner air bag 15 is configured to be in abutting sealing with the slurry return pipe after inflation.
[0043] In this optional embodiment, after the third inner air bag 15 is filled with sufficient gas, the third inner air bag 15 can achieve sealing between the inner wall of the back grouting pipe channel 16 and the outer side wall of the back grouting pipe, so as to limit the overflow of the grout in the anchor hole 9 from the two.
[0044] Optionally, as shown in Figure 1 , 2 , the grout stopping device further comprises a valve 6; the basic body 1 is provided with a gas exhaust channel 14 penetrating along the extension direction of the grouting pipe channel 11; and the valve 6 is arranged at the gas outlet of the gas exhaust channel 14.
[0045] Specifically, the valve 6 can be a gate valve, a stop valve, or a ball valve, etc., which is not limited here and is determined according to actual needs, and mainly serves to close or open the gas outlet of the gas exhaust channel 14.
[0046] In this optional embodiment, before grouting operation is performed, the valve 6 is first operated to open the gas outlet of the corresponding gas exhaust channel 14, and then grout is injected into the anchor hole 9 through the grouting pipe 7. Until the grout starts to overflow from the gas outlet of the gas exhaust channel 14, the valve 6 is operated again to block the gas outlet of the gas exhaust channel 14. In this way, the air in the anchor hole 9 can be exhausted, which can effectively improve the situation that the grout filling is insufficient or cavities are formed due to air residues, so as to improve the compactness and quality of grouting. Secondly, when the grout overflows from the exhaust hole, the operator can intuitively judge that the air in the hole has been exhausted, and at this time, the gas outlet of the gas exhaust channel 14 is blocked, which can effectively prevent the continuous loss of grout, save materials and ensure the grouting efficiency. This operation mode not only optimizes the grouting process, but also enhances the bonding strength of the anchor rod 8 and the surrounding medium, providing a strong guarantee for the safety and stability of the subsequent engineering structure.
[0047] Optionally, the basic body 1 is an elastic member.
[0048] Specifically, the elastic member can be made of rubber or other elastic materials. In use, the elastic member can achieve good sealing performance through its elastic deformation, that is, even if there is a slight unevenness or wear on the sealing surface, the sealing effect can be maintained through elastic compensation. Secondly, the high resilience and fatigue resistance of the elastic member make it less likely to be permanently deformed in long-term use, which can effectively reduce mechanical wear and tear and prolong the service life.
[0049] Optionally, as shown in Figure 3 , the grout stopping device further comprises a fixing member 10 configured to connect the basic body 1 and the grouting pipe 7.
[0050] Specifically, the fixing member 10 can be a ring or a buckle, etc. Here is not limited, according to the actual demand. In the alternative embodiment, after the basic body 1 and the grouting pipe 7 are fixed by using the fixing member 10, the basic body 1 and the grouting pipe 7 can be combined into one, on the one hand, it is convenient for subsequent removal, on the other hand, it can prevent the grouting device from accidentally jumping out under high pressure, and the safety is improved.
[0051] In order to facilitate the understanding of the scheme, the following will take the basic body 1 provided with the grouting pipe passage 11 and the anchor rod passage 12 as an example, and the construction process of the grouting device of the embodiment will be described in detail, as follows:
[0052] (1) First, the grouting pipe 7 is inserted into the grouting pipe passage 11, and the basic body 1 and the grouting pipe 7 are fixed by the fixing member 10, so that they are combined into one.
[0053] (2) Then, the grouting device is placed at the hole opening part of the anchor rod hole 9 which is drilled in advance, and the anchor rod 8 is inserted into the anchor rod passage 12. The inflation valve 5 is adjusted to the inflation mode, the pressure pump is started, all the air bags are inflated, and the pressure value inside the air bag is obtained in real time through the externally connected pressure gauge, and the inflation is stopped when the predetermined pressure value is reached, at this time, the basic body 1 is tightly combined with the grouting pipe 7 and the anchor rod 8.
[0054] (3) The valve 6 is operated to open the air outlet of the exhaust passage 14, and the grouting into the anchor rod hole 9 is started through the grouting pipe 7; when the grout begins to overflow from the air outlet of the exhaust passage 14, the air outlet of the exhaust passage 14 is blocked.
[0055] (4) Continue to grout, at this time, the grouting pressure in the anchor rod hole 9 will rise to the preset grouting pressure. During the grouting process, the pressure gauge should be checked in time, and the pressure should be supplemented in time if the pressure decreases.
[0056] (5) After the grouting is completed, the grouting pressure is released, and the inflation valve 5 is adjusted to the deflation mode to release the inflation pressure.
[0057] (6) The grouting device is taken out from the anchor rod hole 9.
[0058] (7) Repeat steps (2) to (6) to grout the next anchor rod hole 9.
[0059] The embodiment of the utility model also provides a grouting pipe assembly which comprises a grouting pipe 7 and a grouting device as described above; the grouting pipe 7 passes through the grouting pipe passage 11 of the grouting device and is fixedly connected with the basic body 1 of the grouting device.
[0060] In the optional embodiment, after the grouting operation of one anchor rod hole 9 is completed, all the air bags of the grouting stopping device are deflated, then the grouting pipe 7 and the grouting stopping device are taken out, and then the grouting operation of the next anchor rod hole 9 is carried out, which is convenient and fast.
[0061] The grouting pipe assembly of the embodiment has the same beneficial effects as the grouting stopping device relative to the prior art, and thus will not be described here again.
[0062] Although the utility model discloses as above, the protection scope of the utility model is not limited to this only.The person skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model, and these changes and modifications will all fall into the protection scope of the utility model.
Claims
1. A flow check device, characterized in that The device comprises a basic body (1), an outer air bag (2), a first inner air bag (3) and a second inner air bag (4); the outer air bag (2) is sleeved on the basic body (1); the inner wall of the outer air bag (2) is sealingly connected with the outer wall of the basic body (1), and the outer wall of the outer air bag (2) is configured to abut and seal with the inner wall of the anchor rod hole (9) after being inflated; the basic body (1) is provided with a grouting pipe passage (11) through which the grouting pipe (7) passes and an anchor rod passage (12) through which the anchor rod (8) passes; the first inner air bag (3) is arranged in the grouting pipe passage (11); the first inner air bag (3) is annular, the outer wall of the first inner air bag (3) is sealingly connected with the inner wall of the grouting pipe passage (11), and the inner wall of the first inner air bag (3) is configured to abut and seal with the grouting pipe (7) after being inflated; the second inner air bag (4) is arranged in the anchor rod passage (12); the second inner air bag (4) is annular, the outer wall of the second inner air bag (4) is sealingly connected with the inner wall of the anchor rod passage (12), and the inner wall of the second inner air bag (4) is configured to abut and seal with the anchor rod (8) after being inflated.
2. The device of claim 1, wherein The basic body (1) is provided with a first air port (13); the outer air bag (2), the first inner air bag (3) and the second inner air bag (4) all take in or discharge air through the first air port (13).
3. The device of claim 2, wherein The outer air bag (2), the first inner air bag (3) and the second inner air bag (4) share one first air port (13).
4. The device of claim 2, wherein The first air port (13) has a plurality of first air ports (13) respectively communicating with the outer air bag (2), the first inner air bag (3) and the second inner air bag (4).
5. A flow check device according to any one of claims 2 to 4, wherein Further comprising a gas filling and discharging valve (5); the first air port (13) is provided with the gas filling and discharging valve (5).
6. The device of claim 1, wherein Further comprising a third inner air bag (15); the basic body (1) is further provided with a back grouting pipe passage (16) through which a back grouting pipe passes; the third inner air bag (15) is arranged in the back grouting pipe passage (16); the third inner air bag (15) is annular, the outer wall of the third inner air bag (15) is sealingly connected with the inner wall of the back grouting pipe passage (16), and the inner wall of the third inner air bag (15) is configured to abut and seal with the back grouting pipe after being inflated.
7. The device of claim 1, wherein Further comprising a valve (6); the basic body (1) is provided with a gas discharging passage (14) penetrating along the extension direction of the grouting pipe passage (11); the valve (6) is arranged at the air outlet of the gas discharging passage (14).
8. The device of claim 1, wherein, The basic body (1) is an elastic member.
9. The device of claim 1, wherein, Further comprising a fixing member (10) configured to connect the basic body (1) and the grouting pipe (7).
10. A grout tube assembly characterized in that, The device comprises a grouting pipe (7) and the grouting stopping device according to any one of claims 1 to 9; the grouting pipe (7) passes through the grouting pipe passage (11) of the grouting stopping device and is fixedly connected with the basic body (1) of the grouting stopping device.