A remote grouting device

Abstract

The utility model relates to the field of grouting equipment, concretely relates to a distal grouting device, the utility model discloses that the grouting gun head is connected with the slurry source, the grouting gun head outside is equipped with the stop slurry plug, the stop slurry plug includes the inserted section and the cap, and the diameter of cap is greater than the inserted section, and the bottom of cap is equipped with a plurality of sucking disc, the inserted section is equipped with the expansion sac, the top of cap is fixedly connected with the pump body, one end of pump body communicates with sucking disc, and the other end of pump body communicates with expansion sac, and the pump body is used for the gas in sucking disc to be extracted and injects in expansion sac.

Description

Technical Field

[0001] This utility model relates to the field of grouting equipment technology, and more specifically, to a remote grouting device. Background Technology

[0002] Curtain grouting is a grouting project that injects grout into fissures and pores in rock or soil layers to form a continuous water-blocking curtain, thereby reducing seepage flow and lowering seepage pressure. Traditional borehole grouting methods use a borehole pipe or grout stopper to directly inject grout into the borehole, reinforcing the borehole opening to prevent grout leakage. However, as grouting continues for a longer period, a large amount of grout enters behind the borehole pipe, and the grout flow rate within the grouting section gradually decreases. At this point, cement particles in the grout are prone to sedimentation, potentially clogging the borehole opening, affecting grouting quality, and easily leading to "sealing" accidents. Therefore, this grouting method is only suitable for formations with large fissures and high permeability, and is not suitable for deep-hole grouting.

[0003] In the prior art, for example, patent publication number CN214993744U proposes a grouting gun head and grouting construction structure. By adding a vibration device to the bottom of the grouting pipe, the injected grout can be compacted to achieve a better gap filling effect. However, this also makes it easier for the grout to overflow from the gap between the grouting hole and the grout stop plug. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a remote grouting device for enhancing the sealing effect of the grout stop plug.

[0005] This utility model is achieved through the following technical solution: a remote grouting device, including a grouting gun head, the grouting gun head being connected to a grout source;

[0006] A grout stop plug is fitted on the outside of the grouting gun head; the grout stop plug includes an insertion section and a cap body. The diameter of the cap body is larger than that of the insertion section. Several suction cups are provided at the bottom of the cap body. An expansion bladder is fitted on the outer sleeve of the insertion section. A pump body is fixedly connected to the top of the cap body. One end of the pump body is connected to the suction cups, and the other end of the pump body is connected to the expansion bladder. The pump body is used to extract the gas in the suction cups and inject it into the expansion bladder.

[0007] Furthermore, the inflatable bladder includes an annular bladder body with several folds on the outer side of the annular bladder body.

[0008] Furthermore, a mounting plate is fixedly connected to the top of the cap, and a power supply is detachably connected to the mounting plate.

[0009] Furthermore, the grouting gun head includes an orifice tube, one end of which is connected to a feed pipe, the end of which, away from the orifice tube, is connected to a grout source, and the other end of the orifice tube is detachably connected to a grout injection pipe.

[0010] Furthermore, a control valve is installed inside the orifice pipe.

[0011] Furthermore, a control panel for operating the control valve is fixedly connected to the outside of the orifice pipe.

[0012] Furthermore, a vibration motor is installed at the bottom of the injection pipe.

[0013] Furthermore, the bottom of the injection pipe is equipped with a funnel-shaped converging injection port.

[0014] The technical solution of this utility model has at least the following beneficial effects:

[0015] Before grouting, drilling is performed to construct channels connecting the fractures within the rock or soil layer. The grouting gun head is inserted into the channel, with the grout stop plug located at the interface between the channel and the ground. The insertion section is inside the channel, the cap is outside, and the suction cup is in contact with the ground. The pump is turned on, and it extracts gas from the suction cup and injects it into the expansion bladder, creating negative pressure inside the suction cup and positive pressure inside the expansion bladder. The negative pressure inside the suction cup ensures a firm grip, making it less likely for the grout stop plug to be pushed out by the grout in the channel. The positive pressure in the expansion bladder causes it to expand, pressing against the channel and filling the gap between the insertion section and the channel, significantly increasing the pressure between the insertion section and the channel sidewall. The expansion bladder filling the gap reduces the probability of grout seeping out from the gap between the insertion section and the channel, and the increased pressure between the insertion section and the channel sidewall increases the friction between them, further reducing the probability of the grout stop plug being pushed out. Attached Figure Description

[0016] Figure 1 This is an isometric schematic diagram of an embodiment of the remote grouting device of this utility model;

[0017] Figure 2 This is a front view schematic diagram of an embodiment of the remote grouting device of this utility model;

[0018] Figure 3 This is an isometric schematic diagram from another perspective of an embodiment of the remote grouting device of this utility model;

[0019] Figure 4 This is a schematic diagram of an embodiment of the remote grouting device of this utility model.

[0020] Reference numerals: 1. Grouting gun head; 2. Grout stop plug; 3. Expansion bladder; 4. Suction cup; 5. Pump body; 6. Mounting plate; 7. Power supply; 8. Control valve; 9. Control panel; 10. Vibration motor; 101. Orifice pipe; 102. Feed pipe; 103. Grouting pipe; 201. Insertion section; 202. Cap body; 301. Annular bladder body; 302. Fold. Detailed Implementation

[0021] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] The following detailed description illustrates the specific implementation method:

[0025] Example 1:

[0026] As attached Figures 1-4 As shown: A remote grouting device includes a grouting gun head 1, which is connected to a grout source. The grout source can be a grout storage tank. The grout is pure cement slurry, and the grout is prepared centrally at the working face.

[0027] A grout-stopping plug 2 is fitted onto the outer side of the grouting gun head 1. The grout-stopping plug 2 includes an insertion section 201 and a cap 202, which are integrally formed. The diameter of the cap 202 is larger than that of the insertion section 201. Several suction cups 4 are integrally formed at the bottom of the cap 202. An expansion bladder 3 is fitted onto the outer side of the insertion section 201 and is bonded and fixed to the insertion section 201. The expansion bladder 3 includes an annular bladder 301, and several pleats 302 are provided on the outer side of the annular bladder 301. A pump body 5 is bolted to the top of the cap 202. The pump body 5 is an air pump. One end of the pump body 5 is connected to the suction cups 4, and the other end of the pump body 5 is connected to the expansion bladder 3. The pump body 5 is used to extract the gas from the suction cups 4 and inject it into the expansion bladder 3.

[0028] The grouting gun head 1 includes an orifice tube 101, one end of which is connected to a feed tube 102. The end of the feed tube 102 away from the orifice tube 101 is connected to a grout source. The other end of the orifice tube 101 is detachably connected to a grout injection tube 103. A control valve 8 is installed inside the orifice tube 101, and a control panel 9 for operating the control valve 8 is bolted to the outside of the orifice tube 101. A vibration motor 10 is bolted to the bottom of the grout injection tube 103. The bottom of the grout injection tube 103 has a funnel-shaped converging grout injection port.

[0029] When using it, first use technologies such as SAP, ground-penetrating radar, transient electromagnetic, and advanced drilling in-hole imaging to explore the development of fractures and water outlets in the construction area in multiple layers and with multiple means. Then, dynamically adjust the advanced grouting scheme according to the development of fractures and water outlets in the construction area.

[0030] A three-arm drilling rig is used to construct boreholes connecting fissures in the rock or soil. Before grouting, the borehole and fissures are cleaned with water. After drilling, the borehole position is checked to ensure it meets requirements. Once confirmed, the borehole pipe 101, grout stop plug 2, and grout injection pipe 103 are installed. The grout stop plug 2 is inserted, and the pump body 5 is started. Simultaneously, the feed pipe 102 is checked for secureness. The pump body 5 extracts gas from the suction cup 4 and injects it into the expansion bladder 3, creating negative pressure in the suction cup 4 and positive pressure in the expansion bladder 3. The negative pressure in the suction cup 4 ensures it adheres firmly to the ground, making it less likely for the grout stop plug 2 to be pushed out by the grout in the borehole. The positive pressure in the expansion bladder 3 causes it to expand, pressing against the borehole and filling the gap between the insertion section 201 and the borehole, significantly increasing the pressure between the insertion section 201 and the borehole sidewall. The expansion bladder 3 fills the gap, which can reduce the probability of slurry seeping out from the gap between the insertion section 201 and the channel. The increased pressure between the insertion section 201 and the channel sidewall can increase the friction between the insertion section 201 and the channel sidewall, reducing the probability of the slurry stop plug 2 being pushed out.

[0031] The folds 302 on the outer side of the annular bladder 301 can reduce the contact area between the annular bladder and the channel, thereby increasing the contact pressure and making the gap filling and friction force at the folds 302 stronger.

[0032] The grouting pipe 103 is detachably connected to the orifice pipe 101, allowing users to replace different models of grouting pipe 103 according to the size of the crack during operation. Different models of grouting pipe 103 have different lengths and shapes, thus reducing the possibility of grout accumulation in the first half of the duct and lowering the probability of pipe blockage. Grout is effectively delivered to the far end of the grouting hole, ensuring effective grouting at the far end and contributing to the formation of a curtain-like grout stop ring. By controlling the length of the grouting pipe 103, users can ensure a high-pressure peak at the crack, allowing the entire hole to be quickly filled with grout during grouting, improving grouting efficiency, effectively splitting and connecting cracks, and achieving high-quality grouting.

[0033] Users can control the opening and closing of control valve 8 via control panel 9, thereby controlling the opening and closing of injection pipe 103. To prevent the slurry from containing particles, large particles are filtered out through a filter screen between the slurry source mixing and slurry storage to ensure the slurry's fluidity.

[0034] The vibration motor 10 is located at the bottom of the injection pipe 103, which can apply vibration to the injected slurry, making it easier for the slurry to penetrate into the fracture. At the same time, the design of the expansion bladder 3 also makes it less likely for the slurry to overflow from the gap between the insertion section 201 and the channel due to vibration, reducing the negative impact of vibration. The funnel-shaped converging injection nozzle can concentrate the injected slurry, resulting in higher injection pressure and better fracture penetration.

[0035] Grouting should be carried out according to the principle of "thin grout splitting, thick grout injection". The water-cement ratio of the thin grout is 1:1, and the water-cement ratio of the thick grout is 0.5:1. During grouting, it is advisable to inject less thin grout and more thick grout. The grouting pressure should be kept stable during the process and gradually increased to the design pressure. When the amount of thin grout in the duct is no more than 1 L / min, continue grouting for 30 minutes and then stop grouting.

[0036] Example 2:

[0037] The difference from the above embodiment is that: a mounting plate 6 is glued and fixed to the top of the cap body 202, and a power supply 7 is detachably connected to the mounting plate 6 by bolts.

[0038] The pump body 5 and the vibration motor 10 require power supply. In special operating scenarios, it may be inconvenient to lay out power supply lines. In this case, a power supply 7 can be installed on the mounting plate 6, so that the pump body 5 and the vibration motor 10 can be electrically connected to the power supply 7 to provide the power required for the operation of the pump body 5 and the vibration motor 10. This is convenient for use in outdoor, underground and other scenarios where it is inconvenient to lay out power supply lines.

[0039] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A remote grouting device, characterized in that, Includes a grouting gun head (1), which is connected to a grout source; The grouting gun head (1) is fitted with a grout stop plug (2) on the outside; the grout stop plug (2) includes an insertion section (201) and a cap (202). The diameter of the cap (202) is larger than that of the insertion section (201). The bottom of the cap (202) is provided with several suction cups (4). The insertion section (201) is fitted with an expansion bladder (3). The top of the cap (202) is fixedly connected to a pump body (5). One end of the pump body (5) is connected to the suction cup (4), and the other end of the pump body (5) is connected to the expansion bladder (3). The pump body (5) is used to extract the gas in the suction cup (4) and inject it into the expansion bladder (3).

2. The remote grouting device according to claim 1, characterized in that, The inflatable sac (3) includes an annular sac (301), and the annular sac (301) has several folds (302) on its outer side.

3. The remote grouting device according to claim 1, characterized in that, The top of the cap body (202) is fixedly connected to a mounting plate (6), and a power supply (7) is detachably connected to the mounting plate (6).

4. The remote grouting device according to claim 1, characterized in that, The grouting gun head (1) includes an orifice pipe (101), one end of which is connected to a feed pipe (102), the end of the feed pipe (102) away from the orifice pipe (101) is connected to a grout source, and the other end of the orifice pipe (101) is detachably connected to a grouting pipe (103).

5. The remote grouting device according to claim 4, characterized in that, A control valve (8) is installed inside the orifice pipe (101).

6. The remote grouting device according to claim 5, characterized in that, A control panel (9) for operating the control valve (8) is fixedly connected to the outside of the orifice pipe (101).

7. The remote grouting device according to claim 6, characterized in that, A vibration motor (10) is installed at the bottom of the injection pipe (103).

8. The remote grouting device according to claim 7, characterized in that, The bottom of the injection pipe (103) is provided with a funnel-shaped injection port.

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