A curtain grouting water plugging device

Abstract

This invention relates to the field of water plugging, specifically to a curtain grouting water plugging device, comprising multiple sets of metal hoses, each with a hollow hose on its outer surface. A push sleeve is located on one side of each metal hose, at one end of the hollow hose. A second metal hose is movably connected inside the push sleeve. A sealing plate, movably fitted onto the inner wall of the push sleeve, is fixedly connected to one end of the second metal hose. A conical push groove is formed on the outer surface of the second metal hose. When the first metal hose extends into the crack, the higher water level inside the crack enters the push sleeve. When the water comes into contact with and mixes with the effervescent tablets, a chemical reaction occurs, causing the effervescent tablets to rapidly generate a large amount of carbon dioxide gas. Because the one-way horn orifice is horn-shaped (larger on the outside, smaller on the inside), the amount of gas released from inside the push sleeve through the one-way horn orifice is effectively reduced.

Description

Technical Field

[0001] This invention belongs to the field of water plugging technology, specifically a curtain grouting water plugging device. Background Technology

[0002] During mining operations, water seepage and inrush are inevitable problems. These typically arise because the mine's sidewalls contain interconnected water-conducting rock fissures or karst channels. Diagenesis and weathering processes cause rock fracturing, increasing permeability and allowing groundwater to accumulate or become conduits for groundwater flow. Therefore, curtain grouting devices are commonly used to prevent groundwater seepage. This involves injecting grout into the rock fissures or karst channels, allowing the grout to permeate, diffuse, solidify, and harden along these channels, thus forming a curtain to prevent groundwater seepage along the main water inrush channels between the water source and the mine or mining area.

[0003] In current technologies, the existing crack grouting and water plugging methods use straight-tube pipes for the grout pumps. This only seals the edges of the crack entrance with cement and cannot effectively fill the deeper parts of the crack with cement mortar. An excessively thin cement layer can cause subsequent water leakage. In addition, this grouting method cannot completely fill the deep parts of the crack and some narrow gaps at the crack edges with cement mortar.

[0004] Therefore, the present invention provides a curtain grouting and water plugging device. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: The curtain grouting and water plugging device of the present invention includes multiple sets of metal hoses, hollow hoses are provided on the outer surface of the multiple sets of metal hoses, a push sleeve is provided on one side surface of the metal hose and at one end of the hollow hose, a second metal hose is movably sleeved inside the push sleeve, a sealing plate is fixedly connected to one end surface of the second metal hose and movably sleeved on the inner wall of the push sleeve, a conical push groove is opened on the outer surface of the second metal hose, an effervescent tablet is provided inside the push sleeve and fits against the outer surface of the sealing plate, a one-way horn hole is opened on the outer surface of the push sleeve, a conical spike rod is movably sleeved on the outer surface of the hollow hose, and one end of the conical spike rod is movably overlapped on the inner wall of the conical push groove; The outer surface of the first metal hose is provided with a plastic film wrapped around the outer surface of the hollow hose, and the plastic film is wrapped with polyurethane II. The outer surface of the first metal hose is wrapped with a wear-resistant film disposed on the outer surfaces of polyurethane II and the plastic film.

[0007] Preferably, two sets of fixing sealing rings are fixedly connected to the outer surface of the metal hose and at the two side edges, and the inner wall surface of the wear-resistant film is disposed on the outer surface of the fixing sealing rings.

[0008] Preferably, the outer surface of the fixed sealing ring is provided with a water inlet hole, and the outer surface of the push sleeve is disposed on the outer surface of the fixed sealing ring.

[0009] Preferably, the outer surface of the hollow hose has a slot, the inner wall of the slot is fixedly connected to a limiting plate, and the outer surface of the cone-shaped rod is movably sleeved on the surface of the limiting plate.

[0010] Preferably, a snap-fit ​​bracket is fixedly connected to one end surface of the metal hose, a push rod is fixedly connected to the outer surface of the snap-fit ​​bracket, and an inner liner grouting pipe is movably sleeved on the outer surface of the push rod.

[0011] Preferably, the top surface of the inner liner grouting pipe and one side edge is provided with a grout inlet, the inner wall of the inner liner grouting pipe is fixedly connected to a limiting frame, and the outer surface of the push rod is movably sleeved on the outer surface of the limiting frame.

[0012] Preferably, the outer surface of the other end of the inner liner grouting pipe is provided with a grout discharge port, and an inclined groove is provided on the outer surface of the inner liner grouting pipe at the edge of the grout discharge port. The outer surface of the first metal hose is movably sleeved on the inner wall of the inclined groove.

[0013] Preferably, the outer surface of the inner liner grouting pipe is movably sleeved with a grouting pipe, the outer surface of the grouting pipe is movably sleeved with two sets of support plates, and the outer surface of the grouting pipe is fixedly connected with polyurethane.

[0014] Preferably, the outer surface of the grouting pipe is provided with a water inlet hole, and a drain pipe is provided on the outer surface of the grouting pipe at the middle position of the two sets of support plates.

[0015] Preferably, multiple guide tubes are fixedly connected to the outer surface of the grouting pipe, and an injector disposed on the outer surface of the support plate is fixedly connected to the other end of the guide tube.

[0016] The beneficial effects of this invention are as follows: 1. The curtain grouting and water-blocking device of the present invention, when the metal hose one extends into the crack, the higher water source inside the crack will enter the push sleeve. When the water source comes into contact with and mixes with the effervescent tablet, a chemical reaction will occur, causing the effervescent tablet to rapidly generate a large amount of carbon dioxide gas. Since the one-way horn hole is horn-shaped with a larger outer diameter and a smaller inner diameter, it can effectively reduce the gas inside the push sleeve from being discharged through the one-way horn hole. The accumulated gas will continuously expand inside the push sleeve, thereby pushing the sealing plate and the metal hose two to move on the inner surface of the push sleeve and the hollow hose. At this time, the conical push groove on the surface of the metal hose two slides on one end of the cone rod and squeezes the cone rod outward. After the spike expands outward, it will pierce the plastic film, causing the polyurethane II inside the plastic film to leak out and mix with the external water source. The polyurethane II that absorbs water will gradually expand and push up the wear-resistant film, so that the surface of the wear-resistant film comes into contact with the rock layer inside the crack. This increases the friction and anti-slip force between the metal hose and the rock wall. When the cement mortar is discharged, the reverse thrust generated when the cement mortar is sprayed will cause the metal hose to shake too much inside the crack. Reducing the shaking of the metal hose will cause the cement mortar to be over-mixed, which will cause too much water to seep into the cement mortar. The diluted cement mortar will delay the cement setting time and thus prolong the working time. 2. The curtain grouting and water-blocking device of the present invention pushes the push rod, causing the metal hose on one end of the push rod to follow the inclined groove on the surface of the inner grouting pipe, so that the metal hose is pushed out in an inclined manner. The multi-range and multi-angle compression can extend the metal hose to different positions inside the crack. Moreover, the metal hose has a certain degree of flexibility and wear resistance. When the metal hose moves inside the crack, it can extend to a deeper part of the crack. When one end of the metal hose is blocked by the rock and cannot move forward, the metal hose will bend in place. The bent metal hose will not bend due to external pressure or corner pressure during the extension process, thus affecting the pipeline's delivery of cement grout. Multiple metal hoses extend in different directions and angles, which can expand the delivery range and angle of cement grout. 3. In the curtain grouting and water-blocking device of the present invention, after the inner liner grouting pipe and the grout outlet extend to the main area inside the crack, multiple metal hoses are used to increase the extension to different positions inside the crack. At this time, a cement pump is used to inject cement mortar into the inlet, and cement mortar is injected into the crack. The cement mortar inside the inner liner grouting pipe will be injected into the crack through the grout outlet. Since the output of the grout outlet is much smaller than the input of the grout outlet, the excess cement mortar will accumulate inside the inner liner grouting pipe. The high-pressure cement mortar will be injected into the crack through the multiple metal hoses. By conveying cement mortar into the depths of cracks, cement mortar can be delivered simultaneously at different angles and locations. This reduces the risk of excessive water dilution of the cement mortar inside the crack due to single-point delivery, which affects the subsequent solidification of the cement mortar. In contrast, traditional straight-cylinder delivery can only seal the edges of the crack entrance with cement. The high water pressure inside the crack will affect the extension of the cement mortar into the depths of the crack, making it impossible to effectively fill the deep parts of the crack. This results in a serious waste of raw materials and insufficient filling of the crack, making it very easy for water to seep in again later. 4. The curtain grouting and water-blocking device of the present invention utilizes the combination of traditional straight-tube and flexible hose conveying. Through the synergistic cooperation of the straight-tube and flexible hose conveying pipes, a composite grouting channel with low-resistance deep flow and flexible conformal shallow flow is constructed. The straight-tube effectively reduces the conveying resistance of high-viscosity fine mortar, ensuring that the grout can reach the deep part of the crack and effectively grout the large space of the crack. The flexible hose, with its flexibility, adapts to the complex direction and branches of the crack, and performs targeted and effective grouting at narrow crack locations. This achieves piston-like pushing and filling of mortar from deep to shallow, effectively solving the technical problems of incomplete filling of deep parts, overflow of shallow grout, and dead corner residue in traditional grouting, and significantly improving the density and integrity of crack repair. Attached Figure Description

[0017] The invention will now be further described with reference to the accompanying drawings.

[0018] Figure 1 This is a perspective view of the present invention; Figure 2 This is a three-dimensional cross-sectional view of the grouting pipe in this invention; Figure 3 This is a cross-sectional perspective view of the metal flexible tube in this invention; Figure 4 This is a cross-sectional perspective view of the metal flexible tube in this invention. Figure 5 This is a three-dimensional cross-sectional view of the polyurethane expansion in this invention; Figure 6 This is a perspective cross-sectional view of the push sleeve in this invention; Figure 7 This is the invention for Figure 6 Enlarged 3D view of a specific area; Figure 8 This is the invention for Figure 6 Enlarged 3D view of the conical pusher groove; Figure 9 This is a sectional perspective view of the unidirectional horn hole in this invention.

[0019] In the diagram: 11. Support plate; 111. Grouting pipe; 112. Water inlet; 113. Polyurethane I; 114. Drain pipe; 115. Guide pipe; 116. Injector; 12. Inner liner grouting pipe; 121. Grout inlet; 122. Limiting frame; 123. Grout outlet; 124. Push rod; 125. Clip-on frame; 126. Metal hose I; a1. Fixed sealing ring; a2. Water inlet fine hole; a3. Wear-resistant membrane; a4. Polyurethane II; a5. Plastic film; a6. Hollow hose; a61. Groove; a62. Limiting plate; a63. Conical spike rod; a7. Push sleeve; a71. Metal hose II; a72. Conical push groove; a73. Sealing plate; a74. One-way horn hole; a75. Effervescent tablet. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0021] like Figures 4 to 9 As shown, an embodiment of the present invention provides a curtain grouting and water-blocking device, comprising multiple sets of metal hoses 126, hollow hoses a6 on the outer surface of the multiple sets of metal hoses 126, a push sleeve a7 on one side surface of the metal hoses 126 and at one end of the hollow hoses a6, a metal hose a71 movably sleeved inside the push sleeve a7, a sealing plate a73 fixedly connected to one end of the metal hose a71 and movably sleeved on the inner wall of the push sleeve a7, a conical push groove a72 on the outer surface of the metal hose a71, an effervescent tablet a75 attached to the outer surface of the sealing plate a73 inside the push sleeve a7, a one-way horn hole a74 on the outer surface of the push sleeve a7, and a conical spike rod a63 movably sleeved on the outer surface of the hollow hoses a6, one end of the conical spike rod a63 movably overlapping the inner wall of the conical push groove a72; The outer surface of the metal hose 126 is provided with a plastic film a5 wrapped around the outer surface of the hollow hose a6. The plastic film a5 is filled with polyurethane a4. The outer surface of the metal hose 126 is covered with a wear-resistant film a3 on the outer surfaces of the polyurethane a4 and the plastic film a5. Two sets of fixing sealing rings a1 are fixedly connected to the outer surface of the metal hose 126 at the two side edges. The inner wall of the wear-resistant film a3 is set on the outer surface of the fixing sealing ring a1. The outer surface of the fixing sealing ring a1 has a water inlet hole a2. The outer surface of the push sleeve a7 is set on the outer surface of the fixing sealing ring a1. The outer surface of the hollow hose a6 has a slot a61. The inner wall of the slot a61 is fixedly connected to a limiting plate a62. The outer surface of the cone bar a63 is movably sleeved on the surface of the limiting plate a62.

[0022] When the metal hose 126 extends into the crack, the higher water level inside the crack will enter the push sleeve a7. When the water comes into contact with and mixes with the effervescent tablet a75, a chemical reaction occurs, causing the effervescent tablet a75 to rapidly produce a large amount of carbon dioxide gas. Because the one-way horn hole a74 is horn-shaped with a larger outer diameter and a smaller inner diameter, it can effectively reduce the amount of gas inside the push sleeve a7 from being discharged through the one-way horn hole a74. The accumulated gas will continuously expand inside the narrow push sleeve a7, thereby pushing the sealing plate a73 and the metal hose 171 to move on the inner surfaces of the push sleeve a7 and the hollow hose a6. At this time, the conical push groove a72 on the surface of the metal hose 171 slides on one end of the conical rod a63, squeezing the conical rod a63 outward. After the spike a63 expands outward, it will pierce the plastic film a5, causing the polyurethane 2 a4 inside the plastic film a5 to leak out and mix with the external water source. The water-absorbing polyurethane 2 a4 will gradually expand and push up the wear-resistant film a3, so that the surface of the wear-resistant film a3 comes into contact with the rock layer inside the crack. This increases the friction and anti-slip force between the metal hose 126 and the rock wall. When the cement mortar is discharged, the reverse thrust generated by the cement mortar spray will cause the metal hose 126 to shake excessively inside the crack. Reducing the shaking of the metal hose 126 will cause excessive agitation of the cement mortar, which will lead to excessive water seepage into the cement mortar. The diluted cement mortar will delay the cement setting time and thus prolong the working time.

[0023] like Figure 3As shown, a snap-fit ​​bracket 125 is fixedly connected to one end of the metal hose 126. A push rod 124 is fixedly connected to the outer surface of the snap-fit ​​bracket 125. An inner liner grouting pipe 12 is movably sleeved on the outer surface of the push rod 124. A grout inlet 121 is provided on the top surface of the inner liner grouting pipe 12 and at one edge. A limit bracket 122 is fixedly connected to the inner wall of the inner liner grouting pipe 12. The outer surface of the push rod 124 is movably sleeved on the outer surface of the limit bracket 122. A grout outlet 123 is provided on the outer surface of the other end of the inner liner grouting pipe 12. An inclined groove is provided on the outer surface of the inner liner grouting pipe 12 and at the edge of the grout outlet 123. The outer surface of the metal hose 126 is movably sleeved on the inner wall of the inclined groove.

[0024] Pushing the push rod 124 causes the metal hose 126 on one end of the push rod 124 to follow the inclined groove on the surface of the inner liner grouting pipe 12, so that the metal hose 126 is pushed out in an inclined manner. The multi-range and multi-angle compression allows the metal hose 126 to extend to different positions inside the crack. Moreover, the metal hose 126 is a metal hose, which has a certain degree of flexibility and wear resistance. When the metal hose 126 moves inside the crack, it can extend to a deeper part of the crack. When one end of the metal hose 126 is blocked by rocks and cannot move forward, the metal hose 126 will bend in place. The bent metal hose 126 will not be folded due to external pressure or corner pressure during the extension process, thus affecting the pipeline's delivery of cement grout. Multiple metal hoses 126 extend in different directions and angles, which can expand the delivery range and angle of cement grout. After the inner liner grouting pipe 12 and the grout discharge port 123 extend into the main area inside the crack, multiple metal hoses 126 are used to extend the grouting to different locations inside the crack. At this time, a cement pump is used to inject cement mortar into the inlet port 121 and grout the crack. The cement mortar inside the inner liner grouting pipe 12 will be injected into the crack through the grout discharge port 123. Since the output of the grout discharge port 123 is much smaller than the input of the inlet port 121, excess cement mortar will accumulate inside the inner liner grouting pipe 12. The high-pressure cement mortar will be injected through the multiple metal hoses. The 126 conveyor can simultaneously deliver cement mortar to different angles and positions, reducing the risk of excessive water dilution of the cement mortar inside the crack due to single-point delivery, which affects the later solidification of the cement mortar. In contrast, traditional straight-cylinder conveyors can only seal the edge of the crack entrance with cement. The high water pressure inside the crack will affect the cement mortar from extending deeper into the crack, making it impossible to effectively fill the deep part of the crack. This will result in serious waste of raw materials and insufficient filling of the crack, making it easy for water to seep in again later. By combining traditional straight-tube and flexible conveying methods, a composite grouting channel with low-resistance deep flow and flexible conformability in shallow sections is constructed. The straight-tube effectively reduces the conveying resistance of high-viscosity fine mortar, ensuring that the grout can reach the deep part of the crack and effectively grout large spaces within the crack. The flexible tube, with its flexibility, adapts to the complex direction and branches of the crack, enabling targeted and effective grouting in narrow crack locations. This achieves piston-like pushing and filling of mortar from deep to shallow, effectively solving the technical problems of incomplete filling in deep sections, grout overflow in shallow sections, and dead corner residue in traditional grouting, significantly improving the density and integrity of crack repair.

[0025] like Figures 1 to 2 As shown, an injection pipe 111 is movably sleeved on the outer surface of the inner liner injection pipe 12. Two sets of support plates 11 are movably sleeved on the outer surface of the injection pipe 111. A polyurethane 113 is fixedly connected to the outer surface of the injection pipe 111. A water inlet hole 112 is opened on the outer surface of the injection pipe 111. A drain pipe 114 is set on the outer surface of the injection pipe 111 and located in the middle of the two sets of support plates 11. Multiple guide pipes 115 are fixedly connected to the outer surface of the injection pipe 111. The other end of the guide pipe 115 is fixedly connected to an injector 116 set on the outer surface of the support plate 11.

[0026] Drilling is performed on the leaking cracks inside the tunnel to make the holes reach the leak point. Then, the support plate 11 is moved to the leaking crack inside the tunnel and positioned on the surface of the tunnel crack by the limiting plate on the outer surface of the support plate 11. Then, the grouting pipe 111 is pushed into the borehole. At this time, the water inside the borehole will enter the grouting pipe 111 through the water inlet 112. Subsequently, the accumulated water is discharged through the drain pipe 114. The continuously discharged water will effectively reduce the water pressure inside the crack, so that when the cement mortar is filled into the crack later, the cement mortar will not be pushed out due to excessive water pressure. At this time, when the polyurethane-113 on the outer surface of the grouting pipe 111 comes into contact with the water source, it will expand continuously due to the water absorption and expansion properties of polyurethane-113, thereby filling the gap between the grouting pipe 111 and the crack, and limiting the position of the grouting pipe 111 so that the grouting pipe 111 will not shake too much when it is used. While draining the excess water source, the syringe 116 injects a polysaccharide thickener into the guide pipe 115. When the polysaccharide thickener comes into contact with the water source, it will make the water source at the crack entrance viscous. The viscous water source can effectively prevent the water source inside the crack from continuing to leak out through the crack. The internal volume of the push-press syringe 116. Due to the incompressibility of the polysaccharide thickener, the mechanical thrust applied by the piston is evenly transmitted to the polysaccharide thickener within the sealed cavity, causing its internal pressure to rise sharply. When the internal pressure exceeds the external atmospheric pressure resistance, the high-pressure liquid is ejected at an extremely high speed.

[0027] Working principle: A borehole is drilled into the leaking crack inside the tunnel, extending deep into the leak point. The support plate 11 is then moved to the leaking crack inside the tunnel, and positioned on the surface of the crack by a limiting plate on its outer surface. The grouting pipe 111 is then pushed into the borehole. Water from inside the borehole enters the grouting pipe 111 through the inlet hole 112, and is subsequently drained through the drain pipe 114. Upon contact with the water, the polyurethane coating 113 on the outer surface of the grouting pipe 111 reacts with the polyurethane... Due to the water absorption and swelling properties of polyurethane-113, the polyurethane-113 will continuously expand, thereby filling the gap between the grouting pipe 111 and the crack, limiting the position of the grouting pipe 111, so that the grouting pipe 111 will not shake too much when in use. While draining excess water, a polysaccharide thickener is injected into the guide pipe 115 with the syringe 116. When the polysaccharide thickener comes into contact with water, it will make the water at the crack entrance viscous. The viscous water can effectively prevent the water inside the crack from continuing to leak out through the crack. At this time, the push rod 124 is pushed, and the metal hose 126 on one end of the push rod 124 follows the inclined groove on the surface of the inner liner grouting pipe 12, so that the metal hose 126 is pushed out in an inclined manner. The multi-range and multi-angle compression can make the metal hose 126 extend to different positions inside the crack. Moreover, the metal hose 126 is a metal hose, which has a certain degree of flexibility and wear resistance. When the metal hose 126 moves inside the crack, it can extend to a deeper part of the crack. When one end of the metal hose 126 is blocked by the rock and cannot move forward, the metal hose 126 will bend in place. The bent metal hose 126 will not be folded due to external pressure or corner pressure during the extension process, thus affecting the pipeline's delivery of cement grout. Multiple metal hoses 126 extend in different directions and angles, which can expand the delivery range and angle of cement grout. After the inner liner grouting pipe 12 and the grout outlet 123 extend to the main area inside the crack, multiple metal hoses 126 are used to extend the grouting pipe to different positions inside the crack. At this time, cement mortar is injected into the inner liner grouting pipe 12 in conjunction with the grout inlet 121. The cement mortar inside the inner liner grouting pipe 12 will be injected into the crack through the grout outlet 123. Since the output of the grout outlet 123 is much smaller than the input of the grout inlet 121, the excess cement mortar will be transported into the depth of the crack through multiple metal hoses 126. Cement mortar can be transported at different angles and positions at the same time, reducing the risk of excessive water dilution of cement mortar inside the crack due to single-point cement mortar delivery, which will affect the later cement mortar solidification. Traditional straight-tube delivery can only seal the edge of the crack entrance with cement, and cannot effectively fill the depth of the crack with cement mortar. Too thin a cement layer will cause subsequent water leakage. Once the cement mortar has filled to a certain extent, the push rod 124 slowly pulls back the metal hose 126, causing the metal hose 126 to gradually be pulled out of the filled cement mortar. The cement mortar continuously delivered by the metal hose 126 during the slow pull-back will refill the gaps left when the metal hose 126 is pulled out, preventing the metal hose 126 from leaving holes in the cement mortar and providing a flow path for the water source.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A curtain grouting and water-blocking device, comprising multiple sets of metal flexible hoses (126), characterized in that: A hollow hose (a6) is provided on the outer surface of the multiple sets of metal hose one (126). A push sleeve (a7) is provided on one side surface of the metal hose one (126) and at one end of the hollow hose (a6). A metal hose two (a71) is movably sleeved inside the push sleeve (a7). A sealing plate (a73) is fixedly connected to one end surface of the metal hose two (a71) and movably sleeved on the inner wall of the push sleeve (a7). A conical push groove (a72) is opened on the outer surface of the metal hose two (a71). An effervescent tablet (a75) is provided inside the push sleeve (a7) and fits against the outer surface of the sealing plate (a73). A one-way horn hole (a74) is opened on the outer surface of the push sleeve (a7). A conical spike rod (a63) is movably sleeved on the outer surface of the hollow hose (a6). One end of the conical spike rod (a63) is movably overlapped on the inner wall of the conical push groove (a72). The outer surface of the first metal hose (126) is provided with a plastic film (a5) wrapped around the outer surface of the hollow hose (a6), and the plastic film (a5) is wrapped with polyurethane II (a4). The outer surface of the first metal hose (126) is wrapped with a wear-resistant film (a3) ​​provided on the outer surfaces of polyurethane II (a4) and plastic film (a5).

2. The curtain grouting and water-blocking device according to claim 1, characterized in that: Two sets of fixing seal rings (a1) are fixedly connected to the outer surface of the metal hose (126) and at the two side edges. The inner wall of the wear-resistant film (a3) ​​is disposed on the outer surface of the fixing seal rings (a1).

3. The curtain grouting and water-blocking device according to claim 2, characterized in that: The outer surface of the fixed sealing ring (a1) is provided with a water inlet hole (a2), and the outer surface of the push sleeve (a7) is disposed on the outer surface of the fixed sealing ring (a1).

4. The curtain grouting and water-blocking device according to claim 1, characterized in that: The outer surface of the hollow flexible tube (a6) is provided with a slot (a61), and a limiting plate (a62) is fixedly connected to the inner wall of the slot (a61). The outer surface of the cone-shaped rod (a63) is movably sleeved on the surface of the limiting plate (a62).

5. A curtain grouting and water-blocking device according to claim 1, characterized in that: One end of the metal hose (126) is fixedly connected to a snap-fit ​​bracket (125), and a push rod (124) is fixedly connected to the outer surface of the snap-fit ​​bracket (125). The inner liner grouting pipe (12) is movably sleeved on the outer surface of the push rod (124).

6. A curtain grouting and water-blocking device according to claim 5, characterized in that: The inner liner grouting pipe (12) has a grout inlet (121) on its top surface and at one edge position. The inner wall of the inner liner grouting pipe (12) is fixedly connected to a limiting frame (122), and the outer surface of the push rod (124) is movably sleeved on the outer surface of the limiting frame (122).

7. A curtain grouting and water-blocking device according to claim 5, characterized in that: The outer surface of the other end of the inner liner grouting pipe (12) is provided with a grout discharge port (123). An inclined groove is provided on the outer surface of the inner liner grouting pipe (12) at the edge of the grout discharge port (123). The outer surface of the metal hose (126) is movably sleeved on the inner wall of the inclined groove.

8. A curtain grouting and water-blocking device according to claim 5, characterized in that: The outer surface of the inner liner grouting pipe (12) is movably sleeved with a grouting pipe (111), the outer surface of the grouting pipe (111) is movably sleeved with two sets of support plates (11), and the outer surface of the grouting pipe (111) is fixedly connected with polyurethane (113).

9. A curtain grouting and water-blocking device according to claim 8, characterized in that: The outer surface of the grouting pipe (111) is provided with a water inlet hole (112), and a drain pipe (114) is provided on the outer surface of the grouting pipe (111) and located in the middle of the two sets of support plates (11).

10. A curtain grouting and water-blocking device according to claim 8, characterized in that: The outer surface of the grouting pipe (111) is fixedly connected to multiple guide pipes (115), and the other end of the guide pipe (115) is fixedly connected to an injector (116) disposed on the outer surface of the support plate (11).

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