A curtain grouting orifice pipe sealing device

Abstract

This application relates to the field of engineering construction technology, and in particular to a curtain grouting orifice sealing device, comprising a sealing pipe, a limiting ring, and an expansion component; one end of the sealing pipe passes through the curtain grouting hole, and the other end of the sealing pipe extending out of the curtain grouting hole is fixedly connected to the limiting ring, and the limiting ring is coaxially fixed with the sealing pipe; the expansion component is installed on the sealing pipe, and the expansion component includes a sealing cloth for the gap between the sealing pipe and the wall of the curtain grouting hole, the sealing cloth being wrapped around the sealing pipe; the designed curtain grouting orifice sealing device, through the expansion component, facilitates the filling and sealing of the gap between the sealing pipe and the wall of the curtain grouting hole, and at the same time, through the multi-layer wrapping of the sealing cloth, facilitates the filling and sealing of the gap between the sealing pipe and the wall of the curtain grouting hole, preventing grout leakage along the gap between the sealing pipe and the wall of the curtain grouting hole, and improving the grouting quality of curtain grouting construction.

Description

Technical Field

[0001] This application relates to the field of engineering construction technology, and in particular to a curtain grouting orifice sealing device. Background Technology

[0002] Curtain grouting is a grouting project that injects grout into the fissures and pores of rock or soil layers to form a continuous water-blocking curtain, thereby reducing groundwater seepage flow and lowering seepage pressure. During the construction process of curtain grouting, firstly, anchor holes are opened using a small-diameter rotary drilling rig. After the holes in the rock or soil layer are opened, anchor rods or grouting pipes are installed. Then, high-pressure water pulse flushing is used. Finally, centralized grout preparation and grout supply in sections are adopted to realize the grouting operation of the rock or soil layer.

[0003] In the existing curtain grouting construction process, firstly, a fast-setting, highly adhesive blowout preventer filler is prepared; then, the drill rod and the drilling bit are assembled together and placed around the drilling location; holes are drilled at the corresponding positions on the water-stop curtain at the designed angle using the drill bit; the drill parts are installed into the drilling hole and the drill bit is pulled out; then the prepared grouting pipe, drill rod, and jet grouting bit are installed into the drilling hole; the prepared blowout preventer filler is filled into the drilling hole; after the blowout preventer filler solidifies, grout is injected into the cracks and pores of the rock mass or soil layer through the jet grouting bit until the cracks and pores of the rock mass or soil layer are completely filled; then the anchor bolt hole is sealed with the blowout preventer filler and plugged tightly.

[0004] In the aforementioned curtain grouting construction process, blowout preventer fillers are used to completely fill the cracks and pores in the rock mass or soil layer. However, the filler fillers are prone to leakage along the gap between the grouting pipe and the borehole, causing the blowout preventer fillers to flow out along the gap between the grouting pipe and the borehole, which affects the grouting quality of the curtain grouting construction. Utility Model Content

[0005] In order to improve the grouting quality of curtain grouting construction, this application provides a curtain grouting orifice sealing device.

[0006] This application provides a curtain grouting orifice sealing device, which adopts the following technical solution:

[0007] A curtain grouting orifice sealing device includes a sealing pipe, a limiting ring, and an expansion assembly;

[0008] One end of the sealing tube is inserted into the curtain grouting hole, and the end of the sealing tube extending out of the curtain grouting hole is fixedly connected to the limiting ring, and the limiting ring is coaxially fixed with the sealing tube.

[0009] The expansion assembly is installed on the sealing tube, and the expansion assembly includes a sealing cloth for the gap between the sealing tube and the wall of the curtain grouting hole, and the sealing cloth is wrapped around the sealing tube.

[0010] By adopting the above technical solution, during the installation of the curtain grouting orifice sealing device, firstly, the cleanliness of the inner wall of the orifice pipe is checked, and burrs and debris are removed. Then, the starting end of the sealing cloth is fixed to the end of the sealing pipe, and the sealing cloth is evenly wrapped at a 45° angle, with adjacent sealing cloth layers overlapping by 30% of their width. Next, the sealing pipe wrapped with sealing cloth is inserted into the orifice pipe to a predetermined depth. At the same time, the sealing cloth is squeezed against the wall of the curtain grouting hole to seal the gap between the sealing pipe and the wall of the curtain grouting hole. Then, the limiting ring is fully welded circumferentially to the end of the sealing pipe using argon arc welding, and grouting is then performed. After grouting is completed, the weld is cut, and the curtain grouting orifice sealing device is removed. The designed curtain grouting orifice sealing device, through the expansion component, facilitates the filling and sealing of the gap between the sealing pipe and the wall of the curtain grouting hole, improving the grouting quality of curtain grouting construction.

[0011] Optionally, the sealing cloth is wound in multiple layers, and the multiple layers of the sealing cloth form a grout-stopping section.

[0012] By adopting the above technical solution, the designed grout-stopping part, through the multi-layer wrapping of sealing cloth, facilitates the filling and sealing of the gap between the sealing pipe and the wall of the curtain grouting hole, preventing grout from leaking along the gap between the sealing pipe and the wall of the curtain grouting hole, and improving the grouting quality of curtain grouting construction.

[0013] Optionally, a thrust ring is fixedly connected to the sealing pipe, the thrust ring is located between the curtain grouting hole and the limiting ring, and one end of the sealing cloth abuts against the grout-stopping part.

[0014] By adopting the above technical solution, the designed thrust ring facilitates the limiting of the grout-stopping part, preventing the sealing cloth wrapped around the sealing tube from being blocked by the wall of the curtain grouting hole during the insertion of the sealing tube into the orifice pipe. This avoids damage to the winding state of the sealing cloth wrapped around the sealing tube by the wall of the curtain grouting hole, ensuring the sealing quality between the sealing tube and the wall of the curtain grouting hole, and thus improving the grouting quality of the curtain grouting construction.

[0015] Optionally, the thrust ring includes a fixing part and an adjusting part. The fixing part is coaxially fixed to the sealing tube, and the fixing part has a groove for engaging the end of the sealing cloth. The adjusting part is coaxially sleeved on the fixing part, and the adjusting part is threadedly connected to the fixing part.

[0016] By adopting the above technical solution, the segmented thrust ring has a fixing part that facilitates the limiting of the grout-stopping part; its adjusting part is installed in conjunction with the fixing part to limit the grout-stopping part, and at the same time, to limit the end of the sealing cloth, thereby fixing the position of the end of the sealing cloth.

[0017] Optionally, the distance between the grout-stopping part and the sealing pipe gradually increases from the end away from the thrust ring to the end closer to the thrust ring.

[0018] By adopting the above technical solution, the grout-stopping part with a gradually increasing cross-sectional diameter facilitates the gradual increase of the contact area between the sealing cloth and the wall of the curtain grouting hole during the insertion of the sealing pipe wrapped with sealing cloth into the orifice pipe. This achieves the sealing of the gap between the sealing pipe and the wall of the curtain grouting hole, thereby improving the sealing quality between the sealing pipe and the wall of the curtain grouting hole.

[0019] Optionally, a spiral groove is formed on the outer wall of the sealing tube, the grout-stopping part is embedded in the spiral groove on the side near the sealing tube, and the grout-stopping part extends out of the spiral groove on the side away from the sealing tube.

[0020] By adopting the above technical solution, the designed spiral groove facilitates the embedding of the grout-stopping part into the spiral groove on the side near the sealing pipe, increasing the friction between the sealing cloth and the sealing pipe, preventing the sealing pipe wrapped with sealing cloth from shifting along the length of the sealing pipe during installation, and improving the connection quality between the sealing cloth and the sealing pipe.

[0021] Optionally, a plurality of limiting grooves are provided on the outer wall of the sealing tube, and the plurality of limiting grooves are distributed along the length direction of the sealing tube. The side of the grout-stopping part near the sealing tube is embedded in the limiting groove, and the side of the grout-stopping part away from the sealing tube extends out of the limiting groove.

[0022] By adopting the above technical solution, the designed limiting groove facilitates the embedding of the grout-stopping part into the limiting groove on the side near the sealing pipe, increasing the friction between the sealing cloth and the sealing pipe, preventing the sealing pipe wrapped with sealing cloth from shifting along the length of the sealing pipe during installation, and improving the connection quality between the sealing cloth and the sealing pipe.

[0023] Optionally, epoxy resin tape is adhered to the side of the sealing cloth near the sealing tube.

[0024] By adopting the above technical solution, the designed epoxy resin tape improves the connection quality during the sealing cloth wrapping process, thereby preventing the sealing cloth from falling off.

[0025] Optionally, a rubber gasket is installed on the inner wall of the limiting ring.

[0026] By adopting the above technical solution, the designed rubber gasket facilitates the improvement of radial sealing performance during the connection process between the limiting ring and the grouting equipment.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. The designed curtain grouting hole sealing device uses an expansion component to facilitate filling and sealing the gap between the sealing pipe and the curtain grouting hole wall. At the same time, the multi-layer wrapping of the sealing cloth facilitates filling and sealing the gap between the sealing pipe and the curtain grouting hole wall, preventing grout leakage along the gap between the sealing pipe and the curtain grouting hole wall, and improving the grouting quality of curtain grouting construction.

[0029] 2. The designed curtain grouting orifice sealing device uses a thrust ring to limit the grout-stopping part, preventing the sealing cloth wrapped around the sealing pipe from blocking the sealing cloth wrapped around the sealing pipe during the insertion of the sealing pipe into the orifice pipe. This avoids damage to the wrapping state of the sealing cloth wrapped around the sealing pipe by the curtain grouting orifice wall, ensuring the sealing quality between the sealing pipe and the curtain grouting orifice wall, and thus improving the grouting quality of curtain grouting construction. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the curtain grouting orifice sealing device in Embodiment 1 of this application, intended to illustrate the stacking state of the sealing cloth;

[0031] Figure 2 This is a schematic diagram of the overall structure of the curtain grouting orifice sealing device in Embodiment 1 of this application, intended to illustrate the grout-stopping part;

[0032] Figure 3 This is a cross-sectional view of the curtain grouting orifice sealing device of Embodiment 1 of this application, intended to illustrate the spiral groove;

[0033] Figure 4 yes Figure 3 Enlarged schematic diagram of part A;

[0034] Figure 5 This is a cross-sectional view of the curtain grouting orifice sealing device of Embodiment 1 of this application, intended to illustrate the spiral groove;

[0035] Figure 6 yes Figure 5 Enlarged schematic diagram of part B.

[0036] Explanation of reference numerals in the attached drawings: 1. Sealing pipe; 2. Limiting ring; 3. Expansion assembly; 31. Grout stop; 311. Sealing cloth; 32. Thrust ring; 321. Adjustment part; 322. Fixing part; 323. Slot; 33. Spiral groove; 34. Limiting groove; 4. Rubber gasket. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0038] This application discloses a curtain grouting orifice sealing device.

[0039] Reference Figure 1 and Figure 2 A curtain grouting orifice sealing device includes a sealing pipe 1, a limiting ring 2, and an expansion assembly 3. In this embodiment, one end of the sealing pipe 1 passes through the curtain grouting hole, and the sealing pipe 1 extends into the curtain grouting hole and is inserted into the orifice pipe to facilitate a fixed connection between the sealing pipe 1 and the orifice pipe. The end of the sealing pipe 1 extending out of the curtain grouting hole is fixedly connected to the limiting ring 2. The sealing pipe 1 is made of 304 stainless steel and has a wall thickness of 2mm. The tolerance fit between the outer diameter of the sealing pipe 1 and the inner diameter of the orifice pipe is H9 / f8. The limiting ring 2 is coaxially fixed with the sealing pipe 1. In this embodiment, the limiting ring 2 and the sealing pipe 1 are fixedly connected. Furthermore, the limiting ring 2 and the sealing pipe 1 are circumferentially fully welded to the end of the sealing pipe 1 by argon arc welding. The limiting ring 2 is made of Q235 steel, and the bevel angle of the welding part of the sealing pipe 1 is 60°. In addition, the welding rod used in the welding process of the limiting ring 2 and the sealing pipe 1 is E308L. The limiting ring 2 and the sealing pipe 1 can also be integrally cast, as long as the limiting ring 2 can be connected to the grouting pipe of the external grouting equipment.

[0040] Reference Figure 3 and Figure 4 In addition, a rubber gasket 4 is installed on the inner wall of the limiting ring 2. In this embodiment, an installation groove is provided on the inner wall of the limiting ring 2, and the rubber gasket 4 is installed in the installation groove. Furthermore, the inner wall of the rubber gasket 4 extends out of the installation groove to improve the radial sealing performance during the connection process between the limiting ring 2 and the grouting equipment. The expansion component 3 is installed on the sealing pipe 1, and the expansion component 3 is used to seal the gap between the sealing pipe 1 and the wall of the curtain grouting hole.

[0041] Reference Figure 3 and Figure 4The expansion assembly 3 includes a thrust ring 32 and a sealing cloth 311. The sealing cloth 311 is wound around the sealing tube 1. In this embodiment, the sealing cloth 311 is wound evenly at a 45° angle, and adjacent layers of sealing cloth 311 overlap by 30% of their width, achieving layer-by-layer stacking of the later-wound sealing cloth 311 layers over the earlier-wound sealing cloth 311 layers. The sealing cloth 311 is made of high-strength polyester fabric, but fiberglass cloth can also be used, as long as it effectively seals the gap between the sealing tube 1 and the wall of the curtain grouting hole. The sealing cloth 311 is made of 600D Oxford cloth, and the thickness of a single layer of sealing cloth 311 is 0.5mm. The width of the sealing cloth 311 is 1.2 times the length of the sealing tube 1. The sealing cloth 311 is close to the sealing tube. Epoxy resin tape is adhered to one side to facilitate the fixing and adhesion of the sealing cloth 311 to the surface of the sealing tube 1. In this application, the sealing cloth 311 is wound with multiple layers. The sealing cloth 311 can be three layers, four layers, or five layers, as long as it can achieve the sealing and blocking of the gap between the sealing tube 1 and the wall of the curtain grouting hole. In this embodiment, the sealing cloth 311 is wound with four layers, and the four layers of sealing cloth 311 form the grout-stopping part 31. In this embodiment, the distance between the grout-stopping part 31 and the sealing tube 1 gradually increases from the end away from the thrust ring 32 to the end close to the thrust ring 32. The cross section of the grout-stopping part 31 is set as an isosceles trapezoid to facilitate the complete filling of the gap between the sealing tube 1 and the wall of the curtain grouting hole, thereby achieving the complete sealing of the gap between the sealing tube 1 and the wall of the curtain grouting hole.

[0042] Reference Figure 4 and Figure 5 A thrust ring 32 is fixedly connected to the sealing pipe 1. In this embodiment, the thrust ring 32 can be fixed to the sealing pipe 1 by welding or by snap-fit. The thrust ring 32 is located between the curtain grouting hole and the limiting ring 2, and one end of the sealing cloth 311 abuts against the grout-stopping part 31. The thrust ring 32 includes a fixing part 322 and an adjusting part 321. The fixing part 322 is coaxially fixed to the sealing pipe 1, and the fixing part 322 has a slot 323 for snapping the end of the sealing cloth 311. The slot 323 is opened along the axial direction of the fixing part 322. The adjusting part 321 is coaxially sleeved on the fixing part 322, and the adjusting part 321 is threadedly connected to the fixing part 322. Through the threaded connection between the adjusting part 321 and the fixing part 322, the end of the sealing cloth 311 is pressed into the slot 323, thereby fixing the end of the sealing cloth 311.

[0043] Reference Figure 4 and Figure 6In addition, to increase the friction between the sealing cloth 311 and the sealing tube 1, this application has two configuration methods. In the first method, a spiral groove 33 is provided on the outer wall of the sealing tube 1, and the grout-stopping part 31 is embedded in the spiral groove 33 on the side near the sealing tube 1, and the grout-stopping part 31 extends out of the spiral groove 33 on the side away from the sealing tube 1. In the second method, multiple limiting grooves 34 are provided on the outer wall of the sealing tube 1, and the multiple limiting grooves 34 are distributed along the length direction of the sealing tube 1. The grout-stopping part 31 is embedded in the limiting groove 34 on the side near the sealing tube 1, and the grout-stopping part 31 extends out of the limiting groove 34 on the side away from the sealing tube 1, so as to increase the friction between the sealing cloth 311 and the sealing tube 1 during the winding process of the sealing cloth 311, thereby preventing the sealing cloth 311 from sliding along the length direction of the sealing tube 1.

[0044] The implementation principle of the curtain grouting orifice sealing device in this embodiment is as follows: During the installation of the curtain grouting orifice sealing device, firstly, check the cleanliness of the inner wall of the orifice pipe and remove burrs and debris from the inner wall of the orifice pipe; then, fix the starting end of the sealing cloth 311 to the end of the sealing pipe 1, and then evenly wrap the sealing cloth 311 at a 45° angle, with adjacent layers of sealing cloth 311 overlapping by 30% of their width; then insert the sealing pipe 1 wrapped with sealing cloth 311 into the orifice pipe to a predetermined depth, while the sealing cloth 311 is pressed against the wall of the curtain grouting hole to seal the gap between the sealing pipe 1 and the wall of the curtain grouting hole; then, use argon arc welding to fully weld the limiting ring 2 circumferentially to the end of the sealing pipe 1, and then perform grouting operations. After grouting is completed, cut the weld and remove the curtain grouting orifice sealing device.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A curtain grouting orifice sealing device, characterized in that, It includes a sealing tube (1), a limiting ring (2), and an expansion assembly (3); One end of the sealing tube (1) is inserted into the curtain grouting hole, and the end of the sealing tube (1) extending out of the curtain grouting hole is fixedly connected to the limiting ring (2), and the limiting ring (2) is coaxially fixed with the sealing tube (1); The expansion assembly (3) is installed on the sealing pipe (1). The expansion assembly (3) includes a sealing cloth (311) for the gap between the sealing pipe (1) and the wall of the curtain grouting hole. The sealing cloth (311) is wrapped around the sealing pipe (1).

2. The curtain grouting orifice sealing device according to claim 1, characterized in that: The sealing cloth (311) is wound with multiple layers, and the multiple layers of the sealing cloth (311) form a grout-stopping part (31).

3. The curtain grouting orifice sealing device according to claim 2, characterized in that: A thrust ring (32) is fixedly connected to the sealing pipe (1). The thrust ring (32) is located between the curtain grouting hole and the limiting ring (2), and one end of the sealing cloth (311) abuts against the grouting part (31).

4. The curtain grouting orifice sealing device according to claim 3, characterized in that: The thrust ring (32) includes a fixing part (322) and an adjusting part (321). The fixing part (322) is coaxially fixed to the sealing tube (1), and the fixing part (322) has a groove (323) for engaging the end of the sealing cloth (311). The adjusting part (321) is coaxially sleeved on the fixing part (322), and the adjusting part (321) is threadedly connected to the fixing part (322).

5. The curtain grouting orifice sealing device according to claim 3, characterized in that: The distance between the grout stop (31) and the sealing tube (1) gradually increases from the end away from the thrust ring (32) to the end closer to the thrust ring (32).

6. The curtain grouting orifice sealing device according to claim 3, characterized in that: A spiral groove (33) is provided on the outer wall of the sealing tube (1). The grout-stopping part (31) is embedded in the spiral groove (33) on the side close to the sealing tube (1), and the grout-stopping part (31) extends out of the spiral groove (33) on the side away from the sealing tube (1).

7. The curtain grouting orifice sealing device according to claim 3, characterized in that: The sealing tube (1) has multiple limiting grooves (34) on its outer side wall. The multiple limiting grooves (34) are distributed along the length direction of the sealing tube (1). The grout-stopping part (31) is embedded in the limiting groove (34) on the side close to the sealing tube (1), and the grout-stopping part (31) extends out of the limiting groove (34) on the side away from the sealing tube (1).

8. The curtain grouting orifice sealing device according to claim 1, characterized in that: The sealing cloth (311) is bonded with epoxy resin tape on the side near the sealing tube (1).

9. The curtain grouting orifice sealing device according to claim 1, characterized in that: A rubber gasket (4) is installed on the inner wall of the limiting ring (2).

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