Grouting-stopping and hole-sealing assembly for grouting hole

Abstract

The invention relates to the technical field of grouting opening plugging, and discloses a grouting hole stopping and sealing assembly which comprises a grouting pipe, and a fixed inner pipe is arranged outside the grouting pipe in a sleeving mode; after a limiting strip of a fixed inner pipe is inserted into a limiting groove of a grouting pipe, in the downward insertion process, a rotating outer pipe is rotated through an external clamping rotating device, and in the rotating process, a scraping assembly can scrape the hole wall of a grouting hole and trim the hole wall; the gravel on the hole wall can enter the lower portion of the rotating outer pipe through the material receiving hopper, in the rotating process of the rotating outer pipe, the conveying screw blade can convey the gravel in the material receiving hopper upwards to the upper portion of the rotating outer pipe, the gravel can overflow from the rotating outer pipe and fall into the upper portion of the geotechnical cloth layer, and the upper portion of the geotechnical cloth layer is blocked; the filled broken stones do not need to be taken from other places, and in the process of inserting the broken stones into the hole channels, the gravel on the side walls of the hole channels can be scraped off, transported to the upper portion and then backfilled to the geotechnical cloth layer.

Description

Technical Field

[0001] The invention relates to the technical field of grouting port plugging, and in particular to a grouting hole stopping and sealing component for a grouting hole. Background Art

[0002] After the required slurry is injected into the grouting hole, in order to ensure the grouting effect and prevent the slurry from leaking out, it is crucial to seal the hole to achieve the effect of stopping the grouting and sealing the hole. Grouting operations are usually used in special soil projects such as foundation reinforcement, tunnel anti-seepage, and mine support. Through these engineering means, the bearing capacity of the foundation can be effectively improved, groundwater leakage can be prevented, and the overall stability of the rock and soil can be enhanced. After the grouting is completed, if the grouting hole is not properly sealed, the slurry may be lost, affecting the grouting quality, and even causing the instability of the rock and soil around the grouting hole. Therefore, the use of scientific and reasonable sealing methods to achieve strict grouting and sealing of the grouting holes is of great significance to ensure the overall quality and effect of the grouting project.

[0003] At present, the commonly used plugging technologies mainly include geotextile wrapping method and cement bag bundling method. The geotextile wrapping method is to tightly wrap the geotextile at the sealing position of the grouting hole, and use cement slurry and water glass mixed double liquid to stop the grouting. This method makes full use of the sealing performance of the geotextile and the rapid solidification characteristics of the double liquid to ensure that the grouting hole is quickly and effectively blocked. The cement bag bundling method uses the plasticity of the cement bag to form a reliable grouting and sealing barrier between the plastic pipe and the wall of the grouting hole. By filling gravel and cement mortar, this method not only achieves the strict sealing of the grouting hole, but also saves material costs and construction period. These detailed technical methods provide a strong guarantee for ensuring the overall quality and effect of the grouting project.

[0004] Chinese patent CN201567564U discloses a grout-stopping tape for grouting and sealing holes in water-rich formations, including an outer elastic water-permeable seal and a highly absorbent resin filled inside. The elastic water-permeable seal is in the shape of a long cloth bag, with a suture line every 46 cm along the length, forming independent capsules filled with highly absorbent resin. The elastic water-permeable seal can be made of spandex elastic cloth, and the highly absorbent resin can be made of bentonite-modified polyacrylic acid salt highly absorbent resin. The grout-stopping tape can be wrapped around the end of the grouting pipe during grouting. When the grouting pipe is inserted into the grouting hole, the grout-stopping tape will quickly absorb the surrounding water and expand, thereby sealing all the leaking pores. The grout-stopping tape is simple to construct and operate, low in cost, and has stable performance, and is suitable for grouting and sealing holes in water-rich formations.

[0005] The above-mentioned device uses a grouting tape to wrap around the grouting pipe. After the grouting is completed, the grouting tape can quickly absorb the surrounding moisture and expand, effectively sealing the leaking pores and achieving the purpose of stopping the grouting and sealing the hole. However, it is difficult to meet the sealing requirements by relying solely on the grouting tape to seal the hole, and the gap from the grouting tape to the top of the hole needs to be filled. The current technology usually lays a layer of crushed stone, sand, or mud as a base, and then fills the upper layer with a mixture of cement slurry and water glass until the hole mouth, so as to complete the sealing of the grouting hole. However, in this process, the filling sand and gravel need to be obtained from the outside, which is inefficient, and the hole wall below the grouting hole often has irregular protrusions due to geological differences, which is easy to cause collapse risks when the grouting pipe is inserted. Summary of the invention

[0006] Purpose of the invention: The purpose of the present invention is to provide a grouting hole stopping and sealing component for a grouting hole to solve the above-mentioned deficiencies in the prior art.

[0007] Technical solution: A grouting hole stopping and sealing component for a grouting hole, comprising a grouting pipe, the outer sleeve of the grouting pipe is provided with a fixed inner pipe, a limiting component is arranged between the fixed inner pipe and the grouting pipe, the outer sleeve of the fixed inner pipe is provided with a conveying screw blade, the outer sleeve of the conveying screw blade is provided with a rotating outer pipe, the rotating outer pipe is fixedly connected to the conveying screw blade, the length of the grouting pipe is longer than the fixed inner pipe and the rotating outer pipe, the length of the fixed inner pipe is longer than the rotating outer pipe, the outer sleeve of the fixed inner pipe is provided with a material receiving hopper, the material receiving hopper is arranged below the rotating outer pipe, a scraper assembly is arranged on the top of the material receiving hopper, and a geotextile layer is arranged on the side wall of the rotating outer pipe.

[0008] As a further description of the above technical solution: a plurality of connecting rods are fixedly installed on the top end of the rotating outer tube, and a rotating ring is fixedly installed on the top end of the connecting rods.

[0009] As a further description of the above technical solution: the scraper assembly includes a plurality of rotating shafts, and the plurality of rotating shafts are rotatably mounted on the side wall of the rotating outer tube, and a scraper ring is fixedly mounted on one end of the plurality of rotating shafts.

[0010] As a further description of the above technical solution: an end face gear ring is fixedly installed on the top of the receiving hopper, a gear is fixedly installed on the rotating shaft, and the gear and the end face gear ring are meshed with each other.

[0011] As a further description of the above technical solution: a plurality of scrapers are fixedly mounted on the scraper ring, and the plurality of scrapers are arranged in a ring array with the axis of the scraper ring as the axis.

[0012] As a further description of the above technical solution: the rotating outer tube is provided with a winding groove, and the geotextile layer is wound on the winding groove.

[0013] As a further description of the above technical solution: the limiting assembly includes limiting strips fixedly installed on both sides of the fixed inner tube, and the side walls on both sides of the grouting pipe are provided with limiting grooves, and the two limiting strips are slidably connected to the limiting grooves.

[0014] As a further description of the above technical solution: the top edge of the rotating outer tube is set as a slope.

[0015] As a further description of the above technical solution: the receiving hopper is configured to be a cone shape that is wide at the top and narrow at the bottom.

[0016] As a further description of the above technical solution: a plurality of discharge holes are provided on the side wall of the grouting pipe, and the plurality of discharge holes are arranged below the receiving hopper.

[0017] Beneficial effect: after the limit strip of the fixed inner tube is inserted into the limit groove of the grouting tube, during the downward insertion process, the rotating outer tube is rotated by the external clamping and rotating device. During the rotation process, the scraper assembly can scrape the hole wall of the grouting hole and trim the hole wall. The gravel on the hole wall can enter the bottom of the rotating outer tube through the receiving hopper. During the rotation of the rotating outer tube, the conveying screw blade can transport the gravel inside the receiving hopper upward to the top of the rotating outer tube. The gravel can overflow from the rotating outer tube and fall onto the top of the geotextile layer, thereby sealing the top of the geotextile layer. The filled gravel does not need to be taken from elsewhere. During the insertion process of the hole, the sand and gravel on the side wall of the hole can be scraped off and transported to the top before backfilling into the geotextile layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the three-dimensional structure of a grouting hole stopping and sealing component for a grouting hole proposed by the present invention;

[0019] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0020] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure at point A;

[0021] Figure 4 For the present invention Figure 2 A schematic diagram of the enlarged structure at B;

[0022] Figure 5 This is a schematic diagram of the three-dimensional cross-sectional structure of the present invention after the grouting pipe is removed;

[0023] Figure 6 It is a schematic diagram of the three-dimensional explosion structure of the present invention;

[0024] Figure 7 For the present invention Figure 6 Enlarged structural diagram at C.

[0025] Legend:

[0026] 1. Grouting pipe; 2. Limiting strip; 3. Fixed inner pipe; 4. Rotating outer pipe; 5. Limiting groove; 6. Conveying screw blade; 7. Inclined surface; 8. Rotating ring; 9. Connecting rod; 10. Winding groove; 11. Geotextile layer; 12. Receiving hopper; 13. End face gear ring; 14. Rotating shaft; 15. Gear; 16. Scraper ring; 17. Scraper; 18. Discharge hole. DETAILED DESCRIPTION

[0027] In order to make the technical solution of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Reference Figure 1-7 A grouting hole sealing component for a grouting hole comprises a grouting pipe 1, the outer sleeve of the grouting pipe 1 is provided with a fixed inner pipe 3, a limiting assembly is arranged between the fixed inner pipe 3 and the grouting pipe 1, the outer sleeve of the fixed inner pipe 3 is provided with a conveying screw blade 6, the outer sleeve of the conveying screw blade 6 is provided with a rotating outer pipe 4, the rotating outer pipe 4 is fixedly connected to the conveying screw blade 6, the length of the grouting pipe 1 is longer than the fixed inner pipe 3 and the rotating outer pipe 4, the length of the fixed inner pipe 3 is longer than the rotating outer pipe 4, the outer sleeve of the fixed inner pipe 3 is provided with a receiving hopper 12, the receiving hopper 12 is arranged below the rotating outer pipe 4, the top of the receiving hopper 12 is provided with a scraping assembly, and the side wall of the rotating outer pipe 4 is provided with a geotextile layer 11; the grouting pipe 1 is first inserted into the interior of the grouting hole for grouting, and when the grouting hole needs to be sealed When blocking, after the limiting strip 2 of the fixed inner tube 3 is inserted into the limiting groove 5 of the grouting pipe 1, during the downward insertion process, the rotating outer tube 4 is rotated by the external clamping and rotating device. During the rotation process, the scraper assembly can scrape the hole wall of the grouting hole and trim the hole wall. The gravel on the hole wall can enter the bottom of the rotating outer tube 4 through the receiving hopper 12. During the rotation of the rotating outer tube 4, the conveying screw blade 6 can convey the gravel inside the receiving hopper 12 upward to the top of the rotating outer tube 4. The gravel can overflow from the rotating outer tube 4 and fall onto the top of the geotextile layer 11, thereby sealing the top of the geotextile layer 11. The filled gravel does not need to be taken from elsewhere. During the insertion process of the hole, the sand and gravel on the side wall of the hole can be scraped off and transported to the top and then backfilled into the geotextile layer 11.

[0029] It is worth mentioning that the entire component is directly sealed inside the grouting hole after filling and plugging, and there is no need to take it out.

[0030] As the preferred technical solution of this embodiment, a plurality of connecting rods 9 are fixedly installed on the top of the rotating outer tube 4, and a rotating ring 8 is fixedly installed on the top of the connecting rods 9; by rotating the rotating ring 8, the rotating outer tube 4 and the conveying screw blade 6 can be driven to rotate through the connecting rods 9.

[0031] As the preferred technical solution of this embodiment, the scraper assembly includes multiple rotating shafts 14, and the multiple rotating shafts 14 are rotatably installed on the side wall of the rotating outer tube 4. One end of the multiple rotating shafts 14 is fixedly installed with a scraper ring 16; during the rotation of the rotating outer tube 4, the scraper ring 16 on the surrounding wall can be driven to scrape the side wall of the channel.

[0032] As the preferred technical solution of this embodiment, an end face tooth ring 13 is fixedly installed on the top of the receiving hopper 12, and a gear 15 is fixedly installed on the rotating shaft 14, and the gear 15 is meshed with the end face tooth ring 13; the receiving hopper 12 is fixed on the fixed inner tube 3, and when the rotating outer tube 4 rotates, it can drive multiple rotating shafts 14 to make circular motion around the fixed inner tube 3. During the rotation of the rotating shaft 14, the gear 15 and the end face tooth ring 13 mesh and rotate, thereby realizing the self-rotation of the rotating shaft 14, thereby realizing the rotation of the scraper ring 16, and the rotating scraper ring 16 can increase the scraping ability of the hole wall.

[0033] As a preferred technical solution of this embodiment, a plurality of scrapers 17 are fixedly mounted on the scraper ring 16, and the plurality of scrapers 17 are arranged in a ring array with the axis of the scraper ring 16 as the axis; during the rotation of the scraper ring 16, the scraper 17 can further increase the cleaning ability of the scraper ring 16.

[0034] As a preferred technical solution of this embodiment, the rotating outer tube 4 is provided with a winding groove 10, and the geotextile layer 11 is wound on the winding groove 10; the opening of the winding groove 10 can increase the friction between the geotextile layer 11 and the rotating outer tube 4, thereby preventing the geotextile layer 11 from falling off.

[0035] As a preferred technical solution of this embodiment, the limiting assembly includes limiting strips 2 fixedly installed on both sides of the fixed inner tube 3, and the side walls on both sides of the grouting pipe 1 are provided with limiting grooves 5, and the two limiting strips 2 are slidably connected with the limiting grooves 5; the limiting assembly between the fixed inner tube 3 and the grouting pipe 1 can prevent relative rotation between the fixed inner tube 3 and the grouting pipe 1.

[0036] As a preferred technical solution of this embodiment, the top edge of the rotating outer tube 4 is set as a slope 7; the setting of the slope 7 can prevent the sand and gravel transported from the conveying screw blade 6 from staying on the edge of the rotating outer tube 4, so that the sand and gravel can fall smoothly from the edge of the rotating outer tube 4.

[0037] As a preferred technical solution of this embodiment, the receiving hopper 12 is configured to be a cone shape that is wide at the top and narrow at the bottom; the cone shape can facilitate the collection of crushed stones at the bottom of the receiving hopper 12 after they fall from above, making it convenient for the conveying screw blade 6 to convey the crushed stones.

[0038] As a preferred technical solution of this embodiment, the side wall of the grouting pipe 1 is provided with a plurality of discharge holes 18, and the plurality of discharge holes 18 are arranged below the receiving hopper 12; the arrangement of the discharge holes 18 can increase the speed of slurry filling, so that the slurry can flow out not only from the bottom end of the grouting pipe 1, but also from the edge of the bottom end.

[0039] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A grouting hole sealing assembly for a grouting hole, comprising a grouting pipe (1), characterized in that: The grouting pipe (1) is externally sleeved with a fixed inner pipe (3), a limiting assembly is arranged between the fixed inner pipe (3) and the grouting pipe (1), the fixed inner pipe (3) is externally sleeved with a conveying screw blade (6), the conveying screw blade (6) is externally sleeved with a rotating outer pipe (4), the rotating outer pipe (4) is fixedly connected to the conveying screw blade (6), the length of the grouting pipe (1) is longer than the fixed inner pipe (3) and the rotating outer pipe (4), the length of the fixed inner pipe (3) is longer than the rotating outer pipe (4), the fixed inner pipe (3) is externally sleeved with a material receiving hopper (12), the material receiving hopper (12) is arranged below the rotating outer pipe (4), a scraping assembly is arranged at the top of the material receiving hopper (12), and a geotextile layer (11) is arranged on the side wall of the rotating outer pipe (4).

2. A grouting hole stopping and sealing assembly according to claim 1, characterized in that: A plurality of connecting rods (9) are fixedly mounted on the top end of the rotating outer tube (4), and a rotating ring (8) is fixedly mounted on the top end of the connecting rods (9).

3. A grouting hole sealing assembly for a grouting hole according to claim 1, characterized in that: The scraper assembly comprises a plurality of rotating shafts (14), wherein the plurality of rotating shafts (14) are rotatably mounted on the side wall of the rotating outer tube (4), and a scraper ring (16) is fixedly mounted on one end of the plurality of rotating shafts (14).

4. A grouting hole sealing assembly for a grouting hole according to claim 3, characterized in that: An end face gear ring (13) is fixedly mounted on the top of the receiving hopper (12), a gear (15) is fixedly mounted on the rotating shaft (14), and the gear (15) and the end face gear ring (13) are meshed with each other.

5. A grouting hole sealing assembly for a grouting hole according to claim 3, characterized in that: A plurality of scrapers (17) are fixedly mounted on the scraper ring (16), and the plurality of scrapers (17) are arranged in a ring array with the axis of the scraper ring (16) as the axis.

6. A grouting hole stopping and sealing assembly according to claim 3, characterized in that: The rotating outer tube (4) is provided with a winding groove (10), and the geotextile layer (11) is wound on the winding groove (10).

7. A grouting hole stopping and sealing assembly according to claim 1, characterized in that: The limiting assembly comprises limiting strips (2) fixedly mounted on both sides of a fixed inner tube (3), and limiting grooves (5) are provided on the side walls on both sides of the grouting tube (1), and the two limiting strips (2) are slidably connected to the limiting grooves (5).

8. The grouting hole stopping and sealing assembly of claim 1, characterized in that: The top edge of the rotating outer tube (4) is arranged as a slope (7).

9. A grouting hole sealing assembly for a grouting hole according to claim 1, characterized in that: The receiving hopper (12) is configured to be in a cone shape that is wide at the top and narrow at the bottom.

10. A grouting hole stopping and sealing assembly according to claim 1, characterized in that: The side wall of the grouting pipe (1) is provided with a plurality of discharge holes (18), and the plurality of discharge holes (18) are arranged below the receiving hopper (12).

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