Pressure-maintaining grouting device for anchor rod and anchor cable construction below underground water level line

Abstract

The utility model relates to a pressure maintaining grouting device for anchor rod and anchor cable construction below an underground water level line. Comprising a hollow cavity, a sleeve port arranged at one end of the hollow cavity, a first end plate arranged at the other end of the hollow cavity, a second end plate in bolted connection with the first end plate, and a sealing bin body clamped between the first end plate and the second end plate, the hole diameter of the end opening of the sleeve is matched with the hole diameter of an outer sleeve for anchor rod and anchor cable construction below the underground water level line. The first end plate, the second end plate and the sealing bin body are provided with coaxial through holes; a sealing piece is arranged in the sealing bin body, and the inner diameter of the sealing piece is matched with the outer diameter of an inner drill rod for anchor rod and anchor cable construction below the underground water level line. Before bottom sealing and grouting, the device is connected with an outer sleeve, an inner drill rod penetrates through the device, then the sealing piece and the inner drill rod are tightly sealed, and then grouting is conducted, so that the effects of maintaining pressure in the outer sleeve and preventing grout from flowing back into the outer sleeve are achieved.

Description

Technical Field

[0001] The utility model relates to the field of anchor rod and anchor cable construction, in particular to the field of anchor rod and anchor cable construction below the groundwater level, and more specifically to a pressure-maintaining grouting device for anchor rod and anchor cable construction below the groundwater level. Background Art

[0002] In the existing construction of anchor rods and cables below the groundwater level, when encountering a stratum prone to hole collapse, in order to prevent the hole collapse, a full casing follow-up method is often used for drilling. After the drilling is completed, bottom sealing grouting is required before the anchor rods and cables can be successfully installed.

[0003] However, during the bottom grouting process, due to the gap between the inner drill rod and the outer casing, the slurry can easily flow along the gap to the hole mouth, making the grouting process unable to be completed smoothly. Therefore, how to successfully achieve bottom grouting is the key factor for the successful implementation of anchor rods and anchor cables.

[0004] Therefore, it is an urgent problem to be solved in the industry to provide a pressure-maintaining grouting device for anchor rod and anchor cable construction that can achieve pressure-maintaining grouting during underwater anchor rod and anchor cable bottom grouting construction and prevent the slurry from flowing back to the groundwater level line in the casing. Utility Model Content

[0005] In response to the above problems, one of the purposes of the present invention is to provide a pressure-maintaining grouting device for anchor rod and cable construction below the groundwater level, which can maintain pressure inside the outer casing to prevent the slurry from flowing back into the casing during bottom grouting.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] The utility model provides a pressure-maintaining grouting device for anchor rod and anchor cable construction below the groundwater level, comprising: a hollow cavity, a casing port provided at one end of the hollow cavity, a first end plate provided at the other end of the hollow cavity, a second end plate bolted to the first end plate, and a sealing chamber sandwiched between the first end plate and the second end plate, wherein:

[0008] The aperture of the casing port matches the aperture of the outer casing used for anchor rod and cable construction below the groundwater level;

[0009] The first end plate, the second end plate and the sealing chamber body are provided with coaxial through holes;

[0010] A sealing member is provided in the sealing chamber, and the inner diameter of the sealing member matches the outer diameter of an inner drill rod used for anchor rod and cable construction below the groundwater level.

[0011] In some embodiments, the inner wall of the casing port is provided with an internal thread for threaded connection with the outer casing for anchor rod and cable construction below the groundwater level.

[0012] In some embodiments, the outer diameter of the inner drill rod used for anchor rod and cable construction below the groundwater level is 1 to 2 cm smaller than the diameter of the through hole of the sealing chamber.

[0013] In some embodiments, the diameter of the through hole of the first end plate is 1 to 2 cm larger than the outer diameter of the inner drill rod used for anchor rod and cable construction below the groundwater level.

[0014] In some embodiments, the seal is a V-type composite seal.

[0015] In some embodiments, the hollow cavity is integrally connected to the first end plate.

[0016] Due to the adoption of the above technical solution, the present invention has at least achieved the following technical effects, for example: before the bottom grouting, the pressure-maintaining grouting device for anchor rod and cable construction below the groundwater level of the present invention is connected to the outer casing, the inner drill rod passes through the inside of the device, and then the seal and the inner drill rod are tightly sealed, and then grouting is carried out, thereby achieving the effect of maintaining pressure in the outer casing and preventing the slurry from flowing back into the outer casing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The schematic diagram of the structure of the pressure-maintaining grouting device for anchor rod and anchor cable construction below the groundwater level of the present invention is shown;

[0018] Figure 2 A schematic diagram showing the use state of the pressure-maintaining grouting device for anchor rod and anchor cable construction below the groundwater level of the present invention;

[0019] Description of reference numerals:

[0020] 1-hollow cavity, 2-casing port, 21-internal thread, 3-first end plate, 4-second end plate, 5-sealed chamber, 6-seal, 7-outer casing for anchor rod and cable construction below the groundwater level, 8-inner drill rod for anchor rod and cable construction below the groundwater level, S-bolt. DETAILED DESCRIPTION

[0021] To make the purpose, technical solution, and advantages of the present invention more clearly apparent, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the systems or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the use of terms such as "first" and "second" to define components is solely for the purpose of distinguishing between such components. Unless otherwise stated, these terms have no special meanings 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 expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0024] As a non-limiting embodiment, the utility model provides a pressure-maintaining grouting device for anchor rod and anchor cable construction below the groundwater level, such as Figure 1 As shown, it includes: a hollow cavity 1, a first end plate 3, a second end plate 4 and a sealing chamber body 5. Specifically, one end of the hollow cavity 1 is provided with a sleeve port 2, and the other end of the hollow cavity 1 is provided with an integrally connected first end plate 3, the second end plate 4 is connected to the first end plate 3 by a bolt S, and the sealing chamber body 5 is clamped between the first end plate 3 and the second end plate 4, wherein the first end plate 3, the second end plate 4 and the sealing chamber body 5 are provided with coaxial through holes, and a sealing member 6 is provided in the sealing chamber body 5.

[0025] The aperture of the casing port 2 matches the aperture of the outer sleeve 7 used for anchor rod and cable construction below the groundwater level line. The inner wall of the casing port 2 is provided with an internal thread 21, so that it can be threadedly connected with the outer sleeve 7 used for anchor rod and cable construction below the groundwater level line. The inner diameter of the sealing member 6 matches the outer diameter of the inner drill rod 8 used for anchor rod and cable construction below the groundwater level line. Thus, the inner drill rod 8 used for anchor rod and cable construction below the groundwater level line can achieve a sealing effect using the sealing member 6.

[0026] During use, before grouting the bottom, if Figure 2As shown in the figure, the pressure-holding grouting device for construction of anchor rods and cables below the groundwater level of the present utility model is connected to the outer casing 7 for construction of anchor rods and cables below the groundwater level through the casing port 2. Since the interior of the pressure-holding grouting device for construction of anchor rods and cables below the groundwater level provided by the present utility model is a hollow structure, the inner drill rod 8 for construction of anchor rods and cables below the groundwater level sequentially passes through the second end plate 4, the sealed chamber body 5, and the first end plate 3, and passes through the interior of the hollow cavity 1. A V-shaped combined seal 6 is installed in the sealed chamber body 5. The tightness of the V-shaped combined seal 6 is controlled by the bolts S on the second end plate 4 and the first end plate 3 to tightly seal the inner drill rod 8 for construction of anchor rods and cables below the groundwater level. Then grouting is carried out to achieve the effect of pressure-holding inside the outer casing and prevent the grout from flowing back into the outer casing.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them. Although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. However, such modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A pressure-maintaining grouting device for construction of anchor bolts and anchor cables below the groundwater level line, characterized in that, Comprising: A hollow cavity, a sleeve port provided at one end of the hollow cavity, a first end plate provided at the other end of the hollow cavity, a second end plate bolted to the first end plate, and a sealed chamber body clamped between the first end plate and the second end plate, wherein, The aperture of the sleeve port matches the aperture of the outer sleeve used for the construction of anchor cables below the groundwater level line; The first end plate, the second end plate and the sealed chamber body are provided with through holes that are coaxial; A seal is provided in the sealed chamber body, and the inner diameter of the seal matches the outer diameter of the inner drill pipe used for the construction of anchor cables below the groundwater level line.

2. The pressure-holding grouting device for construction of anchor rods and anchor cables below the groundwater level line according to claim 1, wherein, The inner wall of the sleeve port is provided with internal threads for threaded connection with the outer sleeve used for the construction of anchor cables below the groundwater level line.

3. The pressure-holding grouting device for construction of anchor rods and cables below the groundwater level line according to claim 1, characterized in that, The outer diameter of the inner drill pipe used for the construction of anchor cables below the groundwater level line is 1 - 2 cm smaller than the diameter of the through hole of the sealed chamber body.

4. The pressure-holding grouting device for construction of anchor rods and anchor cables below the groundwater level line according to claim 1, characterized in that, The diameter of the through hole of the first end plate is 1 - 2 cm larger than the outer diameter of the inner drill pipe used for the construction of anchor cables below the groundwater level line.

5. The pressure-holding grouting device for construction of anchor rods and cables below the groundwater level line according to claim 1, characterized in that, The seal is a V-shaped combined seal.

6. The pressure-holding grouting device for construction of anchor rods and anchor cables below the groundwater level line according to claim 1, characterized in that, The hollow cavity and the first end plate are integrally connected.

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