A double-effect grouting method for reinforcing the joint surface of new and old dam bodies of a masonry dam

Abstract

The application discloses a double-effect grouting method for reinforcing the joint surface of new and old dam bodies of a masonry dam, and comprises the following steps: a preparation step, grouting tool preparation, and preparation for grouting the joint surface of new and old dam bodies; a cleaning step, impurity removal on the original dam surface, and then cleaning of the original dam surface; a layout preparation step, grouting sheet arrangement around each region, and grouting pipe and grouting box arrangement in combination with the chiseled masonry joints; a construction implementation step, grouting by means of the grouting pipe, grouting box and exhaust pipe, and completion of the double-effect grouting; and a site clearing step, collection of excess materials after grouting, and equipment withdrawal. Common treatment methods for the joint surface of new and old dam bodies in the application include interface anchor rod and contact grouting measures. The application is based on the common measures, aims at the reinforcement measures for the joint surface of new and old dam bodies of a masonry dam, and realizes the double purposes of contact grouting of the joint surface and new and old dam body reinforcement grouting by means of the proposed grouting method and implementation steps.

Description

Technical Field

[0001] This invention relates to the field of reservoir dam reinforcement in water conservancy projects, specifically a dual-effect grouting method for thickening and reinforcing the interface between the old and new dam bodies in a masonry dam. Background Technology

[0002] In the reinforcement of reservoir dams in water conservancy projects, when general reinforcement measures cannot effectively solve the problem, it is often necessary to thicken and reinforce the dam. In the thickening and reinforcement of masonry dams, the treatment measures of the interface between the new and old dam bodies play a crucial role in the integration of the new and old dam bodies and the purpose of seepage prevention and reinforcement. Summary of the Invention

[0003] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description and other accompanying drawings.

[0004] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a dual-effect grouting method for thickening and reinforcing the interface between the old and new dam bodies in masonry dams. This grouting method is simple and effective to construct and can achieve the dual purpose of contact grouting at the interface of the masonry dam and reinforcement grouting between the old and new dam bodies.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: a dual-effect grouting method for thickening and reinforcing the interface between the old and new dam bodies in a masonry dam, wherein S1 is the preparation step, including reviewing, exploring and confirming the scope of the arch dam data, preparing grouting tools, purchasing grout stoppers, grouting pipes, exhaust pipes, several grout outlet boxes and excavation machinery required for grouting, and preparing for grouting at the interface between the old and new dam bodies.

[0006] The S2 cleaning step involves removing impurities from the original dam surface, chiseling out the masonry joints on the original dam surface to form a joint removal groove, and chiseling out some masonry at the location where the grout outlet box is to be installed later. Then the original dam surface is cleaned.

[0007] S3 layout preparation involves dividing the original dam face into zones, arranging grout-stopping plates around each zone, and installing vent pipes below the top grout-stopping plates. At the same time, grouting pipes and grout outlet boxes are installed in conjunction with the excavated grooves of the masonry joints.

[0008] S4 construction involves grouting after the thickened dam body is constructed, using grouting pipes, grout outlet boxes, and exhaust pipes to perform grouting, thus completing dual-effect grouting.

[0009] The S5 site clearing procedure involves collecting excess materials after grouting is completed, then cleaning the site and removing the materials and equipment.

[0010] A further improvement to the present invention is that the pulp outlet box can be made of metal sheet. The size of the pulp outlet box can be selected according to different projects, and the general size is length × width × height: 0.16m × 0.16m × 0.06m, but it is not limited to 0.16m × 0.16m × 0.06m.

[0011] A further improvement to the present invention is that several of the grout outlet boxes are arranged in an orderly manner on the grouting pipe. The distribution of the grout outlet boxes facilitates the coordination of the grouting pipe, so that the grout can also flow into each grout outlet box.

[0012] A further improvement to the invention is that the exhaust pipe extends through the grout stopper. The grout stopper can be made of plastic. The exhaust pipe can be made of PVC or PE pipe, with a diameter generally between φ20 and φ32. Holes need to be drilled every 0.1m in the exhaust pipe to allow for air release.

[0013] A further improvement to the invention is that the joint removal groove is located at the top of the masonry joint. The depth of the joint removal groove is generally 40mm, but can be adjusted according to different projects.

[0014] In a further improvement to the present invention, the grouting pipe can be made of PVC or PE pipe, and the pipe diameter is generally φ20~φ32. Beneficial effects

[0015] Compared with the prior art, the present invention has the following beneficial effects;

[0016] Common treatment methods for the interface between new and old dam bodies in this invention include interface anchor bolts and contact grouting. This invention is based on the above common measures and focuses on reinforcement measures for the interface between new and old masonry dam bodies. At the same time, through the proposed grouting method and implementation steps, it achieves the dual purpose of contact grouting of the interface and reinforcement grouting of the new and old dam bodies. Attached Figure Description

[0017] Figure 1 This is a schematic diagram showing the layout of the grouting zoning pipeline for a masonry dam, which is a dual-effect grouting method for thickening and reinforcing the interface between the old and new dam bodies according to the present invention.

[0018] Figure 2 This is a vertical schematic diagram of the grout outlet box arrangement in a dual-effect grouting method for thickening and reinforcing the interface between new and old dam bodies in a masonry dam according to the present invention.

[0019] Figure 3 This is a side view schematic diagram of the grout outlet box arrangement in the dual-effect grouting method for thickening and reinforcing the interface between the old and new dam bodies of a masonry dam according to the present invention.

[0020] In the diagram: 1. Grout stop plate, 2. Grouting pipe, 3. Grout outlet box, 4. Vent pipe, 5. Dam body masonry, 6. Masonry joint, 7. Original dam surface, 8. Thickened dam body, 9. Masonry joint removal groove. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0022] Furthermore, in the description of this invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0023] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two main bodies are not connected through a transitional structure, but rather formed as a whole through a connecting structure. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] The present invention will be further described below with reference to the accompanying drawings: Example 1

[0026] As attached Figure 1 To be continued Figure 3 As shown: Figure 1This is a schematic diagram showing the layout of the grouting zoning pipeline for a masonry dam, which is a dual-effect grouting method for thickening and reinforcing the interface between the old and new dam bodies according to the present invention. Figure 2 This is a vertical schematic diagram of the grout outlet box arrangement in a dual-effect grouting method for thickening and reinforcing the interface between new and old dam bodies in a masonry dam according to the present invention. Figure 3 This is a side view schematic diagram of the grout outlet box arrangement in the dual-effect grouting method for thickening and reinforcing the interface between the old and new dam bodies of a masonry dam according to the present invention.

[0027] This embodiment provides a dual-effect grouting method for thickening and reinforcing the interface between the old and new dam bodies in a masonry dam, including the following steps: S1 Preparation step: reviewing arch dam data, conducting exploration and confirming the scope, preparing grouting tools, purchasing grout stop plate 1, grouting pipe 2, exhaust pipe 4, several grout outlet boxes 3 and excavation machinery required for grouting, and preparing to grout the interface between the old and new dam bodies.

[0028] S2 cleaning step: remove impurities from the original dam surface 7, chisel out the masonry joints 6 on the original dam surface 7 to form a joint chisel groove 9, and chisel out some masonry at the location of the grout box 3 to be installed later, and then clean the original dam surface 7.

[0029] S3 layout preparation: the original dam face 7 is divided into zones, grout stop plates 1 are arranged around each zone, and vent pipes 4 are arranged below the top grout stop plates 1. At the same time, grouting pipes 2 and grout outlet boxes 3 are set in conjunction with the chiseled masonry joint chisel grooves 9.

[0030] S4 construction implementation: After the thickening of the dam body 8 is completed, grouting is carried out using grouting pipe 2, grout outlet box 3 and exhaust pipe 4 to complete the dual-effect grouting;

[0031] The S5 site clearing procedure involves collecting excess materials after grouting is completed, then cleaning the site and removing the materials and equipment.

[0032] The grout outlet box 3 can be made of metal sheet, and the box size can be selected according to different projects. Several grout outlet boxes 3 are arranged in an orderly manner on the grouting pipe 2. The vent pipe 4 passes through the grout stop plate 1. The joint removal groove 9 is set at the top of the masonry joint 6.

[0033] The specific working principle is as follows:

[0034] This invention involves reviewing, exploring, and confirming the scope of the arch dam data, preparing grouting tools, purchasing grout-stopping plates 1, grouting pipes 2, vent pipes 4, several grout outlet boxes 3, and the necessary excavation machinery for grouting, and simultaneously dispatching personnel to remove impurities from the original dam surface 7, chiseling away all the masonry joints 6 on the original dam surface 7 to form a joint removal groove 9, and chiseling away some masonry at the locations where the grout outlet boxes 3 will be placed later to provide space for the grout outlet boxes 3, and finally cleaning the original dam surface 7, then dividing the original dam surface into sections, arranging grout-stopping plates 1 around the perimeter of each section, and placing vent pipes 4 below the top grout-stopping plates 1, while simultaneously placing the grouting pipes 2 and grout outlet boxes in conjunction with the chiseled masonry joints 6. After completion, the dam body 8 to be thickened is then grouted using grouting pipes 2, grout outlet boxes 3, and vent pipes 4, achieving dual-effect grouting, which provides dual-effect grouting for the interface between the old and new dam bodies. After grouting is completed, excess materials are collected, and the site is subsequently cleaned up before the materials and equipment are removed from the site.

[0035] It should be understood that the embodiments disclosed herein are not limited to the specific processing steps or materials disclosed herein, but should be extended to equivalent substitutions of such features as understood by those skilled in the art. It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting.

[0036] The term "embodiment" in this specification means that a specific feature or characteristic described in connection with an embodiment is included in at least one embodiment of the invention. Therefore, phrases or "embodiments" appearing in various places throughout the specification do not necessarily refer to the same embodiment.

[0037] Furthermore, the described features or characteristics can be incorporated into one or more embodiments in any other suitable manner. In the above description, specific details, such as thickness, quantity, etc., are provided to provide a comprehensive understanding of embodiments of the invention. However, those skilled in the art will understand that the invention can be implemented without the aforementioned specific details or may be implemented using other methods, components, materials, etc.

Claims

1. A dual-effect grouting method for thickening and reinforcing the interface between new and old dam bodies in a masonry dam, characterized in that, Includes the following steps; S1 Preparation steps: review arch dam data, conduct exploration and scope confirmation, prepare grouting tools, purchase grout stop plate (1), grouting pipe (2), exhaust pipe (4), several grout outlet boxes (3) and excavation machinery required for grouting, and prepare for grouting of the new and old dam bodies. S2 cleaning steps: remove impurities from the original dam surface (7), chisel out the masonry joints (6) on the original dam surface (7) to form a masonry joint chisel groove (9), and chisel out part of the masonry at the location of the grout box (3) to be installed later, and then clean the original dam surface (7). S3 layout preparation, the original dam surface (7) is divided into zones, grout stop plates (1) are arranged around each zone, and exhaust pipes (4) are arranged below the top grout stop plates (1). At the same time, grouting pipes (2) and grout outlet boxes (3) are set in conjunction with the chiseled masonry joint chisel grooves (9). S4 construction implementation: After the thickening of the dam body (8) is carried out, grouting is carried out using grouting pipe (2), grout outlet box (3) and exhaust pipe (4) to complete the double-effect grouting; The S5 site clearing procedure involves collecting excess materials after grouting is completed, then cleaning the site and removing the materials and equipment.

2. The method for dual-effect grouting at the interface between new and old dam bodies in a masonry dam, as described in claim 1, is characterized in that: The discharge box (3) can be made of metal sheet, and the size of the box can be selected according to different projects.

3. The method for dual-effect grouting at the interface between new and old dam bodies in a masonry dam, as described in claim 1, is characterized in that: Several of the grout outlet boxes (3) are arranged in an orderly manner on the grouting pipe (2).

4. The method for dual-effect grouting at the interface between new and old dam bodies in a masonry dam, as described in claim 1, is characterized in that: The exhaust pipe (4) passes through the slurry stop plate (1).

5. The method for dual-effect grouting at the interface between new and old dam bodies in a masonry dam, as described in claim 1, is characterized in that: The joint removal groove (9) is located at the top of the stone joint (6).

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