Active net anchoring device for rapid construction

Abstract

An active net anchoring device for rapid construction belongs to the technical field of natural slope support construction and comprises a plurality of anchor rods connected with each other, every two adjacent anchor rods are connected through a sleeve, one end of each anchor rod is located in a slope, the other end of each anchor rod is exposed, the exposed end of each anchor rod is connected with an active net, each anchor rod is sleeved with an anchor backing plate, and the anchor backing plates are connected with the active net. And the anchor backing plate is arranged above the driving net and is fixed through a nut. The rock slope hole-forming device is high in hole-forming speed, high in safety performance and high in quality assurance rate on a rock slope which is severely weathered and strongly unloaded.

Description

Technical Field

[0001] This utility model belongs to the field of natural slope support construction technology, and relates to the construction operation of rock slope support for severely weathered and heavily unloaded rock masses in high and steep slopes of hydropower stations. In particular, it relates to an active net anchoring device for rapid construction. Background Technology

[0002] With the successive development of cascade hydropower stations on major rivers in my country, all hydropower stations with dam structures include slope support construction projects. Active grid construction is one of the support methods. Especially for natural steep slopes in non-excavation areas that are severely weathered and have strong unloading, conventional soft anchor bolts are difficult to drill, have a high risk factor, or fail to meet technical requirements after implementation.

[0003] In view of this situation, in order to ensure high-quality, efficient, rapid and safe construction, it is necessary to study a construction method for rapid active net anchoring to achieve safe and rapid support and closure of natural slopes, and improve the safety environment of engineering construction. This is of great significance to the construction and advancement of hydropower stations. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a fast-construction active net anchoring device to solve the technical problems of difficult operation, high risk factor and inability to meet construction technical requirements in the existing technology for slope support construction.

[0005] To achieve the above and other related objectives, this utility model provides a rapid construction active net anchoring device, comprising a plurality of interconnected anchor rods, with adjacent anchor rods connected by sleeves. One end of each anchor rod is located inside the slope, and the other end is exposed. The exposed end of the anchor rod is connected to the active net. An anchor plate is fitted on the anchor rod and is positioned above the active net. The anchor plate is fixed by nuts.

[0006] Preferably, in any of the above embodiments, the anchor bolt is a self-drilling hollow grouting anchor bolt.

[0007] In any of the above embodiments, it is preferred that the exposed end length of the anchor rod is 0.1 to 0.3 m.

[0008] Preferably, in any of the above embodiments, the exposed end length of the anchor rod is 0.2m.

[0009] In any of the above embodiments, it is preferred that the distance between the upper surface of the anchor plate and the top of the anchor rod is 3 / 5 of the length of the exposed end of the anchor rod.

[0010] In any of the above embodiments, it is preferred that the main rope of the active net is wrapped around the anchor rod once, and the active net wire rope is fixed by rope clamps.

[0011] As described above, the active net anchoring device for rapid construction of this utility model has the following beneficial effects:

[0012] 1. This utility model has a fast drilling speed, high safety performance and high quality assurance rate in rock slopes with severe weathering and strong unloading.

[0013] 2. In situations where drilling in fractured rock masses is difficult, this utility model reduces the need for repeated drilling and grouting processes, saving construction costs and accelerating construction efficiency. It also speeds up the support of natural slopes and provides a safe environment for the rapid and effective construction of surrounding buildings, making it highly applicable. Attached Figure Description

[0014] Figure 1 The diagram shown is a structural schematic of this utility model.

[0015] Figure 2 The image shown is a top view of this utility model.

[0016] Component designation explanation

[0017] 1-Anchor bolt; 2-Anchor plate; 3-Nut; 4-Active wire rope; 5-Rope clamp. Detailed Implementation

[0018] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0019] Please see Figures 1 to 2 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0020] Please see Figure 1-2This utility model provides a rapid construction active net anchoring device, including several interconnected anchor rods 1. Adjacent anchor rods 1 are connected by sleeves. One end of each anchor rod 1 is located inside the slope, and the other end is exposed. The exposed end of the anchor rod 1 is connected to the active net. An anchor plate 2 is sleeved on the anchor rod 1 and is positioned above the active net. The anchor plate 2 is fixed by nuts 3.

[0021] In this embodiment, a self-drilling hollow grouting anchor rod 1 with an anchor plate 2 is quickly drilled into the natural slope to form a fixed anchor pile. The main rope of the active net is wrapped around the anchor rod 1 once, and the extended active net wire rope 4 is fixed with a rope clamp 5. The connected active net wire rope 4 is used to form a complete active anchoring system from the individual anchor bodies.

[0022] Specifically, three self-drilling hollow grouting anchor rods 1, each 1m long and φ25mm in diameter, are used. Adjacent anchor rods 1 are connected by a custom-made sleeve. Under the conditions of a strongly weathered and fractured natural slope, a hand-held pneumatic drill is used to connect the self-drilling hollow grouting anchor rods 1. The anchor rods 1 are drilled into the slope in sections. When a single anchor rod 1 is drilled to 80cm, drilling is stopped, and a sleeve is used to connect it to another anchor rod 1 before drilling continues, ultimately forming a single anchor body with the slope.

[0023] After anchor bolt 1 is drilled, the depth of anchor bolt 1 into the slope is 2.8m, and the length of the exposed end of anchor bolt 1 is 0.2m.

[0024] After all anchor bolts 1 in the active net area to be constructed are completed (and grouting is finished), the active net construction will be carried out. Specifically, the main rope of the active net will be wrapped around the inside of the anchor plate 2 and around the anchor bolt 1 once to quickly form a load-bearing net system, and the active net wire rope 4 will be led out and fixed with a No. 12 rope clamp 5.

[0025] Then, insert the anchor plate 2 into the anchor rod 1 and tighten the nut 3 to achieve a distance of 0.12m between the anchor plate 2 and the top of the anchor rod 1, thus forming a complete set of active net anchoring components.

[0026] In this embodiment, the use of a sleeve to connect two adjacent anchor rods 1 can prevent a single anchor rod 1 from being too long and having too large a torque, which could lead to the anchor rod 1 breaking and failing during drilling, thus improving the safety and stability of the device during use.

[0027] In this embodiment, the anchor plate 2 is made of 5mm galvanized steel plate, and the size of the anchor plate 2 is 15cm*15cm.

[0028] In summary, this invention offers advantages such as rapid hole drilling speed, high safety performance, and high quality assurance rate on severely weathered and heavily unloaded rock slopes. Therefore, this invention effectively overcomes the various shortcomings of existing technologies and possesses significant industrial application value.

[0029] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A rapid-construction active net anchoring device, characterized in that: It includes several interconnected anchor rods (1), with adjacent anchor rods (1) connected by sleeves. One end of the anchor rod (1) is located inside the slope, and the other end is exposed. The exposed end of the anchor rod (1) is connected to the active net. An anchor plate (2) is fitted on the anchor rod (1) and is located above the active net. The anchor plate (2) is fixed by nuts (3).

2. The rapid construction active net anchoring device according to claim 1, characterized in that: The anchor bolt (1) is a self-propelled hollow grouting anchor bolt (1).

3. The rapid construction active net anchoring device according to claim 1, characterized in that: The exposed end length of the anchor rod (1) is 0.1 to 0.3 m.

4. The rapid construction active net anchoring device according to claim 3, characterized in that: The exposed end of the anchor rod (1) has a length of 0.2m.

5. The rapid construction active net anchoring device according to claim 1, characterized in that: The distance between the upper surface of the anchor plate (2) and the top of the anchor rod (1) is 3 / 5 of the length of the exposed end of the anchor rod (1).

6. The rapid construction active net anchoring device according to claim 1, characterized in that: The main rope of the active net is wrapped around the anchor rod (1) once, and the active net wire rope (4) is fixed by rope clamp (5).

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