An underground cavern anchor rod test support system

Abstract

This utility model discloses a test support system for anchor bolt technology in underground caverns. The system uses a disc-lock scaffold or steel pipe frame, combined with PVC pipes and rigid steel pipes, to simulate the cavern construction environment. The support consists of a three-dimensional grid frame composed of vertical, horizontal, and diagonal bars, which can be adjusted according to the cavern size. The top is arched to simulate the cavern outline. Horizontal bars support step plates and guardrails, forming a working platform. PVC pipes are fixed to the support to simulate anchor bolt drilling, with rigid steel pipes placed underneath to prevent deformation. The system is built outside the cavern, facilitating the replacement of PVC pipes for multi-parameter testing and avoiding the problem of difficult removal of substandard anchor bolts inside the cavern. This system has a simple structure, is flexible in setup, can realistically simulate construction conditions, improves testing safety and efficiency, and optimizes anchor bolt technology.

Description

Technical Field

[0001] This utility model belongs to the field of water conservancy engineering construction technology, specifically relating to an underground cavern anchor bolt test support system. Background Technology

[0002] In the construction of underground caverns in hydraulic engineering projects, support engineering is a crucial component. Anchor bolt process testing, as an important step before formal construction, verifies whether the construction process meets the various performance and performance indicators required by the design. Conventional process tests are usually conducted inside the cavern. To obtain optimal process parameters, various combinations of process parameters are used during the test, inevitably resulting in defective bolts that need to be removed. This utility model aims to provide an anchor bolt testing support system that allows testing to be conducted outside the cavern, avoiding the problem of defective bolts easily obtained from direct in-situ testing. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an underground cavern anchor bolt test support system that is simple in structure, flexible in erection, can realistically simulate construction conditions, improve test safety and efficiency, and optimize anchor bolt technology.

[0004] The technical solution of this utility model is as follows: an underground cavern anchor bolt test support system, comprising: PVC pipe A, support vertical rod, support horizontal rod A, rigid steel pipe, PVC pipe B, step plate, support horizontal rod B and support horizontal rod C. PVC pipe A is fixedly connected to the support vertical rod and support horizontal rod A respectively. PVC pipe A is parallel to the ground, and the support vertical rod is fixedly connected perpendicularly to the ground. Support horizontal rods A, B, and C are all fixedly connected perpendicularly and intersectingly to the support vertical rod. Support horizontal rods A, B, and C are arranged at different heights of the support vertical rod, forming a multi-layer platform. The rigid steel pipe is close to the lower part of PVC pipe B and is obliquely fixedly connected to the support vertical rod. PVC pipe B is obliquely fixedly connected to the support horizontal rod C. The step plate is placed above support horizontal rods B and C. Several support vertical rods, support horizontal rods A, B, and C are connected to form a lifting scaffolding platform.

[0005] Furthermore, a diagonal brace is laterally connected between the vertical support rod and the horizontal support rod A, a diagonal brace is laterally connected between the vertical support rod and the horizontal support rod B, and a diagonal brace is laterally connected between the vertical support rod and the horizontal support rod C.

[0006] Furthermore, protective railings are provided around the perimeter of the step plate.

[0007] The beneficial effects of this utility model are: This utility model discloses an underground cavern anchor bolt testing support system. By constructing a support structure outside the cavern, using common materials such as disc-lock scaffolds, steel pipe frames, PVC pipes, and rigid steel pipes, the system features a simple structure and flexible erection. It can accurately simulate the construction environment based on the cavern size and the layout of the drilling and blasting rig, avoiding the problem of difficult removal of anchor bolts that fail tests inside the cavern, thus improving safety and operability. The system supports PVC pipe replacement for multi-parameter testing, optimizing the anchor bolt process and improving construction efficiency and quality control. The rigid steel pipes prevent PVC pipe deformation, ensuring accurate test results. Overall, the system enhances the reliability and practicality of underground cavern support technology in hydraulic engineering. Attached Figure Description

[0008] Figure 1 This is a structural schematic diagram of an underground cavern anchor bolt test support system according to this utility model.

[0009] Figure 2 This is a schematic diagram of the structure of the inclined support rod of an underground cavern anchor bolt test support system according to this utility model.

[0010] Figure 3 This is a schematic diagram of the structure of the step plate of an underground cavern anchor bolt test support system according to this utility model. In the diagram: 1-Simulated drilling and blasting trolley structure, 2-Outline of underground cavern, 3-PVC pipe A, 4-Vertical support rod, 5-Horizontal support rod A, 6-Rigid steel pipe, 7-PVC pipe B, 8-Diagonal support rod, 11-Guardrail, 12-Step plate, 13-Horizontal support rod B, 14-Horizontal support rod C. Detailed Implementation

[0011] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0012] like Figure 1-3As shown, an underground cavern anchor bolt test support system includes: a PVC pipe A3, a support vertical rod 4, a support horizontal rod A5, a rigid steel pipe 6, a PVC pipe B7, a step plate 12, a support horizontal rod B13, and a support horizontal rod C14. The PVC pipe A3 is fixedly connected to the support vertical rod 4 and the support horizontal rod A5 respectively by clamps or fasteners. The PVC pipe A3 is parallel to the ground, and the support vertical rod 4 is fixedly connected to the ground perpendicularly, serving as the main support frame. The support horizontal rods A5, B13, and C14 are all fixedly connected to the support vertical rod 4 perpendicularly and intersectingly. The support horizontal rods A5, B13, and C14 are arranged on the support vertical rod 4. The different height layers form a multi-layer platform; specifically, the support crossbar A (5) is located on the upper layer and is used to support the top arch simulation; the support crossbar B (13) and support crossbar C (14) are located on the middle and lower layers and support the working platform; the rigid steel pipe 6 is close to the bottom of the PVC pipe B7, the rigid steel pipe 6 is obliquely fixed to the support vertical bar 4, the PVC pipe B7 is obliquely fixed to the support crossbar C14, the step plate 12 is placed above the support crossbar B13 and support crossbar C14 and fixed by bolts; several of the support vertical bars 4, support crossbar A5, support crossbar B13 and support crossbar C14 are connected to form a lifting scaffolding platform, which is convenient for height adjustment.

[0013] Preferably, a diagonal brace 8 is laterally connected between the vertical support rod 4 and the horizontal support rod A5, a diagonal brace 8 is laterally connected between the vertical support rod 4 and the horizontal support rod B13, and a diagonal brace 8 is laterally connected between the vertical support rod 4 and the horizontal support rod C14.

[0014] Preferably, the steps 12 are provided with guardrails 11 (approximately 1.1 meters high) around their perimeter.

[0015] In use, the system is placed outside the cavern to simulate the environment of a drilling and blasting rig. PVC pipes are arranged according to the anchor bolt design drawings, and bolt insertion and grouting tests are conducted. Different process parameters, such as grouting pressure and material ratio, can be tested by replacing the PVC pipes to ensure test accuracy. If adjustments are needed, the fasteners are loosened and the spacing is reconfigured. This system is suitable for verifying the support process of underground caverns in hydraulic engineering projects, and can improve testing efficiency and reliability.

[0016] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A test support system for anchor bolts in underground caverns, characterized in that, include: PVC pipe A (3), support vertical rod (4), support horizontal rod A (5), rigid steel pipe (6), PVC pipe B (7), step plate (12), support horizontal rod B (13) and support horizontal rod C (14), the PVC pipe A (3) is fixedly connected to the support vertical rod (4) and support horizontal rod A (5) respectively, the PVC pipe A (3) is parallel to the ground, the support vertical rod (4) is fixedly connected to the ground perpendicularly, the support horizontal rod A (5), support horizontal rod B (13) and support horizontal rod C (14) are all fixedly connected to the support vertical rod (4) perpendicularly and crosswise, the support horizontal rod A (5), support The horizontal bar B (13) and the support horizontal bar C (14) are arranged at different heights of the support vertical bar (4) to form a multi-layer platform; the rigid steel pipe (6) is close to the bottom of the PVC pipe B (7), the rigid steel pipe (6) is obliquely fixed to the support vertical bar (4), the PVC pipe B (7) is obliquely fixed to the support horizontal bar C (14), the step plate (12) is placed above the support horizontal bar B (13) and the support horizontal bar C (14), and several of the support vertical bars (4), support horizontal bars A (5), support horizontal bars B (13) and support horizontal bars C (14) are connected to form a lifting scaffolding platform.

2. The underground cavern anchor bolt test support system according to claim 1, characterized in that, A diagonal brace (8) is laterally connected between the vertical support rod (4) and the horizontal support rod A (5), a diagonal brace (8) is laterally connected between the vertical support rod (4) and the horizontal support rod B (13), and a diagonal brace (8) is laterally connected between the vertical support rod (4) and the horizontal support rod C (14).

3. The underground cavern anchor bolt test support system according to claim 1, characterized in that, The steps (12) are provided with guardrails (11) around their edges.

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