Orienting device for construction of driving guide pipe in tunnel

Abstract

The utility model discloses an orienting device for construction of driving a conduit in a tunnel, which comprises a tripod, an upper inclined rod and a lower inclined rod, the tripod is of an inverted triangle structure formed by welding two inclined edge rods and a top rod, the rear end of the upper inclined rod is welded with the middle part of the top rod, the rear end of the lower inclined rod is welded with the bottom end of the inverted triangle structure, and the inclined edge rods are welded with the bottom end of the inverted triangle structure. The front end of the upper inclined rod and the front end of the lower inclined rod are fixedly welded, a triangular structure formed by connecting the triangular frame, the upper inclined rod and the lower inclined rod provides a fixed angle for guide pipe arrangement, and guide semicircular pipes with downward openings are welded to the bottoms of the front end and the rear end of the lower inclined rod respectively. According to the orienting device for construction of driving the guide pipe in the tunnel, the drilling angle of a drill jumbo drill rod can be orientated, the guide pipe driving angle can be fixed, it is ensured that the guide pipe driving angle is consistent with the drilling angle of the drill rod, and therefore it is ensured that the guide pipe is smoothly driven into a rock stratum to reach the expected position.

Description

Technical Field

[0001] This utility model relates to the technical field of tunnel construction, specifically to a directional device for drilling guide pipes in tunnels. Background Technology

[0002] Tunnels are an indispensable part of highway construction. Installing guide pipes inside tunnels is a technique used in tunnel excavation, primarily for pre-support in areas with short self-stabilization times, such as weak and fractured zones, shallow buried sections, tunnel entrance biased sections, sand layers, gravel layers, and fault fracture zones. When reinforcing a tunnel, small guide pipes with grouting holes are inserted into pre-drilled holes, and grout is injected into the tunnel's soil through these pipes to increase the tunnel's structural support.

[0003] During the installation of tunnel guide pipes, controlling the installation angle can be challenging. If the guide pipe angle doesn't match the drilling angle of the drilling rig, the grouting material may not distribute evenly or adequately fill rock fissures, affecting the grouting effect. Excessive deviation in the guide pipe angle can also impact the tunnel's stability and durability, posing a potential threat to its long-term operational safety. This not only affects construction quality but also increases safety risks. Therefore, a directional device for installing guide pipes within tunnels needs to be designed. Summary of the Invention

[0004] The purpose of this invention is to provide an orientation device for drilling guide pipes in tunnels. This orientation device can orient the drilling angle of the drill rod of the rock drilling rig and also provide a fixed angle for the drilling of the guide pipe, ensuring that the guide pipe is successfully driven into the rock strata to reach the expected position.

[0005] This utility model is achieved using the following technical solution:

[0006] An directional device for tunnel guide pipe installation includes a tripod, an upper inclined rod, and a lower inclined rod. The tripod is an inverted triangular structure formed by welding two inclined rods and a top rod. The rear end of the upper inclined rod is welded to the middle of the top rod, and the rear end of the lower inclined rod is welded to the bottom of the inverted triangular structure. The front ends of the upper and lower inclined rods are fixedly welded together. The triangular structure formed by the tripod, upper and lower inclined rods provides a fixed angle for guide pipe installation. A guide semicircular tube with an opening facing downwards is welded to the bottom of the front and rear ends of the lower inclined rod. The guide semicircular tube is used to align the drill rod of the drilling rig and the guide pipe with the lower inclined rod at a fixed angle during construction, thus providing angular orientation.

[0007] A further preferred embodiment includes a handheld rod welded inside the tripod. The handheld rod is used for handheld positioning when determining the angle.

[0008] A further preferred embodiment: the handheld rod is vertically welded within the tripod. Vertical welding of the handheld rod facilitates handholding and securing it for the operator.

[0009] A further preferred embodiment is that the top rod is an arc-shaped rod that can fit tightly against the arc surface of the secondary lining.

[0010] The directional device used for drilling the guide pipe in this tunnel is simple in structure and easy to operate. The structural materials are all leftover materials from the construction site. The triangular structure formed by the tripod, upper and lower inclined rods provides a fixed angle for the drilling rig's drill rod to orient the hole and for the guide pipe to be driven. This ensures successful drilling into the rock strata to the desired location and allows for the even distribution and full filling of rock fissures by subsequent grouting material. It also reduces the risk of rock collapse due to the guide pipe failing to effectively support the upper rock strata, ensuring the safety of construction personnel. Ensuring the guide pipe driving angle matches the drill rod drilling angle improves the accuracy and efficiency of guide pipe driving, enhances construction quality, shortens construction time, and yields significant economic benefits. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the directional device used for laying guide pipes inside the tunnel.

[0012] Figure 2 This is a schematic diagram of the orienting device used for orienting the guide pipe during the installation of the guide pipe in this tunnel.

[0013] Figure 3 This is a schematic diagram of the directional device used for drilling the guide pipe in the tunnel, which orients the drill rod of the rock drilling rig.

[0014] The names corresponding to the serial numbers in the figure are:

[0015] 1. Inclined rod; 2. Hand rod; 3. Top rod; 4. Upper inclined rod; 5. Lower inclined rod; 6. Guide semicircular tube; 7. Guide tube; 8. Drill rod of rock drilling rig. Detailed Implementation

[0016] The technical solutions of the invention will be clearly and completely described below with reference to the embodiments. The described embodiments are only a part of the present utility model, and not all of the embodiments. Example

[0017] An directional device for tunnel guide pipe installation includes a tripod, an upper inclined rod 4, and a lower inclined rod 5. The tripod is an inverted triangular structure formed by welding two inclined rods 1 and a top rod 3. The top rod 3 is an arc-shaped rod that can fit tightly against the secondary lining surface. The rear end of the upper inclined rod 4 is welded to the middle of the top rod 3, and the rear end of the lower inclined rod 5 is welded to the bottom of the inverted triangular structure. The front ends of the upper inclined rod 4 and the lower inclined rod 5 are fixedly welded together. The triangular structure formed by the tripod, upper inclined rod 4, and lower inclined rod 5 provides a fixed angle for the installation of the guide pipe 7. A downward-facing guide semicircular tube 6 is welded to the bottom of the front and rear ends of the lower inclined rod 5. The guide semicircular tube 6 is used to fit the drill rod of the drilling rig and the guide pipe 7 against the lower inclined rod 5 at a fixed angle during construction, thus providing angular orientation.

[0018] A handheld rod 2 is welded inside the tripod. The handheld rod 2 is used for hand positioning when setting the angle. The handheld rod 2 is vertically welded inside the tripod.

[0019] The directional device used for drilling the guide pipe in this tunnel has a relatively simple construction procedure and is suitable for use on the construction site. When drilling the hole with the drill rod of the rock drilling rig, the hand holds the hand lever to fix the directional device. The drill rod is placed against the guide semicircular tube 6 to orient the drill rod at an angle. When drilling the guide pipe 7, the guide pipe 7 is placed against the guide semicircular tube 6 to ensure that the drilling angle of the guide pipe 7 is consistent with the drilling angle of the drill rod. This ensures that the guide pipe 7 is successfully driven into the rock stratum to reach the expected position, and that the subsequent grouting material can be evenly distributed and fully fill the rock stratum fissures. This reduces the risk of rock stratum collapse due to the guide pipe not being able to effectively support the rock stratum above, ensuring the personal safety of construction personnel and the quality of the project. The structural materials are all leftover materials from the construction site. The triangular structure formed by the tripod, upper and lower inclined rods provides a fixed angle for the drilling of the guide pipe, reduces the intensity of manual labor, improves the quality of construction technology, shortens the construction time, and has significant economic benefits.

[0020] The above description is not intended to limit the present utility model, nor is the present utility model limited to the above examples. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should be protected by the present utility model.

Claims

1. A directional device for laying guide pipes in tunnels, characterized in that: It includes a tripod, an upper diagonal rod (4) and a lower diagonal rod (5). The tripod is an inverted triangular structure formed by welding two diagonal rods (1) and a top rod (3). The rear end of the upper diagonal rod (4) is welded to the middle of the top rod (3), and the rear end of the lower diagonal rod (5) is welded to the bottom of the inverted triangular structure. The front end of the upper diagonal rod (4) and the front end of the lower diagonal rod (5) are fixedly welded. The front end and the bottom of the rear end of the lower diagonal rod (5) are respectively welded with a guide semicircular tube (6) with the opening facing downward.

2. The directional device for tunnel conduit installation according to claim 1, characterized in that: The tripod is welded with a hand-held rod (2).

3. The directional device for tunnel conduit installation according to claim 2, characterized in that: The handheld rod (2) is vertically welded inside the tripod.

4. The directional device for tunnel conduit installation according to claim 1, characterized in that: The top rod (3) is an arc-shaped rod that can fit tightly against the arc surface of the secondary lining.

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