Temporary support structure for construction of steel lining of water conservancy dam tunnel

Abstract

The utility model discloses a water conservancy dam tunnel steel lining construction temporary support structure, including riser and steel member, the installation adjusting mechanism includes the lifting plate, the both sides of lifting plate are with the inside slide connection of riser, the top fixed connection of lifting plate has a plurality of positioning frame, the inside of positioning frame is inserted with channel steel, the top fixed connection of channel steel has the mounting plate, the inside of mounting plate is fixedly installed with steel member, the outside of steel member and riser is laid with the seepage control cloth. The utility model discloses a setting installation adjusting mechanism, utilizes positioning frame and mounting plate to be convenient for the positioning installation of channel steel and steel member, simultaneously, the seepage control cloth is laid in the outside of steel member and riser after the descending of lifting plate is convenient for user, after waiting for laying, again moving lifting plate makes steel member and tunnel top abutment to be positioned to the seepage control cloth, and the protective effect can be played to channel steel and steel member with the seepage control cloth, and the foreign matter such as soil residue, gravel is avoided to drop.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, specifically a temporary support structure for the steel lining construction of a water utilization dam tunnel. Background Technology

[0002] Dams and tunnels in water conservancy projects serve as key water conveyance channels, undertaking multiple functions such as inter-basin water transfer, power generation, flood discharge, and sediment removal. Their design typically penetrates through mountain rock strata, characterized by deep burial, complex cross-sections, and variable geological conditions. These underground structures face challenges during construction, including poor surrounding rock stability, high seepage pressure, and concentrated ground stress. In particular, when crossing fault fracture zones or weak rock strata, they are highly susceptible to collapse risks. To ensure the safety of excavation operations and maintain the accuracy of tunnel morphology, it is necessary to adopt a temporary support structure with steel lining. This device forms an initial support frame through prefabricated steel arch frames and anchor bolt systems, which, together with shotcrete, forms a closed protective layer. This not only disperses the deformation stress of the rock mass in real time but also provides a reliable support for subsequent permanent reinforced concrete lining.

[0003] However, when concrete is sprayed into the narrow gap between the steel arch and the tunnel wall, the inherent viscosity and surface tension of the concrete can easily cause a severe adhesion effect, making the steel arch and the concrete layer tightly interlocked. This makes subsequent dismantling and recycling work extremely difficult. At the same time, if the spraying thickness is uneven or there are missed areas during the concrete spraying process, it will be difficult to form an effective protective barrier in the weak areas. Soil, gravel and other foreign objects will still fall from the gaps, posing certain safety hazards. Utility Model Content

[0004] To address the problems mentioned in the background art, the purpose of this utility model is to provide a temporary support structure for the steel lining construction of a water utilization dam tunnel. This structure offers the advantage of easy protection and solves the problem that when concrete is sprayed into the narrow gap between the steel arch and the tunnel wall, the inherent viscosity and surface tension of the concrete easily lead to severe adhesion, causing the steel arch and concrete layer to become tightly interlocked, greatly hindering subsequent dismantling and recycling. Furthermore, if uneven spraying thickness or missed areas occur during concrete spraying, an effective protective barrier cannot be formed in the weakest areas, allowing debris such as soil and gravel to fall through the gaps, posing a safety hazard.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a temporary support structure for the construction of steel lining in a water utilization dam tunnel, comprising a vertical plate and steel components, wherein the steel components are located on the inner side of the vertical plate, and an installation and adjustment mechanism is provided on the inner side of the vertical plate;

[0006] The installation and adjustment mechanism includes a lifting plate, the two sides of which are slidably connected to the inner side of the upright plate. Several positioning frames are fixedly connected to the top of the lifting plate. Channel steel is inserted into the inside of the positioning frames. An installation plate is fixedly connected to the top of the channel steel. The steel components are fixedly installed on the inner side of the installation plate. A waterproof cloth is laid on the outer side of the steel components and the upright plate.

[0007] As a preferred embodiment of this utility model, the inner side of the upright plate is provided with a movable groove, and the inner wall of the movable groove is rotatably connected to a reinforcing plate by a shaft pin. The top of the reinforcing plate and the outer side of the upright plate are both provided with through holes, and a steel rod is inserted into the inside of the through holes.

[0008] As a preferred embodiment of this utility model, a base plate is fixedly connected to the bottom of the upright plate, and a reinforcing frame is fixedly connected to the inner side of the upright plate.

[0009] As a preferred embodiment of this utility model, the bottom of the lifting plate is provided with a connecting groove, and both sides of the inner wall of the connecting groove are provided with arc grooves. The two sides of the reinforcing plate away from the upright plate are fixedly connected with sliding rods, and the surface of the sliding rods is slidably connected to the inner wall of the arc groove.

[0010] As a preferred embodiment of this utility model, the inner wall of the channel steel is fixedly connected with a panel, and the panel is folded in shape.

[0011] As a preferred embodiment of this utility model, a connecting plate is fixedly connected to the inner side of the lifting plate, and screws are threadedly connected to both sides of the inner side of the connecting plate.

[0012] As a preferred embodiment of this utility model, sliding plates are fixedly connected to both sides of the lifting plate, and sliding grooves are provided on the inner side of the upright plate, with the surface of the sliding plate slidably connected to the inner wall of the sliding groove.

[0013] As a preferred embodiment of this utility model, each of the four corners of the top of the base plate is provided with a ground cone, the bottom of which penetrates the base plate and extends to the bottom of the base plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model, by setting up an installation and adjustment mechanism, uses a positioning frame and mounting plate to facilitate the positioning and installation of channel steel and steel components. At the same time, after the lifting plate is lowered, it is convenient for the user to lay the seepage-proof cloth on the outside of the steel components and the vertical plate. After the cloth is laid, the lifting plate is moved upward to make the steel components abut against the top of the tunnel to position the seepage-proof cloth. The seepage-proof cloth can play a protective role and prevent foreign objects such as soil and gravel from falling.

[0016] 2. This utility model, by setting up a movable groove, a reinforcing plate, a through hole and a steel rod, after the lifting plate has moved upward, flips the reinforcing plate to the bottom of the lifting plate, and inserts the steel rod into the through hole on the outside of the reinforcing plate through the outside of the upright plate, so that the reinforcing plate can be positioned and provide auxiliary support for the lifting plate.

[0017] 3. This utility model, by setting a connecting groove, an arc groove and a sliding rod, places the end of the reinforcing plate away from the upright plate inside the connecting groove. The arc groove allows the lifting plate to limit the movement of the sliding rod and the reinforcing plate, so that the lifting plate can drive the reinforcing plate to flip when it moves up and down. Furthermore, the flipping of the reinforcing plate can drive the sliding rod to slide inside the arc groove, further improving the stability of the reinforcing plate flipping. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the three-dimensional exploded structure of this utility model;

[0020] Figure 3 This is a three-dimensional structural diagram of the upright plate and lifting plate of this utility model;

[0021] Figure 4 This is a three-dimensional sectional view of the lifting plate of this utility model.

[0022] In the diagram: 1. Vertical plate; 2. Steel component; 3. Installation and adjustment mechanism; 31. Lifting plate; 32. Positioning frame; 33. Channel steel; 34. Mounting plate; 35. Waterproof cloth; 4. Movable groove; 5. Reinforcing plate; 6. Through hole; 7. Steel rod; 8. Base plate; 9. Reinforcing frame; 10. Connecting groove; 11. Arc groove; 12. Sliding rod; 13. Panel; 14. Connecting plate; 15. Screw; 16. Sliding plate; 17. Sliding groove; 18. Ground cone. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figures 1 to 4 As shown, the present invention provides a temporary support structure for the construction of steel lining in a water utilization dam tunnel, including a vertical plate 1 and a steel component 2. The steel component 2 is located inside the vertical plate 1, and an installation and adjustment mechanism 3 is provided inside the vertical plate 1.

[0025] The installation adjustment mechanism 3 includes a lifting plate 31, the two sides of which are slidably connected to the inner side of the upright plate 1. Several positioning frames 32 are fixedly connected to the top of the lifting plate 31. Channel steel 33 is inserted into the inside of the positioning frame 32. An installation plate 34 is fixedly connected to the top of the channel steel 33. The steel component 2 is fixedly installed on the inner side of the installation plate 34. A waterproof cloth 35 is laid on the outer side of the steel component 2 and the upright plate 1.

[0026] The inner side of the upright plate 1 is provided with a movable groove 4. The inner wall of the movable groove 4 is rotatably connected to a reinforcing plate 5 by a shaft pin. The top of the reinforcing plate 5 and the outer side of the upright plate 1 are provided with through holes 6. A steel rod 7 is inserted into the through hole 6. Multiple through holes 6 are provided on the outer side of the upright plate 1. After the lifting plate 31 moves the reinforcing plate 5, it is convenient for the user to insert it into the interior of the reinforcing plate 5 through the through holes 6 to position it.

[0027] The bottom of the lifting plate 31 is provided with a connecting groove 10, and both sides of the inner wall of the connecting groove 10 are provided with arc grooves 11. The two sides of the reinforcing plate 5 away from the upright plate 1 are fixedly connected with sliding rods 12, and the surface of the sliding rods 12 is slidably connected to the inner wall of the arc grooves 11.

[0028] Thus, the bottom of the upright plate 1 is fixedly connected to the base plate 8, and the inner side of the upright plate 1 is fixedly connected to the reinforcing frame 9. The user can place the lifting device on top of the base plate 8, so that the lifting device can drive the lifting plate 31 to move upward. The reinforcing frame 9 can protect the lifting device and reinforce the upright plates 1 on both sides.

[0029] A connecting plate 14 is fixedly connected to the inner side of the lifting plate 31. Both sides of the inner side of the connecting plate 14 are threaded with screws 15. Multiple screw holes are opened on the inner side of the upright plate 1. After the lifting plate 31 moves the connecting plate 14, the connecting plate 14 and the lifting plate 31 can be positioned by screwing the screws 15 into the corresponding screw holes.

[0030] In addition, sliding plates 16 are fixedly connected to both sides of the lifting plate 31, and sliding grooves 17 are opened on the inner side of the upright plate 1. The surface of the sliding plate 16 is slidably connected to the inner wall of the sliding groove 17. The lifting plate 31 can move up and down to drive the sliding plate 16 to slide up and down inside the sliding groove 17, thereby improving the stability of the movement of the lifting plate 31.

[0031] The inner wall of the channel steel 33 is fixedly connected with a panel 13. The panel 13 is folded in shape, which can further improve the stability of the channel steel 33.

[0032] A ground cone 18 is provided at each of the four corners of the top of the base plate 8. The bottom of the ground cone 18 penetrates the base plate 8 and extends to the bottom of the base plate 8.

[0033] The working principle and usage process of this utility model are as follows: First, move the base plate 8 and the upright plate 1 into the tunnel passage, positioning them on both sides of the passage. Then, blow the ground cone 18 underground to position the base plate 8. Next, install the steel components 2 inside the corresponding mounting plates 34 on both sides of the tunnel. Then, move the channel steel 33 and insert it into the positioning frame 32 to complete the initial positioning of the steel components 2. Then, evenly lay the impermeable cloth 35 on the outside of the steel components 2 and the upright plate 1. Finally, move the lifting equipment to the top of the base plate 8. The lifting equipment can... The device uses a multi-section telescopic electric cylinder or a lifting hydraulic cylinder. Then, the lifting equipment on the top of the base plate 8 is started simultaneously. The piston end of the lifting equipment drives the lifting plate 31 to move upward. The lifting plate 31 drives the positioning frame 32, channel steel 33, mounting plate 34, steel component 2 and seepage-proof cloth 35 on its top to move upward. When the steel component 2 is pressed against the top of the tunnel wall, the lifting equipment is closed. At this time, the seepage-proof cloth 35 is tightly attached to the tunnel wall, which can play a supporting role and at the same time prevent soil, gravel and other foreign objects from falling during construction.

[0034] Meanwhile, when the lifting plate 31 moves upward, it can drive the connecting plate 14 to move. After the movement is completed, the lifting plate 31 can be positioned by screwing the screw 15 on the inner side of the connecting plate 14 into the screw hole on the front side of the vertical plate 1. The movement of the lifting plate 31 can drive the reinforcing rod to move and rotate. After the lifting plate 31 has moved, the user can insert the steel rod 7 into the through hole 6 through the vertical plate 1 to position the reinforcing plate 5, so that the reinforcing plate 5 can provide auxiliary support for the lifting plate 31. At this time, the lifting equipment can be turned off and removed from the top of the bottom plate 8 for subsequent use. Then, the above operation can be repeated to evenly lay the seepage-proof cloth 35 inside the tunnel, which can achieve the effect of temporary support.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A temporary support structure for the construction of a steel lining in a water utilization dam tunnel, comprising a vertical plate (1) and steel components (2), characterized in that: The steel component (2) is located inside the vertical plate (1), and the vertical plate (1) is provided with an installation adjustment mechanism (3). The installation adjustment mechanism (3) includes a lifting plate (31), the two sides of which are slidably connected to the inner side of the upright plate (1). Several positioning frames (32) are fixedly connected to the top of the lifting plate (31). Channel steel (33) is inserted into the inside of the positioning frame (32). An installation plate (34) is fixedly connected to the top of the channel steel (33). The steel component (2) is fixedly installed on the inner side of the installation plate (34). A waterproof cloth (35) is laid on the outer side of the steel component (2) and the upright plate (1).

2. The temporary support structure for steel lining construction of a water utilization dam tunnel according to claim 1, characterized in that: The inner side of the upright plate (1) is provided with a movable groove (4), and the inner wall of the movable groove (4) is rotatably connected to a reinforcing plate (5) by a shaft pin. The top of the reinforcing plate (5) and the outer side of the upright plate (1) are provided with through holes (6), and a steel rod (7) is inserted into the through hole (6).

3. The temporary support structure for steel lining construction of a water utilization dam tunnel according to claim 1, characterized in that: The bottom of the upright plate (1) is fixedly connected to a base plate (8), and the inner side of the upright plate (1) is fixedly connected to a reinforcing frame (9).

4. The temporary support structure for steel lining construction of a water utilization dam tunnel according to claim 2, characterized in that: The bottom of the lifting plate (31) is provided with a connecting groove (10), and both sides of the inner wall of the connecting groove (10) are provided with arc grooves (11). The two sides of the reinforcing plate (5) away from the upright plate (1) are fixedly connected with sliding rods (12), and the surface of the sliding rods (12) is slidably connected to the inner wall of the arc grooves (11).

5. A temporary support structure for steel lining construction of a water utilization dam tunnel according to claim 1, characterized in that: The inner wall of the channel steel (33) is fixedly connected to a panel (13), and the panel (13) is folded in shape.

6. The temporary support structure for steel lining construction of a water utilization dam tunnel according to claim 1, characterized in that: The inner side of the lifting plate (31) is fixedly connected to a connecting plate (14), and both sides of the inner side of the connecting plate (14) are threadedly connected to screws (15).

7. A temporary support structure for steel lining construction of a water utilization dam tunnel according to claim 1, characterized in that: Both sides of the lifting plate (31) are fixedly connected with sliding plates (16), and the inner side of the upright plate (1) is provided with a sliding groove (17). The surface of the sliding plate (16) is slidably connected to the inner wall of the sliding groove (17).

8. A temporary support structure for steel lining construction of a water utilization dam tunnel according to claim 3, characterized in that: The four corners of the top of the base plate (8) are provided with ground cones (18), the bottom of which penetrates the base plate (8) and extends to the bottom of the base plate (8).

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