Fabricated tunnel lining device

Abstract

The utility model discloses an assembly type tunnel lining device which comprises a standard block and a current tunnel structure side line, the current tunnel structure side line is a section contour line of an unlined tunnel, and the standard block is a concrete precast block body with a tetrahedron special-shaped structure section. A standard block clamping groove opening and a standard block clamping groove hole are formed in one end of the concrete precast block body with the tetrahedral special-shaped structure section, a standard block tenon is arranged at the other end of the concrete precast block body with the tetrahedral special-shaped structure section, and an expansion rubber water stop block is fixed to the standard block tenon. The number of the standard blocks is multiple, and the multiple standard blocks are matched with the standard block clamping groove holes through the standard block tenons and are sequentially connected to form the assembly type lining completion structure. The problems that traditional tunnel lining construction is low in efficiency, quality is greatly affected by the environment, water stopping is troublesome, cost is high, and the tunnel lining is difficult to adapt to various tunnel sections are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hydraulic engineering, specifically relates to a fabricated tunnel lining device. BACKGROUND

[0002] In the field of hydraulic engineering, tunnel construction is of great importance, and tunnel lining, as a key link to ensure the safe and stable operation of the tunnel, has always been the focus of attention for engineering constructors. The traditional tunnel lining construction method has many limitations, which has a negative impact on the quality, progress and cost of the project.

[0003] Construction efficiency: Traditional cast-in-place concrete lining construction requires the construction of forms, binding of reinforcement and pouring of concrete inside the tunnel. Each process is time-consuming and labor-intensive. For example, in some large tunnel projects, each section of lining construction requires several days or even weeks, which greatly prolongs the construction period of the entire tunnel project. If it encounters bad weather or complex geological conditions, the construction progress will be further hindered, not only affecting the timely delivery of the project, but also increasing additional construction costs.

[0004] Construction quality: Cast-in-place construction is greatly affected by site environmental factors such as temperature, humidity, and differences in construction personnel's technical level. In a hot and dry environment, concrete can easily lose water too quickly, causing surface cracking; in a cold environment, the setting speed of concrete slows down, and the strength grows slowly, and even freezing damage may occur, affecting the overall quality of the lining. At the same time, due to the complexity of on-site construction, it is difficult to ensure that the pouring quality of each place of concrete reaches the ideal state, and defects such as honeycomb and pitted surface may occur, posing hidden dangers to the long-term safe operation of the tunnel.

[0005] Water sealing effect: The original tunnel lining structure usually needs to set up a water sealing device separately outside the structure for water sealing, which not only increases the construction process and cost, but also makes it difficult to ensure the installation quality of the water sealing device. Once the water sealing device has problems such as poor sealing and aging damage, it will cause tunnel leakage, affecting the normal use of the tunnel. Leakage may also cause softening and instability of the rock-soil mass around the tunnel, further threatening the structural safety of the tunnel.

[0006] Adaptability: Different tunnel projects have different cross-sectional shapes, sizes and geological conditions. The traditional lining structure is usually designed to be fixed, making it difficult to adapt to these changes. When encountering irregular cross-sections or special geological conditions of the tunnel, the traditional lining structure either needs to be adjusted and modified on site, increasing the construction difficulty and cost, or cannot meet the engineering requirements, affecting the stability and use function of the tunnel. INVENTION CONTENTS

[0007] The utility model aims at providing an assembly type tunnel lining device, solves traditional tunnel lining construction efficiency is low, quality is influenced by environment greatly, water stop is troublesome and cost is high, it is difficult to adapt to various tunnel section and other problems.

[0008] The utility model discloses a technical scheme that solves the above technical problem as follows: an assembly type tunnel lining device, comprising a standard block and a current tunnel structure edge line, the current tunnel structure edge line is the section contour line of an unlined tunnel, the standard block is a tetrahedron special-shaped structure section concrete prefabricated block, one end of the tetrahedron special-shaped structure section concrete prefabricated block is provided with a standard block clamping slot and a standard block clamping slot hole, the other end of the tetrahedron special-shaped structure section concrete prefabricated block is a standard block tenon, an expansion rubber water stop block is fixed on the standard block tenon,

[0009] The number of the standard blocks is several, and the several standard blocks are connected in sequence to form an assembly type lining completed structure through the cooperation of the standard block tenon and the standard block clamping slot hole.

[0010] As an assembly type tunnel lining device preferred scheme, the assembly type lining completed structure is connected in sequence by the mode that the standard block tenon passes through the standard block clamping slot hole of the adjacent standard block and is fixed in the standard block clamping slot, and is spliced around the inner side of the current tunnel structure edge line.

[0011] As an assembly type tunnel lining device preferred scheme, the shape and size of the standard block clamping slot are matched with the standard block tenon, so that the standard block tenon is clamped into the standard block clamping slot.

[0012] As an assembly type tunnel lining device preferred scheme, the expansion rubber water stop block is arranged around the standard block tenon, and after the standard block is installed, the expansion rubber water stop block is tightly attached to the inner wall of the standard block clamping slot hole.

[0013] As an assembly type tunnel lining device preferred scheme, the outer surface of the standard block is provided with an arc matched with the design arc of the tunnel, and the arcs between the adjacent standard blocks are smoothly transitioned.

[0014] As an assembly type tunnel lining device preferred scheme, a reinforcing rib is arranged in the standard block, and the reinforcing rib is used for enhancing the structural strength of the standard block.

[0015] As an assembly type tunnel lining device preferred scheme, the depth of the standard block clamping slot hole is greater than the length of the part of the standard block tenon inserted into the standard block clamping slot hole, so that the standard block adjusts the angle in the standard block clamping slot through the standard block tenon.

[0016] The beneficial effects of this utility model are as follows: First, the construction is efficient and convenient: the method of on-site splicing of prefabricated standard blocks reduces complex procedures such as formwork construction and rebar tying compared with traditional cast-in-place construction, greatly shortens the construction cycle, improves construction efficiency, and reduces construction difficulty.

[0017] Secondly, it has excellent water-stopping performance: the expanded rubber water-stopping block fixed on the tenon of the standard block fits tightly with the inner wall of the slot of the adjacent standard block after the standard blocks are spliced, forming a reliable water-stopping seal, which effectively avoids the problem of tunnel leakage. There is no need to set up a separate water-stopping device outside the structure, which simplifies the construction process.

[0018] Third, it has strong adaptability: The unique tetrahedral irregular structure of the standard block, combined with the adjustable slot, slot hole and tenon connection design, can adapt to tunnel cross sections of different shapes and sizes by adjusting the angle and curvature, which enhances the versatility and applicability of the device.

[0019] Fourth, reduced project costs: Improved construction efficiency, simplified water-stopping devices, and rational use of materials reduce manpower, material resources, and time costs, thereby lowering project investment and resulting in good economic benefits. Attached Figure Description

[0020] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0021] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0022] Figure 1 This is a schematic diagram of the existing tunnel structure edge line of the prefabricated tunnel lining device provided in this embodiment of the utility model;

[0023] Figure 2 This is a schematic diagram of the tunnel cross-section after prefabricated tunnel lining provided in this embodiment of the utility model;

[0024] Figure 3 This is a schematic diagram of the cross-section of a standard block of the prefabricated tunnel lining device provided in the embodiments of this utility model.

[0025] In the figure, 1, the existing tunnel structure edge line; 2, the assembled lining completed structure; 3, the standard block; 4, the standard block clamping slot; 5, the standard block clamping slot hole; 6, the standard block tenon; 7, the expanded rubber water stop block; 8, the standard block radian. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the utility model more apparent, obvious and easy to understand, the specific embodiments of the utility model are described in detail below. In the following description, a large number of specific details are set forth in order to fully understand the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terms used in the specification of the utility model are only for the purpose of describing the specific embodiments and are not intended to limit the utility model.

[0028] Referring to FIG. 1, FIG. 2 and FIG. 3, the utility model embodiment provides an assembled tunnel lining device, comprising a standard block 3 and an existing tunnel structure edge line 1, the existing tunnel structure edge line 1 is the cross-sectional contour line of the unlined tunnel, the standard block 3 is a tetrahedral special-shaped structure cross-section concrete prefabricated block, one end of the tetrahedral special-shaped structure cross-section concrete prefabricated block is provided with a standard block clamping slot 4 and a standard block clamping slot hole 5, the other end of the tetrahedral special-shaped structure cross-section concrete prefabricated block is a standard block tenon 6, and the expanded rubber water stop block 7 is fixed on the standard block tenon 6.

[0029] Specifically, the design of the tetrahedral special-shaped structure cross-section can better adapt to the irregular shape of the tunnel and improve the adhesion of the lining. The cooperation of the standard block clamping slot 4, the standard block clamping slot hole 5 and the standard block tenon 6 is similar to the mortise and tenon structure, so that the connection between the standard blocks 3 is stable. The expanded rubber water stop block 7 is fixed on the standard block tenon 6, and the elasticity of the rubber can effectively fill the gap when the standard blocks 3 are connected, thereby playing a water stopping role and preventing the tunnel from leaking.

[0030] The number of standard blocks 3 is several, and the several standard blocks 3 are connected in sequence to form the assembled lining completed structure 2 by matching the standard block tenon 6 with the standard block slot hole 5.

[0031] In the embodiment, the assembled lining completed structure 2 is connected in sequence by the way that the standard blocks 3 are connected by the standard block tenon 6 passing through the adjacent standard block slot hole 5 and fixed in the standard block slot opening 4, and is spliced around the inside of the existing tunnel structure edge line 1.

[0032] Specifically, the standard block tenon 6 passes through the standard block slot hole 5 and is fixed in the standard block slot opening 4, forming a nested connection and increasing the stability of the structure. Splicing around the inside of the existing tunnel structure edge line 1 can closely fit the inner wall of the tunnel, maximize the use of tunnel space, and at the same time provide uniform support for the tunnel, reducing the uneven stress on the inner wall of the tunnel.

[0033] In the embodiment, the shape and size of the standard block slot opening 4 are matched with the standard block tenon 6, so that the standard block tenon 6 is inserted into the standard block slot opening 4. The accurate matching of the shape and size makes the standard block tenon 6 tightly inserted into the standard block slot opening 4, avoiding loosening or shaking. This tight fit not only enhances the connection strength between the standard blocks 3, but also effectively transmits stress, so that the entire lining structure can work cooperatively when subjected to external force, improving the load-bearing capacity of the structure.

[0034] In the embodiment, the expansion rubber waterstop 7 is arranged around the standard block tenon 6, and after the standard block 3 is installed, the expansion rubber waterstop 7 is tightly fitted with the inner wall of the standard block slot hole 5.

[0035] Specifically, the expansion rubber waterstop 7 is arranged around the standard block tenon 6, which can seal the connection gap in all directions. After the standard block 3 is installed, the expansion rubber waterstop 7 is tightly fitted with the inner wall of the standard block slot hole 5, and the compression deformation characteristics of the expansion rubber waterstop 7 are used to fill the gap and prevent water penetration. Even in the case of high water pressure inside the tunnel, the expansion rubber waterstop 7 can further deform under pressure, enhancing the sealing effect and ensuring the waterproof performance of the tunnel.

[0036] In the embodiment, the outer surface of the standard block 3 is provided with an arc matching the design arc of the tunnel, and the arcs between adjacent standard blocks 3 are smoothly transitioned.

[0037] Specifically, the curvature of the outer surface of the standard block 3 matches the curvature of the tunnel design, which ensures the perfect fit of the lining structure with the inner wall of the tunnel, so that the lining can uniformly bear the pressure of the surrounding rock and soil of the tunnel. The curvature of adjacent standard blocks 3 smoothly transitions, avoiding stress concentration points, ensuring the uniformity of the mechanical properties of the structure, improving the overall stability of the lining structure, and reducing the risk of structural damage caused by excessive local stress.

[0038] In one possible embodiment, reinforcing ribs are provided in the standard block 3 to enhance the structural strength of the standard block 3. The reinforcing ribs can effectively improve the tensile, compressive and shear capacity of the standard block 3. When the surrounding rock and soil of the tunnel exerts pressure, tension or shear force on the lining structure, the reinforcing ribs can share these forces and prevent the standard block 3 from cracking, breaking and other damage, thereby prolonging the service life of the lining structure and ensuring the safe operation of the tunnel.

[0039] In one possible embodiment, the depth of the standard block slot hole 5 is greater than the length of the part of the standard block tenon 6 inserted into the standard block slot hole 5, so that the standard block 3 can adjust the angle by the standard block tenon 6 in the standard block slot 4.

[0040] Specifically, the depth of the standard block slot hole 5 is greater than the length of the part of the standard block tenon 6 inserted into the standard block slot hole 5, which provides space for the standard block 3 to adjust the angle. During actual installation, due to the possible unevenness or irregularity of the inner wall of the tunnel, through this design, the standard block 3 can adjust the angle within a certain range, better adapt to the actual shape of the tunnel, ensure the close fit of the lining structure with the inner wall of the tunnel, and improve the overall quality and stability of the lining.

[0041] The construction process of the utility model is as follows: first, construction preparation: according to the tunnel design scheme, the tetrahedral special-shaped structure section standard block 3 is accurately produced in the prefabrication factory, one end of the standard block 3 is provided with the standard block slot 4 and the standard block slot hole 5, the other end is provided with the standard block tenon 6, and the expansion rubber water stop block 7 is fixed on the standard block tenon 6, and the reinforcing rib is arranged in the standard block 3. Prepare hoisting and installation equipment such as cranes, positioning clamps, etc., to ensure that their performance is good and can meet the construction requirements. Measure and mark the existing tunnel structure line 1, determine the lining installation position, clean the inner wall of the tunnel, remove floatstone, sundries, etc., to ensure that the installation surface is flat and clean.

[0042] Second, hoist the standard block 3: use the crane to hoist the prefabricated standard block 3 to the tunnel installation site, and ensure that the standard block 3 is stable during hoisting to avoid damage caused by collision. Place the standard block 3 in order according to the installation sequence to facilitate quick access and installation later.

[0043] Third, the standard block 3 installation and splicing: the first standard block 3 is lifted to the designated installation position of the tunnel, the curvature of the outer surface of the standard block 3 is preliminarily aligned with the design curvature of the tunnel, the standard block tenon 6 of the subsequent standard block 3 is inserted into the standard block slot hole 5 of the previous standard block 3 with the aid of the positioning clamp, then the angle of the standard block 3 is adjusted, the standard block tenon 6 is clamped into the standard block slot 4 and fixed, the depth of the standard block slot hole 5 is greater than the length of the inserted part of the standard block tenon 6, the angle of the standard block 3 can be flexibly adjusted, and the irregular conditions of the inner wall of the tunnel are adapted. In the splicing process, the smooth transition of the standard block curvature 8 between the adjacent standard blocks 3 is ensured, and the roundness of the lining as a whole is ensured.

[0044] Third, water stop inspection and treatment: after each standard block 3 is installed, the fit of the expansion rubber water stop block 7 and the inner wall of the standard block slot hole 5 is checked, if the expansion rubber water stop block 7 is found to be offset, not tightly fitted and the like, timely adjustment is made. After all the standard blocks 3 are installed, the water stop effect of the entire lining structure is comprehensively checked, the gaps and weak points that may exist are sealed, and sealing glue and the like can be used for plugging, so that the water stop effect is good.

[0045] Fourth, quality acceptance: the appearance of the assembled lining completed structure 2 is checked, whether the splicing of the standard blocks 3 is tight, the surface is flat, the curvature meets the design requirements, and whether there are cracks, defects such as missing edges and corners. Professional measuring tools are used to detect the size, thickness, roundness and the like of the lining structure, so as to ensure that the design standards are met. The strength of the lining structure is sampled and detected, and the on-site coring and the like are used for detection, so that the structural strength of the standard block 3 meets the use requirements of the tunnel.

[0046] The technical features of the above-described embodiments can be combined arbitrarily, and to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, it should be considered that it is within the scope of the description.

[0047] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but it should not be understood as the limitation of the scope of the utility model patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A device for assembling a tunnel lining, comprising standard blocks (3) and a current tunnel structure outline (1), which is a cross-sectional profile line of an unlined tunnel, characterised in that: The standard block (3) is a tetrahedral special-shaped section concrete prefabricated block, one end of which is provided with a standard block clamping slot opening (4) and a standard block clamping slot hole (5), and the other end of which is a standard block tenon (6), and an expanded rubber water stop block (7) is fixed on the standard block tenon (6). The number of the standard blocks (3) is several, and the several standard blocks (3) are connected in sequence to form a fabricated lining completed structure (2) through cooperation of the standard block tenon (6) and the standard block clamping slot hole (5). The fabricated lining completed structure (2) is formed by connecting several standard blocks (3) in sequence through the standard block tenon (6) penetrating the adjacent standard block clamping slot hole (5) and being fixed in the standard block clamping slot opening (4), and is formed by being spliced around the inside of the existing tunnel structure line (1). The shape and size of the standard block clamping slot opening (4) are matched with the standard block tenon (6), so that the standard block tenon (6) is clamped into the standard block clamping slot opening (4). The depth of the standard block clamping slot hole (5) is greater than the length of the part of the standard block tenon (6) inserted into the standard block clamping slot hole (5), so that the standard block (3) adjusts the angle in the standard block clamping slot opening (4) through the standard block tenon (6).

2. The prefabricated tunnel lining device according to claim 1, characterized in that: The expanded rubber water stop block (7) is arranged around the standard block tenon (6), and after the standard block (3) is installed, the expanded rubber water stop block (7) is tightly attached to the inner wall of the standard block clamping slot hole (5).

3. The prefabricated tunnel lining device according to claim 1, characterized in that: The outer surface of the standard block (3) is provided with a standard block arc (8) matched with the design arc of the tunnel, and the standard block arcs (8) between adjacent standard blocks (3) are smoothly transitioned.

4. The prefabricated tunnel lining device according to claim 1, characterized in that: A reinforcing rib is arranged in the standard block (3), and the reinforcing rib is used to enhance the structural strength of the standard block (3). The expanded rubber water stop block (7) is arranged around the standard block tenon (6), and after the standard block (3) is installed, the expanded rubber water stop block (7) is tightly attached to the inner wall of the standard block clamping slot hole (5). The outer surface of the standard block (3) is provided with a standard block arc (8) matched with the design arc of the tunnel, and the standard block arcs (8) between adjacent standard blocks (3) are smoothly transitioned. A reinforcing rib is arranged in the standard block (3), and the reinforcing rib is used to enhance the structural strength of the standard block (3).

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