Convenient and fast tunnel secondary lining concrete end sealing and leaking stoppage device

Abstract

The utility model relates to the technical field of secondary lining plugging equipment, in particular to a convenient tunnel secondary lining concrete end sealing plugging device which comprises a plugging wood formwork and a plurality of plugging plugs, the plugging wood formwork is in a semi-ring shape, the inner side of the plugging wood formwork is fixedly connected with a secondary lining trolley steel formwork, and the plugging plugs are arranged on the plugging wood formwork. The outer end of the plugging wood template faces a rock excavation surface; the sealing plug is in the shape of a triangular cylinder, the sealing plug comprises a bottom surface, a back surface, an inclined surface and two side surfaces, the bottom surface abuts against a rock excavation surface, the back surface faces the interior of a concrete to-be-poured area, and the inclined surface is provided with a comb-tooth-shaped groove and is clamped with the sealing wood formwork; the side faces of the multiple plugging plugs abut against the whole outer end of the to-be-poured concrete filling area in sequence, and the time needed for fixing the plugging formwork is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of secondary lining plugging equipment, in particular to a convenient tunnel secondary lining concrete end plugging and leak stopping device. Background Technique

[0002] At present, all tunnel projects in the fields of highway and hydropower still mostly adopt the blasting method for tunnel excavation construction. Even though the smooth blasting technology is very mature at present, the excavation contour line still cannot completely coincide with the designed excavation contour line. The flatness of the rock excavation surface is affected by many factors such as rock fissures and rock mass trends, resulting in uneven excavation surfaces.

[0003] When pouring the secondary lining concrete of the tunnel excavation, in the construction process of installing the end formwork, there must be a gap between the steel formwork of the secondary lining trolley and the irregular rock excavation surface. The gap between the steel formwork of the secondary lining trolley and the irregular rock excavation surface is the area where concrete is to be poured, and the outer end needs to be plugged to facilitate the filling of the area where concrete is to be poured by pouring concrete in the subsequent project.

[0004] At present, wooden wedges or sponge strips are mostly used as plugging formwork. To prevent the plugging formwork from being pushed open by the lateral pressure of the concrete and causing the poured concrete to leak out, it is often necessary to further fix the sponge strips and wooden wedges with backstays. It takes too much time to fix multiple sponge strips or wooden wedges individually. Content of the Utility Model

[0005] The utility model provides a convenient tunnel secondary lining concrete end plugging and leak stopping device to reduce the time required for fixing the plugging formwork.

[0006] To solve the above technical problems, the technical solutions adopted by the utility model are as follows:

[0007] A convenient tunnel secondary lining concrete end plugging and leak stopping device includes a plugging wooden formwork and a plurality of plugging heads. The plugging wooden formwork is semi-circular. The inner end of the plugging wooden formwork is fixedly connected to the steel formwork of the secondary lining trolley, and the outer end of the plugging wooden formwork faces the rock excavation surface. The shape of the plugging head is a triangular prism. The plugging head includes a bottom surface, a back surface, an inclined surface and two side surfaces. The bottom surface abuts against the rock excavation surface, the back surface faces the inside of the area where concrete is to be poured, and the inclined surface is provided with a comb-shaped groove and is clamped with the plugging wooden formwork. The side surfaces of a plurality of plugging heads are sequentially abutted to fill the entire outer end of the area where concrete is to be poured.

[0008] Furthermore, it also includes a series rope. The plugging head is provided with a through groove for the series rope to pass through. The through groove communicates with the two side surfaces of the plugging head, and the series rope sequentially passes through the through grooves of a plurality of plugging heads.

[0009] Preferably, the cross-section of the plugging head is an isosceles right triangle, and the angles of the bottom surface and the back surface of the triangular prism are right angles.

[0010] Preferably, the plugging plug is made of EPE pearl cotton.

[0011] Furthermore, the plugging formwork and the plugging plug are fixedly connected by iron nails.

[0012] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0013] The plugging plug of the utility model is a triangular prism, and the triangular prism includes a bottom surface, a back surface, an inclined surface and two side surfaces. The bottom surface abuts against the rock excavation surface, having sufficient contact surface. Coupled with the roughness of the rock excavation surface itself, there is great friction after applying pressure and it is difficult to have relative movement. The back surface faces the inside of the concrete pouring area to be poured, and the inclined surface faces the outside of the concrete pouring area to be poured. The inclined surface is provided with comb-shaped grooves and is clamped with the plugging formwork. The inclined surface and the comb-shaped grooves are provided so that the plugging formwork and the plugging plug can be clamped at different intervals. The rock excavation surface is irregular and the intervals from the plugging formwork at different positions are different, and both the plugging formwork and the plugging plug can be successfully clamped. After clamping, the plugging plug does not need additional fixation, thereby reducing the time required for fixing the plugging formwork. Description of the Drawings

[0014] Figure 1 It is the overall view of the application of the utility model.

[0015] Figure 2 It is the series connection diagram of the plugging plugs.

[0016] Figure 3 It is the A-A cross-sectional view of the plugging formwork and the plugging plug.

[0017] The meanings of the reference numerals in the figure are as follows: 1 - steel formwork of the secondary lining trolley, 2 - plugging formwork, 3 - plugging plug, 31 - bottom surface, 32 - back surface, 33 - inclined surface, 34 - side surface, 35 - comb-shaped groove, 36 - through groove, 4 - rock excavation surface, 5 - series connection rope. Specific Embodiments

[0018] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the utility model, so as to have a further understanding of the concept of the utility model, the technical problems to be solved, the technical features constituting the technical solutions and the technical effects brought about.

[0019] Such as Figure 1 、 Figure 3As shown in the figure, a convenient tunnel secondary lining concrete end sealing and leakage plugging device includes a plugging wooden formwork 2 and a plurality of plugging heads 3. The plugging wooden formwork 2 is semi-circular. The inner end of the plugging wooden formwork 2 is fixedly connected to the steel formwork 1 of the secondary lining trolley. The outer end of the plugging wooden formwork 2 faces the rock excavation surface 4. The plugging head 3 is in the shape of a triangular prism. The plugging head 3 includes a bottom surface 31, a back surface 32, an inclined surface 33 and two side surfaces 34. The bottom surface 31 abuts against the rock excavation surface 4. The back surface 32 faces the inside of the concrete pouring area. The inclined surface 33 is provided with a comb-shaped groove 35 and is clamped with the plugging wooden formwork 2. The side surfaces 34 of the plurality of plugging heads 3 are sequentially abutted to fill the entire outer end of the concrete pouring area.

[0020] The problem with the current plugging formwork is that when using a wooden wedge or a sponge strip as the plugging formwork, after the wooden wedge or the sponge strip is installed, its own stability is poor and it is easy to fall off, so it needs to be fixed. Currently, the sponge strip and the wooden wedge are further fixed with a back support. The subsequent workload after installation is large and the time spent is long.

[0021] The utility model uses the plugging wooden formwork 2 and a plurality of plugging heads 3 in cooperation. The plugging wooden formwork 2 is fixedly installed on the steel formwork 1 of the secondary lining trolley and is located at the outermost end of the steel formwork 1 of the secondary lining trolley. The plugging heads 3 are filled between the plugging wooden formwork 2 and the rock excavation surface 4 to complete the plugging. Structurally speaking, the plugging head 3 is in the shape of a triangular prism, including a bottom surface 31, a back surface 32, an inclined surface 33 and two side surfaces 34. The bottom surface 31 abuts against the rock excavation surface 4 and has enough contact surface. Coupled with the roughness of the rock excavation surface 4 itself, the friction is large after applying pressure and it is difficult to move relatively. The back surface 32 faces the inside of the concrete pouring area, and the inclined surface 33 faces the outside of the concrete pouring area. The inclined surface 33 is provided with a comb-shaped groove 35 and is clamped with the plugging wooden formwork 2. The inclined surface 33 and the comb-shaped groove 35 are provided so that the plugging wooden formwork 2 and the plugging head 3 can be clamped at different spacings. The rock excavation surface 4 is irregular and the spacings at different positions from the plugging wooden formwork 2 are different, but the plugging wooden formwork 2 and the plugging head 3 can both be successfully clamped. The reason for the instability of the existing plugging formwork is that the concrete in the concrete pouring area exerts pressure on the plugging formwork from the inside, resulting in falling. However, when the triangular prism structure of the plugging head 3 in the present application exerts pressure from the inside of the concrete pouring area, the plugging head 3 cannot be pushed from the inside of the concrete pouring area. Therefore, the utility model reduces the time required for fixing.

[0022] Such as Figure 2As shown in the figure, further, it further includes a series connection rope 5; the plugging plug 3 is provided with a through groove 36 for the series connection rope 5 to pass through, the through groove 36 communicates with two side surfaces 34 of the plugging plug 3, and the series connection rope 5 sequentially passes through the through grooves 36 of multiple plugging plugs 3. Using the series connection rope 5 to sequentially connect multiple plugging plugs 3 in series can facilitate the construction personnel to pick up during the construction process, and can also make the overall embedding of multiple plugging plugs 3 more stable by tightening the series connection rope 5 after the plugging plugs 3 are installed.

[0023] Preferably, the cross-section of the plugging plug 3 is an isosceles right triangle, and the angles of the bottom surface 31 and the back surface 32 of the plugging plug 3 are right angles. The function of the inclined surface 33 is to provide the comb-shaped groove 35, and then form a clamping connection with the plugging wooden formwork 2. However, if the angle of the inclined surface 33 is too large, the clamping connection between the plugging plug 3 and the plugging wooden formwork 2 will be unstable and easy to fall off; if the angle of the inclined surface 33 is too small, the overall length of the plugging plug 3 will be too long and inconvenient to install. The inclined surface angle of the isosceles right triangle is moderate, which can ensure stable clamping and the overall length of the plugging plug 3 will not be too long. The angle of the inclined surface 33 is the included angle between the inclined surface 33 and the bottom surface 31.

[0024] Preferably, the material of the plugging plug 3 is EPE pearl cotton. The surface of the EPE pearl cotton can generate a certain deformation by applying pressure, which is convenient for clamping, and has a large friction and good fixing effect.

[0025] Further, the plugging wooden formwork 2 and the plugging plug 3 are fixedly connected by iron nails. The fixing can be further strengthened by increasing the number of iron nails.

[0026] In the description of the present invention, the terms "connection" and "fixation" can be fixed connection, processing and forming, welding, or mechanical connection. Understand the specific meanings of the above terms in the present invention according to the specific situation.

[0027] In the description of the present invention, the terms "center", "upper", "lower", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying a specific orientation that the device or element must have. Therefore, it cannot be understood as a limitation to the present invention.

[0028] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A convenient tunnel secondary lining concrete end sealing and plugging device, characterized by: The invention comprises a plugging wood formwork (2) and a plurality of plugging plugs (3), wherein the plugging wood formwork (2) is semi-circular, the inner end of the plugging wood formwork (2) is fixedly connected to the steel formwork (1) of the second lining trolley, and the outer end of the plugging wood formwork (2) faces the rock excavation surface (4); the plugging plug (3) is in the shape of a triangular prism, and comprises a bottom surface (31), a back surface (32), an inclined surface (33) and two side surfaces (34); the bottom surface (31) abuts against the rock excavation surface (4), the back surface (32) faces the inside of the concrete pouring area, and the inclined surface (33) is provided with a comb-tooth groove (35) and is clamped with the plugging wood formwork (2); the side surfaces (34) of the plurality of plugging plugs (3) sequentially abut against the entire outer end of the filling concrete pouring area.

2. A convenient tunnel secondary lining concrete end sealing and plugging device according to claim 1, characterized in that: It also includes a series rope (5); the sealing plug (3) is provided with a through slot (36) for the series rope (5) to pass through, the through slot (36) communicating with two side surfaces (34) of the sealing plug (3), and the series rope (5) passes through the through slots (36) of a plurality of sealing plugs (3) in sequence.

3. A convenient tunnel secondary lining concrete end sealing and plugging device according to claim 1, characterized in that: The cross section of the sealing plug (3) is an isosceles right triangle, and the angles of the bottom surface (31) and the back surface (32) of the triangular prism are right angles.

4. A convenient tunnel secondary lining concrete end sealing and plugging device according to claim 1, characterized in that: The sealing plug (3) is made of EPE pearl cotton.

5. A convenient tunnel secondary lining concrete end sealing and plugging device according to claim 1, characterized in that: The blocking wooden template (2) and the blocking plug (3) are fixedly connected by iron nails.

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