A longitudinal plate blind ditch

Abstract

The invention discloses a longitudinal plate-type blind ditch, comprising a blind ditch body, which is concave to one side to form a side concave cavity, wherein a plurality of convex shells are distributed in the side concave cavity, and the height of the convex shells is the same as the depth of the side concave cavity, and a waterproof baffle is arranged in the vertical direction at a position near the lower end of the opening side of the side concave cavity, and the waterproof baffle surrounds the side concave cavity into a semi-closed state, and a water inlet hole is arranged on the upper side wall of the side concave cavity. The upper and lower ends of the side concave cavity are respectively connected with self-adhesive edge strips at positions near the opening side thereof, and a non-woven fabric is arranged at the side opening of the side concave cavity, and the non-woven fabric is prefabricated as a whole with the self-adhesive edge strip and the waterproof baffle on the corresponding side. The invention completely replaces the traditional longitudinal tubular blind ditch, has a better effect on the initial support of the tunnel, has a relatively low requirement for the flatness of the initial support surface of the tunnel, and does not occupy the secondary lining space, has a better casting quality of the secondary lining and the effect of applying the water stop strip, is more convenient for construction, and has a good drainage effect.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel engineering drainage, and in particular to a longitudinal plate-type blind ditch. Background Art

[0002] The drainage system of tunnel engineering plays an important role in the safety of tunnel engineering operation. According to the current operation status of existing tunnels, water damage is an important factor affecting tunnel diseases. Therefore, for tunnel engineering that is "mainly drainage", the smooth flow of drainage system is the key to preventing water damage. At present, the commonly used drainage system in tunnels is mainly the pipe blind ditch system.

[0003] For the pipe blind ditch drainage system, the main problems are as follows:

[0004] (1) Mismatch between design and construction. Generally speaking, the design does not consider the installation space of the longitudinal blind ditch separately. The existing specifications have high requirements for the internal flatness of the primary support and the thickness and density of the secondary lining. Therefore, in order to meet the secondary lining thickness, the flatness of the primary support and the installation space of the longitudinal blind ditch, a large amount of over-excavation or intrusion support will be caused, and implementation is difficult. If the construction is carried out according to the designed dimensions, the secondary lining space will inevitably be occupied, resulting in insufficient secondary lining thickness;

[0005] (2) Secondary lining defects are difficult to avoid: After the tubular blind ditch system is installed, some parts protrude from the primary support surface. After the blind ditch is covered by the waterproof board, it is difficult to completely fill the secondary lining concrete, which may cause looseness or voids behind the lining.

[0006] (3) The installation of the tubular blind ditch is relatively complicated. It needs to be wrapped with non-woven fabric and then manually fixed on the initial support surface. At the same time, the initial support surface flatness is required to be high;

[0007] (4) The longitudinal blind ditch affects the effect of the waterstop: The longitudinal blind pipe has a greater impact on the external waterstop at the construction joint. The thickness of the secondary lining changes suddenly at the longitudinal blind ditch, making the installation of the external waterstop more difficult and affecting the effect. At the same time, due to the large reduction in the thickness of the secondary lining, the distance between the external waterstop and the buried waterstop is relatively close, which affects the pouring quality and waterproof effect of the secondary lining concrete.

[0008] In order to ensure operational safety, a longitudinal plate-type drainage blind ditch is urgently needed to address the problems existing in the current pipe-type blind ditch. Summary of the invention

[0009] In view of the current technical problems, the present invention provides a longitudinal plate-type blind ditch to solve the problems caused by structural limitations in the prior art.

[0010] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0011] A longitudinal plate-type blind ditch comprises a blind ditch body, which is recessed to one side to form a side concave cavity, wherein a plurality of convex shells are distributed in the side concave cavity, wherein the convex shells are solid structures, wherein the extension direction of the convex shells is the same as the recessed direction of the side concave cavity, and the height of the convex shells is the same as the depth of the side concave cavity, wherein a waterproof baffle is arranged in a vertical direction at a position near the lower end of the opening side of the side concave cavity, wherein the waterproof baffle surrounds the side concave cavity into a semi-closed state, wherein a water inlet hole is arranged on the upper end side wall of the side concave cavity, wherein the upper and lower ends of the side concave cavity are respectively connected with self-adhesive edge strips at positions near the opening side thereof, and wherein a non-woven fabric is arranged at the side opening of the side concave cavity, wherein the non-woven fabric is prefabricated as a whole with the self-adhesive edge strip and the waterproof baffle on the corresponding side.

[0012] The above technical solution replaces the traditional longitudinal tubular blind ditch. When in use, it is attached to the initial support surface of the tunnel through the self-adhesive edge strip. Then, non-woven fabrics and waterproof boards are laid on the inner side of the blind ditch body. On this basis, the internal secondary lining is constructed. The convex shell supports the initial support of the tunnel. The seepage water in the tunnel soil layer enters the side concave cavity through the water inlet hole and is collected and discharged. The seepage water in the blind ditch body is directly collected and discharged through the blind ditch. The convex shell in this solution is solid, which has a better support effect on the initial support of the tunnel, has a lower requirement for the flatness of the initial support surface of the tunnel, and does not occupy the secondary lining space. The casting quality of the secondary lining and the application effect of the water stop are both good. The construction is also more convenient, which has great economic advantages.

[0013] Preferably, the cross-section of the side concave cavity is a sideways isosceles trapezoid, and the water inlet is located on the waist of the isosceles trapezoid.

[0014] Preferably, the convex shells are arranged in a rectangular shape or a plum blossom shape in the side concave cavity.

[0015] Preferably, the convex shell away from the upper and lower side walls of the side concave cavity is a boss structure.

[0016] Preferably, the convex shell near the upper and lower side walls of the side concave cavity is a chamfered pyramid structure, and the side of the chamfered pyramid structure facing the upper and lower side walls of the side concave cavity is in contact with the side walls of the side concave cavity. Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention completely replaces the traditional tubular blind ditch, has a better effect on the initial support of the tunnel, has a relatively low requirement for the flatness of the initial support surface of the tunnel, and does not occupy the secondary lining space. The casting quality of the secondary lining and the application effect of the water stop are both better, the construction is more convenient, the drainage effect is good, and it has great application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A top view of the present invention;

[0018] Figure 2 for Figure 1 AA section view in;

[0019] Figure 3 for Figure 1 BB section view in. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with test examples and specific implementation methods. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0021] In the description of the present invention, it is necessary to understand that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0023] As attached Figure 1 -Attached Figure 3 A longitudinal plate-type blind ditch shown in the figure comprises a blind ditch body 1, which is concave to one side to form a side concave cavity 5, wherein a plurality of convex shells 2 are distributed in the side concave cavity 5, and the convex shells 2 are arranged in a rectangular or plum blossom shape in the side concave cavity 5, wherein the convex shells 2 are solid structures, and the convex shells 2 of the solid structure are more stable for the force transmission between the primary support and the secondary lining of the tunnel, wherein the extension direction of the convex shells 2 is the same as the concave direction of the side concave cavity 5, and the height of the convex shells 2 is the same as the concave depth of the side concave cavity 5, and a waterproof baffle 6 is arranged in the vertical direction at the position near the lower end of the opening side of the side concave cavity 5, wherein the waterproof baffle 6 is provided at the lower end of the side concave cavity 5, and ... The baffle plate 6 surrounds the side concave cavity 5 into a semi-closed state, that is, the lower end of the waterproof baffle plate 6 contacts the lower end side wall of the side concave cavity 5 and closes the lower end of the side concave cavity 5, and a gap is left between the upper end of the waterproof baffle plate 6 and the upper end side wall of the side concave cavity 5. The convex shell 2 close to the lower end side wall of the side concave cavity 5 is covered by the waterproof baffle plate 6, and the convex shell 2 close to the upper end side wall of the side concave cavity 5 is not covered by the waterproof baffle plate 6. The height of the waterproof baffle plate 6 can be selected according to specific circumstances. A water inlet hole 3 is provided on the upper end side wall of the side concave cavity 5. The cross-section of the side concave cavity 5 is a side-mounted isosceles trapezoid, that is, the water inlet hole 3 is located on the waist of the isosceles trapezoid.

[0024] The convex shell 2 is a boss or hemispherical structure. In this embodiment, the convex shell away from the upper and lower side walls of the side concave cavity 5 is preferably a boss structure, and the convex shell close to the upper and lower side walls of the side concave cavity 5 is in contact with the upper and lower side walls of the side concave cavity 5 (such as the attached Figure 2 As shown), the convex shell near the upper and lower side walls of the side concave cavity 5 can be designed as a side-mounted chamfered pyramid structure, and the side of the chamfered pyramid structure facing the upper and lower side walls of the side concave cavity 5 is in contact with the upper and lower side walls of the side concave cavity 5, which has a better supporting effect for the initial support of the tunnel.

[0025] In order to facilitate construction, self-adhesive tapes 4 are respectively connected to the opening side of the side concave cavity 5 near its upper and lower ends, that is, the self-adhesive tapes 4 are connected to the two waists of the inverted isosceles trapezoid. The self-adhesive tapes 4 can be made of Velcro tapes or other self-adhesive strips. At the same time, a non-woven fabric 7 is provided at the opening of the side concave cavity 5. The non-woven fabric 7 is prefabricated as a whole with the self-adhesive tapes 4 and the waterproof baffle 6 on the corresponding side. The non-woven fabric 7 can cover the opening side of the side concave cavity 5 and can be directly adhered to the surface of the primary support of the tunnel through the self-adhesive tapes 4. At this time, the convex shell 2 supports the primary support of the tunnel.

[0026] The above describes the preferred specific embodiments of the present invention. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A longitudinal plate blind ditch, Features: The invention comprises a blind ditch body (1), wherein the blind ditch body (1) is recessed to one side to form a side recessed cavity (5), wherein a plurality of convex shells (2) are distributed in the side recessed cavity (5), wherein the convex shells (2) are solid structures, wherein the extension direction of the convex shells (2) is the same as the recessed direction of the side recessed cavity (5), and the height of the convex shells (2) is the same as the depth of the side recessed cavity (5), and a waterproof baffle (6) is arranged in a vertical direction at a position near the lower end of the opening side of the side recessed cavity (5), wherein the waterproof baffle (6) surrounds the side recessed cavity (5) into a semi-closed state, and a waterproof baffle (6) is arranged at the upper side of the side recessed cavity (5). A water inlet hole (3) is provided on the end side wall, and the upper and lower ends of the side concave cavity (5) are respectively connected with self-adhesive edge strips (4) for adhering to the initial support surface of the tunnel near the opening side thereof, and a non-woven fabric (7) is provided at the side opening of the side concave cavity (5), and the non-woven fabric (7) is prefabricated as a whole with the self-adhesive edge strip (4) and the waterproof baffle (6) on the corresponding side; the cross section of the side concave cavity (5) is a side-mounted isosceles trapezoid, and the water inlet hole (3) is located on the waist of the isosceles trapezoid; the convex shells (2) are arranged in a rectangular or plum blossom shape in the side concave cavity (5).

2. A longitudinal plate-type blind ditch according to claim 1, Features: The convex shell (2) at the side walls away from the upper and lower ends of the side concave cavity (5) is a boss structure.

3. A longitudinal plate-type blind ditch according to claim 1, Features: The convex shell (2) near the upper and lower side walls of the side concave cavity (5) is a chamfered pyramid structure, and one side of the chamfered pyramid structure facing the upper and lower side walls of the side concave cavity (5) is in contact with the side wall of the side concave cavity (5).

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