D-shaped blocking structure for shield tunnel

Abstract

The utility model discloses a D-shaped plugging structure for a shield tunnel, which relates to the technical field of shield tunnel plugging, and comprises a D-shaped reinforcing plate, a mounting mechanism arranged on the outer wall of the D-shaped reinforcing plate and used for mounting the whole structure, and a sealing connecting mechanism arranged on the inner side of the D-shaped reinforcing plate and used for sealing the whole structure. The D-shaped plugging structure for the shield tunnel is used for being connected with injection molding pipe fittings in a sealed mode, the installation mechanism comprises a sealing plate, the D-shaped plugging structure for the shield tunnel is provided with the installation mechanism, a structure convenient to install is generally designed through a fixing assembly in the installation mechanism, and the D-shaped plugging structure can be rapidly and accurately installed in place in the tunnel; and meanwhile, the fixing assembly can ensure that the D-shaped plugging structure is tightly attached to the tunnel wall, gaps between the plugging structure and the tunnel wall are reduced, and therefore the sealing performance of the plugging structure is improved, and underground water, soil particles and the like are prevented from leaking into the tunnel through the gaps.

Description

TECHNICAL FIELD

[0001] The utility model relates to shield tunnel plugging technical field, concretely to a kind of D type plugging structure for shield tunnel. BACKGROUND

[0002] Shield method is a full mechanization construction method in subsurface excavation method construction, it is shield machine in ground propulsion, through shield shell and segment support around rock to prevent collapse into tunnel, simultaneously with cutting device in front of excavation face to carry out soil excavation, through soil removal machinery to be exported outside hole, rely on jack to pressurize in rear portion and assemble prefabricated cement mortar segment, form a kind of mechanized construction method of tunnel structure.

[0003] The utility model discloses a kind of shield tunnel receiving portal plugging structures with the announcement number CN216974834U, including receiving portal being located at one end of tunnel, further including receiving ring pipe, inner wall steel pipe, outer wall steel pipe and plugging steel ring, inner wall steel pipe is tightly on the inner wall of receiving portal, outer wall steel pipe is set on the outer wall of receiving ring pipe and forms grouting interval between receiving ring pipe, plugging steel ring is fixed between inner wall steel pipe and outer wall steel pipe, for plugging the gap between inner wall steel pipe and outer wall steel pipe, receiving ring pipe is provided with grouting hole, outer wall steel pipe is provided with over grouting hole.The shield tunnel receiving portal plugging structure structure design is reasonable, good stability and good plugging effect.

[0004] As shown in the above device, the plugging structure for shield tunnel of prior art, although structure design is reasonable, good stability and good plugging effect, but lack the guidance and fixation of installation structure, D type plugging structure can not be accurately positioned to predetermined position in installation process, need to spend more time and effort to adjust and calibrate, increase the difficulty and workload of construction. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of prior art, the utility model provides a kind of D type plugging structure for shield tunnel, solve the problems of prior art.

[0006] To achieve the above object, the utility model is realized by the following technical scheme: a kind of D type plugging structure for shield tunnel, including D type reinforcing plate, further including:

[0007] Mounting mechanism, the mounting mechanism is set up in the outer wall of D type reinforcing plate, for the installation of structure whole;

[0008] Sealing connection mechanism, set up in the inner side of D type reinforcing plate, for sealing connection injection molding pipe fitting;

[0009] The mounting mechanism comprises a sealing plate arranged on the outer wall of the D-shaped reinforcing plate, a threaded hinge hole B is formed on the outer wall of the sealing plate, a bolt is threadedly connected to the inner wall of the sealing plate, and a fixing assembly is arranged at the bottom end of the sealing plate.

[0010] Preferably, the fixing assembly comprises an insertion ring arranged on the outer wall of the D-shaped reinforcing plate, a fixed screw is fixedly connected to one end of the insertion ring, an adjusting nut is threadedly connected to the outer wall of the fixed screw, a movable soft plate is fixedly connected to the other end of the fixed screw, and a threaded groove is formed on the outer wall of the fixed screw.

[0011] Preferably, the sealing connection mechanism comprises a threaded pipe arranged on the inner side of the D-shaped reinforcing plate, a connecting sleeve is fixedly connected to one end of the threaded pipe, a limiting cylinder is fixedly connected to the inner wall of the threaded pipe, a reset spring A is sleeved on the outer wall of the limiting cylinder, a sliding ring is fixedly connected to one end of the reset spring A, a sealing ring is arranged on the inner wall of the limiting cylinder, a pushing ring is slidingly connected to the outer wall of the connecting sleeve, a movable block is fixedly connected to the inner wall of the pushing ring, a reset spring B is fixedly connected to one end of the movable block, a limiting groove is formed in the inner wall of the connecting sleeve, and a limiting valve ball is movably connected in the limiting groove.

[0012] Preferably, a welding plate is welded on the outer wall of the D-shaped reinforcing plate, a D-shaped plugging plate is fixedly installed on the outer wall of the D-shaped reinforcing plate and used for abutting against the inner wall of the tunnel, and an injection port is formed on the outer wall of the D-shaped reinforcing plate and used for flowing out of injection materials and filling gaps in the inner wall of the tunnel.

[0013] Preferably, a threaded sleeve is fixedly installed on the inner wall of the D-shaped reinforcing plate and used for threadedly connecting the sealing connection mechanism.

[0014] Preferably, an injection groove is formed on the outer wall of the D-shaped reinforcing plate and used for filling sealing materials, an installation groove is formed in the inner wall of the injection groove, and the D-shaped reinforcing plate is connected with the mounting mechanism through the installation groove.

[0015] Compared with the prior art, the D-shaped plugging structure for the shield tunnel has the following beneficial effects:

[0016] 1. The D-shaped plugging structure for the shield tunnel is provided with a mounting mechanism, the fixing assembly in the mounting mechanism is usually designed to have a structure facilitating installation, the D-shaped plugging structure can be quickly and accurately installed in place in the tunnel, the fixing assembly can ensure that the D-shaped plugging structure is closely abutted against the tunnel wall, gaps between the plugging structure and the tunnel wall are reduced, the sealing performance of the plugging structure is improved, and underground water, soil particles and the like are prevented from leaking into the tunnel through the gaps.

[0017] 2、The D-shaped plugging structure for the shield tunnel is provided with a sealing connecting mechanism, through the sealing connecting mechanism, the position of the injection molding pipe can be ensured to be accurate and fixed firmly, displacement or loosening will not occur in the grouting process, so that the uniformity and compactness of grouting are ensured, the grouting quality is improved, the plugging effect is ensured, and meanwhile the sealing connecting mechanism with threaded connection has the characteristic of being reusable, when later maintenance or re-grouting is required, the sealing connecting mechanism can be conveniently disassembled and reinstalled, and the maintenance cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic view of the utility model;

[0019] Figure 2 It is a whole structure sectional view of the utility model;

[0020] Figure 3 It is a mounting mechanism schematic view of the utility model;

[0021] Figure 4 It is a fixed assembly sectional view of the utility model;

[0022] Figure 5 It is a sealing connecting mechanism front view of the utility model;

[0023] Figure 6 It is a sealing connecting mechanism sectional view of the utility model.

[0024] In the drawing: 1, D-shaped reinforcing plate; 2, welded plate; 3, D-shaped plugging plate; 4, injection molding port; 5, threaded sleeve; 6, sealing connecting mechanism; 61, threaded pipe; 62, connecting sleeve; 63, pushing ring; 64, limiting cylinder; 65, reset spring A; 66, sliding ring; 67, reset spring B; 68, sealing ring; 69, limiting groove; 610, limiting valve ball; 7, injection molding groove; 8, mounting mechanism; 81, sealing plate; 82, threaded hinged hole B; 83, bolt; 84, fixed assembly; 841, insertion ring; 842, fixed screw rod; 843, adjusting nut; 844, movable soft plate; 845, threaded groove. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] Referring to Figures 1-6 The utility model provides the following two technical solutions:

[0027] The first embodiment is a D-shaped plugging structure for a shield tunnel, comprising a D-shaped reinforcing plate 1, further comprising:

[0028] A mounting mechanism 8 is arranged on the outer wall of the D-shaped reinforcing plate 1 for mounting the structure as a whole;

[0029] A sealing connection mechanism 6 is arranged on the inner side of the D-shaped reinforcing plate 1 for sealing and connecting the injection molding pipe;

[0030] A welding plate 2 is welded to the outer wall of the D-shaped reinforcing plate 1, a D-shaped plugging plate 3 is fixedly installed on the outer wall of the D-shaped reinforcing plate 1 for adhering to the inner wall of the tunnel, an injection molding port 4 is arranged on the outer wall of the D-shaped reinforcing plate 1 for the outflow of injection molding material, and the gap between the D-shaped reinforcing plate 1 and the inner wall of the tunnel is filled.

[0031] A threaded sleeve 5 is fixedly installed on the inner wall of the D-shaped reinforcing plate 1 for threaded connection with the sealing connection mechanism 6.

[0032] An injection molding groove 7 is arranged on the outer wall of the D-shaped reinforcing plate 1 for filling sealing material, an installation groove is arranged on the inner wall of the injection molding groove 7, and the D-shaped reinforcing plate 1 is connected with the mounting mechanism 8 through the installation groove.

[0033] The mounting mechanism 8 comprises a sealing plate 81 arranged on the outer wall of the D-shaped reinforcing plate 1, a threaded hinge hole B82 is arranged on the outer wall of the sealing plate 81, a bolt 83 is threaded connected to the inner wall of the sealing plate 81, and a fixing assembly 84 is arranged at the bottom end of the sealing plate 81.

[0034] The fixing assembly 84 comprises an insertion ring 841 arranged on the outer wall of the D-shaped reinforcing plate 1, a fixed screw rod 842 is fixedly connected to one end of the insertion ring 841, an adjusting nut 843 is threaded connected to the outer wall of the fixed screw rod 842, a movable soft plate 844 is fixedly connected to the other end of the fixed screw rod 842, and a threaded groove 845 is arranged on the outer wall of the fixed screw rod 842.

[0035] The D-shaped plugging structure for a shield tunnel is provided with a mounting mechanism 8, the fixing assembly 84 in the mounting mechanism 8 is usually designed to facilitate installation, so that the D-shaped plugging structure can be quickly and accurately installed in place in the tunnel, and the fixing assembly 84 can ensure that the D-shaped plugging structure is closely adhered to the tunnel wall, reducing the gap between the plugging structure and the tunnel wall, thereby improving the sealing performance of the plugging structure and preventing underground water, soil particles, etc. from leaking into the tunnel through the gap.

[0036] The second embodiment, the main difference from the first embodiment is that the sealing connection mechanism 6 comprises a threaded pipe 61, which is arranged on the inner side of the D-shaped reinforcing plate 1, one end of the threaded pipe 61 is fixedly connected with a connecting sleeve 62, the inner wall of the threaded pipe 61 is fixedly connected with a limiting cylinder 64, the outer wall of the limiting cylinder 64 is sleeved with a reset spring A 65, one end of the reset spring A 65 is fixedly connected with a sliding ring 66, the inner wall of the limiting cylinder 64 is provided with a sealing ring 68, the outer wall of the connecting sleeve 62 is slidably connected with a push ring 63, the inner wall of the push ring 63 is fixedly connected with a movable block, one end of the movable block is fixedly connected with a reset spring B 67, the inner wall of the connecting sleeve 62 is provided with a limiting groove 69, and the limiting groove 69 is movably connected with a limiting valve ball 610.

[0037] The D-shaped plugging structure for shield tunnel is provided with a sealing connection mechanism 6, through which the position of the injection molding pipe can be ensured to be accurate and fixed firmly, and displacement or loosening will not occur during grouting, so as to ensure the uniformity and compactness of grouting, improve the grouting quality, ensure the plugging effect, and meanwhile the sealing connection mechanism 6 with threaded connection has the characteristics of being reusable, and when later maintenance or re-grouting is needed, it can be conveniently disassembled and reinstalled, thereby reducing the maintenance cost.

[0038] Meanwhile, the contents not described in detail in the specification all belong to the prior art known by those skilled in the art, and the model parameters of various electric appliances are not specifically limited, and conventional equipment can be used.

[0039] When the structure needs to be installed as a whole, first, a small hole is opened in the cleaned tunnel wall by a drilling tool, then the D-shaped sealing plate 3 is placed against the tunnel wall, then the sealing plate 81 is placed in the installation groove, then the fixing assembly 84 is inserted into the hole, the depth of the one end of the movable soft plate 844 inserted into the small hole can be adjusted by rotating the adjusting nut 843, then the threaded hinge hole B82 of the sealing plate 81 is placed on the outer wall of the insertion ring 841, then the bolt 83 is inserted into the threaded hinge hole B82, and gradually rotated into the threaded groove 845 by means of a tool, when the bolt 83 reaches a certain degree, it will gradually extrude the movable soft plate 844, causing the movable soft plate 844 to gradually adhere to the inner wall of the small hole, when the nut end of the bolt 83 is completely inserted into the threaded hinge hole B82, the sealing plate 81 and the fixing assembly 84 can be fixedly installed on the tunnel wall, when multiple installation mechanisms 8 are arranged on the inner wall of the tunnel, the D-shaped sealing plate 3 can be fixedly installed on the tunnel wall with the structure as a whole, after installation, the sealing connection mechanism 6 can be connected and installed by rotating the threaded sleeve 5, then the movable block is moved and the return spring B67 is extruded by pushing the push ring 63, when the push ring 63 gradually moves out of the range of the limiting groove 69, the limiting valve ball 610 is in a movable state, at this time, the one end of the sliding ring 66 connected by the return spring A65 is moved, at this time, the injection pipe can be inserted, when one end of the new injection pipe is inserted into the inside of the sealing connection mechanism 6, the sliding ring 66 and the return spring A65 are extruded as the one end of the injection pipe gradually enters the sealing connection mechanism 6, when it reaches a certain degree and adheres to the sealing ring 68, the push ring 63 is loosened, the push ring 63 is reset to cover the limiting groove 69 by moving the return spring B67, at the same time, the limiting valve ball 610 is extruded to move to the inside and is clamped in the clamping groove opened on the outer wall of the injection pipe, thereby the connection and installation of the injection pipe can be completed, after installation, the injection material can be transported into the injection slot 7 by means of the injection pipe, when the injection reaches a certain degree, the excessive injection material can flow to the gap existing in the tunnel wall through the injection port 4 to fill it.

[0040] It should be noted that, in the present document, the terms such as first and second, etc. are merely used 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. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0041] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A D-type closure structure for a shield tunnel, comprising a D-type reinforcement plate (1), characterized in that, Also include: The mounting mechanism (8) is arranged on the outer wall of the D-shaped reinforcing plate (1), which is used for the installation of the structure as a whole; The sealing connection mechanism (6) is arranged on the inner side of the D-shaped reinforcing plate (1), which is used for sealing connection of the injection molding pipe; The mounting mechanism (8) includes a sealing plate (81) arranged on the outer wall of the D-shaped reinforcing plate (1), a threaded hinge hole B (82) is formed on the outer wall of the sealing plate (81), a bolt (83) is threadedly connected to the inner wall of the sealing plate (81), and a fixing assembly (84) is arranged at the bottom end of the sealing plate (81).

2. The D-shaped plugging structure for a shield tunnel according to claim 1, characterized in that: The fixing assembly (84) includes an insertion ring (841) arranged on the outer wall of the D-shaped reinforcing plate (1), one end of the insertion ring (841) is fixedly connected with a fixed screw rod (842), the outer wall of the fixed screw rod (842) is threadedly connected with an adjusting nut (843), the other end of the fixed screw rod (842) is fixedly connected with a movable soft plate (844), and a threaded groove (845) is formed on the outer wall of the fixed screw rod (842).

3. The D-shaped plugging structure for a shield tunnel according to claim 1, characterized in that: The sealing connection mechanism (6) includes a threaded pipe (61) arranged on the inner side of the D-shaped reinforcing plate (1), one end of the threaded pipe (61) is fixedly connected with a connecting sleeve (62), the inner wall of the threaded pipe (61) is fixedly connected with a limiting cylinder (64), the outer wall of the limiting cylinder (64) is sleeved with a reset spring A (65), one end of the reset spring A (65) is fixedly connected with a sliding ring (66), the inner wall of the limiting cylinder (64) is provided with a sealing ring (68), the outer wall of the connecting sleeve (62) is slidably connected with a pushing ring (63), the inner wall of the pushing ring (63) is fixedly connected with a movable block, one end of the movable block is fixedly connected with a reset spring B (67), the inner wall of the connecting sleeve (62) is provided with a limiting groove (69), and the limiting groove (69) is movably connected with a limiting valve ball (610).

4. The D-shaped plugging structure for a shield tunnel according to claim 1, characterized in that: The outer wall of the D-shaped reinforcing plate (1) is welded with a welding plate (2), the outer wall of the D-shaped reinforcing plate (1) is fixedly installed with a D-shaped plugging plate (3) for adhering to the inner wall of the tunnel, and the outer wall of the D-shaped reinforcing plate (1) is provided with an injection molding port (4) for the outflow of the injection molding material and filling the gap in the inner wall of the tunnel adhered to the D-shaped reinforcing plate (1).

5. The D-shaped plugging structure for a shield tunnel according to claim 1, characterized in that: The inner wall of the D-shaped reinforcing plate (1) is fixedly installed with a threaded sleeve (5) for threadedly connecting the sealing connection mechanism (6).

6. The D-shaped plugging structure for a shield tunnel according to claim 1, characterized in that: The outer wall of the D-shaped reinforcing plate (1) is provided with an injection molding groove (7) for filling sealing material, the inner wall of the injection molding groove (7) is provided with a mounting groove, and the D-shaped reinforcing plate (1) is connected with the mounting mechanism (8) through the mounting groove.

Images