Modularized embedded airbag hole reinforcing steel jacket device

Abstract

The utility model relates to a modularized embedded air bag hole reinforcing steel jacket device which comprises basic modules and expansion modules, a plurality of the basic modules can be assembled into a ring, or the basic modules and the expansion modules are jointly assembled into a ring. Air bags capable of being controlled to be inflated are embedded between the middle partition plates and the end plates of the basic module and the expansion module. The utility model has the advantages that: 1) the modular structure is simple and easy to assemble, various hole reinforcing steel jackets with different diameters can be flexibly formed, and the steel jackets can be repeatedly used; 2) the assembling space is small, the small construction space is adapted, and the construction is convenient and flexible; (3) multiple sealing and emergency protection functions are achieved, the remarkable water gushing and sediment gushing prevention capacity is achieved, and meanwhile water gushing and sediment gushing accident expansion or secondary accidents can be effectively eliminated; and (4) for the working conditions such as reinforced hole scrapping caused by no working well reinforced hole or wrong reinforced hole or diameter change of the shield tunneling machine, an applicable reinforced hole can be directly formed.

Description

Technical Field

[0001] The utility model relates to the technical field of shield construction, in particular to a modularized airbag embedded hole reinforcement steel sleeve device. Background Art

[0002] When using a small-diameter shield to construct an underground tunnel, the construction space is often very narrow, and the working pit is usually also very narrow. At the same time, the construction space is often located in complex urban areas, such as under an overpass. With a narrow construction space and a cramped working pit, a complete reinforced hole cannot be set up due to insufficient construction space.

[0003] When there is no reinforced opening in the working shaft or the existing reinforced opening is not applicable due to design changes, a steel sleeve and rubber sheet are used to reinforce the opening to achieve sealing between the shaft walls when a small-diameter shield machine enters and exits the hole. However, sealing failure often occurs during the construction process of forming the opening, which can easily cause water gushing, mud gushing or ground collapse accidents. Summary of the invention

[0004] The purpose of the utility model is to provide a modular embedded airbag tunnel reinforcement steel sleeve device in accordance with the above-mentioned deficiencies of the prior art. The airbag is filled by injecting air to achieve sealing between the shield body of the shield machine and the shaft wall and the tunnel opening during the tunnel opening formation process of the small-diameter shield machine. At the same time, a grouting port is arranged in the tunnel opening reinforcement steel sleeve, and a high-viscoplastic soil conditioner slurry is used to perform emergency grouting in the gap between the shield body of the small-diameter shield machine and the tunnel opening, so as to achieve stability of the soil around the working shaft during the construction of the small-diameter shield machine entering and exiting the tunnel, and prevent water surge, mud surge or ground collapse.

[0005] The purpose of this utility model is achieved by the following technical solutions:

[0006] A modular embedded airbag hole reinforcement steel sleeve device comprises a basic module and an expansion module, wherein several of the basic modules can be assembled into a ring, or several of the basic modules and several of the expansion modules can be assembled into a ring; a controllably inflatable airbag is embedded between the middle partition plate and the end plate of the basic module and the expansion module.

[0007] A soft plastic sheet is arranged between the basic module and / or the extension module and the wall of the working well.

[0008] The basic module is provided with a steel support interface, the basic module is connected to the steel support through the steel support interface, and is further fixedly connected to the well wall of the working well through the steel support.

[0009] The basic module and / or the expansion module is provided with an emergency grouting port, and the basic module and / or the expansion module is connected to an external grouting device through the emergency grouting port.

[0010] The airbag is externally connected to an inflation device.

[0011] The airbag is made of wear-resistant rubber or a rubber airbag.

[0012] Sealing films are provided at the middle partitions of the basic module and the expansion module.

[0013] The advantages of the utility model are:

[0014] 1) Modular structure, easy to assemble, can flexibly form a variety of hole reinforcement steel sleeves with different diameters, and can be reused;

[0015] 2) The assembly space required is small, suitable for small construction space, and the construction is convenient and flexible;

[0016] 3) It has multiple sealing and emergency protection functions, and has significant ability to prevent water surge and sediment surge, and can also effectively eliminate the expansion of water surge and sediment surge accidents or the formation of secondary accidents;

[0017] 4) For working conditions where there is no reinforced opening for the working shaft or the reinforced opening is wrong or the reinforced opening is scrapped due to the change of shield machine diameter, a suitable reinforced opening can be directly formed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the hole reinforcement steel sleeve structure composed of basic modules in the utility model;

[0019] Figure 2 This is a schematic diagram of the hole reinforcement steel sleeve structure composed of a basic module and an expansion module in the utility model;

[0020] Figure 3 This is a schematic diagram of the arrangement structure of the utility model when it is applied to the shield machine exit construction;

[0021] Figure 4 This is a schematic diagram of the arrangement structure of the utility model when applied to shield machine tunneling construction;

[0022] Figure 5 This is a schematic diagram of the installation of the hole reinforcement steel sleeve of the utility model. DETAILED DESCRIPTION

[0023] The following is a further detailed description of the features of the present invention and other related features through embodiments in conjunction with the accompanying drawings to facilitate understanding by technicians in the same industry:

[0024] like Figure 1-5As shown, the marks 1-17 in the figure respectively represent: basic module 1, expansion module 2, steel support structure 3, soft rubber film 4, emergency grouting port 5, sealing rubber film 6, air bag 7, grouting solenoid valve 8, grouting pipeline 9, grouting system 10, air solenoid valve 11, gas pipeline 12, air compressor 13, steel support 14, bolt 15, outer wall of shield machine 16, and working shaft wall 17.

[0025] Example: Figures 1 to 5 As shown, the modular airbag-embedded tunnel entrance reinforcement steel sleeve device in this embodiment is a modular airbag-embedded tunnel entrance reinforcement steel sleeve device for implementing small-diameter shield machines to directly enter and exit the tunnel, which has a beneficial effect on the construction.

[0026] Specifically, if Figure 1 and Figure 2 As shown, the reinforced steel sleeve device consists of a basic module 1 and an expansion module 2. Figure 1 The four basic modules 1 shown in the figure form a steel sleeve for reinforcing a hole of a certain diameter, or as Figure 2 As shown, by setting an extension module 2 between adjacent basic modules (a total of four extension modules 2 are set between four basic modules 1), the diameter of the hole can be changed to adapt to different small-diameter shields.

[0027] Combination Figures 3 to 5 As shown, the basic modules 1 or the basic module 1 and the expansion module 2 are connected and fastened by bolts 15. The basic module 1 is provided with a steel support interface 3, which is firmly connected to the working shaft wall 17 through the steel support 14, so that the hole reinforcement steel sleeve is firmly attached to the working shaft wall 17.

[0028] In this embodiment, a soft plastic sheet 4 is used on the bonding side of the basic module 1 , the expansion module 2 and the working shaft wall 17 to eliminate the gap between the reinforced steel sleeve and the working shaft wall 17 , and the soft plastic sheet 4 is bonded to the basic module 1 and the expansion module 2 .

[0029] An emergency grouting port 5 is provided on the basic module 1 and the expansion module 2 for emergency grouting. A sealing film 6 is provided at the middle partition of the basic module 1 and the expansion module 2 for the first sealing of the opening. An airbag 7 made of wear-resistant rubber or plastic material is embedded between the middle partition and the end plate of the basic module 1 and the expansion module 2 for the second sealing of the opening. The emergency grouting port 5 is connected to the grouting system 10 through the grouting solenoid valve 8 and the grouting pipeline 9, and the embedded airbag 6 is connected to the air compressor 13 through the gas pipeline 12 with the air solenoid valve 11.

[0030] During construction, this embodiment includes the following construction steps:

[0031] 1) Clean the working shaft wall 17 where the hole reinforcement steel sleeve is to be installed, and remove the protruding concrete blocks or steel bars and other debris at the installation position of the steel sleeve.

[0032] 2) According to the diameter of the small-diameter shield, confirm whether expansion module 2 is needed or the specifications of expansion module 2 should be added. A complete hole reinforcement steel sleeve is composed of basic module 1 or basic module 1 plus expansion module 2.

[0033] 3) According to the tunnel design requirements, determine the location of the tunnel entrance reinforcement steel sleeve, and use hoisting to lift the assembled tunnel entrance reinforcement steel sleeve to the tunnel entrance location.

[0034] 4) Measure the position of the steel sleeve for portal reinforcement to ensure that it is consistent with the relevant data of the tunnel design.

[0035] 5) The steel support 14 is connected to the steel support interface 3 of the basic module 1, and the steel support 14 is firmly connected to the working shaft wall 17. By fine-tuning the length of the steel support 14, the hole reinforcement steel sleeve is firmly fitted and fixed to the working shaft wall 17.

[0036] 6) Implement small-diameter shield machine entry and exit operations.

[0037] like Figure 3 As shown, when the shield machine is exiting the tunnel for construction, after the cutter head begins to cut into the working shaft wall 17, the built-in airbag 7 is fully inflated to a suitable working pressure, so that the airbag 7 fits tightly against the shield body of the shield machine to form a reliable seal.

[0038] like Figure 4 As shown, when the shield machine enters the tunnel for construction, after the cutterhead passes through the sealing film of the partition in the reinforced steel sleeve of the tunnel entrance for a certain distance, the built-in airbag 7 is fully inflated to a suitable working pressure, so that the airbag 7 fits tightly with the shield body of the shield machine to form a reliable seal.

[0039] When an emergency occurs, emergency grouting operations can be carried out through the emergency grouting port 5 to eliminate the emergency state and secondary accidents.

[0040] Although the above embodiments have described the concepts and embodiments of the purpose of the utility model in detail with reference to the accompanying drawings, ordinary technicians in this field can recognize that various improvements and modifications can still be made to the utility model without departing from the scope of the claims, so they are not described one by one here.

Claims

1. A modular steel sleeve device with an embedded airbag hole reinforcement, characterized in that: It comprises a basic module and an expansion module, wherein several of the basic modules can be assembled into a ring, or several of the basic modules and several of the expansion modules can be assembled into a ring; a controllably inflatable airbag is embedded between the middle partition and the end plate of the basic module and the expansion module.

2. A modular steel sleeve device with embedded airbag for strengthening the hole according to claim 1, characterized in that: A soft plastic sheet is arranged between the basic module and / or the extension module and the wall of the working well.

3. A modular steel sleeve device with embedded airbag for strengthening the hole according to claim 1, characterized in that: The basic module is provided with a steel support interface, the basic module is connected to the steel support through the steel support interface, and is further fixedly connected to the well wall of the working well through the steel support.

4. A modular steel sleeve device with embedded airbag for strengthening the hole according to claim 1, characterized in that: The basic module and / or the expansion module is provided with an emergency grouting port, and the basic module and / or the expansion module is connected to an external grouting device through the emergency grouting port.

5. The modular steel sleeve device with embedded airbag for strengthening the hole according to claim 1, characterized in that: The airbag is externally connected to an inflation device.

6. A modular steel sleeve device with embedded airbag for strengthening the hole according to claim 1 or 5, characterized in that: The airbag is made of wear-resistant rubber or a rubber airbag.

7. The modular steel sleeve device with embedded airbag for strengthening the hole according to claim 1, characterized in that: Sealing films are provided at the middle partitions of the basic module and the expansion module.

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