Confined water stratum shield tunneling machine receiving and sealing device and shield tunneling machine

Abstract

The utility model belongs to the technical field of shield construction, and discloses a confined water stratum shield tunneling machine receiving and sealing device and a shield tunneling machine. The sealing device comprises an expansion unit, a monitoring unit and a control unit. Wherein the expansion unit comprises an air compressor and a plurality of expansion parts which are distributed at intervals in the axial direction, each expansion part communicates with the air compressor, and each expansion part is connected to the air compressor through a multi-way valve; the monitoring unit comprises a plurality of humidity monitors which are distributed at intervals in the circumferential direction, and each humidity monitor is arranged in a gap between every two adjacent pipe pieces so as to accurately monitor the sealing condition. The control unit is connected between the multi-way valve and the multiple humidity monitors and can control opening and closing of the multi-way valve according to numerical values monitored by the humidity monitors, then gaps between the shield tunneling machine and the ground wall and gaps between the duct pieces and the ground wall are accurately blocked, the sealing effect is ensured, water and sand bursting is avoided, and smooth proceeding of subsequent construction is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of shield construction, in particular to a receiving sealing device for a shield machine in a pressurized water stratum and a shield machine. Background Art

[0002] With the continuous development of urban underground space, shield construction has been widely used in underground tunnel construction. Shield construction often passes through pressurized water formations. When constructing in such formations, there will be problems such as water leakage from the segments and floating of the shield machine. Therefore, it is necessary to seal the segments and the formation.

[0003] The shield sealing device disclosed in the prior art uses a sealing curtain and a pressure plate as a sealing device. However, as the pressure of the surrounding strata continues to change, the curtain and the pressure plate cannot respond in time, and thus the sealing effect cannot be ensured, which makes it easy for water and sand to gush out. Utility Model Content

[0004] The utility model aims to provide a shield machine receiving sealing device for pressurized water stratum and a shield machine. The sealing device can monitor the surrounding strata in real time and respond in time to ensure the sealing effect.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] On the one hand, a receiving sealing device for a shield machine in a pressurized water formation is provided, which is used to seal the gap between the ground wall and the shield machine and between the ground wall and the pipe segment, comprising:

[0007] An expansion unit, comprising an air compressor and a plurality of expansion members spaced apart along the circumferential direction, wherein the expansion members seal the gaps between the ground wall and the shield machine and between the ground wall and the pipe segment, each of the expansion members is connected to the air compressor, and a multi-way valve is provided between the air compressor and the plurality of expansion members;

[0008] A monitoring unit, comprising a plurality of humidity monitors spaced apart along the circumferential direction, each of the humidity monitors being arranged at a gap between two adjacent segments;

[0009] The control unit is connected between the multi-way valve and a plurality of humidity monitors, and can control the opening and closing of the multi-way valve according to the values ​​monitored by the humidity monitors.

[0010] As an optional solution for receiving the sealing device of the shield machine in pressurized water strata, a plurality of the expansion members are arranged alternately with a plurality of the pipe segments, and each of the expansion members corresponds to the gap between two adjacent pipe segments.

[0011] As an optional solution for receiving the sealing device of the shield machine in pressurized water strata, a plurality of expansion members are provided along the traveling direction of the shield machine.

[0012] As an optional solution for the receiving sealing device of the shield machine in pressurized water strata, the expansion unit also includes a limit assembly, which includes a limit member and a stop member. The limit member extends along the traveling direction of the shield machine, one end of the limit member is fixed to the ground wall, and the other end is connected to the stop member. The stop member extends along the radial direction of the shield machine, and the expansion member is pressed against the stop member.

[0013] As an optional solution for receiving the sealing device of the shield machine in pressurized water strata, the limiting assembly further includes a reinforcing rod, and the reinforcing rod is connected between the limiting member and the ground wall.

[0014] As an optional solution for receiving the sealing device of the shield machine in pressurized water strata, an air pressure monitor is provided between each of the expansion members and the multi-way valve, and each of the air pressure monitors is connected to the control unit.

[0015] As an optional solution for receiving the sealing device of the shield machine in pressurized water strata, the expansion piece is made of rubber material.

[0016] As an optional solution for receiving the sealing device of the shield machine in pressurized water strata, the outer side of the expansion member is coated with an anti-corrosion layer.

[0017] As an optional solution for receiving the sealing device of the shield machine in pressurized water strata, the monitoring unit further comprises an alarm, which is connected to the humidity monitor.

[0018] On the other hand, a shield machine is provided, comprising the above-mentioned receiving sealing device for a shield machine in a pressurized water stratum.

[0019] Beneficial effects of the utility model:

[0020] The utility model provides a receiving sealing device for a shield machine in a pressurized water stratum and a shield machine. The sealing device is used to seal the gap between the ground wall and the shield machine and between the ground wall and the pipe segment, and includes an expansion unit, a monitoring unit and a control unit. Among them, the expansion unit includes an air compressor and a plurality of expansion parts distributed along the axial interval, each expansion part is connected to the air compressor, and each expansion part is connected to the air compressor through a multi-way valve; the monitoring unit includes a plurality of humidity monitors distributed along the circumferential interval, and each humidity monitor is arranged at the gap between two adjacent pipe segments to accurately monitor the sealing condition. The control unit is connected between the multi-way valve and the plurality of humidity monitors, and can control the opening and closing of the multi-way valve according to the values ​​monitored by the humidity monitor, thereby accurately blocking the gap between the shield machine and the ground wall and between the pipe segment and the ground wall, ensuring the sealing effect, avoiding water and sand gushing, and ensuring the smooth progress of subsequent construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1This is a schematic diagram of the construction process of the receiving sealing device of the pressurized water stratum shield machine provided by the specific implementation method of the utility model. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the construction process of the receiving sealing device of the pressurized water stratum shield machine provided by the specific implementation method of the utility model. Figure 2 ;

[0023] Figure 3 It is a schematic diagram of the installation position of the humidity monitor of the receiving sealing device of the shield machine in the pressurized water stratum provided by the specific implementation mode of the utility model.

[0024] In the figure:

[0025] 100, ground wall; 200, shield machine; 300, segment;

[0026] 1. Expansion unit; 11. Air compressor; 12. Expansion piece; 13. Multi-way valve; 14. Limiting assembly; 141. Limiting piece; 142. Stopper; 143. Reinforcement rod; 15. Air pressure monitor;

[0027] 2. Monitoring unit;

[0028] 3. Control unit. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0030] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0033] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0034] like Figures 1 to 3 As shown, this embodiment provides a receiving sealing device for a shield machine in a pressurized water stratum. The sealing device is used to seal the gap between the ground wall 100 and the shield machine 200 and the ground wall 100 and the pipe segment 300, and includes an expansion unit 1, a monitoring unit 2 and a control unit 3. Among them, the expansion unit 1 includes an air compressor 11 and a plurality of expansion members 12 distributed along the axial interval, each expansion member 12 is connected to the air compressor 11, and each expansion member 12 is connected to the air compressor 11 through a multi-way valve 13; the monitoring unit 2 includes a plurality of humidity monitors distributed along the circumferential interval, each humidity monitor is arranged at the gap between two adjacent pipe segments 300 to accurately monitor the sealing condition. The control unit 3 is connected between the multi-way valve 13 and the plurality of humidity monitors, and can control the opening and closing of the multi-way valve 13 according to the values ​​monitored by the humidity monitor, thereby accurately blocking the gap between the shield machine 200 and the ground wall 100 and the pipe segment 300 and the ground wall 100, ensuring the sealing effect, avoiding water and sand gushing, and ensuring the smooth progress of subsequent construction.

[0035] Specifically, the air compressor 11 and the humidity monitor are both existing devices in the art. Their specific structures and principles refer to the existing technology, and this embodiment does not make any specific limitations on this.

[0036] Exemplarily, the control unit 3 is a STM32 controller commonly used in the art.

[0037] Alternatively, if Figure 3As shown, a plurality of expansion members 12 and a plurality of segments 300 are alternately arranged, and each expansion member 12 corresponds to the gap between two adjacent segments 300, so as to achieve full coverage of the segments 300 and the shield machine 200 in the circumferential direction to ensure a sealing effect.

[0038] For example, in this embodiment, six pipe segments 300 and six expansion members 12 are arranged along the circumferential direction; in other embodiments, the number of expansion members 12 can be set as needed.

[0039] Optionally, refer to Figure 1 and Figure 2 A plurality of expansion members 12 are arranged along the traveling direction of the shield machine 200 to achieve multi-layer sealing of the shield machine 200 and the pipe segment 300 and provide sealing performance.

[0040] Specifically, in the present embodiment, three expansion members 12 are arranged along the traveling direction of the shield machine 200 ; in other embodiments, the number of expansion members 12 can be set as required.

[0041] Optionally, refer to Figure 1 The expansion unit 1 also includes a limiting component 14, which includes a limiting member 141 and a stop member 142. The limiting member 141 extends along the traveling direction of the shield machine 200. One end of the limiting member 141 is fixed on the ground wall 100, and the other end is connected to the stop member 142. The stop member 142 extends along the radial direction of the shield machine 200. The expansion member 12 is pressed against the stop member 142 to limit the expansion member 12 along the traveling direction of the shield machine 200 to ensure the effectiveness of the expansion member 12 in blocking.

[0042] Further, continue to refer to Figure 1 The limiting assembly 14 further includes a reinforcing rod 143 , which is connected between the limiting member 141 and the ground wall 100 to improve the stability of the limiting member 141 and the stopper 142 .

[0043] Specifically, the limiting member 141 , the stopper 142 and the reinforcing rod 143 are all made of steel, which is easy to obtain, convenient to manufacture and low in cost.

[0044] Optionally, refer to Figure 1 and Figure 2 A pressure monitor 15 is provided between each expansion member 12 and the multi-way valve 13, and each pressure monitor 15 is connected to the control unit 3. The above arrangement monitors the pressure of the expansion member 12 through the pressure monitor 15 to ensure the effectiveness of the plugging.

[0045] Specifically, the air pressure monitors 15 are all existing devices in the art, and their specific structures and principles refer to the existing technology, which are not specifically limited in this embodiment.

[0046] Optionally, the expansion member 12 is made of a rubber material and has good elasticity, wear resistance and aging resistance.

[0047] Optionally, the outer side of the expansion member 12 is coated with an anti-corrosion layer to prevent the expansion member 12 from being damaged due to corrosion and to extend the service life.

[0048] Exemplarily, the anti-corrosion layer is made by coating with anti-corrosion coatings such as epoxy anti-corrosion coatings or polyurethane anti-corrosion coatings.

[0049] Optionally, the monitoring unit 2 further includes an alarm, which is connected to the humidity monitor. When the value monitored by any humidity monitor exceeds a set upper limit, the alarm will send out an alarm signal to alert the operator. Specifically, the alarm signal can be a warning sound, as long as it can serve to alert the operator, and is not specifically limited here.

[0050] On the other hand, this embodiment also provides a shield machine 200, including the above-mentioned receiving sealing device for a shield machine in a pressurized water stratum, which has all the beneficial effects of the above-mentioned receiving sealing device for a shield machine in a pressurized water stratum, and will not be repeated here.

[0051] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A receiving sealing device for a shield machine in a pressurized water stratum, used for sealing the gap between a ground wall (100) and a shield machine (200) and between a ground wall (100) and a pipe segment (300), characterized in that: include: An expansion unit (1) comprises an air compressor (11) and a plurality of expansion members (12) spaced apart along a circumferential direction, wherein the expansion members (12) block gaps between the ground wall (100) and the shield machine (200) and between the ground wall (100) and the pipe segment (300), each of the expansion members (12) is connected to the air compressor (11), and a multi-way valve (13) is provided between the air compressor (11) and the plurality of expansion members (12); A monitoring unit (2) comprising a plurality of humidity monitors spaced apart along a circumferential direction, each humidity monitor being arranged at a gap between two adjacent segments (300); The control unit (3) is connected between the multi-way valve (13) and a plurality of humidity monitors, and can control the opening and closing of the multi-way valve (13) according to the values ​​monitored by the humidity monitors.

2. The receiving sealing device of a shield machine for pressurized water strata according to claim 1, characterized in that: The plurality of expansion members (12) and the plurality of pipe segments (300) are arranged alternately, and each expansion member (12) corresponds to the gap between two adjacent pipe segments (300).

3. The receiving sealing device of a shield machine for pressurized water strata according to claim 1, characterized in that: A plurality of expansion members (12) are arranged along the travel direction of the shield machine (200).

4. The receiving sealing device for a shield machine in a pressurized water stratum according to claim 1, characterized in that: The expansion unit (1) further comprises a limit assembly (14), the limit assembly (14) comprising a limit piece (141) and a stop piece (142), the limit piece (141) extending along the travel direction of the shield machine (200), one end of the limit piece (141) being fixed on the ground wall (100), and the other end being connected to the stop piece (142), the stop piece (142) extending along the radial direction of the shield machine (200), and the expansion piece (12) being pressed against the stop piece (142).

5. The receiving sealing device for a shield machine in a pressurized water stratum according to claim 4, characterized in that: The limiting assembly (14) further comprises a reinforcing rod (143), wherein the reinforcing rod (143) is connected between the limiting member (141) and the ground wall (100).

6. The receiving sealing device of a shield machine in a pressurized water formation according to any one of claims 1 to 5, characterized in that: An air pressure monitor (15) is provided between each expansion member (12) and the multi-way valve (13), and each air pressure monitor (15) is connected to the control unit (3).

7. The receiving sealing device of a shield machine in a pressurized water formation according to any one of claims 1 to 5, characterized in that: The expansion member (12) is made of rubber material.

8. The receiving sealing device of a shield machine in a pressurized water formation according to any one of claims 1 to 5, characterized in that: The outer side of the expansion piece (12) is coated with an anti-corrosion layer.

9. The receiving sealing device of a shield machine in a pressurized water formation according to any one of claims 1 to 5, characterized in that: The monitoring unit (2) also includes an alarm, which is connected to the humidity monitor.

10. A shield machine, characterized in that: It comprises a receiving sealing device for a shield machine in a pressurized water stratum as described in any one of claims 1-9.

Images