Water stop device for soft soil shield receiving

Abstract

The utility model relates to the technical field of shield equipment, in particular to a water stopping device for soft soil shield receiving. The water stopping device for soft soil shield receiving comprises a first sealing assembly, a second sealing assembly and an adjusting assembly. The first sealing assembly is arranged on the peripheral side of the shield tunneling machine in a sleeving mode and connected with the peripheral side of the shield tunneling machine in a sealed mode. One end of the second sealing assembly is connected with the first sealing assembly, and the other end is hermetically connected with the ground wall. One end of the adjusting assembly is connected with the first sealing assembly, the other end of the adjusting assembly is connected with the ground wall, and the adjusting assembly can drive the first sealing assembly to move towards the ground wall so that the second sealing assembly can press the ground wall. According to the water stopping device for soft soil shield receiving, the problem of water leakage in the shield launching process under soft soil is solved, and the safety and operation efficiency of engineering construction are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shield equipment, in particular to a water-stopping device for receiving a soft soil shield. Background Art

[0002] At present, the development of tunnels has gradually introduced shield construction, which is a new type of dark excavation construction method and has become an important part of the transportation development of major cities at home and abroad. It has the advantages of large transportation capacity, high speed, low noise, light pollution, good ecological environment, economic and social benefits, and is becoming more and more popular.

[0003] The receiving process of soft soil shield is usually divided into two stages: initial receiving (initial receiving) and final receiving. Initial receiving refers to the inspection before the shield enters the receiving site of the interval shield, including the preparation of the shield machine and the safety of the surrounding environment. Final receiving refers to the inspection after the exit from the tunnel to ensure that the shield machine has completely landed on the receiving base and the safety and stability of the tunnel are guaranteed.

[0004] In the process of launching and receiving soft soil shield, rubber curtain plates are usually used in the prior art to seal and stop water between the shield machine and the tunnel opening (tunnel door ring). This sealing method is not effective and easily leads to water leakage. It is difficult to achieve an ideal sealing effect in soft soil. At the same time, the sealing effect of the sealing method in the prior art is easily affected by the change of water pressure of the pressurized water, thereby increasing safety hazards and reducing work efficiency.

[0005] Therefore, it is urgent to design a water-stopping device for receiving soft soil shield to solve the above technical problems. Utility Model Content

[0006] The utility model aims to provide a water-stopping device for receiving a soft soil shield, which solves the water leakage problem during the shield starting process under soft soil geology and improves the safety and operation efficiency of engineering construction.

[0007] To achieve this purpose, the utility model adopts the following technical solutions:

[0008] The utility model provides a soft soil shield receiving water-stopping device, which is used to seal the gap between the shield machine and the tunnel door ring. The soft soil shield receiving water-stopping device comprises:

[0009] A first sealing component, wherein the first sealing component is sleeved on the outer peripheral side of the shield machine and is sealingly connected to the outer peripheral side of the shield machine;

[0010] A second sealing component, one end of which is connected to the first sealing component, and the other end of which is sealed to the floor wall;

[0011] An adjusting component, one end of which is connected to the first sealing component and the other end of which is connected to the ground wall. The adjusting component can drive the first sealing component to move toward the ground wall so that the second sealing component presses the ground wall.

[0012] As an optional technical solution for a water-stop device for receiving a soft soil shield, the first sealing assembly includes a plurality of first metal components and a plurality of locking parts. The plurality of first metal components are all mounted on the outer peripheral side of the shield machine, and the locking parts are arranged between two adjacent first metal components so that the locking parts lock the two adjacent first metal components.

[0013] As an optional technical solution for a water-stopping device for receiving a soft soil shield, the first sealing assembly also includes a first sealing ring, and the first sealing ring is arranged between the shield machine and the first metal component.

[0014] As an optional technical solution for a water-stopping device for receiving a soft soil shield, the first sealing assembly further includes a sealing gasket, and the sealing gasket is arranged between two adjacent first metal components.

[0015] As an optional technical solution for a water-stop device for receiving a soft soil shield, a protrusion is provided on the first metal component, the protrusion protrudes in a direction away from the shield machine, and the protrusion is configured to avoid a grouting channel on the shield machine.

[0016] As an optional technical solution for a water-stop device for receiving a soft soil shield, the first metal component and the locking piece are each provided in four pieces, and the four first metal components are symmetrically arranged about the axis of the shield machine, and the four locking pieces are symmetrically arranged about the axis of the shield machine.

[0017] As an optional technical solution for a water-stop device for receiving a soft soil shield, the second sealing assembly includes a second metal component and a second sealing ring. The second metal component is arranged in a ring shape. The second sealing ring is arranged between the ground wall and the second metal component. The second metal component presses the second sealing ring against the ground wall; the end of the second metal component away from the second sealing ring is connected to the first sealing assembly.

[0018] As an optional technical solution for a water-stopping device for receiving a soft soil shield, the adjustment component includes an electric hoist.

[0019] As an optional technical solution for a soft soil shield receiving water-stop device, the soft soil shield receiving water-stop device also includes a water pressure sensor and a controller, and the controller is electrically connected to the water pressure sensor and the adjusting component; the water pressure sensor is arranged at one side end of the ground wall close to the shield machine, and the water pressure sensor is configured to detect the water pressure of the pressurized water. The controller can control the adjusting component to drive the first sealing component to move toward the ground wall according to the water pressure signal detected by the water pressure sensor, so that the second sealing component presses the ground wall.

[0020] As an optional technical solution for a water-stopping device for receiving a soft soil shield, the water pressure sensor is provided in plurality, and the plurality of water pressure sensors are arranged at equal intervals.

[0021] The beneficial effects of the utility model include at least:

[0022] The utility model provides a water-stopping device for receiving a soft soil shield, which is used to seal the gap between a shield machine and a tunnel door ring, and comprises a first sealing component, a second sealing component and an adjusting component. Among them, the first sealing component is sleeved on the outer peripheral side of the shield machine and is sealed and connected to the outer peripheral side of the shield machine. One end of the second sealing component is connected to the first sealing component, and the other end is sealed and connected to the ground wall. One end of the adjusting component is connected to the first sealing component, and the other end is connected to the ground wall. The adjusting component can drive the first sealing component to move toward the ground wall so that the second sealing component presses the ground wall. Through the arrangement of the first sealing component and the second sealing component, when the shield machine is excavating in the initial receiving stage, the first sealing component and the second sealing component can well seal the shield machine and the tunnel opening, avoid leakage of pressurized water in the tunnel, and improve the sealing performance. By setting the adjustment component, when pressurized water suddenly penetrates into the soft soil layer in the tunnel, the adjustment component can adjust the distance between the first sealing component and the ground wall, thereby reducing the distance between the first sealing component and the ground wall, increasing the pressure of the second sealing component pressing the ground wall, and making the second sealing component close to the ground wall, so as to resist the pressure of the pressurized water, avoid the pressurized water flushing the second sealing component and causing the pressurized water to leak, improve the sealing performance, avoid the leakage problem during the shield starting process under soft soil geology, and improve the safety and operation efficiency of engineering construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0024] Figure 1 A schematic diagram of the assembly structure of a soft soil shield receiving water-stopping device and a shield machine provided in an embodiment of the utility model;

[0025] Figure 2 The water-stopping device for receiving a soft soil shield provided by the embodiment of the utility model is along the Figure 1 Cross-sectional view along the AA direction.

[0026] Reference numerals

[0027] 10. Shield machine; 11. Grouting channel; 20. Ground wall;

[0028] 100. First sealing assembly; 110. First metal component; 120. Locking piece; 130. First sealing ring; 140. Sealing gasket; 150. Protrusion; 200. Second sealing assembly; 210. Second metal component; 220. Second sealing ring; 300. Adjustment assembly; 400. Water pressure sensor; 500. Controller. DETAILED DESCRIPTION

[0029] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clearly, the technical solutions of the present invention are further explained below with reference to the accompanying drawings and through specific implementation methods.

[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", "left", "right" and other directions or positional relationships are based on the directions or positional relationships 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] In the description of this embodiment, unless otherwise specified, the term "plurality" refers to a quantity of two or more than two.

[0034] The receiving process of the shield machine refers to the process in which the shield machine excavates from the tunnel to the receiving working shaft and lands safely and accurately on the receiving base after the shield construction is completed. This process is an important part of the shield construction, involving the precise control and operation of the shield machine to ensure that the shield machine can successfully complete the excavation task and return safely.

[0035] During the receiving process, a series of operations and preparations need to be carried out, such as internal inspection of the shield machine, reinforcement of the soil at the tunnel entrance, accurate measurement of the coordinate position and posture of the shield machine, etc. At the same time, it is also necessary to gradually reduce the earth pressure (mud and water pressure) setting value and timely block the gap between the outer periphery of the segment at the tunnel entrance and the shield excavation hole to ensure the safety of the shield machine and the stability of the tunnel.

[0036] The receiving process is usually divided into two stages: initial receiving and final receiving. Initial receiving refers to the inspection before the shield machine enters the receiving site of the interval shield machine, including the preparation of the shield machine and the safety of the surrounding environment. Final receiving refers to the inspection after the tunnel exit is completed to ensure that the shield machine has completely landed on the receiving base and the safety and stability of the tunnel are guaranteed.

[0037] Sealing is always a very important link, whether in the initial acceptance stage or the final acceptance stage. Sealing measures can prevent soil, rock, water, mud and other substances from entering the shield machine or the tunnel, thereby ensuring the normal operation of the shield machine and the safety and stability of the tunnel. At the same time, sealing can also control the water pressure and groundwater level in the tunnel, prevent groundwater influx and mud leakage, keep the working surface dry and the construction proceed smoothly.

[0038] This embodiment provides a water-stopping device for receiving a soft soil shield, which solves the water leakage problem during the shield starting process under soft soil geology, improves the sealing performance, and improves the safety and operation efficiency of engineering construction.

[0039] like Figure 1-Figure 2As shown, the soft soil shield receiving water-stopping device is used to seal the gap between the shield machine 10 and the tunnel door ring, and the soft soil shield receiving water-stopping device includes a first sealing component 100, a second sealing component 200 and an adjusting component 300. Among them, the first sealing component 100 is sleeved on the outer peripheral side of the shield machine 10 and is sealed and connected to the outer peripheral side of the shield machine 10. One end of the second sealing component 200 is connected to the first sealing component 100, and the other end is sealed and connected to the ground wall 20. One end of the adjusting component 300 is connected to the first sealing component 100, and the other end is connected to the ground wall 20. The adjusting component 300 can drive the first sealing component 100 to move toward the ground wall 20, so that the second sealing component 200 presses the ground wall 20.

[0040] Based on the above design, Figure 2 The direction of the arrow in is the excavation direction of the shield machine 10. In this embodiment, by setting the first sealing component 100 and the second sealing component 200, when the shield machine 10 is excavating in the initial receiving stage, the first sealing component 100 and the second sealing component 200 can well seal the shield machine 10 and the tunnel opening, avoid leakage of pressurized water in the tunnel, and improve the sealing performance. By setting the adjustment component 300, when the phenomenon of pressurized water infiltration suddenly occurs in the soft soil layer in the tunnel, the adjustment component 300 can adjust the distance between the first sealing component 100 and the ground wall 20, thereby reducing the distance between the first sealing component 100 and the ground wall 20, increasing the pressure of the second sealing component 200 pressing the ground wall 20, and making the second sealing component 200 close to the ground wall 20, so as to resist the pressure of the pressurized water, avoid the phenomenon of pressurized water flushing the second sealing component 200 and causing pressurized water leakage, improve the sealing performance, avoid the leakage problem in the shield starting process under soft soil, and improve the safety and operation efficiency of engineering construction.

[0041] like Figure 1 As shown, in this embodiment, the first sealing assembly 100 includes a plurality of first metal components 110 and a plurality of locking members 120, and the plurality of first metal components 110 are all sleeved on the outer peripheral side of the shield machine 10, and the locking member 120 is arranged between two adjacent first metal components 110, so that the locking member 120 locks the two adjacent first metal components 110. By setting the locking member 120, the first metal component 110 can be fastened to the outer peripheral side of the shield machine 10, thereby improving the sealing performance and preventing the pressurized water from leaking to the outside. The setting of the first metal component 110 can extend the service life of the first sealing assembly 100 and improve the mechanical strength. Exemplarily, the first metal component 110 is made of stainless steel or copper alloy.

[0042] Exemplarily, in this embodiment, the number of the first metal component 110 and the number of the locking piece 120 are both four, and the four first metal components 110 are symmetrically arranged about the axis of the shield machine 10, and the four locking pieces 120 are symmetrically arranged about the axis of the shield machine 10. In other words, the four locking pieces 120 in this embodiment are arranged at equal intervals, which can improve the force uniformity of the first metal component 110, avoid or reduce the phenomenon of stress concentration, and extend the service life of the first sealing assembly 100. Of course, the operator can also set other numbers of the first metal components 110 and the locking pieces 120, as long as the number of the first metal components 110 and the locking pieces 120 is equal, and they will not be repeated here.

[0043] Furthermore, if Figure 1 As shown, the first sealing assembly 100 in this embodiment further includes a first sealing ring 130 and a sealing gasket 140. The first sealing ring 130 is arranged between the shield machine 10 and the first metal component 110, and the sealing gasket 140 is arranged between two adjacent first metal components 110. The arrangement of the sealing gasket 140 can improve the sealing performance between two adjacent first metal components 110, prevent pressurized water from contaminating the shield machine 10, and ensure that the working surface of the shield machine 10 is dry.

[0044] The sealing performance of the first sealing assembly 100 can be improved by setting the first sealing ring 130. Specifically, when the locking member 120 locks the two adjacent first metal components 110, the first sealing ring 130 is squeezed by the first metal component 110 and deformed, so that the first sealing ring 130 can be tightly attached to the outer peripheral side of the shield machine 10, thereby improving the sealing performance and avoiding the risk of pressurized water leakage. It can be understood that the locking force of the locking member 120 in this embodiment can be adjusted, that is, the operator can adjust the tightness of the locking member 120 so that the first metal component 110 and the first sealing ring 130 can adapt to shield machines 10 of different sizes and types, thereby improving flexibility and applicability.

[0045] like Figure 1 As shown, the first metal component 110 in this embodiment is provided with a protrusion 150, which protrudes in a direction away from the shield machine 10, and the protrusion 150 is configured to avoid the grouting flow channel 11 on the shield machine 10. Thus, under the premise of satisfying the sealing performance, the flexibility and applicability of the first metal component 110 are improved, and the cost is saved.

[0046] like Figure 1As shown, in this embodiment, the second sealing assembly 200 includes a second metal component 210 and a second sealing ring 220. The second metal component 210 is arranged in an annular shape. The second sealing ring 220 is arranged between the ground wall 20 and the second metal component 210. The second metal component 210 presses the second sealing ring 220 against the ground wall 20. One end of the second metal component 210 away from the second sealing ring 220 is welded to the first metal component 110 of the first sealing assembly 100.

[0047] Optionally, the first metal component 110 and the second metal component 210 in this embodiment can be made of stainless steel or copper alloy.

[0048] The adjustment assembly 300 in this embodiment includes an electric hoist. It should be noted that the electric hoist is a standard component commonly found on the market. In other words, the electric hoist includes a motor and a transmission rod connected to the motor. The motor can drive the transmission rod to move in a direction close to the ground wall 20, thereby enabling the first metal component 110 to drive the second metal component 210 to move in a direction close to the ground wall 20, so that the second metal component 210 presses the second sealing ring 220, thereby improving the sealing performance. Since the electric hoist is a standard component, its working principle and specific structure will not be described in detail in this embodiment.

[0049] Furthermore, if Figure 1 As shown, the water-stopping device for receiving a soft soil shield also includes a water pressure sensor 400 and a controller 500, and the controller 500 is electrically connected to the water pressure sensor 400 and the adjustment component 300; the water pressure sensor 400 is arranged on one side end of the ground wall 20 close to the shield machine 10, and the water pressure sensor 400 is configured to detect the water pressure of the pressurized water. The controller 500 can control the adjustment component 300 to drive the first sealing component 100 to move toward the ground wall 20 according to the water pressure signal detected by the water pressure sensor 400, so that the second sealing component 200 presses the ground wall 20.

[0050] It should be emphasized that the controller 500 in this embodiment is a conventional component in the field, for example, it can be a PLC controller, etc. Therefore, the specific structure and working principle of this embodiment will not be described in detail. The controller 500 can be set on the shield machine 10. When the pressurized water in the soft soil layer in the tunnel suddenly gushes out, the water pressure sensor 400 can transmit the water pressure signal of the detected pressurized water to the controller 500. The controller 500 controls the movement of the adjustment component 300 according to the water pressure signal, so that the second metal component 210 is tightened, and then the second sealing ring 220 can press the ground wall 20 to ensure that the two are tightly fitted, so as to resist the pressure of the pressurized water, avoid the pressurized water from flushing the second sealing component 200 and causing the pressurized water to leak, improve the sealing performance, avoid the leakage problem during the shield starting process under soft soil geology, and ensure the safety and operation efficiency of the engineering construction.

[0051] Optionally, the water pressure sensors 400 in this embodiment are multiple, and the multiple water pressure sensors 400 are arranged at equal intervals, so that the multiple water pressure sensors 400 can detect the outflow of pressurized water in different directions, thereby improving the sealing and reliability of the soft soil shield receiving water stop device.

[0052] Optionally, the model of the water pressure sensor 400 in this embodiment can be set to PT500 or GPD10, etc., which are commonly seen in the market.

[0053] Optionally, the first sealing ring 130 and the second sealing ring 220 in this embodiment may both be made of hard rubber or silicone.

[0054] Obviously, the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

[0055] Note that in the description of this specification, the reference terms "some embodiments", "other embodiments", etc., mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A water-stopping device for receiving a soft soil shield, used to seal the gap between a shield machine (10) and a tunnel door ring, characterized in that: The soft soil shield receiving water-stopping device comprises: A first sealing component (100), wherein the first sealing component (100) is sleeved on the outer peripheral side of the shield machine (10) and is sealingly connected to the outer peripheral side of the shield machine (10); A second sealing component (200), one end of the second sealing component (200) being connected to the first sealing component (100), and the other end of the second sealing component (200) being sealed to the floor wall (20); An adjusting component (300), one end of the adjusting component (300) being connected to the first sealing component (100), and the other end being connected to the floor wall (20), the adjusting component (300) being capable of driving the first sealing component (100) to move in the direction of the floor wall (20), so that the second sealing component (200) is pressed against the floor wall (20).

2. The water-stopping device for receiving a soft soil shield according to claim 1, characterized in that: The first sealing assembly (100) comprises a plurality of first metal components (110) and a plurality of locking components (120), wherein the plurality of first metal components (110) are sleeved on the outer peripheral side of the shield machine (10), and the locking component (120) is arranged between two adjacent first metal components (110) so that the locking component (120) locks the two adjacent first metal components (110).

3. The water-stopping device for receiving a soft soil shield according to claim 2, characterized in that: The first sealing assembly (100) further comprises a first sealing ring (130), wherein the first sealing ring (130) is arranged between the shield machine (10) and the first metal component (110).

4. The water-stopping device for receiving a soft soil shield according to claim 2, characterized in that: The first sealing assembly (100) further comprises a sealing gasket (140), wherein the sealing gasket (140) is arranged between two adjacent first metal components (110).

5. The water-stopping device for receiving a soft soil shield according to claim 2, characterized in that: The first metal component (110) is provided with a protrusion (150), the protrusion (150) protrudes in a direction away from the shield machine (10), and the protrusion (150) is configured to avoid a grouting flow channel (11) on the shield machine (10).

6. The water-stopping device for receiving a soft soil shield according to claim 2, characterized in that: The number of the first metal components (110) and the number of the locking components (120) are both four, and the four first metal components (110) are symmetrically arranged about the axis of the shield machine (10), and the four locking components (120) are symmetrically arranged about the axis of the shield machine (10).

7. The water-stopping device for receiving a soft soil shield according to claim 1, characterized in that: The second sealing assembly (200) comprises a second metal component (210) and a second sealing ring (220); the second metal component (210) is arranged in a ring shape; the second sealing ring (220) is arranged between the floor wall (20) and the second metal component (210); the second metal component (210) presses the second sealing ring (220) against the floor wall (20); and one end of the second metal component (210) away from the second sealing ring (220) is connected to the first sealing assembly (100).

8. The water-stopping device for receiving a soft soil shield according to claim 7, characterized in that: The adjustment assembly (300) includes an electric hoist.

9. The water-stopping device for receiving a soft soil shield according to claim 8, characterized in that: The soft soil shield receiving water-stopping device further comprises a water pressure sensor (400) and a controller (500), wherein the controller (500) is electrically connected to the water pressure sensor (400) and the adjusting component (300); the water pressure sensor (400) is arranged at one side end of the ground wall (20) close to the shield machine (10), and the water pressure sensor (400) is configured to detect the water pressure of pressurized water; the controller (500) can control the adjusting component (300) to drive the first sealing component (100) to move toward the ground wall (20) according to the water pressure signal detected by the water pressure sensor (400), so that the second sealing component (200) presses the ground wall (20).

10. The water-stopping device for receiving a soft soil shield according to claim 9, characterized in that: The water pressure sensor (400) is provided in plurality, and the plurality of water pressure sensors (400) are arranged at equal intervals.

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