Prefabricated tunnel portal for pipe jacking receiving water stop and prefabricating method of prefabricated tunnel portal

Abstract

The invention belongs to the field of water stop structures, and particularly relates to a prefabricated tunnel portal for pipe jacking receiving water stop and a prefabricating method of the prefabricated tunnel portal. The water stopping assembly is mounted on the tunnel portal steel ring; the casing pipe is installed on the tunnel portal steel ring, and part of the casing pipe extends out of the tunnel portal steel ring; and a plurality of suspension support assemblies. A portal steel ring, a water stop assembly, a sleeve and a suspension supporting assembly are prefabricated in a set mode, the sleeve is initially fixed through a bolt and connected with the portal steel ring, the bolt is taken out after the whole set of assembly is installed, and the suspension supporting assembly is used for avoiding the situation that due to the fact that the sleeve is completely pressed downwards, part of the water stop assembly located on the portal steel ring is disengaged; and the sleeve is suspended through the suspension supporting assembly, after the sleeve is pushed by the pipe jacking machine, the sleeve is separated from the suspension supporting assembly, operation of the pipe jacking machine cannot be affected, and the problem that the device is damaged due to the fact that the sleeve is completely pressed downwards is well solved.

Description

Technical Field

[0001] The invention belongs to the field of water-stopping structures, and in particular relates to a prefabricated tunnel door used for jacking pipe receiving water-stopping and a prefabrication method thereof. Background Art

[0002] Most of the traditional receiving shaft portal water-stopping methods are to set steel strands at the hinge pressure plate and close them into a ring. The hinge pressure plate is constrained by the radial constraint force of the annular steel strands, and then the water-stop rubber ring is pressed to achieve the purpose of water-stopping. Although this method has a certain water-stopping effect, the radial constraint that the steel strands can provide is limited. In high-water strata, the mud and water pressure around the tunnel can often break through the water-stop rubber ring and cause water and sand gushing. The use of steel strands for constraint is only suitable for circular pipe jacking machines. In addition, when the casing is installed into the steel ring of the tunnel portal, there is no supporting force, so the casing will give a certain pressure to the hinge pressure plate below, thereby creating a certain gap with the hinge pressure plate above, which is more likely to cause water and sand gushing. Summary of the invention

[0003] In order to overcome the deficiencies in the prior art, the present invention provides a prefabricated tunnel door and a prefabrication method for pipe jacking receiving water stopping, which effectively solves the problem that most of the traditional receiving well tunnel door water stoppings are to set steel strands at the hinge pressure plate and close them into a ring, and constrain the hinge pressure plate through the radial constraint force of the annular steel strands, and then press the water-stop rubber ring to achieve the purpose of water stopping. Although this method has a certain water-stopping effect, the radial constraint that the steel strands can provide is limited. In high water level strata, the mud and water pressure around the tunnel can often break through the water-stop rubber ring and then cause water and sand gushing. The use of steel strands for constraint is only applicable to circular pipe jacking machines, and when the general casing is installed into the tunnel door steel ring, due to the lack of supporting force, the casing will give a certain pressure to the hinge pressure plate below, thereby creating a certain gap with the hinge pressure plate above, which is more likely to cause water and sand gushing.

[0004] One embodiment of the present invention provides a prefabricated tunnel door for receiving water stop of a jacking pipe, comprising:

[0005] The steel ring of the tunnel door fixed to the receiving well opening;

[0006] A water stop assembly, the water stop assembly being mounted on the tunnel gate steel ring;

[0007] A sleeve, the sleeve being mounted on the tunnel gate steel ring, the sleeve partially extending out of the tunnel gate steel ring;

[0008] A plurality of suspension support assemblies, wherein the plurality of suspension support assemblies are installed on the portal steel ring in a circular array, and the suspension support assemblies are provided with movable ends, and the movable ends are installed on the casing;

[0009] Wherein, the sleeve includes a first state and a second state;

[0010] When the casing is in the first state, the casing is located in the tunnel gate steel ring. At this time, the water-stop assembly is turned inward toward the receiving well hole and abuts against the casing. When the casing is in the second state, the casing is located in the receiving well.

[0011] The present invention discloses a prefabricated tunnel door for receiving water stop for jacking pipes. The tunnel door steel ring, water stop assembly, sleeve and hanging support assembly are prefabricated as a set. The sleeve is initially connected to the tunnel door steel ring by bolts. The bolts are taken out after the whole set of assembly is installed. The hanging support assembly prevents the sleeve from being completely pressed down and causing the partial water stop assembly located on the upper part of the tunnel door steel ring to be disengaged after the bolts are taken out, thereby causing damage to the device. The sleeve is suspended by the hanging support assembly. After the jacking machine pushes the sleeve, the sleeve is separated from the hanging support assembly, which will not affect the operation of the jacking machine and well solves the problem that the sleeve is completely pressed down and causes the partial water stop assembly located on the upper part of the tunnel door steel ring to be disengaged, thereby causing damage to the device. After the steel ring and water-stop assembly are installed, the casing is lowered into the receiving well, and the casing is pushed into the cave entrance (i.e., inside the tunnel portal steel ring) by the installed pushing structure. At this time, the water-stop assembly is pushed open, and the water-stop assembly is placed on the casing with its face turned inward toward the cave entrance. After the pipe jacking machine advances to the receiving well cave entrance, it pushes the casing into the receiving well. At this time, the water-stop assembly placed on the casing is placed on the pipe jacking machine as the pipe jacking machine advances. The water-stop assembly is turned inward and forms a reliable constraint with the pipe jacking machine, thereby achieving the effect of water-stopping received by the pipe jacking machine. The casing, tunnel portal steel ring and water-stop assembly of the present invention can be prefabricated as a set, and the water-stop assembly will be in an inverted state after installation, so there is no need to jack in the casing, but it can also be installed after jacking in the casing, which is not the only limitation here.

[0012] In one embodiment, the suspension support assembly includes a first state and a second state;

[0013] When the suspension support assembly is in the first state, the pipe jacking machine does not push the casing, the movable end of the suspension support assembly is located in the casing, and the casing is suspended in the tunnel gate steel ring through the movable end;

[0014] When the suspension support assembly is in the first state, the pipe jacking machine pushes the casing, and the movable end of the suspension support assembly is detached from the casing.

[0015] In one embodiment, the sleeve is provided with hanging holes having the same number as the hanging support components, and the movable end of the hanging support component is clamped in the hanging hole when the sleeve is not pushed by the pipe jacking machine.

[0016] In one embodiment, the water-stop assembly includes a water-stop rubber ring, a pad, a hinge pressure plate and a fixing part. The water-stop rubber ring is located on one side of the tunnel gate steel ring, the pad is located on the side of the water-stop rubber ring away from the tunnel gate steel ring, and the hinge pressure plate is located on the side of the pad away from the water-stop rubber ring.

[0017] In one embodiment, the fixing member fixes the water-stop rubber ring, the gasket and the hinge pressure plate in sequence on one side of the tunnel door steel ring.

[0018] In one embodiment, a plurality of clamping plates are arranged on the sleeve in a circular array.

[0019] In one embodiment, a jack socket is provided on one side of the sleeve.

[0020] In one embodiment, it further includes a guide rail;

[0021] The guide rail is installed in the receiving well, and a jack is arranged on the guide rail.

[0022] In one embodiment, the sleeve is disposed on the guide rail;

[0023] The water-stop assembly further comprises a shield tail brush, and the shield tail brush is mounted on the tunnel gate steel ring;

[0024] A seamless steel pipe is arranged inside the casing.

[0025] One embodiment of the present invention provides a method for prefabricating a prefabricated door, comprising:

[0026] The prefabricated tunnel door for receiving water stop of jacking pipe as described in any one of the above items, and

[0027] Prefabrication steps of the tunnel door:

[0028] The prefabricated tunnel door is assembled in the factory or on the ground. After the components are assembled, they are transported to the jacking pipe receiving well. With the cooperation of cranes and aerial vehicles, a hole is reserved on the side wall of the receiving well. After the prefabricated tunnel door steel bars are connected with the reserved steel bars on the side wall, self-compacting concrete is used to fill the gap between the hole and the tunnel door to complete the installation of the jacking pipe receiving tunnel door.

[0029] The prefabricated tunnel door for receiving water stop of jacking pipe provided by the above technical solution has the following beneficial effects:

[0030] The tunnel gate steel ring, water-stop assembly, casing and suspension support assembly are prefabricated as a set, and the casing is initially connected to the tunnel gate steel ring by bolts. The bolts are removed after the entire set of components is installed. The suspension support assembly prevents the casing from being completely pressed down after the bolts are removed, causing partial detachment of the water-stop assembly located on the upper part of the tunnel gate steel ring, thereby causing damage to the device. The casing is suspended by the suspension support assembly, and after the pipe jacking machine pushes the casing, the casing is separated from the suspension support assembly, which will not affect the operation of the pipe jacking machine and effectively solves the problem of partial detachment of the water-stop assembly located on the upper part of the tunnel gate steel ring due to complete downward pressure of the casing, thereby causing damage to the device. After the tunnel gate steel ring and water-stop assembly are installed, Casing is lowered into the receiving well, and the installed pushing structure pushes the casing into the cave entrance (i.e., inside the tunnel portal steel ring). At this time, the water-stop assembly is pushed open, and the water-stop assembly is placed on the casing with its face turned inward toward the cave entrance. After the pipe jacking machine advances to the receiving well cave entrance, it pushes the casing into the receiving well. At this time, the water-stop assembly placed on the casing is placed on the pipe jacking machine as the pipe jacking machine advances. The water-stop assembly is turned inward and forms a reliable constraint with the pipe jacking machine, thereby achieving the effect of water stopping when the pipe jacking machine is received. The casing, tunnel portal steel ring and water-stop assembly of the present invention may be prefabricated as a set, and the water-stop assembly may be in an inverted state after installation, so there is no need to jack in the casing, but it may also be installed after jacking in the casing, and this is not the only limitation here. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 structures shown in these drawings without paying creative work.

[0032] Figure 1 It is a structural schematic diagram of the present invention;

[0033] Figure 2 for Figure 1 A magnified image of point A;

[0034] Figure 3 It is a schematic diagram of the connection between the casing and the tunnel gate steel ring of the present invention;

[0035] Figure 4 The structure of the sleeve of the present invention is schematically shown in FIG. Figure 1 ;

[0036] Figure 5 The structure of the sleeve of the present invention is schematically shown in FIG. Figure 2 ;

[0037] Figure 6 This is a schematic diagram of the installation of the seamless steel pipe of the present invention;

[0038] Figure 7 It is a schematic diagram of the state in which the movable end of the present invention escapes from the hanging hole.

[0039] The markings in the figure are as follows:

[0040] 100. Cave entrance steel ring;

[0041] 200, water stop assembly;

[0042] 210, water stop rubber ring; 220, backing plate; 230, hinge pressure plate; 240, fixing piece;

[0043] 250, shield tail brush;

[0044] 300, casing; 310, hanging hole; 311, seamless steel pipe;

[0045] 320, pallet; 330, jack socket;

[0046] 400, suspension support assembly; 410, movable end;

[0047] 500. Guide rail; 510. Jack. DETAILED DESCRIPTION

[0048] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0049] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0050] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0051] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0052] Combination Figures 1 to 7 As shown, one embodiment of the present invention provides a prefabricated tunnel door for receiving water stop of jacking pipe, comprising:

[0053] A steel ring 100 fixed to the receiving well opening;

[0054] A water stop assembly 200, wherein the water stop assembly 200 is mounted on the tunnel gate steel ring 100;

[0055] A sleeve 300, wherein the sleeve 300 is mounted on the tunnel gate steel ring 100, and a portion of the sleeve 300 extends out of the tunnel gate steel ring 100;

[0056] A plurality of suspension support assemblies 400, wherein the plurality of suspension support assemblies 400 are installed on the portal steel ring 100 in a circular array, and a movable end 410 is provided on the suspension support assemblies 400, and the movable end 410 is installed on the sleeve 300;

[0057] Wherein, the sleeve 300 includes a first state and a second state;

[0058] When the casing 300 is in the first state, the casing 300 is located in the portal steel ring 100, at which time the water-stop assembly 200 turns inward toward the receiving well hole and abuts against the casing 300. When the casing 300 is in the second state, the casing 300 is located in the receiving well.

[0059] The present invention discloses a prefabricated tunnel gate for receiving water-stopping for pipe jacking, wherein the tunnel gate steel ring 100, the water-stop assembly 200, the sleeve 300 and the suspension support assembly 400 are prefabricated as a set, and the sleeve 300 is initially connected to the tunnel gate steel ring 100 by bolts, and the bolts are taken out after the whole set of components are installed. The suspension support assembly 400 prevents the sleeve 300 from being completely pressed down after the bolts are taken out, thereby preventing the partial water-stop assembly 200 located on the upper part of the tunnel gate steel ring 100 from being disengaged, thereby causing damage to the device. The sleeve 300 is suspended by the suspension support assembly 400, and after the pipe jacking machine pushes the sleeve 300, the sleeve 300 is separated from the suspension support assembly 400, which will not affect the operation of the pipe jacking machine and effectively solves the problem that the sleeve 300 is completely pressed down, thereby causing the partial water-stop assembly 200 located on the upper part of the tunnel gate steel ring 100 to be disengaged, thereby causing damage to the device.

[0060] It should be noted that after installing the tunnel portal steel ring 100 and the water-stop assembly 200, the casing 300 can be lowered into the receiving well, and the casing 300 can be pushed into the tunnel opening (i.e., the inside of the tunnel portal steel ring 100) by the installed pushing structure. At this time, the water-stop assembly 200 is pushed open, and the water-stop assembly 200 is placed on the casing 300 with its face turned inward toward the tunnel opening. After the pipe jacking machine advances to the tunnel opening of the receiving well, it pushes the casing 300 into the receiving well. At this time, the water-stop assembly 200 placed on the casing 300 is placed on the pipe jacking machine as the pipe jacking machine advances. The water-stop assembly 200 is turned inward to form a reliable constraint with the pipe jacking machine, thereby achieving the effect of water stopping when the pipe jacking machine receives water. The casing 300, the tunnel portal steel ring 100 and the water-stop assembly 200 of the present invention can be prefabricated as a set. After installation, the water-stop assembly 200 is in an inverted state, so there is no need to push in the casing 300, but it can also be installed after pushing in the casing, which is not the only limitation here.

[0061] When the jacking pipe is received, that is, when the jacking pipe enters the hole, the jacking machine breaks through the hole in the soil and enters the receiving well. Because the direction of its breakthrough is opposite to the starting direction, the jacking machine cannot form a constraint with the hinge pressure plate 230 after pushing open the hinge pressure plate 230. The muddy water around the tunnel will break through the waterproof rubber ring 210, resulting in water and sand gushing during reception, and the risk of the receiving well end collapsing is very likely to occur. The present invention first pushes the casing 300 into the tunnel gate steel ring 100, thereby turning the movable end 410 of the hinge plate and the waterproof rubber ring 210 inward toward the receiving well hole. Figure 2 and 7 As shown, the movable end 410 of the hinge plate and the waterproof rubber ring 210 are turned inward, which can better withstand the pressure of muddy water and prevent water and sand from gushing out during reception.

[0062] In one embodiment, the suspension support assembly 400 includes a first state and a second state;

[0063] When the suspension support assembly 400 is in the first state, the pipe jacking machine does not push the casing 300, the movable end 410 of the suspension support assembly 400 is located in the casing 300, and the casing 300 is suspended in the tunnel gate steel ring 100 through the movable end 410;

[0064] When the suspension support assembly 400 is in the first state, the pipe jacking machine pushes the casing 300, and the movable end 410 of the suspension support assembly 400 is detached from the casing 300.

[0065] In this embodiment, the portal steel ring 100, the water-stop assembly 200, the sleeve 300 and the suspension support assembly 400 are prefabricated as a set, and the sleeve 300 is initially connected to the portal steel ring 100 by bolts, and the bolts are removed after the entire set of components is installed. The suspension support assembly 400 prevents the sleeve 300 from being completely pressed down after the bolts are removed, causing the partial water-stop assembly 200 located on the upper part of the portal steel ring 100 to be disengaged, thereby causing damage to the device. The sleeve 300 is suspended by the suspension support assembly 400, and after the pipe jacking machine pushes the sleeve 300, the sleeve 300 is separated from the suspension support assembly 400, which will not affect the operation of the pipe jacking machine, and effectively solves the problem of the sleeve 300 being completely pressed down, causing the partial water-stop assembly 200 located on the upper part of the portal steel ring 100 to be disengaged, thereby causing damage to the device.

[0066] In one embodiment, the sleeve 300 is provided with hanging holes 310 having the same number as the hanging support assembly 400, and the movable end 410 of the hanging support assembly 400 is stuck in the hanging hole 310 when the sleeve 300 is not pushed by the pipe jacking machine.

[0067] In the present embodiment, one end of the suspension support assembly 400 is welded to the tunnel gate steel ring 100, and the movable end 410 is L-shaped. After the fixing bolts of the casing 300 and the tunnel gate steel ring 100 are removed, the horizontal section of the movable end 410 passes through the suspension hole 310 and is clamped on one of the side walls of the suspension hole 310. The direction of the horizontal section of the movable end 410 is consistent with the excavation direction of the pipe jacking machine. After the pipe jacking machine pushes the casing 300, the horizontal section of the movable end 410 moves away from the inner wall of the suspension hole 310, and finally the horizontal section moves out. After moving out, the inner wall of the other side of the suspension hole 310 is still in the excavation state, and the other side of the suspension hole 310 presses against the vertical section of the movable end 410, so that the movable end 410 rotates, and finally the movable end 410 is separated from the suspension hole 310. For details, refer to Figure 7 shown.

[0068] It should be noted that, by providing the hanging support assembly 400, compared with directly pushing the casing 300 into the tunnel portal steel ring 100, the system is more stable and will not cause the water-stop assembly 200 to separate from the top edge of the tunnel portal steel ring 100 due to weight, thereby causing water and sand gushing. By using the hanging support assembly 400, the casing 300 is suspended when it is not pushed, and the casing 300 has been cooperated with the pipe jacking machine when it is pushed out, so the above-mentioned problem will not occur. This is explained here.

[0069] In one embodiment, the water-stop assembly 200 includes a water-stop rubber ring 210, a backing plate 220, a hinge pressure plate 230 and a fixing member 240, wherein the water-stop rubber ring 210 is located on one side of the tunnel door steel ring 100, the backing plate 220 is located on a side of the water-stop rubber ring 210 away from the tunnel door steel ring 100, and the hinge pressure plate 230 is located on a side of the backing plate 220 away from the water-stop rubber ring 210;

[0070] The fixing member 240 fixes the waterproof rubber ring 210, the backing plate 220 and the hinge pressing plate 230 in sequence on one side of the tunnel door steel ring 100;

[0071] A jack socket 330 is provided on one side of the sleeve 300;

[0072] Also includes a guide rail 500;

[0073] The guide rail 500 is installed in the receiving well, and a jack 510 is provided on the guide rail 500;

[0074] The water stop assembly 200 further includes a shield tail brush 250, and the shield tail brush 250 is installed on the tunnel gate steel ring 100;

[0075] A seamless steel pipe 311 is arranged inside the casing 300;

[0076] In this embodiment, after installing the tunnel steel ring 100, the waterproof rubber ring 210, the pad 220, the hinge pressure plate 230 and the fixing member 240, the casing 300 can be lowered into the receiving well, and the casing 300 can be pushed into the tunnel opening (inside the tunnel steel ring 100) by the jack 510. The casing 300 pushes the hinge pressure plate 230 and the rubber ring to make them rest on the casing 300. After the pipe jacking machine is excavated to the tunnel opening, it pushes the casing 300 into the receiving well. The hinge pressure plate 230 and the waterproof rubber ring 210 resting on the casing 300 will rest on the pipe jacking machine as the excavation progresses. The hinge pressure plate 230 and the pipe jacking machine form a reliable constraint to achieve the purpose of receiving waterproofing by the pipe jacking machine. The guide rail 500 is used to limit the movement trajectory of the casing 300, and the jack socket 330 is used to bear the pressure of the jack 510.

[0077] It should be noted that the casing 300, the portal steel ring 100 and the water-stop assembly 200 of the present invention may be prefabricated as a set, so there is no need to push the casing 300, but it can also be installed after the casing is pushed in, which is not the only limitation here.

[0078] In one embodiment, a plurality of clamping plates 320 are disposed on the sleeve 300 in a circular array.

[0079] In this embodiment, after the pipe jacking machine excavates to the tunnel entrance, its blade foot will push the clamping plate 320 on the casing 300, and then push the casing 300 until it is pushed out of the tunnel entrance to the receiving well, and the casing 300 will be lifted out of the receiving well. In this process, the pressure plate resting on the casing 300 will also be placed on the pipe jacking machine as it is pushed, forming a reliable constraint with it, preventing the water-stop rubber ring 210 from flipping out, and ensuring the water-stop effect.

[0080] One embodiment of the present invention provides a method for prefabricating a prefabricated door, comprising:

[0081] The prefabricated tunnel door for receiving water stop of jacking pipe as described in any one of the above items, and

[0082] Prefabrication steps of the tunnel door:

[0083] The prefabricated tunnel door is assembled in the factory or on the ground. After the components are assembled, they are transported to the jacking pipe receiving well. With the cooperation of cranes and aerial vehicles, a hole is reserved on the side wall of the receiving well. After the prefabricated tunnel door steel bars are connected with the reserved steel bars on the side wall, self-compacting concrete is used to fill the gap between the hole and the tunnel door to complete the installation of the jacking pipe receiving tunnel door.

[0084] In this embodiment, the portal steel ring 100 is welded from steel plates and is in a U-shape with ribs. The portal steel ring 100 is provided with steel bars, and the arrangement of the steel bars is determined by the reserved steel bar positions at the side wall opening of the receiving shaft, the portal cross-sectional dimensions, and the depth of the covering soil;

[0085] A hinge pressing plate 230, a water-stopping rubber ring 210, a pad 220 and a shield tail brush 250 are installed on the upper surface of the tunnel door steel ring 100;

[0086] The casing 300 is preferably made of steel plate. The cross-section of the casing 300 is consistent with that of the tunnel boring machine. The cross-section size is preferably larger than that of the jacking machine, and each side is preferably 2-3 cm wider. A clamping plate 320 is arranged inside the casing 300. The clamping plate 320 is used to resist the blade foot of the jacking machine, so that the jacking machine can push the casing 300 forward while tunneling.

[0087] Install the casing 300 and the suspension support assembly 400. The casing 300 and the tunnel steel ring 100 are fixed with sleeves and bolts. The suspension support assembly 400 is composed of a steel plate and a movable block. The steel plate and the movable block are hinged. The steel plate is welded to the inner wall of the tunnel steel ring 100. The movable block is the above-mentioned movable end 410. The movable block is set in the area above the casing 300 and is easily set at ±30° of the mid-vertical line. The movable block is used to prevent the casing 300 from being completely pressed down and causing the upper pressure plate to be disengaged when the bolts of the casing 300 are removed before receiving;

[0088] A seamless steel pipe 311 is welded inside the casing 300 to prevent deformation during vertical hoisting or installation;

[0089] A prefabricated door is installed at the opening of the receiving well side wall. The prefabricated door steel bars are connected with the reserved steel bars at the opening, and the gap between them is filled with self-compacting concrete.

[0090] Before the pipe jacking machine advances to the tunnel entrance, it checks whether the position of the movable end 410 is accurate and removes the fixing bolts. After advancing to the tunnel entrance, its blade foot will push the casing 300 clamping plate 320, and then push the casing 300 until it is pushed out of the tunnel entrance to the receiving well, and the casing 300 is hoisted out of the receiving well. In this process, the hinge pressure plate 230 resting on the casing 300 will also be placed on the pipe jacking machine as it is pushed, forming a reliable constraint with it, preventing the water-stop rubber ring 210 from turning out, and ensuring the water-stop effect.

[0091] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the paper document and the contents of the drawings of the present invention under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A prefabricated tunnel door for receiving water stop for jacking pipe, characterized in that: include: A tunnel door steel ring (100) fixed to the receiving well opening; A water-stop assembly (200), wherein the water-stop assembly (200) is mounted on the tunnel gate steel ring (100); A sleeve (300), the sleeve (300) being mounted on the tunnel gate steel ring (100), and the sleeve (300) partially extending out of the tunnel gate steel ring (100); A plurality of suspension support assemblies (400), wherein the plurality of suspension support assemblies (400) are mounted on the portal steel ring (100) in a circular array, and a movable end (410) is provided on the suspension support assembly (400), and the movable end (410) is mounted on the sleeve (300); Wherein, the sleeve (300) includes a first state and a second state; When the casing (300) is in the first state, the casing (300) is located in the tunnel gate steel ring (100), and the water stop assembly (200) is turned inward toward the receiving well hole and abuts against the casing (300). When the casing (300) is in the second state, the casing (300) is located in the receiving well.

2. A prefabricated tunnel door for jacking pipe receiving and water stopping as claimed in claim 1, characterized in that: The suspension support assembly (400) comprises a first state and a second state; When the suspension support assembly (400) is in the first state, the pipe jacking machine does not push the casing (300), the movable end (410) of the suspension support assembly (400) is located in the casing (300), and the casing (300) is suspended in the tunnel gate steel ring (100) through the movable end (410); When the suspension support assembly (400) is in the first state, the pipe jacking machine pushes the casing (300), and the movable end (410) of the suspension support assembly (400) is detached from the casing (300).

3. A prefabricated tunnel door for receiving and stopping water in a jacking pipe as claimed in claim 2, characterized in that: The sleeve (300) is provided with hanging holes (310) whose number is the same as the hanging support assembly (400); when the sleeve (300) is not pushed by the pipe jacking machine, the movable end (410) of the hanging support assembly (400) is stuck in the hanging hole (310).

4. A prefabricated tunnel door for receiving and stopping water in a jacking pipe as claimed in claim 2, characterized in that: The water-stop assembly (200) comprises a water-stop rubber ring (210), a backing plate (220), a hinge pressure plate (230) and a fixing member (240); the water-stop rubber ring (210) is located on one side of the tunnel door steel ring (100); the backing plate (220) is located on the side of the water-stop rubber ring (210) away from the tunnel door steel ring (100); and the hinge pressure plate (230) is located on the side of the backing plate (220) away from the water-stop rubber ring (210).

5. A prefabricated tunnel door for receiving and stopping water in a jacking pipe as claimed in claim 2, characterized in that: The fixing member (240) fixes the waterproof rubber ring (210), the backing plate (220) and the hinge pressing plate (230) in sequence on one side of the tunnel door steel ring (100).

6. A prefabricated tunnel door for jacking pipe receiving and water stopping as claimed in claim 2, characterized in that: A plurality of clamping plates (320) are arranged on the sleeve (300) in a circular array.

7. A prefabricated tunnel door for receiving and stopping water in a jacking pipe as claimed in claim 1, characterized in that: A jack socket (330) is provided on one side of the sleeve (300).

8. A prefabricated tunnel door for receiving and stopping water in a jacking pipe as claimed in claim 1, characterized in that: Also includes a guide rail (500); The guide rail (500) is installed in the receiving well, and a jack (510) is arranged on the guide rail (500).

9. A prefabricated tunnel door for receiving and stopping water in a jacking pipe as claimed in claim 8, characterized in that: The sleeve (300) is arranged on the guide rail (500); The water-stop assembly (200) further comprises a shield tail brush (250), wherein the shield tail brush (250) is mounted on the tunnel gate steel ring (100); A seamless steel pipe (311) is arranged inside the casing (300).

10. A method for prefabricating a prefabricated door, characterized in that: include: The prefabricated tunnel door for receiving and stopping water in a jacking pipe as claimed in any one of claims 1 to 9, and Prefabrication steps of the tunnel door: The prefabricated tunnel door is assembled in the factory or on the ground. After the components are assembled, they are transported to the jacking pipe receiving well. With the cooperation of cranes and aerial vehicles, a hole is reserved on the side wall of the receiving well. After the prefabricated tunnel door steel bars are connected with the reserved steel bars on the side wall, self-compacting concrete is used to fill the gap between the hole and the tunnel door to complete the installation of the jacking pipe receiving tunnel door.

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