A sealing device for the launching tunnel door of a combined pipe curtain

Abstract

The present application discloses a sealing device for the starting tunnel door of a combined pipe curtain, including a first embedded frame and a second embedded frame which are embedded in the starting end wall in sequence from deep to shallow, the interiors of the first embedded frame and the second embedded frame are both penetrated in the first direction and the two are connected, the shape of the first embedded frame fits the jacking main machine, and the shape of the second embedded frame fits the pipe section; it also includes a first sealing component arranged in the first embedded frame and a second sealing component arranged in the second embedded frame, the first sealing component is used to seal the jacking main machine, and the second sealing component is used to seal the pipe section. The above-mentioned sealing device for the starting tunnel door of a combined pipe curtain not only adopts two sealing methods and seals the jacking main machine and the pipe section respectively, thereby improving the sealing effect of the jacking main machine and the pipe section; it also fits the jacking main machine and the pipe section in shape, thereby being suitable for sealing jacking main machines and pipe sections of special shapes.

Description

Technical Field

[0001] The present application relates to the technical field of underground engineering pipe jacking construction, and in particular to a sealing device for a starting tunnel door of a combined pipe curtain. Background Art

[0002] With the acceleration of China's urbanization process, more and more large underground structures are being built under urban roads or important buildings. The pipe-roof method can form an advanced pre-support system, which plays a huge role in helping to maintain the stability of the heading, control ground deformation, and prevent collapse and roof-fall accidents.

[0003] Due to the technical characteristics of pipe jacking construction, the starting tunnel door will never be sealed from the time when the pipe jacking exits the tunnel until the tunnel is through. In order to prevent part of the soil excavated by the pipe jacking machine or the slurry filling the building gap from leaking out of the starting tunnel door through the building gap in the form of muddy water, resulting in stratum loss, and making the surface deformation of the construction difficult to control, a pipe jacking tunnel door sealing system is required during the construction of the pipe jacking tunnel. However, the existing starting tunnel door sealing devices are only suitable for the tunnel door sealing of conventional pipe jacking equipment, and can only provide the function of tunnel opening sealing for the construction of a single pipe curtain, that is, a single pipe curtain tunnel; they cannot be directly applied to the construction of special combined pipe curtains, and cannot provide the function of tunnel opening sealing for the construction of combined pipe curtains, that is, multiple complex pipe curtain tunnels at the same time.

[0004] Therefore, how to provide a sealing device for the starting tunnel of a combined pipe curtain that solves the above-mentioned technical problems is a technical problem that technical personnel in this field urgently need to solve. Summary of the invention

[0005] The purpose of the present application is to provide a sealing device for the starting tunnel door of a combined pipe curtain, which not only adopts two layers of sealing to seal the jacking main machine and the pipe section respectively, thereby improving the sealing effect of the jacking main machine and the pipe section; but also conforms to the jacking main machine and the pipe section in appearance, thereby being suitable for the sealing of jacking main machines and pipe sections with special shapes.

[0006] To achieve the above-mentioned purpose, the present application provides a starting tunnel door sealing device for a combined pipe curtain, including a first embedded frame and a second embedded frame embedded in the starting end wall from deep to shallow in sequence, the interiors of the first embedded frame and the second embedded frame are both penetrated in the first direction and the two are connected, the shape of the first embedded frame fits the jacking main machine, and the shape of the second embedded frame fits the pipe section; it also includes a first sealing component arranged in the first embedded frame and a second sealing component arranged in the second embedded frame, the first sealing component is used to seal the jacking main machine, and the second sealing component is used to seal the pipe section.

[0007] In some embodiments, the first embedded frame has a waveform shape consisting of a plurality of intersecting circles, and the second embedded frame has a runway shape consisting of two circles and a straight section.

[0008] In some embodiments, the first sealing assembly includes a plurality of first sealing units, and the plurality of first sealing units are arranged in a wave-like shape and surround the main machine.

[0009] In some embodiments, a single first sealing unit includes a first sealing member and a first pressing member installed on the first embedded frame, and when the first pressing member is pushed by the jacking main machine, the first sealing member contacts and seals with the jacking main machine.

[0010] In some embodiments, a single first sealing unit further includes a first rotating shaft and a first connecting member, the first sealing member and the first pressing member are installed on the first embedded frame through the first connecting member, and the first pressing member rotates around the first rotating shaft when pushed by the jacking host.

[0011] In some embodiments, the first pressing member and the first rotating shaft form a hinged plate structure, and the first sealing member is a curtain rubber plate.

[0012] In some embodiments, the second sealing assembly includes a plurality of second sealing units, and the plurality of second sealing units surround the pipe segment in a racetrack shape.

[0013] In some embodiments, a single second sealing assembly includes a second sealing member and a second pressing member installed on the second embedded frame, and the second pressing member makes the second sealing member contact and seal with the pipe joint when pushed by the pipe joint.

[0014] In some embodiments, a single second-line sealing assembly also includes a second rotating shaft and a second connecting member, and the second sealing member and the second pressing member are installed on the second embedded frame through the second connecting member, and the second pressing member rotates around the second rotating shaft when pushed by the pipe joint.

[0015] In some embodiments, the second pressing member and the second rotating shaft form a hinged plate structure, and the second sealing member is a curtain rubber plate.

[0016] Compared with the above-mentioned background technology, the starting tunnel door sealing device for the combined pipe curtain provided in the present application mainly includes a first embedded frame, a second embedded frame, a first sealing component and a second sealing component; the first embedded frame and the second embedded frame are embedded in the starting end wall from deep to shallow in sequence, the interiors of the first embedded frame and the second embedded frame are both penetrated in the first direction and the two are connected, the shape of the first embedded frame fits the jacking main machine, and the shape of the second embedded frame fits the pipe section; the first sealing component is arranged in the first embedded frame, and the second sealing component is arranged in the second embedded frame, the first sealing component is used to seal the jacking main machine, and the second sealing component is used to seal the pipe section.

[0017] The sealing device for the starting tunnel door of the combined pipe curtain not only adopts two sealing steps to seal the jacking main machine and the pipe section respectively, thereby improving the sealing effect of the jacking main machine and the pipe section; but also conforms to the jacking main machine and the pipe section in appearance, thereby being suitable for the sealing of jacking main machines and pipe sections with special shapes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application 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 embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0019] Figure 1 A schematic diagram of the structure of a sealing device for a launching tunnel of a combined pipe curtain provided in an embodiment of the present application;

[0020] Figure 2 An application structural diagram of the initial tunnel door sealing device for the combined tube curtain provided in an embodiment of the present application;

[0021] Figure 3 An application plan view of the initial tunnel door sealing device for the combined tube curtain provided in an embodiment of the present application;

[0022] Figure 4 A schematic plan view of a first embedded frame and a second embedded frame provided in an embodiment of the present application;

[0023] Figure 5 A schematic plan view of a first embedded frame and a first sealing assembly provided in an embodiment of the present application;

[0024] Figure 6 A schematic plan view of a second embedded frame and a second sealing assembly provided in an embodiment of the present application;

[0025] Figure 7 A schematic diagram of the construction process flow provided for an embodiment of the present application.

[0026] in:

[0027] 1-first embedded frame, 2-second embedded frame, 3-first sealing assembly, 4-second sealing assembly, 5-grouting pipe;

[0028] 301 - first sealing member, 302 - first pressing member, 303 - first rotating shaft, 304 - first connecting member, 401 - second sealing member, 402 - second pressing member, 403 - second rotating shaft, 404 - second connecting member;

[0029] 001-starting end wall, 01-jacking main machine, 02-pipe section, 011-first jacking pipe, 012-second jacking pipe, 013-third jacking pipe, 014-fourth jacking pipe. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] Please refer to Figures 1 to 7 In the figure, the arrow is the push direction, the X-axis direction is the first direction, the Y-axis direction is the second direction, and the Z-axis direction is the third direction; wherein, Figure 1 A schematic diagram of the structure of the initial tunnel door sealing device for the combined tube curtain provided in an embodiment of the present application, Figure 2 This is an application structure diagram of the initial tunnel door sealing device for the combined pipe roof provided in the embodiment of the present application. Figure 3 This is an application plan view of the initial tunnel door sealing device for the combined pipe curtain provided in an embodiment of the present application. Figure 4 A schematic plan view of a first embedded frame and a second embedded frame provided in an embodiment of the present application, Figure 5 A schematic plan view of a first embedded frame and a first sealing assembly provided in an embodiment of the present application, Figure 6 A schematic plan view of a second embedded frame and a second sealing assembly provided in an embodiment of the present application, Figure 7 A schematic diagram of the construction process flow provided for an embodiment of the present application.

[0033] In a first specific embodiment, the present application provides a sealing device for a starting tunnel door of a combined pipe curtain, and at the same time, implicitly discloses a sealing and water-stopping method for a starting tunnel door of a combined jacking pipe, which is applicable to a combined pipe curtain construction step.

[0034] The construction steps of a combined pipe curtain are as follows:

[0035] 1. The combined pipe curtain machine is composed of multiple pipe jacking machines, i.e., the main jacking machine 01. Before the construction of the combined pipe curtain machine, the pilot pipes of the pipe jacking machines on the left and right sides in the second direction are respectively jacked in, and the accuracy of these two pipes must be guaranteed;

[0036] 2. Under the guidance of the pilot ducts on both sides, the combined pipe curtain machine is pushed forward in the first direction;

[0037] 3. As the combined pipe curtain machine equipment is pushed forward, the pipe section 02 is assembled synchronously at the rear to form a good rigid support structure.

[0038] Based on this, the present application proposes a starting tunnel door sealing device for a combined pipe curtain, which can form a good tunnel door sealing effect according to the appearance of multiple jacking machines of the combined pipe curtain machine, and effectively prevent the problems of mud and water overflowing from the tunnel door and water gushing.

[0039] The starting tunnel door sealing device includes a starting end wall 001, an embedded frame and a sealing component; specifically, it mainly includes a first embedded frame 1, a second embedded frame 2, a first sealing component 3 and a second sealing component. The shape of the first embedded frame 1 matches the jacking host 01, and the shape of the second embedded frame 2 matches the pipe section 02.

[0040] The interior of the starting end wall 001 is a stepped structure, so that the first embedded frame 1 and the second embedded frame 2 are embedded in sequence from deep to shallow in the first direction, and the first embedded frame 1 and the second embedded frame 2 can be a structure connected as one body or a separate structure, providing space for the jacking main machine 01 to jack up, and providing an installation position for the door sealing; the interiors of the first embedded frame 1 and the second embedded frame 2 are both through in the first direction, and the interiors of the first embedded frame 1 and the second embedded frame 2 are connected, so that the jacking main machine 01 passes through the first embedded frame 1 and the second embedded frame 2 in sequence, and the pipe joint 02 passes through the first embedded frame 1 and the second embedded frame 2 in sequence.

[0041] The first sealing component 3 is arranged on the first embedded frame 1. When the jacking main machine 01 passes through the first embedded frame 1, the first sealing component 3 seals the jacking main machine 01; the second sealing component is arranged on the second embedded frame 2. When the pipe segment 02 passes through the second embedded frame 2, the second sealing component seals the pipe segment 02.

[0042] In this embodiment, in the first direction, the first embedded frame 1 and the first sealing component 3 are located in the front, and the front position matches the shape of the jacking main machine 01; the second embedded frame 2 and the second sealing component 4 are located in the rear, and the rear position matches the shape of the pipe segment 02; in summary, in terms of sealing form, the starting tunnel door sealing device adopts two tunnel door seals at the starting end wall 001, which respectively seal the jacking main machine 01 and the pipe segment 02, thereby improving the sealing effect of the jacking main machine 01 and the pipe segment 02, and achieving a good tunnel door water-stopping and slurry-stopping effect.

[0043] It should be noted that the front and rear positions of the starting tunnel sealing device match the jacking main machine 01 and the pipe segment 02 in appearance, and the two seals also match the jacking main machine 01 and the pipe segment 02. Because of the matching appearance, no matter how many jacking machines are in the jacking main machine 01 and how the shape of the pipe segment 02 is, it is only necessary to adaptively adjust the starting tunnel sealing device to ensure the match with the jacking main machine 01 and the pipe segment 02, so as to be suitable for the sealing of the jacking main machine 01 and the pipe segment 02 with special shapes.

[0044] In addition, it also includes a grouting pipe 5 arranged at the starting end wall 001.

[0045] In some embodiments, the first embedded frame 1 has a waveform shape consisting of a plurality of circles intersecting in the second direction, and the second embedded frame 2 has a runway shape consisting of two circles and a straight section.

[0046] In this embodiment, the shapes of the first embedded frame 1 and the second embedded frame 2 are related to the shapes of the jacking main unit 01 and the pipe segment 02 .

[0047] For example, the main jacking machine 01 uses four jacking machines. The four jacking machines are arranged in the second direction, with the centers of the circles on the same horizontal line, and their appearance is a waveform of four intersecting circles; correspondingly, the waveform of the first embedded frame 1 is a waveform of four intersecting circles, and its centers are the same as the centers of the four jacking machines. The two ends of the pipe section 02 are arcs, and the middle is a straight line segment connecting the two arcs; correspondingly, the two ends of the runway shape of the second embedded frame 2 are two circles concentric with the jacking machine, and the middle is a straight section.

[0048] In some embodiments, the first sealing assembly 3 includes a plurality of first sealing units, and the plurality of first sealing units surround and push into the main machine 01 in a wave-like shape.

[0049] In this embodiment, the first sealing unit is fixed to the corrugated first embedded frame 1 , and a plurality of first sealing units are also corrugated and surround the jacking main machine 01 , forming a first door seal that fits the jacking main machine 01 .

[0050] In some embodiments, the second sealing assembly 4 includes a plurality of second sealing units, and the plurality of second sealing units surround the pipe segment 02 in a racetrack shape.

[0051] In this embodiment, the second sealing assembly 4 is fixed to the runway-shaped second embedded frame 2 , and a plurality of second sealing units form a second door seal that fits the pipe segment 02 .

[0052] In some embodiments, a single first sealing unit includes a first sealing member 301 and a first pressing member 302 installed on the first embedded frame 1 . When the first pressing member 302 is pushed by the jacking host 01 , the first sealing member 301 contacts and seals with the jacking host 01 .

[0053] In some embodiments, a single first sealing unit also includes a first rotating shaft 303 and a first connecting member 304. The first sealing member 301 and the first pressing member 302 are installed on the first embedded frame 1 through the first connecting member 304. The first pressing member 302 rotates around the first rotating shaft 303 when pushed by the jacking host 01.

[0054] In some embodiments, the first pressing member 302 and the first rotating shaft 303 form a hinged plate structure, and the first sealing member 301 is a cord rubber plate.

[0055] In some embodiments, a single second sealing assembly 4 includes a second sealing member 401 and a second pressing member 402 installed on the second embedded frame 2 . When the second pressing member 402 is pushed by the pipe joint 02 , the second sealing member 401 contacts and seals with the pipe joint 02 .

[0056] In some embodiments, a single second sealing assembly 4 also includes a second rotating shaft 403 and a second connecting member 404. The second sealing member 401 and the second pressing member 402 are installed on the second embedded frame 2 through the second connecting member 404. The second pressing member 402 rotates around the second rotating shaft 403 when pushed by the pipe joint 02.

[0057] In some embodiments, the second pressing member 402 and the second rotating shaft 403 form a hinged plate structure, and the second sealing member 401 is a cord rubber plate.

[0058] In this embodiment, the first sealing assembly 3 and the second sealing assembly 4 have the same principle, the first sealing member 301 and the second sealing member 401 are rubber sheets, the first pressing member 302 and the second pressing member 402 are flaps, and the first connecting member 304 and the second connecting member 404 are connecting bolts. The flaps are hinged plate structures that can rotate around corresponding rotating shafts. When the jacking main machine 01 and the pipe section 02 are jacked through the two tunnel doors for sealing, the flaps are folded and squeeze the rubber sheets to make them contact and seal with the jacking main machine 01 and the pipe section 02, fill the gaps, and prevent the slurry from flowing out.

[0059] It should be noted that the cord rubber sheet is an integral rubber structure whose shape fits the jacking main unit 01 and the pipe segment 02, and a plurality of flaps are evenly distributed around the front end of the cord rubber sheet. Bolt holes are provided on the first embedded frame 1 and the second embedded frame 2, and the flaps and the cord rubber sheet are connected as a whole and fixed on the embedded ring frame by bolts.

[0060] A method for sealing and stopping water of a combined pipe jacking starting tunnel is as follows:

[0061] 1. The initial end wall 001 is constructed, and the first embedded frame 1 matching the jacking main machine 01 and the second embedded frame 2 matching the pipe section 02 are embedded in two steps in sequence;

[0062] 2. Install the first sealing assembly 3, and then push the main machine 01 forward. When the main machine 01 passes through the first sealing, the rubber of the curtain is pressed by squeezing the flap to form a good seal for the main machine 01;

[0063] 3. Install the second sealing assembly 4, continue to push the main engine 01, and when the pipe section 02 passes through the second tunnel door seal, the rubber curtain is pressed by the pressure plate to form a good seal for the pipe section 02;

[0064] 4. Inject high-concentration mud into the cavity between the first and second seals, the first embedded frame 1 and the second embedded frame 2, and the jacking host 01;

[0065] 5. Under the sealing effect of the two tunnel doors, carry out subsequent jacking construction.

[0066] In addition, the spacing H between the first embedded frame 1 and the second embedded frame 2 is determined according to the height dimension I of the first pressing member 302, and the condition H<I must be met. The overall length of the first embedded frame 1 and the second embedded frame 2 is consistent with the starting end wall 001. The length L2 of the first embedded frame 1 and the length L1 of the second embedded frame 2 must meet the requirements: L2 is not less than the distance from the front end of the jacking mainframe 01 to the shield body, that is, it is necessary to ensure that the jacking mainframe 01 can be filled between the shield body and the first embedded frame 1 when entering the seal, forming a good seal for the mainframe, and the distance L1 is suitable for not interfering with the previous seal after the sealing filling pipe section 02 and the second embedded frame 2.

[0067] In addition, please combine Figure 7 Further understanding of the construction steps of the combined pipe curtain:

[0068] First, the first jacking pipe 011 and the second jacking pipe 012 correspond to the pilot pipe, and can be pushed forward to form two pilot channels, that is, two pipe curtain tunnels;

[0069] Then, under the positioning of the pilot channel, the jacking main machine 01 continues to jack, that is, the third jacking pipe 013 and the fourth jacking pipe 014. At this time, four pipe curtain tunnels are formed. The circles of the four pipe curtain tunnels intersect and bite in sequence, that is, the wave shape of the jacking main machine 01, as shown in FIG. Figure 4 and Figure 5 As shown, the first embedded frame 1 and the first sealing assembly 3 fit with the jacking main machine 01, thereby providing sealing for the jacking main machine 01 with a special shape;

[0070] Next, after the pipe segment 02 is assembled, it is pushed forward. The shape of the pipe segment 02 is smaller than the waveform shape of the jacking main unit 01. Figure 4 and Figure 6 As shown, the second embedded frame 2 and the second sealing assembly 4 fit with the pipe segment 02, thereby providing sealing for the pipe segment 02 with a special shape.

[0071] It should be noted that many of the components mentioned in this application are universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0072] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0073] The above is a detailed introduction to the starting tunnel sealing device for the combined pipe curtain provided by the present application. This article uses specific examples to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A sealing device for the starting tunnel door of a combined pipe curtain, characterized in that: The invention comprises a first embedded frame (1) and a second embedded frame (2) which are embedded in the starting end wall (001) in order from deep to shallow, the interiors of the first embedded frame (1) and the second embedded frame (2) are both penetrated in a first direction and the two are connected, the shape of the first embedded frame (1) matches the jacking main machine (01), and the shape of the second embedded frame (2) matches the pipe joint (02); and also comprises a first sealing component (3) arranged on the first embedded frame (1) and a second sealing component (4) arranged on the second embedded frame (2), the first sealing component (3) is used to seal the jacking main machine (01), and the second sealing component (4) is used to seal the pipe joint (02); The first sealing assembly (3) comprises a plurality of first sealing units, wherein the plurality of first sealing units are in a wave-shaped manner and surround the jacking main machine (01); a single first sealing unit comprises a first sealing member (301) and a first pressing member (302) mounted on the first embedded frame (1), wherein the first pressing member (302) makes the first sealing member (301) contact and seal with the jacking main machine (01) when pushed by the jacking main machine (01); a single first sealing unit further comprises a first rotating shaft (303) and a first connecting member (304), wherein the first sealing member (301) and the first pressing member (302) are mounted on the first embedded frame (1) via the first connecting member (304), and the first pressing member (302) rotates around the first rotating shaft (303) when pushed by the jacking main machine (01); The second sealing assembly (4) comprises a plurality of second sealing units, and the plurality of second sealing units surround the pipe section (02) in a racetrack shape; a single second sealing assembly (4) comprises a second sealing member (401) and a second pressing member (402) mounted on the second embedded frame (2); the second pressing member (402) makes the second sealing member (401) contact and seal with the pipe section (02) when pushed by the pipe section (02); the single second sealing assembly (4) further comprises a second rotating shaft (403) and a second connecting member (404); the second sealing member (401) and the second pressing member (402) are mounted on the second embedded frame (2) via the second connecting member (404); the second pressing member (402) rotates around the second rotating shaft (403) when pushed by the pipe section (02).

2. The sealing device for the starting tunnel door of the combined pipe curtain according to claim 1, characterized in that: The first embedded frame (1) has a waveform shape, which is composed of a plurality of intersecting circles; the second embedded frame (2) has a runway shape, which is composed of two circles and a straight section.

3. The sealing device for the launching door of the combined pipe roof according to claim 1, characterized in that: The first pressing member (302) and the first rotating shaft (303) form a hinged plate structure, and the first sealing member (301) is a cord rubber plate.

4. The sealing device for the launching hole of the combined pipe curtain according to claim 1, characterized in that: The second pressing member (402) and the second rotating shaft (403) form a hinged plate structure, and the second sealing member (401) is a cord rubber plate.

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