CN215369885U - Sealing and water stopping device at originating tunnel portal of rectangular pipe-jacking tunnel - Google Patents
Sealing and water stopping device at originating tunnel portal of rectangular pipe-jacking tunnel Download PDFInfo
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- CN215369885U CN215369885U CN202121503889.7U CN202121503889U CN215369885U CN 215369885 U CN215369885 U CN 215369885U CN 202121503889 U CN202121503889 U CN 202121503889U CN 215369885 U CN215369885 U CN 215369885U
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Abstract
The utility model discloses a sealing and water-stopping device at an originating tunnel portal of a rectangular pipe-jacking tunnel, which solves the problem that muddy water is easy to overflow in the construction of steel pipes in a water-rich area in the prior art, has the beneficial effects of better sealing effect and better adaptability to the construction conditions of high water pressure and high penetration in a water-rich sand layer, and has the following specific scheme: the utility model provides a sealed watertight fittings of portal department of originating in rectangle push pipe tunnel, the loach carrying platform comprises a supporting fram, the support frame is connected with pre-buried portal frame, the outside that the portal was originally originated is located to the support frame and is higher than the portal setting of originating, first board and second part are installed to the bottom side of support frame, interval settlement distance between first board and the second part, and the pipeline that is used for pouring into the grease between first board and the second part passes the support frame bottom side setting, the support frame is kept away from the lateral part of pre-buried portal frame and is fixed with flexible curtain, flexible curtain is buckled and is set up the below that makes one side of flexible curtain be located the support frame.
Description
Technical Field
The utility model relates to the field of pipe-jacking tunnel construction, in particular to a sealing and water-stopping device at an originating tunnel portal of a rectangular pipe-jacking tunnel.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
With the continuous development of the underground engineering of modern cities, the pipe jacking method is widely applied to the construction of street crossing channels due to the advantages of small disturbance to the ground, short construction period, high civilized construction degree and the like.
In the whole construction process of the pipe-jacking tunnel, ensuring that the starting tunnel portal has good sealing performance is an important research subject. If the sealing and water-stopping effect of the initial tunnel portal is not good, the consequences of large amount of muddy water overflowing in the tunnel, water and sand gushing at the tunnel portal, ground surface settlement and the like can be caused. When the rectangular pipe-jacking tunnel is constructed in a water-rich sand layer, the rectangular pipe-jacking tunnel is often subjected to geological conditions of high water pressure and high permeability, so that the rectangular pipe-jacking tunnel construction has extremely high requirements on starting tunnel portal water resistance.
The existing sealing technology for the tunnel door of the rectangular push pipe starting mostly adopts a folding pressing plate, a flexible curtain and other sealing forms, and the slurry overflow in the tunnel is isolated by manually controlling the grease injection amount.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide the sealing and water-stopping device at the starting tunnel portal of the rectangular pipe-jacking tunnel, which can effectively cut off muddy water, prevent the muddy water from leaking outwards and further improve the pipe-jacking construction quality.
In order to achieve the purpose, the utility model is realized by the following technical scheme:
the utility model provides a sealed watertight fittings of portal department of originating in rectangle push pipe tunnel, the loach carrying platform comprises a supporting fram, the support frame is connected with pre-buried portal frame, the outside that the portal was originally originated is located to the support frame and is higher than the portal setting of originating, first board and second part are installed to the bottom side of support frame, interval settlement distance between first board and the second part, and the pipeline that is used for pouring into the grease between first board and the second part passes the support frame bottom side setting, the support frame is kept away from the lateral part of pre-buried portal frame and is fixed with flexible curtain, flexible curtain is buckled and is set up the below that makes one side of flexible curtain be located the support frame.
According to the sealing water-stopping device, when the jacking pipe enters the initial tunnel door, the first plate is used as a first seal to effectively prevent muddy water from leaking outwards, and grease can be injected between the second part and the first plate through the pipeline to further block muddy water; the top pipe can contact with the flexible curtain, and the flexible curtain further guarantees sealing performance of the water stopping device through keeping contact with the top pipe.
According to the sealing and water-stopping device for the originating tunnel portal of the rectangular pipe-jacking tunnel, the first plate is the spring steel plate, so that the strength of the spring steel plate can be guaranteed, the spring steel plate has set elasticity, and pipe joints are not easy to damage;
in order to guarantee the effect of preventing muddy water exosmosis for the first time of the first plate, one plate is close to the door frame of the pre-buried hole, and the first plate is perpendicular to the bottom side of the support frame.
According to the sealing and water-stopping device for the originating tunnel portal of the rectangular pipe-jacking tunnel, the second component is the steel brush, one end of the steel brush is fixedly connected with the support frame, and the other end of the steel brush is arranged towards the originating tunnel portal direction, namely the steel brush is obliquely arranged relative to the bottom side of the support frame, the steel brush can be used for being matched with the first plate, and after grease is injected into a pipeline, muddy water can be effectively separated by the steel brush; and the steel brush can effectively prevent the tail of the shield tunneling machine from seeping into muddy water in the advancing process of the jacking pipe.
According to the sealing and water-stopping device for the originating portal of the rectangular pipe-jacking tunnel, the open hole is formed in the bottom side of the supporting frame, the pipeline is pre-buried in the main structure on the peripheral side of the originating portal, the inlet is formed in one end of the pipeline and located on the side face of the main structure, the other end of the pipeline exceeds the main structure and can penetrate through the supporting frame to be communicated with the open hole, and the pipeline is communicated with the open hole, so that water-insoluble grease can be directly pumped into the open hole through the pipeline, manual injection is not needed, and the working efficiency is fully improved.
According to the sealing and water-stopping device for the originating tunnel portal of the rectangular pipe-jacking tunnel, one side of the flexible curtain is fixed to one side, far away from the buried tunnel portal frame, of the support frame through the fastener.
According to the sealing and water-stopping device for the originating tunnel portal of the rectangular pipe-jacking tunnel, the pressing plate is arranged on the outer side of the flexible curtain, the fastening piece penetrates through the pressing plate, one side of the flexible curtain and the support frame, and the pressing plate is arranged on the outer side of the flexible curtain, so that the flexible curtain is not prone to everting.
According to the sealing and water stopping device for the originating tunnel portal of the rectangular pipe-jacking tunnel, in order to ensure that one side of the support frame is attached to the main structure, the bottom side of the support frame is a plane, the support frame is a box body, and one side of the box body is connected with the embedded tunnel portal frame in a welding mode.
According to the sealing and water stopping device for the originating tunnel portal of the rectangular pipe-jacking tunnel, the vertical rib plate is arranged in the support frame and is perpendicular to the bottom side of the support frame, and the support strength of the support frame is effectively enhanced by the vertical rib plate.
According to the sealing and water stopping device for the starting tunnel portal of the rectangular pipe-jacking tunnel, the bottom side of the support frame is set to be a plane, the top side of the support frame is obliquely arranged, namely, one side of the support frame, which is connected with the flexible curtain, is lower than the other side of the support frame, and the support frame obliquely arranged on the top side is convenient to mount.
According to the sealing and water stopping device for the originating tunnel portal of the rectangular pipe-jacking tunnel, the longitudinal section of the embedded tunnel portal frame is L-shaped, the embedded tunnel portal frame is embedded in the outer side and the inner side of the originating tunnel portal, and the embedded tunnel portal frame is not only used for being connected with the supporting frame.
The beneficial effects of the utility model are as follows:
1) the integral structure is provided with three seals, when the jacking pipe enters the starting tunnel portal, the first plate is used as the first seal to effectively prevent muddy water from seeping, grease can be injected between the second part and the first plate through the pipeline, and the second part further blocks muddy water; the top pipe can contact with the flexible curtain, and the flexible curtain further guarantees sealing performance of the water stopping device through keeping contact with the top pipe, so that construction quality of the top pipe is correspondingly improved.
2) The pipe jacking device can be used for pumping grease in the pipe jacking process through the pre-buried pipeline, the grease is pressed into the space among the second component, the first plate and the pipe jacking, the grease is a semi-solid oily substance which is insoluble in water, the space can be effectively blocked, and muddy water can be effectively blocked; the frictional resistance between the pipe joints and the soil body is reduced; compared with the hand greasing, the working efficiency is greatly improved.
3) According to the utility model, the pressing plate is arranged at the outer side of the flexible curtain, so that the stability of the flexible curtain can be ensured, and the flexible curtain is not easy to turn outwards.
4) The first plate is the elastic steel plate, so that the strength is high, the muddy water under high water pressure infiltration can be effectively prevented from seeping outwards, and the pipe joint is not easy to damage due to certain elasticity.
5) According to the utility model, the second component is the steel brush, grease is coated on the surface of the steel brush after the grease is injected into the pipeline, so that muddy water can be effectively blocked, and the tail of the shield tunneling machine can be effectively prevented from infiltrating muddy water during the advancing process of the jacking pipe by the steel brush.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model.
Fig. 1 is a sectional view of a sealing and water stopping device installed at an originating tunnel portal of a rectangular pipe-jacking tunnel according to one or more embodiments of the present invention.
Fig. 2 is a front view of the connection between the inner side surface of the support frame and the originating tunnel door in the sealing and water-stopping device at the originating tunnel door of the rectangular pipe-jacking tunnel according to one or more embodiments of the present invention.
In the figure: the spacing or dimensions between each other are exaggerated to show the location of the various parts, and the schematic is shown only schematically.
Wherein: 1. the structure comprises a main body structure, 2 parts of a pre-buried tunnel door frame, 3 parts of a spring steel plate, 4 parts of a steel brush, 5 parts of a box body, 6 parts of a flexible curtain, 7 parts of a pressing plate, 8 parts of a nut, 9 parts of a vertical rib plate, 10 parts of a pipeline, 11 parts of a starting tunnel door and 12 parts of a bolt.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the utility model as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the utility model. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, unless the utility model expressly state otherwise, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
as introduced by the background art, the problem of poor sealing effect at the starting tunnel portal exists in the prior art, and in order to solve the technical problem, the utility model provides a sealing water-stopping device at the starting tunnel portal of a rectangular pipe-jacking tunnel.
In a typical embodiment of the present invention, referring to fig. 1, a sealing and water stopping device for an originating tunnel portal of a rectangular pipe-jacking tunnel includes a support frame, the support frame is connected to an embedded portal frame 2, the support frame is disposed outside the originating portal and higher than the originating portal 11, a first plate and a second member are mounted on a bottom side of the support frame, a distance is set between the first plate and the second member, a pipeline for injecting grease between the first plate and the second member passes through the bottom side of the support frame, a flexible curtain is fixed on a side of the support frame away from the embedded portal frame, and the flexible curtain is bent such that one side of the flexible curtain is located below the support frame.
In the embodiment, the first plate is the spring steel plate 3, and the spring steel plate and the bottom side of the support frame can be welded and connected or fixed in other modes, so that not only can the strength of the spring steel plate be ensured, but also the spring steel plate has set elasticity and is not easy to damage pipe joints;
in order to guarantee the effect of the first block muddy water exosmosis of the first plate, the first plate is close to the pre-buried hole door frame 2 to guarantee the first sealing water stopping effect, the second part is arranged between the first plate and the flexible curtain, the first plate is perpendicular to the bottom side of the support frame, and therefore the first plate can be fully contacted with the jacking pipe to guarantee the first sealing water stopping capacity.
In some specific examples, the second component is a steel brush 4, one end of the steel brush 4 is fixedly connected with the support frame, and the other end of the steel brush 4 is arranged towards the originating tunnel portal, that is, the steel brush 4 is obliquely arranged relative to the bottom side of the support frame towards the originating tunnel portal, the steel brush 4 can be used for being matched with the first plate, and after the pipeline 10 injects grease into the space among the second component, the first plate and the jacking pipe, the steel brush 4 can effectively cut off muddy water; and the steel brush can effectively prevent the tail of the shield tunneling machine from seeping into muddy water in the advancing process of the jacking pipe.
In addition, it should be noted that before the jacking pipe is pushed in, semi-solid grease can be directly applied to the steel brush, so that the semi-solid grease can fill the gap between the steel brush 4.
It should be explained that the support frame has a set length and width, the length of the spring steel plate 3 is the same as the length of the support frame, and the length of the steel brush 4 is the same as the length of the support frame, the length of the spring steel plate being along the width direction of the originating tunnel door, thereby sufficiently covering the working width of the top pipe.
Further, in this embodiment, the bottom side of the supporting frame is provided with an opening, the pipeline is embedded in the main structure 1 around the starting tunnel door, one end of the pipeline 10 is provided with an inlet, the inlet is located on the side surface of the main structure, the other end of the pipeline exceeds the main structure and can penetrate through the supporting frame to be communicated with the opening, and the pipeline is communicated with the opening, so that the water-insoluble grease can be directly pumped into the opening through the pipeline, manual injection is not needed, and the working efficiency is fully improved.
The main structure 1 is a concrete structure, a temporary support is arranged at an originating portal, a concrete structure is poured at the originating portal, an embedded portal frame 2 is embedded in the main structure, the longitudinal section of the embedded portal frame 2 is in an L shape, the embedded portal frame is embedded in the outer side and the inner side of the originating portal, and the embedded portal frame 2 is not only used for being connected with a support frame.
It will be appreciated that the inlet of the conduit 10 can be connected to a pump for pumping grease through the pump to the opening, which is known in the art and will not be described further.
In some examples, the pipeline 10 may be a rigid pipe, and in particular may be a white iron pipe.
Further, one side of the flexible curtain 6 is fixed on one side of the support frame far away from the buried-cave door frame through a fastener.
The outer side of the flexible curtain 6 is provided with a pressing plate 7, the fastening piece penetrates through the pressing plate, one side of the flexible curtain and the support frame, and the pressing plate is arranged on the outer side of the flexible curtain, so that the flexible curtain is not prone to everting.
In this embodiment, the flexible curtain is made of rubber, two sides of the flexible curtain are arranged at an obtuse angle, one side of the flexible curtain is fixed on the outer side of the support frame, the other side of the flexible curtain is arranged towards the originating tunnel portal, a set distance is reserved between the end part of the flexible curtain below the support frame and the steel brush 4 in a natural state, and when the jacking pipe is jacked, one end of the flexible curtain can be in contact with the steel brush 4.
Specifically, in some examples, the fastening members are bolts and nuts, and the bolts transversely penetrate through the inner side of the support frame, namely the box body 5, penetrate through the flexible curtain 6 and the pressing plate 7 and are locked and fixed through the nuts 8; the vertical side of the flexible curtain can be provided with a plurality of threaded holes, and the bolts are installed through the threaded holes with different heights, so that the downward extending length of the flexible curtain can be adjusted; correspondingly, the pressing plate can be provided with a plurality of threaded holes with different heights or provided with a long hole, so that the extension length of the pressing plate exceeding the supporting frame can be conveniently adjusted, and the sealing performance is further ensured.
For one side and the major structure laminating of assurance support frame, the bottom side is the plane, and the support frame is box 5, one side and pre-buried entrance to a cave door frame welded connection of box, and the bottom side of box and pre-buried entrance to a cave door frame's horizontal section parallel and level set up, and box 5 can avoid muddy water to get into the box, produces the condition emergence of leaking through the box.
Wherein, box 5 is two-sided welding with pre-buried hole door frame 2, steel brush 4 to guarantee welded stability and reliability, can play the effect of effective separation muddy water moreover, and sealed respond well.
In this embodiment, referring to fig. 2, the inner side surface of the box 5 is connected to the original tunnel door, specifically, the connection can be realized by bolts 12 and nuts, and the bolts are arranged around the inner side surface of the box for one circle;
in order to ensure that the pressing plate is of an integrated structure, the pressing plate is a folding pressing plate, and the pressing plate can be bent at the corner of the box body.
Wherein, set up vertical gusset 9 in the support frame promptly the box, vertical gusset 9 is perpendicular with the support frame bottom side, and vertical gusset effectively strengthens the support intensity of support frame.
It can be understood that the bottom side of the box 5 is a plane, and the top side is obliquely arranged, that is, the side of the box connected with the flexible curtain is lower than the other side, and the support frame obliquely arranged on the top side is convenient to mount.
According to the sealing water-stopping device provided by the embodiment, when a jacking pipe enters an originating tunnel door, the flexible curtain 6, the spring steel plate 3 and the steel brush 4 are all tightly connected with the pipe joints, the first plate is used as a first seal to effectively prevent muddy water from leaking outwards, and grease can be injected between the second part and the first plate through a pipeline to further block muddy water; the top pipe can contact with the flexible curtain, and the flexible curtain further guarantees sealing performance of the water stopping device through keeping contact with the top pipe.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a sealed watertight fittings of portal department of originating in rectangle push pipe tunnel, a serial communication port, the loach carrying platform comprises a supporting fram, the support frame is connected with pre-buried portal frame, the outside that the portal was originally originated is located to the support frame and is higher than the portal setting of originating, first board and second part are installed to the bottom side of support frame, interval settlement distance between first board and the second part, and be used for to pass the support frame bottom side setting to the pipeline of pouring into grease between first board and the second part, the support frame is kept away from the lateral part of pre-buried portal frame and is fixed with flexible curtain, flexible curtain is buckled and is set up the below that makes one side of flexible curtain be located the support frame.
2. The sealing and water-stopping device at the originating tunnel portal of the rectangular pipe-jacking tunnel according to claim 1, wherein the first plate is a spring steel plate;
the first plate is vertically arranged with the bottom side of the support frame.
3. The sealing and water stopping device at the originating tunnel portal of the rectangular pipe-jacking tunnel according to claim 1, wherein the second component is a steel brush, one end of the steel brush is fixedly connected with the support frame, and the other end of the steel brush is arranged towards the originating tunnel portal, namely the steel brush is obliquely arranged relative to the bottom side of the support frame.
4. The sealing and water stopping device for the starting tunnel portal of the rectangular pipe-jacking tunnel according to claim 1, wherein the bottom side of the supporting frame is provided with an opening, the pipeline is pre-buried in a main structure on the peripheral side of the starting tunnel portal, one end of the pipeline is provided with an inlet, the inlet is positioned on the side surface of the main structure, and the other end of the pipeline exceeds the main structure and can penetrate through the supporting frame to be communicated with the opening.
5. The sealing and water stopping device at the originating tunnel portal of the rectangular pipe-jacking tunnel according to claim 1, wherein one side of the flexible curtain is fixed to one side of the support frame far away from the buried tunnel portal frame through a fastener.
6. The sealing and water stopping device at the originating tunnel portal of the rectangular pipe-jacking tunnel according to claim 5, wherein a pressing plate is arranged at the outer side of the flexible curtain, and the fastening member is arranged by penetrating through the pressing plate, one side of the flexible curtain and the support frame.
7. The sealing and water stopping device for the originating tunnel portal of the rectangular pipe-jacking tunnel according to claim 1, wherein the supporting frame is a box body, and one side of the box body is welded and connected with the door frame of the embedded tunnel.
8. The sealing and water stopping device at the originating tunnel portal of the rectangular pipe-jacking tunnel according to claim 1, wherein vertical rib plates are arranged in the support frame, and the vertical rib plates are perpendicular to the bottom side of the support frame.
9. The sealing and water stopping device at the originating tunnel portal of the rectangular pipe-jacking tunnel according to claim 1, wherein the bottom side of the support frame is set to be a plane, and the top side is obliquely arranged, that is, one side of the support frame connected with the flexible curtain is lower than the other side.
10. The sealing and water stopping device for the originating tunnel portal of the rectangular pipe-jacking tunnel according to claim 1, wherein the longitudinal section of the embedded portal frame is L-shaped, and the embedded portal frame is embedded in the outer side and the inner side of the originating portal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121503889.7U CN215369885U (en) | 2021-07-01 | 2021-07-01 | Sealing and water stopping device at originating tunnel portal of rectangular pipe-jacking tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121503889.7U CN215369885U (en) | 2021-07-01 | 2021-07-01 | Sealing and water stopping device at originating tunnel portal of rectangular pipe-jacking tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215369885U true CN215369885U (en) | 2021-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121503889.7U Active CN215369885U (en) | 2021-07-01 | 2021-07-01 | Sealing and water stopping device at originating tunnel portal of rectangular pipe-jacking tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215369885U (en) |
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2021
- 2021-07-01 CN CN202121503889.7U patent/CN215369885U/en active Active
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