CN114033488B - Suspension bridge tunnel anchor drainage system - Google Patents
Suspension bridge tunnel anchor drainage system Download PDFInfo
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- CN114033488B CN114033488B CN202111396619.5A CN202111396619A CN114033488B CN 114033488 B CN114033488 B CN 114033488B CN 202111396619 A CN202111396619 A CN 202111396619A CN 114033488 B CN114033488 B CN 114033488B
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- tunnel
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- 239000000725 suspension Substances 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 72
- 230000008595 infiltration Effects 0.000 claims description 45
- 238000001764 infiltration Methods 0.000 claims description 45
- 229910001018 Cast iron Inorganic materials 0.000 claims description 5
- 230000005484 gravity Effects 0.000 abstract description 3
- 238000012876 topography Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 238000001914 filtration Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
- E21F16/02—Drainage of tunnels
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a suspension bridge tunnel anchor drainage system, wherein the bottom of the lower end of a front anchor chamber of a tunnel anchor is provided with a front anchor chamber water collecting well capable of storing front anchor chamber water, the bottom of the lower end of a rear anchor chamber of the tunnel anchor is provided with a rear anchor chamber water collecting well capable of storing tunnel anchor water, the middle bottom of an anchor plug body is provided with a hard longitudinal drain pipe, the inlet end of the longitudinal drain pipe is positioned at the bottom of the front anchor chamber water collecting well, the outlet end of the longitudinal drain pipe is positioned at the lower end of the anchor plug body, the system further comprises a vertical drain pipe, the inlet end of the vertical drain pipe is positioned at the bottom of the rear anchor chamber water collecting well, and the outlet end of the vertical drain pipe is connected with the tunnel drainage system; the drainage system reasonably utilizes the characteristics of tunnel anchor topography conditions and the multi-arch tunnel below, utilizes gravity to drain water in the tunnel anchor, has low operation cost, is not easy to fail, is little affected by terrain, and is easy to construct.
Description
Technical Field
The invention relates to the technical field of suspension bridge tunnel anchor engineering, in particular to a suspension bridge tunnel anchor drainage system.
Background
The tunnel anchorage of the suspension bridge is generally inclined in surrounding rock, a tunnel for connecting the suspension bridge is arranged below the tunnel anchorage, and the drainage method of the tunnel anchorage is mainly two, namely mechanical drainage is realized, namely, accumulated water in a tunnel anchorage chamber is pumped out of the chamber through a high-power water pump, but the tunnel anchorage is generally tens of meters or even hundreds of meters, so that the depth of the chamber is deeper, the inclination angle is larger, accumulated water is easy to occur at the bottom of the anchor chamber, a pump with higher power is required during drainage, and special personnel are required for nursing and maintenance, so that the method is time-consuming and labor-consuming, high in cost and easy to cause faults. The other is that a drainage channel is excavated in the rear anchor chamber to the ground, accumulated water in the cavity is drained to the ground through the drainage channel, but the mountain terrain where the tunnel anchor is located is complex, and the rear anchor chamber is located on the ground, so that the method is greatly influenced by the terrain, the cross-sectional area of the method is small, the construction difficulty is large, and the method is easy to block.
Disclosure of Invention
Therefore, the invention aims to provide a suspension bridge tunnel anchor drainage system which is low in drainage cost, difficult to fail, time-saving and labor-saving in use, small in influence of terrain, easy to construct and basically free from blockage.
The invention aims at realizing the following technical scheme:
The utility model provides a suspension bridge tunnel anchor drainage system, anchor room low-end bottom is equipped with the preceding anchor room sump pit that can deposit preceding anchor room ponding before the tunnel anchor, and anchor room low-end bottom is equipped with the back anchor room sump pit that can deposit tunnel anchor ponding after the tunnel anchor, the anchor cock body middle bottom is provided with the vertical drain pipe of stereoplasm, the entry end of vertical drain pipe is located preceding anchor room sump pit bottom, exit end is located the anchor cock body low end, the system still includes vertical drainage pipe, vertical drainage pipe entry end is located back anchor room sump pit bottom, exit end and tunnel drainage system link to each other.
Further, preceding anchor room ponding is collected by preceding anchor room circumferential direction infiltration blind pipe, preceding anchor room longitudinal direction infiltration blind pipe, preceding anchor room lateral direction infiltration blind pipe and preceding anchor room lateral drainage ditch, preceding anchor room circumferential direction infiltration blind pipe sets up in preceding anchor room wall, preceding anchor room longitudinal direction infiltration blind pipe is two and sets up respectively in preceding anchor room both sides corner, preceding anchor room lateral direction infiltration blind pipe sets up in preceding anchor room low end bottom transversal direction, preceding anchor room circumferential direction infiltration blind pipe both ends link to each other with two preceding anchor room longitudinal direction infiltration blind pipes respectively, preceding anchor room longitudinal direction infiltration blind pipe one end is sealed, the other end links to each other with preceding anchor room lateral direction infiltration blind pipe, preceding anchor room lateral direction infiltration blind pipe other end is connected to preceding anchor room sump pit in, preceding anchor room lateral direction drainage ditch sets up in preceding anchor room low end bottom transversal direction and links to each other with preceding anchor room sump pit.
Furthermore, the front anchor chamber is provided with a plurality of annular seepage blind pipes which are uniformly arranged at intervals along the longitudinal direction of the front anchor chamber.
Further, the bottom surface of the front anchor chamber transverse drainage ditch is a slope surface, and the water collecting well end of the front anchor chamber is a low end
Furthermore, the front anchor chamber annular drainage blind pipe is a soft plastic water filtering pipe, and the front anchor chamber longitudinal drainage blind pipe and the front anchor chamber transverse drainage blind pipe are spring hoses.
Further, tunnel anchor ponding is collected by back anchor room circumferential direction infiltration blind pipe, back anchor room longitudinal direction infiltration blind pipe, back anchor room lateral direction infiltration blind pipe and back anchor room lateral direction escape canal, back anchor room circumferential direction infiltration blind pipe sets up in back anchor room wall, back anchor room longitudinal direction infiltration blind pipe is two and sets up respectively in back anchor room both sides corner, back anchor room lateral direction infiltration blind pipe sets up in back anchor room low end bottom transversal direction, back anchor room circumferential direction infiltration blind pipe both ends link to each other with two back anchor room longitudinal direction infiltration blind pipes respectively, back anchor room longitudinal direction infiltration blind pipe one end is sealed, the other end links to each other with back anchor room lateral direction infiltration blind pipe, back anchor room lateral direction infiltration blind pipe other end is connected to back anchor room sump pit in, back anchor room lateral direction escape canal sets up in back anchor room low end bottom transversal direction and links to each other with back anchor room sump pit.
Further, the bottom surface of the rear anchor chamber transverse drainage ditch is a slope surface, and the water collecting well end of the rear anchor chamber is a low end.
Further, the outlet end of the vertical drain pipe is positioned in a drain chamber beside the tunnel and connected with a transverse drain pipe of the tunnel, and the other end of the transverse drain pipe of the tunnel is connected into a side ditch of the tunnel.
Furthermore, the rear anchor chamber annular drainage blind pipe is a soft plastic water filtering pipe, and the rear anchor chamber longitudinal drainage blind pipe and the rear anchor chamber transverse drainage blind pipe are spring hoses.
Still further, the vertical drain pipe is cast iron pipe, the vertical drain pipe is the spring hose.
The beneficial effects of the invention are as follows:
According to the drainage system for the tunnel anchors of the suspension bridge, the collected accumulated water in the front anchor chamber is stored by arranging the front anchor chamber water collecting well, accumulated water in the front anchor chamber water collecting well is drained to the lower end of the anchor plug body by arranging the longitudinal drain pipe and then freely flows into the rear anchor chamber water collecting well, accumulated water in the whole tunnel anchors collected by storing of the rear anchor chamber water collecting well is finally drained to the tunnel drainage system through the vertical drain pipe, the drainage system reasonably utilizes the characteristics of tunnel anchor topography conditions and the lower multi-arch tunnel, and the drainage system utilizes gravity to drain water in the tunnel anchors, so that the drainage system is low in operation cost, difficult to fail, small in influence of topography and easy to construct.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objects and other advantages of the invention may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.
Drawings
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings, in which:
fig. 1 is a perspective view of the present invention.
Fig. 2 is a front view of the present invention.
Fig. 3 is a right side view of the present invention.
Fig. 4 is A-A view of fig. 2.
Fig. 5 is a view B-B of fig. 2.
Fig. 6 is a schematic structural diagram of a tunnel drainage system.
Fig. 7 is a front view of the arrangement of the drain pipe grating cover on the vertical drain pipe in fig. 1.
Fig. 8 is a front cross-sectional view of the drain grating cover of fig. 1.
Fig. 9 is a top view of the drain grating cover of fig. 1.
In the figure: front anchor chamber 1, front anchor chamber circumferential water seepage blind pipe 101, front anchor chamber longitudinal water seepage blind pipe 102, front anchor chamber transverse water seepage blind pipe 103, front anchor chamber transverse drainage ditch 104, front anchor chamber water collecting well 105, anchor plug body 2, rear anchor chamber 3, rear anchor chamber circumferential water seepage blind pipe 301, rear anchor chamber longitudinal water seepage blind pipe 302, rear anchor chamber transverse water seepage blind pipe 303, rear anchor chamber transverse drainage ditch 304, rear anchor chamber water collecting well 305, longitudinal drainage pipe 4, vertical drainage pipe 5, drainage pipe grid cover 501, drainage chamber 6, tunnel 7, tunnel transverse drainage pipe 8, tunnel side ditch 9, transverse drainage pipe 10, and central drainage ditch 11.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are presented by way of illustration only and not by way of limitation.
As shown in fig. 1-9, a drainage system for a suspension bridge tunnel anchor is provided, wherein a front anchor chamber water collecting well 105 capable of storing water in the front anchor chamber 1 is arranged at the bottom of the lower end of a front anchor chamber 1 of the tunnel anchor, a rear anchor chamber water collecting well 305 capable of storing water in the tunnel anchor is arranged at the bottom of the lower end of a rear anchor chamber 3 of the tunnel anchor, a hard longitudinal drain pipe 4 is arranged at the middle bottom of an anchor plug body 2, preferably, the hard longitudinal drain pipe 4 is a cast iron pipe, sufficient rigidity is ensured to resist the pressure of the anchor plug body, temporary plugging measures are adopted at a cast iron pipe orifice in the construction period to prevent casting concrete from plugging the pipe orifice, the inlet end of the longitudinal drain pipe 4 is positioned at the bottom of the front anchor chamber water collecting well 105, the outlet end of the longitudinal drain pipe 4 is positioned at the lower end of the anchor plug body 2, the system further comprises a vertical drain pipe 5, and the inlet end of the vertical drain pipe 5 is positioned at the bottom of the rear anchor chamber water collecting well 305, and the outlet end of the vertical drain pipe 5 is connected with the tunnel drainage system.
The front anchor chamber 1 ponding is collected by front anchor chamber circumferential seepage blind pipe 101, front anchor chamber longitudinal seepage blind pipe 102, front anchor chamber transverse seepage blind pipe 103 and front anchor chamber transverse drainage ditch 104, front anchor chamber circumferential seepage blind pipe 101 sets up in front anchor chamber 1 wall between primary support and the secondary lining, front anchor chamber longitudinal seepage blind pipe 102 is two and sets up respectively in front anchor chamber 1 both sides corner, front anchor chamber transverse seepage blind pipe 103 sets up in front anchor chamber 1 bottom transversal direction, front anchor chamber circumferential seepage blind pipe 101 both ends link to each other with two front anchor chamber longitudinal seepage blind pipe 102 respectively, front anchor chamber longitudinal seepage blind pipe 102 one end is sealed, the other end links to each other with front anchor chamber transverse seepage blind pipe 103, front anchor chamber transverse seepage blind pipe 103 other end is connected to front anchor chamber water collecting well 105, front anchor chamber transverse drainage ditch 104 sets up in front anchor chamber 1 bottom transversal direction and links to front anchor chamber water collecting well 105.
The front anchor chamber annular seepage blind pipes 1 are multiple and are uniformly arranged at intervals of 5m along the longitudinal direction of the front anchor chamber.
The bottom surface of the front anchor chamber transverse drainage ditch 104 is a slope, the end of the front anchor chamber water collecting well 105 is a low end, the slope gradient is 1%, and accumulated water is conveniently collected to the front anchor chamber water collecting well.
The front anchor chamber circumferential drainage blind pipe 101 is a soft plastic water filtering pipe, and the front anchor chamber longitudinal drainage blind pipe 102 and the front anchor chamber transverse drainage blind pipe 103 are spring hoses so as to prevent the drainage blind pipe from being broken due to tunnel anchor deformation.
The tunnel anchor ponding is collected by back anchor room ring direction infiltration blind pipe 301, back anchor room longitudinal infiltration blind pipe 302, back anchor room lateral seepage blind pipe 303 and back anchor room lateral drainage ditch 304, back anchor room ring direction infiltration blind pipe 301 sets up in back anchor room 3 wall body between primary support and the secondary lining, back anchor room longitudinal seepage blind pipe 303 is two and set up respectively in back anchor room 3 both sides corner, back anchor room lateral seepage blind pipe 303 sets up in back anchor room 3 bottom transversal direction, back anchor room ring direction infiltration blind pipe 301 both ends link to each other with two back anchor room longitudinal seepage blind pipes 302, back anchor room longitudinal seepage blind pipe 302 one end is sealed, the other end links to each other with back anchor room lateral seepage blind pipe 303, back anchor room lateral seepage blind pipe 303 other end is connected to back anchor room sump 305, back anchor room lateral drainage ditch 304 sets up in back anchor room 3 bottom transversal direction and links to each other with back anchor room sump 305.
The bottom surface of the rear anchor chamber transverse drain 304 is a slope and the end of the rear anchor chamber water collecting well 305 is a low end, the slope gradient is 1%, so that accumulated water can be conveniently gathered into the rear anchor chamber water collecting well.
The outlet end of the vertical drainage pipe 5 is positioned in a drainage chamber 6 beside the tunnel 7 and is connected with a tunnel transverse drain pipe 8, the other end of the tunnel transverse drain pipe 8 is connected into a tunnel side ditch 9, water in the tunnel side ditch 9 is communicated with a central drain ditch 11 through a transverse drain pipe 10 to realize drainage, the tunnel side ditch 9, the transverse drain pipe 10 and the central drain ditch 11 are the existing tunnel drainage systems, the drainage chamber 6 is a chamber in the direction of a vertical tunnel side wall, and the vertical drainage pipe 5 can be checked and maintained through the chamber to ensure that the vertical drainage pipe can normally drain.
The rear anchor chamber circumferential drainage blind pipe 301 is a soft plastic water filter pipe, and the rear anchor chamber longitudinal drainage blind pipe 302 and the rear anchor chamber transverse drainage blind pipe 303 are spring hoses.
Because the tunnel anchor is deformed obliquely upwards due to the stress characteristic of the tunnel anchor, and the tunnel is deformed downwards due to gravity, the vertical water drain pipe can bear tensile bending force, the water drain pipe is required to have certain deformation performance, water leakage caused by pipeline fracture is prevented, and the vertical water drain pipe 5 is a spring hose.
The inlet end of the vertical drain pipe 5 is provided with a drain pipe grid cover 501, and the drain pipe grid cover 501 is provided with a filter screen to prevent some dregs such as sand and stones from entering the vertical drain pipe 5 along with accumulated water to cause blockage.
The drainage system has the following beneficial effects:
1. The annular, longitudinal and transverse water seepage blind pipes fully gather water in the lining of the tunnel anchor to the water collecting well, so that the tunnel anchor is guaranteed to be in a dry environment, normal use of the tunnel anchor is facilitated, and the service life is prolonged.
2. The transverse drainage ditches of the front anchor chamber and the rear anchor chamber are provided with a certain gradient to the water collecting well, so that natural accumulation of accumulated water is facilitated, and the accumulated water is discharged through the water collecting well.
3. The longitudinal drain pipe in the anchor plug body can drain accumulated water in the front anchor chamber to the rear anchor chamber, and cast iron materials are adopted to ensure that the longitudinal drain pipe has enough rigidity to bear the pressure of the anchor plug body.
4. The arrangement of the vertical drain pipe grid cover and the filter screen can effectively isolate some larger sand and stone and prevent the pipeline from being blocked; and the spring hose material is adopted, so that the deformation performance of the pipe can be provided, and the pipe is ensured not to be damaged under the deformation influence of the tunnel anchor and the tunnel below.
5. The arrangement of the tunnel side drainage chamber can facilitate people to enter the tunnel side drainage chamber to check whether the drainage system is normal or not, and later operation is convenient to manage and maintain.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the present invention, which is intended to be covered by the claims of the present invention.
Claims (9)
1. A suspension bridge tunnel anchor drainage system, characterized in that: the bottom of the lower end of the front anchor chamber (1) of the tunnel anchor is provided with a front anchor chamber water collecting well (105) capable of storing water in the front anchor chamber (1), the bottom of the lower end of the rear anchor chamber (3) of the tunnel anchor is provided with a rear anchor chamber water collecting well (305) capable of storing water in the tunnel anchor, the middle bottom of the anchor plug body (2) is provided with a hard longitudinal drain pipe (4), the inlet end of the longitudinal drain pipe (4) is positioned at the bottom of the front anchor chamber water collecting well (105), the outlet end of the longitudinal drain pipe is positioned at the lower end of the anchor plug body (2), the system further comprises a vertical drain pipe (5), and the inlet end of the vertical drain pipe (5) is positioned at the bottom of the rear anchor chamber water collecting well (305) and the outlet end of the vertical drain pipe is connected with a tunnel drain system; front anchor room (1) ponding is collected by front anchor room circumferential direction infiltration blind pipe (101), front anchor room longitudinal direction infiltration blind pipe (102), front anchor room lateral direction infiltration blind pipe (103) and front anchor room lateral direction escape canal (104), front anchor room circumferential direction infiltration blind pipe (101) set up in front anchor room (1) wall, front anchor room longitudinal direction infiltration blind pipe (102) are two and set up respectively in front anchor room (1) both sides corner, front anchor room lateral direction infiltration blind pipe (103) set up in front anchor room (1) low end bottom transversely, front anchor room circumferential direction infiltration blind pipe (101) both ends link to each other with two front anchor room longitudinal direction infiltration blind pipes (102) respectively, front anchor room longitudinal direction infiltration blind pipe (102) one end is sealed, the other end links to each other with front anchor room lateral direction seepage blind pipe (103), front anchor room lateral direction blind pipe (103) other end is connected to in front anchor room sump (105), front anchor room lateral direction escape canal (104) set up in front anchor room (1) low end bottom transversely and link to each other with front anchor room (105).
2. A suspension bridge tunnel anchor drainage system according to claim 1, wherein: the front anchor chamber is provided with a plurality of annular water seepage blind pipes (1) which are uniformly arranged at intervals along the longitudinal direction of the front anchor chamber.
3. A suspension bridge tunnel anchor drainage system according to claim 1, wherein: the bottom surface of the front anchor chamber transverse drainage ditch (104) is a slope surface, and the end of the front anchor chamber water collecting well (105) is a low end.
4. A suspension bridge tunnel anchor drainage system according to claim 1, wherein: the front anchor chamber circumferential drainage blind pipe (101) is a soft plastic filter pipe, and the front anchor chamber longitudinal drainage blind pipe (102) and the front anchor chamber transverse drainage blind pipe (103) are spring hoses.
5. A suspension bridge tunnel anchor drainage system according to claim 1, wherein: the tunnel anchor ponding is collected by back anchor room circumferential direction infiltration blind pipe (301), back anchor room longitudinal direction infiltration blind pipe (302), back anchor room lateral direction infiltration blind pipe (303) and back anchor room lateral direction escape canal (304), back anchor room circumferential direction infiltration blind pipe (301) set up in back anchor room (3) wall, back anchor room longitudinal direction infiltration blind pipe (303) are two and set up respectively in back anchor room (3) both sides corner, back anchor room lateral direction infiltration blind pipe (303) set up in back anchor room (3) low end bottom transversal direction, back anchor room circumferential direction infiltration blind pipe (301) both ends link to each other with two back anchor room longitudinal direction infiltration blind pipes (302) respectively, back anchor room longitudinal direction infiltration blind pipe (302) one end is sealed, the other end links to each other with back anchor room lateral direction infiltration blind pipe (303), back anchor room lateral direction blind pipe (303) other end is connected to in back anchor room well (305), back anchor room lateral direction escape canal (304) set up in back anchor room (3) low end transversal direction escape canal (305) and link to each other with back water collecting chamber lateral direction.
6. A suspension bridge tunnel anchor drainage system as claimed in claim 5 wherein: the bottom surface of the rear anchor chamber transverse drainage ditch (304) is a slope surface, and the end of the rear anchor chamber water collecting well (305) is a low end.
7. A suspension bridge tunnel anchor drainage system as claimed in claim 5 wherein: the outlet end of the vertical drain pipe (5) is positioned in a drain chamber (6) beside the tunnel (7) and is connected with a tunnel transverse drain pipe (8), and the other end of the tunnel transverse drain pipe (8) is connected into a tunnel side ditch (9).
8. A suspension bridge tunnel anchor drainage system as claimed in claim 5 wherein: the rear anchor chamber circumferential drainage blind pipe (301) is a soft plastic water filter pipe, and the rear anchor chamber longitudinal drainage blind pipe (302) and the rear anchor chamber transverse drainage blind pipe (303) are spring hoses.
9. A suspension bridge tunnel anchor drainage system according to any of claims 1 to 8, wherein: the vertical drain pipe (4) is a cast iron pipe, the vertical drain pipe (5) is a spring hose, a drain pipe grid cover (501) is arranged at the inlet end of the vertical drain pipe (5), and a filter screen is arranged on the drain pipe grid cover (501).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111396619.5A CN114033488B (en) | 2021-11-23 | 2021-11-23 | Suspension bridge tunnel anchor drainage system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111396619.5A CN114033488B (en) | 2021-11-23 | 2021-11-23 | Suspension bridge tunnel anchor drainage system |
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| CN114033488A CN114033488A (en) | 2022-02-11 |
| CN114033488B true CN114033488B (en) | 2024-05-07 |
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| CN114033488A (en) | 2022-02-11 |
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