CN117267507A - Large-caliber water supply pipeline emptying facility in shield tunnel - Google Patents
Large-caliber water supply pipeline emptying facility in shield tunnel Download PDFInfo
- Publication number
- CN117267507A CN117267507A CN202311398895.4A CN202311398895A CN117267507A CN 117267507 A CN117267507 A CN 117267507A CN 202311398895 A CN202311398895 A CN 202311398895A CN 117267507 A CN117267507 A CN 117267507A
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- China
- Prior art keywords
- emptying
- water supply
- water
- pipeline
- shield tunnel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 187
- 239000002351 wastewater Substances 0.000 claims abstract description 32
- 238000005086 pumping Methods 0.000 claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 238000012423 maintenance Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 239000004429 Calibre Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- 238000003911 water pollution Methods 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/07—Arrangement or mounting of devices, e.g. valves, for venting or aerating or draining
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a large-caliber water supply pipeline emptying facility in a shield tunnel; comprises a drain pipeline, a plurality of drain pumps and a water lifting pipeline; the water supply cabin of the shield tunnel is provided with a water supply pipeline, and the equipment cabin is provided with all emptying pumps; the height of the water inlet of each emptying pump is not higher than that of the water supply pipeline; the emptying pipeline comprises an emptying main pipe and a water outlet branch pipe; the emptying main pipe is arranged in the water supply cabin and is communicated with the water supply pipeline through the emptying pipeline; each water outlet branch pipe is arranged at the bottom of the shield tunnel, one end of each water outlet branch pipe is connected with the corresponding emptying main pipe, and the other end of each water outlet branch pipe is connected with the inlet of the corresponding emptying pump; the water pumping pipeline comprises water pumping branch pipes, the number of which is matched with that of the emptying pumps, and a water pumping main pipe; one end of each water pumping branch pipe is connected with the outlet of the corresponding emptying pump, and the other end is connected with the water pumping main pipe; the water lifting main pipe is connected with a tunnel waste water pump room of the shield tunnel. The invention efficiently, economically and safely solves the problem of emptying when the large-caliber water supply pipeline in the tunnel needs to be overhauled.
Description
Technical Field
The invention relates to the technical field of construction of water pipes in shield tunnels, in particular to a large-caliber water supply pipeline emptying facility in a shield tunnel.
Background
The upper part of the ultra-large diameter circular shield tunnel is a vehicle space, and the lower part is provided with various tunnel self-use facilities, such as a maintenance channel, self-use strong and weak current pipelines, a power transformation and distribution room, a waste water pump room and the like, and also has more surplus space. The large-caliber water supply pipeline is laid in the tunnel, a safe and convenient cross-sea or river-crossing channel is provided for the water supply pipeline, and the economic and social benefits of tunnel engineering can be better realized.
In order to better ensure the safety of laying the water supply pipeline in the tunnel and the requirement of matching with the pipeline maintenance, a emptying facility is required to be arranged in the water supply cabin of the tunnel in a matching way.
Usually, a large-caliber water supply pipeline which is laid in an exposed way in the comprehensive pipe gallery is provided with a water drain valve at a low point of the pipeline, and the water drain valve is matched with a pipe gallery wastewater drainage system to drain water. For comparatively ripe utility tunnel inner water supply pipeline sluicing facility, shield tunnel inner heavy-calibre water supply pipeline's sluicing system has following characteristics:
(1) The water supply pipeline is laid along with the shield tunnel, the distance is long, the low points are few, the air leakage is convenient for maintenance and air leakage, the air leakage time is shortened, and reasonable segmentation is necessary through the arrangement of valves.
(2) The drainage is carried out by means of the tunnel drainage system, the matching between the drainage flow and the drainage system flow is considered, and meanwhile, the emergency drainage requirement is considered.
(3) The space at the lower part of the tunnel is relatively narrow, the arrangement space of the emptying pipeline and the pump station is limited, and the connection with various equipment facilities at the lower part of the tunnel is needed to be made.
Therefore, in order to ensure the safety of the operation of the pipeline and to facilitate the maintenance, how to safely, reliably, conveniently and rapidly empty the water supply pipeline in the shield tunnel is a technical problem to be solved by the person skilled in the art.
Disclosure of Invention
In view of the defects in the prior art, the invention provides a large-caliber water supply pipeline emptying facility in a shield tunnel, and aims to efficiently, economically and safely solve the emptying problem when the large-caliber water supply pipeline in the tunnel needs to be overhauled.
In order to achieve the purpose, the invention discloses a large-caliber water supply pipeline emptying facility in a shield tunnel; a water supply pipeline is arranged in the shield tunnel; and before the water supply pipeline is overhauled, draining the water in the water supply pipeline through a draining facility.
Wherein the emptying facility comprises an emptying pipeline, a plurality of emptying pumps and a water lifting pipeline;
two sides of the shield tunnel, which are close to the bottom, are respectively provided with a water supply cabin and an equipment cabin which extend along the length direction; wherein, the water supply cabin on one side is provided with the water supply pipeline, and the overhaul platform of the equipment cabin on the other side is provided with all the emptying pumps at intervals along the length direction;
the height of the water inlet of each emptying pump is not higher than that of the water supply pipeline;
the emptying pipeline comprises an emptying main pipe and water outlet branch pipes, and the number of the water outlet branch pipes is matched with that of the emptying pumps;
the emptying main pipe is arranged in the water supply cabin, is parallel to the water supply pipeline and is communicated with the water supply pipeline through the emptying pipeline;
each water outlet branch pipe is arranged at the bottom of the shield tunnel, one end of each water outlet branch pipe is connected with the corresponding emptying main pipe, and the other end of each water outlet branch pipe is connected with the inlet of the corresponding emptying pump;
the pumping pipeline comprises pumping branch pipes and pumping main pipes, wherein the number of pumping branch pipes are matched with that of the emptying pump;
one end of each water pumping branch pipe is connected with the outlet of the corresponding emptying pump, and the other end of each water pumping branch pipe is connected with the water pumping main pipe;
and the water lifting main pipe is connected with a tunnel wastewater pump room of the shield tunnel.
Preferably, each water outlet branch pipe is made of welded steel, the shape of each water outlet branch pipe is matched with the concave shape of the bottom of the shield tunnel, and the water outlet branch pipes are buried in a cushion layer at the bottom of the shield tunnel.
Preferably, the water supply pipeline is a welded steel pipe, the working wells at two ends of the shield tunnel enter the shield tunnel, and the matched auxiliary facilities comprise a bracket and a buttress.
Preferably, the two limiting retractors are symmetrically arranged on the emptying main pipe.
Preferably, a water inlet valve is arranged on a drain pipeline which is communicated with the water supply pipeline;
the emptying main pipe is positioned obliquely below the water supply pipeline, so that the emptying pipeline forms an included angle of 45 degrees with the horizontal plane.
Preferably, the water supply pipeline is divided into a plurality of emptying sections of 800 meters to 1000 meters by a manual/electric butterfly valve;
each emptying section is provided with one emptying facility.
Preferably, each water lifting branch pipe is provided with a check valve and a gate valve.
Preferably, all of the evacuation pumps are divided into at least two groups; the plurality of the emptying pumps of each group are provided with one water pumping pipeline.
Preferably, the water lifting main pipe of each water lifting pipeline is provided with a backflow preventer.
Preferably, the tunnel wastewater pump house is provided with a plurality of wastewater pumps and wastewater drainage pipelines, and internal water is discharged through the plurality of wastewater pumps and the wastewater drainage pipelines.
The invention has the beneficial effects that:
the invention efficiently, economically and safely solves the problem of emptying when the large-caliber water supply pipeline in the tunnel needs to be overhauled.
The conception, specific structure, and technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, features, and effects of the present invention.
Drawings
FIG. 1 is a schematic view showing a connection structure of a water supply pipe according to an embodiment of the present invention.
Fig. 2 shows a schematic structural diagram of a cross section of a shield tunnel in an embodiment of the invention.
Fig. 3 shows a schematic structural view of a venting facility in an embodiment of the invention.
Detailed Description
Examples
1-3, a large-caliber water supply pipeline emptying facility in the shield tunnel is provided; a water supply pipeline 1 is arranged in the shield tunnel; before the water supply pipe 1 is overhauled, water in the water supply pipe 1 is drained through the draining facility 2.
Wherein the emptying device 2 comprises an emptying pipeline, a plurality of emptying pumps 24 and a water raising pipeline 27;
two sides of the shield tunnel, which are close to the bottom, are respectively provided with a water supply cabin and an equipment cabin which extend along the length direction; wherein, the water supply cabin on one side is provided with a water supply pipeline 1, and the overhaul platform of the equipment cabin on the other side is provided with all emptying pumps 24 at intervals along the length direction;
the height of the water inlet of each emptying pump 24 is not higher than that of the water supply pipeline 1;
the emptying pipeline comprises an emptying main pipe 22 and water outlet branch pipes 23, the number of which is matched with that of the emptying pumps 24;
the emptying main pipe 22 is arranged in the water supply cabin, is arranged in parallel with the water supply pipeline 1 and is communicated with the water supply pipeline 1 through the emptying pipeline;
each water outlet branch pipe 23 is arranged at the bottom of the shield tunnel, one end of each water outlet branch pipe is connected with the corresponding emptying main pipe 22, and the other end of each water outlet branch pipe is connected with the inlet of the corresponding emptying pump 24;
the pumping line 27 includes pumping branches, the number of which is matched with that of the drain pump 24, and pumping manifolds;
one end of each pumping branch pipe is connected with the outlet of the corresponding emptying pump 24, and the other end is connected with the pumping main pipe;
the water lifting main pipe is connected with a tunnel waste water pump room 5 of the shield tunnel.
In practical application, the main emptying pipe 22 and the water supply pipeline 1 are arranged in a water supply cabin at the lower layer of the shield tunnel, and the emptying pump 24 is arranged at the position of an opposite equipment cabin maintenance platform and is close to the tunnel low-point wastewater pump house 5.
Each of the evacuation pumps 24 may be provided with a hook to facilitate lifting and transport of the apparatus.
In some embodiments, each water outlet branch pipe 23 is welded steel, and the profile of the water outlet branch pipe is matched with the concave shape of the bottom of the shield tunnel, and is embedded in a cushion layer of the bottom of the shield tunnel.
In practical application, for adapting to the tunnel section form, the water outlet branch pipe 23 of the emptying assembly 2 adopts welded steel pipes, can be welded in an arc shape according to the tunnel section form, is buried in a cushion layer at the lower part of the tunnel, and is adapted to the arc shape at the bottom of the tunnel.
Each emptying branch pipe 23 adopts welded steel pipes, and is laid in a concrete cushion layer in an arc shape to adapt to the lower space of the shield tunnel.
In some embodiments, the water supply pipeline 1 is a welded steel pipe, and enters the shield tunnel from the working wells 4 at the two ends of the shield tunnel, and the matched auxiliary facilities comprise a bracket and a buttress;
in some embodiments, two limit retractors are symmetrically positioned on the dump main tube 22.
In practical application, the limiting telescopic device can avoid the situation that the water supply pipeline 1 pulls out the emptying facility 2 when sliding in the longitudinal direction of the tunnel, so as to damage the emptying system.
In some embodiments, a water inlet valve 21 is arranged on a drain pipe of which the drain main pipe 22 is communicated with the water supply pipe 1;
the main emptying pipe 22 is positioned obliquely below the water supply pipeline 1, so that the emptying pipeline forms an included angle of 45 degrees with the horizontal plane.
The main emptying pipe 22 is positioned obliquely below the water supply pipeline 1, and the inclination angle is about 45 degrees.
Each of the emptying branches 23 is connected from the lower part of the emptying main pipe 22, so that the complete emptying of the pipeline can be realized.
In certain embodiments, the water supply pipeline 1 is divided into a plurality of 800-1000 meter emptying sections by a manual and electric butterfly valve 3;
each emptying section is provided with an emptying device 2.
In some embodiments, each of the lifting branches is provided with a check valve 25 and a gate valve 26.
In certain embodiments, all of the evacuation pumps 24 are divided into a minimum of two groups; each set of a plurality of evacuation pumps 24 is provided with a pumping line 27.
In some embodiments, the water header of each water lifting pipe 27 is provided with a backflow preventer 28.
In practical application, the check valve 25 and the gate valve 26 are arranged on the water outlet pipe of each emptying pump 24, and the backflow preventer 28 is arranged on the water lifting pipe of the emptying pump, so that water pollution can be avoided.
In some embodiments, the tunnel wastewater pump house 5 is provided with a plurality of wastewater pumps 51 and wastewater drain lines 52, and internal water is discharged through the plurality of wastewater pumps 51 and wastewater drain lines 52.
Under the normal working condition, the water supply pipeline 1 is normally connected with water, the manual and electric butterfly valve 3 of the water supply pipeline 1 is in an open state, and the water inlet valve 21 of the emptying facility 2 is in a closed state.
When the water supply pipeline 1 needs to be emptied, the manual and electric butterfly valve 3 of the emptying section of the water supply pipeline 1 needs to be emptied is closed by remote control or on-site manual operation, and the water supply pipeline 1 stops water delivery.
Opening the water inlet valve 21, and automatically feeding tap water in the pipe into the emptying pump 24; after the emptying pump 24 is started, the water quantity stored in the corresponding emptying section is lifted to the tunnel waste water pump room 5, and is lifted by the waste water pump 51 arranged in the tunnel waste water pump room 5 and then is discharged out of the tunnel through the tunnel waste water drainage pipeline 52.
Typically, 6 emptying pumps 24 can be provided and are divided into two groups, 3 emptying pumps 24 in each group are used for one purpose, and emptying water is respectively lifted to the tunnel waste water pump house 5 through two water lifting pipelines 27.
The 6 emptying pumps 24 are arranged as two relatively independent pump sets, so that the safe operation of the emptying system can be better ensured, and the reduction of the total water delivery capacity of the system caused by excessive parallel water pumps on a single water lifting pipe can be avoided.
The manual-electric butterfly valve 3 can be controlled remotely or manually in situ at a control center, when the water supply main pipe 1 needs to be emptied, the corresponding manual-electric butterfly valve 3 on the water supply main pipe 1 is closed according to the requirement, and the water inlet valve 21 arranged in the emptying state is opened, so that the switching from the normal water delivery working condition to the water drainage working condition is realized.
After the emptying is started, the emptying pump 24 starts to feed water, and the emptying pump 24 is started to lift the emptying water to the tunnel wastewater pump house 5. The water level of the water collecting pool of the tunnel waste water pump room 5 gradually rises to the water level of the waste water pump 51, and the waste water pump 51 starts to drain water outside the tunnel, so that the drained water is discharged outside the tunnel.
The pipe diameter of the emptying main pipe 22 is about 1/3 of the water supply pipe 1, and the emptying time is about 2 to 5 hours according to different emptying pipe sections.
The main pipe 22 is divided into 6 branch pipes 23, and 6 pumps 24 are correspondingly arranged.
The total drainage capacity of all the drainage pumps 24 is the same as that of the tunnel wastewater pump house 5, is about 120L/s, and can realize the drainage of the water supply main pipe economically and efficiently.
All control signals of the electric valves are connected into a tunnel management center, and the management center can monitor the running states of the water supply main pipe and the emptying facility 2 in real time.
In order to further ensure the operation safety of the emptying device 2 and avoid the reduction of the emptying flow caused by the large number of water pumps connected in parallel, the plurality of emptying pumps 24 are arranged into two relatively independent pump sets, and when the water level of the main water supply pipe is reduced below the lowest operation water level of the emptying pump sets, the emptying pump station stops working. And a small amount of water remained in the main pipe is discharged by draining through a water leakage discharging system arranged in the tunnel main body engineering.
The foregoing describes in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (10)
1. A large-caliber water supply pipeline emptying facility in the shield tunnel; a water supply pipeline (1) is arranged in the shield tunnel; draining water in the water supply pipeline (1) through a draining facility (2) before the water supply pipeline (1) is overhauled; the utility model is characterized in that the emptying facility (2) comprises an emptying pipeline, a plurality of emptying pumps (24) and a water pumping pipeline (27);
two sides of the shield tunnel, which are close to the bottom, are respectively provided with a water supply cabin and an equipment cabin which extend along the length direction; wherein, the water supply cabin on one side is provided with the water supply pipeline (1), and the overhaul platform of the equipment cabin on the other side is provided with all the emptying pumps (24) at intervals along the length direction;
the height of the water inlet of each emptying pump (24) is not higher than that of the water supply pipeline (1);
the emptying pipeline comprises an emptying main pipe (22) and water outlet branch pipes (23) the number of which is matched with that of the emptying pumps (24);
the emptying main pipe (22) is arranged in the water supply cabin, is arranged in parallel with the water supply pipeline (1), and is communicated with the water supply pipeline (1) through the emptying pipeline;
each water outlet branch pipe (23) is arranged at the bottom of the shield tunnel, one end of each water outlet branch pipe is connected with the corresponding emptying main pipe (22), and the other end of each water outlet branch pipe is connected with the inlet of the corresponding emptying pump (24);
the pumping pipeline (27) comprises pumping branch pipes, the number of which is matched with that of the emptying pump (24), and a pumping main pipe;
one end of each water pumping branch pipe is connected with the outlet of the corresponding emptying pump (24), and the other end is connected with the water pumping main pipe;
the water lifting main pipe is connected with a tunnel wastewater pump room (5) of the shield tunnel.
2. The large-caliber water supply pipeline emptying device in the shield tunnel according to claim 1, wherein each water outlet branch pipe (23) is made of welded steel, is matched with the concave shape of the bottom of the shield tunnel in shape, and is buried in a cushion layer of the bottom of the shield tunnel.
3. The large-caliber water supply pipeline emptying facility in the shield tunnel according to claim 1, wherein the water supply pipeline (1) is a welded steel pipe, working wells (4) at two ends of the shield tunnel enter the shield tunnel, and the matched auxiliary facilities comprise a bracket and a buttress.
4. The large-caliber water supply pipeline emptying facility in a shield tunnel according to claim 1, wherein two limiting retractors are symmetrically arranged on the emptying main pipe (22).
5. The large-caliber water supply pipeline emptying facility in the shield tunnel according to claim 1, wherein a water inlet valve (21) is arranged on an emptying pipeline communicated with the water supply pipeline (1) by the emptying main pipe (22);
the emptying main pipe (22) is positioned obliquely below the water supply pipeline (1) so that the emptying pipeline and the horizontal surface form an included angle of 45 degrees.
6. The large-caliber water supply pipeline emptying facility in a shield tunnel according to claim 1, wherein the water supply pipeline (1) is divided into a plurality of emptying sections of 800-1000 meters by a manual and electric butterfly valve (3);
each of the emptying sections is provided with one of the emptying devices (2).
7. The large-caliber water supply pipe emptying device in the shield tunnel according to claim 1, wherein each water lifting branch pipe is provided with a check valve (25) and a gate valve (26).
8. The in-shield tunnel large-caliber water supply pipe emptying facility according to claim 1, wherein all the emptying pumps (24) are divided into at least two groups; a plurality of said blow-down pumps (24) of each group are provided with one said pumping line (27).
9. The large-caliber water supply pipe emptying device in the shield tunnel according to claim 1, wherein the water supply header pipe of each water supply pipe (27) is provided with a backflow preventer (28).
10. The large-caliber water supply pipeline emptying facility in a shield tunnel according to claim 1, wherein the tunnel wastewater pump house (5) is provided with a plurality of wastewater pumps (51) and wastewater drainage pipelines (52), and the internal water is discharged through the plurality of wastewater pumps (51) and the wastewater drainage pipelines (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311398895.4A CN117267507A (en) | 2023-10-26 | 2023-10-26 | Large-caliber water supply pipeline emptying facility in shield tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311398895.4A CN117267507A (en) | 2023-10-26 | 2023-10-26 | Large-caliber water supply pipeline emptying facility in shield tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117267507A true CN117267507A (en) | 2023-12-22 |
Family
ID=89210542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311398895.4A Pending CN117267507A (en) | 2023-10-26 | 2023-10-26 | Large-caliber water supply pipeline emptying facility in shield tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117267507A (en) |
-
2023
- 2023-10-26 CN CN202311398895.4A patent/CN117267507A/en active Pending
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