CN211819509U - Merging structure in tunnel drainage system - Google Patents
Merging structure in tunnel drainage system Download PDFInfo
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- CN211819509U CN211819509U CN202020254320.0U CN202020254320U CN211819509U CN 211819509 U CN211819509 U CN 211819509U CN 202020254320 U CN202020254320 U CN 202020254320U CN 211819509 U CN211819509 U CN 211819509U
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Abstract
The utility model discloses a merging structure in tunnel drainage system, merging structure includes: a primary tunnel; the inclined shaft is arranged on one side of the main tunnel and is connected into the main tunnel in a local uphill mode; and the pump house functional structure is arranged in the inclined shaft and sequentially comprises a personnel equipment room, a sedimentation tank, a water collecting bin and an emergency water bin from the access end part. The utility model combines the inclined shaft and the main tunnel pump room, thereby saving the work load of the pump room, reducing the excavation risk of the pump room and expanding the use function of the inclined shaft in the operation stage; the inclined shaft is used as an internal structure to form a pump room, so that earthwork and lining engineering quantity for independently constructing the pump room are saved.
Description
Technical Field
The utility model relates to a tunnel construction technical field especially relates to a merged structure in tunnel drainage system.
Background
The pump house is an important component of a tunnel engineering drainage system and is responsible for collecting structural leakage water, track scouring water and fire-fighting water and discharging the water outside a tunnel. The pump house is arranged at the lowest point of a common non-one-way slope tunnel, and a plurality of pump houses are arranged at the lowest point, the upper slope section and the lower slope section of a long tunnel or a tunnel in an area with abundant underground water, so that upstream waste water is intercepted at a high place and is dispersedly collected, and the purposes of energy conservation and multiple guarantee are achieved.
The pump house construction is a link with prominent risks in tunnel construction, and the main reason is that the pump house is usually arranged between a left tunnel and a right tunnel and is communicated with the tunnels through a transverse channel, so that the pump house is exposed to the risks of small clear distance tunnel construction and cross chamber construction; secondly, in order to meet the functional requirements of water collection and pumping, the water collecting tank of the pump house needs to have a certain depth, so that the surface is high and the section is excavated, supported and vertically discharged in the holeRisk; in addition, the pump rooms of some large tunnels also have the functions of power distribution following stations and the like, the structure is complex, the scale is large, the interval from five-edge bay stations to five-Liu stations of No. 3 lines of a building door subway is taken as an example, three large pump rooms are arranged in a main interval, the pump rooms are of an upper layer structure and a lower layer structure, the lower layer structure is a water collecting pool, the upper layer structure is a substation, a spare article warehouse, a duty room, a control room and the like, and the earth and stone excavation amount of a single pump room reaches 14000m3The difficulty is imaginable when a huge pump room with the scale is excavated in a limited tunnel space.
The inclined shaft is an auxiliary tunnel applied to the tunnel construction process, cuts into the middle section of a line from the ground through a shorter path, and opens up a working face to tunnel towards the direction of holes at two ends so as to accelerate the overall progress of a project. For tunnel engineering in the field of transportation, the inclined shaft has three processing methods after the completion of a tunnel main body: (1) plugging or backfilling, for example, plugging 4 inclined wells of tunnel engineering of the Waring railway south Lu Beam mountain; (2) the inclined shaft is transformed into a ventilation roadway or a rescue evacuation channel, such as a Hu-Rong-West highway Longtan tunnel, and the main tunnel is divided into 3 sections for ventilation through 2 inclined shafts on the left and right lines.
From the analysis, the pump house construction difficulty and the risk are high for the tunnel provided with the pump house and the inclined shaft at the same time; on the other hand, if the main tunnel does not require an additional ventilation tunnel or a rescue evacuation passageway, the inclined shaft cannot be fully utilized during operation.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a merging structures in tunnel drainage system can practice thrift pump house engineering volume, reduces the pump house excavation risk, extends operation stage inclined shaft service function.
In order to achieve the above object, the present invention provides a concrete technical solution of a merging structure in a tunnel drainage system, which is:
a consolidated structure within a tunnel drainage system, comprising: a primary tunnel; the inclined shaft is arranged on one side of the main tunnel and is connected into the main tunnel in a local uphill mode; and the pump house functional structure is arranged in the inclined shaft and sequentially comprises a personnel equipment room, a sedimentation tank, a water collecting bin and an emergency water bin from the access end part.
The utility model discloses an advantage of integrated configuration in tunnel drainage system lies in:
1) the inclined shaft and the main tunnel pump room are combined, so that the work amount of the pump room is saved, the excavation risk of the pump room is reduced, and the use function of the inclined shaft in the operation stage is expanded;
2) the inclined shaft is used for constructing an internal structure to form a pump house, so that earthwork and lining engineering quantity for independently constructing the pump house are saved;
3) the tunnel cross joint and the high section excavation amount are reduced, and the pump house construction risk is reduced;
4) the utilization rate of the inclined shaft tunnel is improved, and the use function of the operation stage is particularly expanded.
Drawings
Fig. 1 is a schematic plan view of a merged structure in a tunnel drainage system of the present invention;
FIG. 2 is a schematic cross-sectional view along the center line of the intercepting drain and the diversion trench of the present invention;
fig. 3 is a cross-sectional view of the functional structure of the pump house in the room of the personal device.
In the figure: 1. a deviated well; 2. a primary tunnel; 3. intercepting a ditch; 4. a gutter; 5. a sedimentation tank; 6. a water collecting bin; 7. an emergency water sump; 8. a personnel equipment room; 9. a first fire evacuation channel; 10. a second fire-fighting evacuation channel; 11. a longitudinal ditch; 12. an overflow port.
Detailed Description
For better understanding of the purpose, structure and function of the present invention, the following description will be made in detail with reference to the accompanying drawings for a merged structure in a tunnel drainage system.
As shown in fig. 1 to 3, it shows that the utility model discloses a merging structure in tunnel drainage system, merging structure include main tunnel 2, and one side of main tunnel 2 is provided with inclined shaft 1, and inclined shaft 1 is inside to be provided with pump house functional structure. Specifically, the inclined shaft 1 is connected to the main tunnel 2 in a local ascending manner, and after the main tunnel 2 is completed, a pump house functional structure is constructed in the inclined shaft 1. As shown in fig. 2, the vertical section of the inclined shaft 1 in the present invention is a V-shaped slope or a W-shaped slope, that is, starting from the entrance of the inclined shaft 1 on the ground, going downhill first, going uphill again, and the end point is connected to the main tunnel 2. The inclined shaft is used as an auxiliary tunnel in the construction period to provide convenience for transportation, ventilation and drainage, and is used as a main tunnel pump room and a power distribution follow-up station after being transformed in the operation period.
Further, the pump house functional structure comprises a personnel and equipment room 8, a sedimentation tank 5, a water collecting bin 6 and an emergency water bin 7 which are separated by a wall body from the access end part in sequence, wherein the personnel and equipment room, the sedimentation tank 5, the water collecting bin 6 and the emergency water bin 7 are relatively independent areas, and workers can move to any one of the areas through doors and corridors. As shown in fig. 3, the lower part of the cross section of the pump house functional structure is a plain concrete backfill layer, the top surfaces of the backfill layers in the personnel and equipment rooms 8 are flush, a cable trench is reserved in the backfill layers, and a concrete cover plate is arranged at the upper part of the trench.
Furthermore, the pump house functional structure is connected to the main tunnel 2 via at least two mutually independent fire evacuation channels, including a first fire evacuation channel 9 and a second fire evacuation channel 10. As shown in fig. 3, a first fire evacuation passageway 9 is arranged along one side of the inclined shaft 1 and is separated from the personnel equipment room 8 by a wall; the second fire evacuation passageway 10 is vertically communicated with the inclined shaft 1 and the main tunnel 2, so that when any point in the pump room functional structure catches fire, people have at least one escape passage to the main tunnel 2.
Further, a catch basin 3 is arranged in the main tunnel 2, a water diversion ditch 4 is arranged in the inclined shaft 1, the bottoms of the catch basin 3 and the water diversion ditch 4 are single-direction slopes, and the elevation of the bottom of the ditch is gradually reduced towards one side of the sedimentation tank 5 and the water collecting bin 6. The intercepting drain 3 is intersected with a longitudinal drain 11 of the main tunnel 2, the water diversion trench 4 is arranged along the trend of the inclined shaft 1, and the intercepting drain 3 and the water diversion trench 4 are sequentially communicated with the sedimentation tank 5, the water collecting bin 6 and the emergency water bin 7. The water flow in the longitudinal ditch 11 in the main tunnel 2 is intercepted by the intercepting ditch 3, flows into the diversion ditch 4 along the slope, then flows into the sedimentation tank 5 to remove coarse particle impurities, and then flows into the water collecting bin 6.
The gutter 4 is arranged below the first fire evacuation channel 9, the gutter 4 is of a blind ditch type, a concrete cover plate is arranged on the upper portion of a groove of the gutter 4 to isolate water vapor and facilitate people to walk, and the blind ditch is provided with an inspection well every 14-16 m (preferably 15 m).
Further, as shown in fig. 2, an overflow port 12 is arranged on a partition wall between the water collecting bin 6 and the emergency water bin 7 in the pump room functional structure, and the elevation of the port bottom of the overflow port 12 is lower than the elevation of the road surface of the main tunnel 2 at the connection position of the inclined shaft 1, so as to ensure that the water level in the water collecting bin 6 is always lower than the road surface of the main tunnel 2, which means that the water in the intercepting drain 3 and the diversion drain 4 can always keep flowing in a single direction.
Further, the emergency water sump 7 utilizes the inclined shaft in other sections behind the overflow port 12, and has the function that when power failure or water pump failure occurs and the water collecting sump 6 cannot normally pump water, the bottom plate of the emergency water sump 7 is the bottom plate of the inclined shaft 1, overflowed water enters the emergency water sump 7 through the overflow port 12, flows to the lowest point along the inclined shaft 1 with a slope, and is pumped and discharged to the outside of the tunnel through the standby power supply and the submersible pump at the lowest point through the inlet of the inclined shaft 1.
The utility model also discloses a construction method that inclined shaft and main tunnel pump house merge the setting pattern, including following step:
step one, constructing an inclined shaft 1, including earthwork excavation, primary support and secondary lining;
specifically, the inclined shaft 1 is constructed by a mining method and comprises earthwork excavation, primary support and secondary lining, and the clearance size in the inclined shaft needs to meet the requirements of construction transportation and ventilation and the requirements of combination and arrangement of a pump room in the later period.
And step two, completing the main structure of the main tunnel 2 by using the inclined shaft 1, constructing the intercepting ditch 3, and tunneling the inclined shaft 1 towards the opening direction of the main tunnel 2 after the inclined shaft is connected to the linear position of the main tunnel 2 to complete the main tunnel 2.
And step three, performing secondary lining on the inclined shaft 1 according to the functional requirements of the pump room, and constructing a functional structure of the pump room in the inclined shaft.
Specifically, the internal structure of the inclined shaft 1 is constructed, the inverted arch of the inclined shaft is backfilled with plain concrete to form the ground of a personnel and equipment room 8, the diversion trench 4 and a cable trench in the room are reserved in the backfilling process, and structural walls among the sedimentation tank 5, the water collecting bin 6, the emergency water bin 7 and the personnel and equipment room 8 and in the personnel and equipment room and the room are constructed.
And step four, decorating and installing the functional structure of the pump house.
Particularly, a water pump and pipelines required by the operation of a pump room are installed, and power supply, ventilation and lighting equipment are installed.
The utility model discloses a merge structure in tunnel drainage system, through setting up inclined shaft and main tunnel pump house combination, thereby practice thrift pump house engineering volume, reduce pump house excavation risk, expand the service function of inclined shaft at the operation stage; the inclined shaft is used for constructing an internal structure to form a pump house, so that earthwork and lining engineering quantity for independently constructing the pump house are saved; the tunnel cross joint and the high section excavation amount are reduced, and the pump house construction risk is reduced; the utilization rate of the inclined shaft tunnel is improved, and the use function of the operation stage is particularly expanded.
The present invention has been further described with reference to specific embodiments, but it should be understood that the specific description herein should not be construed as limiting the spirit and scope of the present invention, and that various modifications to the above-described embodiments, which would occur to persons skilled in the art after reading this specification, are within the scope of the present invention.
Claims (7)
1. A consolidated structure within a tunnel drainage system, comprising:
a main tunnel (2);
the inclined shaft (1) is arranged on one side of the main tunnel (2) and is connected into the main tunnel (2) in a local uphill mode; and
the pump house functional structure is arranged in the inclined shaft (1) and sequentially comprises a personnel equipment room (8), a sedimentation tank (5), a water collecting bin (6) and an emergency water bin (7) from an access end part.
2. The merging structure according to claim 1, characterized in that the vertical section of the slant well (1) is a V-slope or a W-slope.
3. The merging structure according to claim 1, characterized in that the pump house functional structure is connected to the main tunnel (2) through at least two mutually independent fire evacuation channels, wherein:
the first fire-fighting evacuation channel (9) is arranged along one side of the inclined shaft (1) and is separated from the personnel equipment room (8) through a wall body;
and the second fire-fighting evacuation channel (10) is vertically communicated between the inclined shaft (1) and the main tunnel (2).
4. The integrated structure of claim 3, wherein a catch basin (3) is arranged in the main tunnel (2), a gutter (4) is arranged in the inclined shaft (1), the bottoms of the catch basin (3) and the gutter (4) are in a one-way slope, the elevation of the bottom of the gutter gradually decreases towards one side of the sedimentation tank (5) and the sump (6), and the gutter (4) is arranged below the first firefighting evacuation channel (9).
5. A merging structure according to claim 3, characterised in that the gutter (4) is of the blind type, the upper part of the gutter (4) being provided with a concrete cover plate.
6. The merging structure of claim 4, wherein the intercepting drain (3) intersects with a longitudinal drain (11) of the main tunnel (2), the gutter (4) is arranged along the run of the inclined shaft (1), and the intercepting drain (3), the gutter (4) are communicated with the sedimentation basin (5), the water collecting bin (6) and the emergency sump (7) in sequence.
7. The merging structure of claim 1, characterized in that an overflow port (12) is arranged on a partition wall between the water collecting bin (6) and the emergency water bin (7) in the pump room functional structure, and the elevation of the bottom of the overflow port (12) is lower than the elevation of the road surface of the main tunnel (2) at the connection of the inclined shaft (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020254320.0U CN211819509U (en) | 2020-03-04 | 2020-03-04 | Merging structure in tunnel drainage system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020254320.0U CN211819509U (en) | 2020-03-04 | 2020-03-04 | Merging structure in tunnel drainage system |
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| CN211819509U true CN211819509U (en) | 2020-10-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565524A (en) * | 2021-08-04 | 2021-10-29 | 中铁二院工程集团有限责任公司 | Groove type inclined shaft and tunnel structure capable of preventing outburst sand gushing in operation period and design method |
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2020
- 2020-03-04 CN CN202020254320.0U patent/CN211819509U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565524A (en) * | 2021-08-04 | 2021-10-29 | 中铁二院工程集团有限责任公司 | Groove type inclined shaft and tunnel structure capable of preventing outburst sand gushing in operation period and design method |
| CN113565524B (en) * | 2021-08-04 | 2022-04-08 | 中铁二院工程集团有限责任公司 | Groove type inclined shaft and tunnel structure capable of preventing outburst sand gushing in operation period and design method |
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