CN217974239U

CN217974239U - River channel structure of underpass tunnel

Info

Publication number: CN217974239U
Application number: CN202221424019.5U
Authority: CN
Inventors: 张广健; 张弘扬; 邢骏; 郭国良; 葛培东; 张彩纲; 郭霞辉; 周剑豪
Original assignee: Hangzhou Municipal Construction Group Co ltd
Current assignee: Hangzhou Municipal Construction Group Co ltd
Priority date: 2022-06-09
Filing date: 2022-06-09
Publication date: 2022-12-06
Anticipated expiration: 2032-06-09

Abstract

The utility model discloses a wear river course structure in tunnel down, including open channel, grit chamber, underdrain inverted siphon well and the section underdrain of wearing down, the upper and lower trip of the section underdrain of wearing down communicates underdrain inverted siphon well and grit chamber respectively in proper order, grit chamber intercommunication open channel, and the elevation of grit bottom of the pool is less than the elevation at the bottom of the open channel, and underdrain inverted siphon well one side and grit chamber intercommunication, the underdrain inverted siphon well middle part set up mid-board and overhaul the gate, are equipped with grit chamber intercommunication department and still set up trash rack, opposite side and the section underdrain intercommunication of wearing down. The utility model is provided with the grit chamber at the open channel side, the grit operation is carried out in advance, and the trash rack is arranged to block suspended matters and floating matters, thereby reducing the deposition entering the underrun section underdrain; the connecting part of the underdrain inverted siphon well and the underdrain section underdrain adopts a horn mouth form, so that the local head loss of an inlet and an outlet of the underdrain section underdrain is reduced; the maintenance gate that sets up is convenient to overhaul to adopt porous box culvert, realized the normal stream of river when overhauing and lead to water.

Description

River channel structure of underpass tunnel

Technical Field

The utility model belongs to the technical field of the river course construction, concretely relates to wear river course structure in tunnel down.

Background

The construction of underground traffic structures often encounters the problem of cross treatment with urban river channels, and a general cross treatment mode is that the underground traffic structures penetrate through the river channels, but under some conditions, the mode that the underground traffic structures penetrate through the river channels is difficult to implement, and avoidance measures need to be taken for the river channels, and the mode that the underground traffic structures penetrate through the river channels is taken.

The underground traffic structure is worn under the river course, generally can adopt haplopore or porous box culvert, need solve two key problems: the first problem is that the river water flow is at a high flow rate, the head loss caused by the fact that the river water flows downwards through the river under a large flow rate (generally, the river water flows through Hong Shi) is as small as possible, the head difference between the upstream and downstream is as small as possible, and the safety and the reliability of the river water flow in the flood prevention and flood fighting period can be guaranteed only in this way; the second problem is that the river flow is at a low flow rate, and the siltation of the river in the lower crossing section is reduced as much as possible under a small flow rate (generally under a normal state), so that the siltation of the river in the lower crossing section can be conveniently and effectively performed.

SUMMERY OF THE UTILITY MODEL

To the loss of head and the river course siltation scheduling problem that exists among the prior art, the utility model aims to provide a wear tunnel's river course structure down.

In order to achieve the purpose, the following technical scheme is provided:

the utility model provides a river course structure of underpass tunnel, including the open channel, the grit chamber, the underdrain falls the siphon well and underpass the section underdrain, the up-and-down stream of underpass the section underdrain communicates the underdrain respectively in proper order and falls siphon well and grit chamber, grit chamber intercommunication open channel, the elevation at the bottom of the grit chamber is less than the elevation at the bottom of the open channel, one side and the grit chamber intercommunication of the underdrain falls the siphon well, the intercommunication department is equipped with the grid, opposite side and underpass section underdrain intercommunication, be equipped with horizontal mid-partition wall in the underdrain falls the siphon well, install the maintenance gate on the mid-partition wall, set up the grit chamber between open channel and the underdrain fall the siphon well, carry out the deposit in advance with silt.

Furthermore, underrun section underdrain adopts porous box culvert, and the underdrain of upper and lower low reaches falls the rainbow well and is vertically divided into many parts according to the rivers direction respectively, corresponds respectively and connects porous box culvert, constitutes the multithread way to when one of them pore flow way overhauls the desilting, other pore flow ways can work as usual.

Furthermore, a threshold is arranged at the communication position of the grit chamber and the underground channel inverted siphon well, the elevation of the bottom of the threshold is higher than the elevation of the bottom of the grit chamber by more than 500mm, a grid is arranged at the position of the threshold, the elevation of the bottom of the underground channel inverted siphon well is lower than the elevation of the bottom of the grit chamber, the elevation of the bottom of the underground channel inverted siphon well is equal to the elevation of the bottom of the underground channel of the lower-pass section, and the upstream water flow can pass through smoothly.

Furtherly, it is equipped with towards the silt system to overhaul gate department, it includes the water inlet to wash the silt system, connect the water pipe, wash silt pump and delivery port, the side of the underdrain inverted siphon well is located to the water inlet, the underdrain inverted siphon well bottom is located to the delivery port, and be located overhaul gate below one side, connect water piping connection water inlet and delivery port, be equipped with towards the silt pump on connecting the water pipe, water in the underdrain inverted siphon well passes through the water inlet and gets into in connecting the water pipe, and through washing silt pump sending to delivery port, water is spout from the delivery port, wash the silt to the bottom of overhauing the gate below.

The maintenance gate is controlled through a gate hoist arranged at the top of the transverse middle partition wall, and the gate hoist drives the maintenance gate to be opened or closed.

Furthermore, the underrun and the tunnel can share the top and bottom plate, so that the buried depth of the underrun is reduced.

Furthermore, the junction of the underdrain inverted siphon well and the underdrain section underdrain adopts a horn mouth form, so that the local head loss of the inlet and the outlet of the underdrain section underdrain is reduced.

Furthermore, the underrun needs to have a certain water cross-sectional area during the flood period, so that the head loss of upstream and downstream of the underrun is not greater than that of upstream and downstream caused by adopting the open channels with the same length.

Under daily water level and flood level operating mode, the maintenance gate of upper and lower reaches all is the open mode, guarantee the smooth circulation of rivers, the underdrain falls the siphon and can take water desilting under maintenance desilting operating mode, can wash away maintenance gate below deposit through towards the silt pump, wash the silt completion back, the maintenance gate of upper and lower reaches is closed, then will wear the water in the section underdrain to dry, the manual work is to wearing section underdrain and carry out desilting work down, the desilting is accomplished the back, open and overhaul the gate.

The beneficial effects of the utility model reside in that:

1) A grit chamber is arranged at the side of the open channel, grit settling operation is performed in advance, and a grid is arranged to block suspended matters and floating matters, so that deposition entering a underpass section and a closed channel is reduced;

2) The connecting part of the underdrain inverted siphon well and the underdrain section underdrain adopts a bell mouth form, so that the local head loss of an inlet and an outlet of the underdrain section underdrain is reduced;

3) The maintenance gate is arranged, maintenance is convenient, the porous box culvert is adopted, and normal circulation of rivers during maintenance is realized.

Drawings

Fig. 1 is a cross-sectional view of the present invention;

fig. 2 is a top view of the present invention.

In the figure: 1. an open channel; 2. a grit chamber; 3. inverting the siphon well through the underdrain; 31. a grid; 32. repairing the gate; 33. a water inlet; 34. connecting a water pipe; 35. a sludge flushing pump; 36. a water outlet; 4. and (4) undermining the section underdrain.

Detailed Description

The present invention will be further described with reference to the drawings, but the scope of the present invention is not limited thereto.

As shown in figures 1 and 2, a tunnel-down river channel structure comprises an open channel 1, a grit chamber 2, an underdrain inverted siphon well 3 and an underdrain section underdrain 4, wherein the underdrain section underdrain 4 adopts a porous box culvert, the underdrain inverted siphon well 3 at the upstream and the downstream is longitudinally divided into a plurality of parts according to the water flow direction respectively and is correspondingly connected with the porous box culverts respectively to form a multi-runner, the underdrain inverted siphon well 3 is communicated with the grit chamber 2, the grit chamber 2 is communicated with the open channel 1, the elevation at the bottom of the grit chamber 2 is lower than that at the bottom of the open channel 1, the elevation at the bottom of the underdrain inverted siphon well 3 is lower than that at the bottom of the grit chamber 2, the elevation at the bottom of the underdrain inverted siphon well 3 is equal to that at the bottom of the underdrain section underdrain 4, one side of the underdrain inverted siphon well 3 is communicated with the grit chamber 2, the other side of the underdrain section underdrain 4, a threshold is arranged at the communication position of the grit chamber 2 and the bottom of the grit chamber 3, the sill is higher than that at the bottom of the grit chamber 2 by more than 500mm, threshold department installation grid 31, be equipped with horizontal mid-board in the underdrain falls the siphon well 3, install maintenance gate 32 on the mid-board, maintenance gate 32 controls through the gate hoist at mid-board top, the gate hoist drives maintenance gate 32 and opens or close, maintenance gate 32 department is equipped with towards the silt system, it includes water inlet 33 to wash the silt system, connect water pipe 34, wash silt pump 35 and delivery port 36, the side of underdrain falls the siphon well 3 is located to water inlet 33, delivery port 36 is located the underdrain falls the siphon well 3 bottom, and be located maintenance gate 32 below one side, it connects water inlet 33 and delivery port 36 to connect water pipe 34, be equipped with towards silt pump 35 on connecting water pipe 34, under wear section underdrain 4 and tunnel can share the overhead gage, underdrain falls the siphon well 3 and under wear section underdrain 4 junction and adopt the horn mouth form.

Under daily water level and flood level operating mode, the maintenance gate 32 of upper and lower reaches all is the open mode, guarantee the smooth circulation of rivers, the underdrain falls the siphon 3 and can take the water desilting under the maintenance desilting operating mode, can wash away maintenance gate 32 below deposit through scouring pump 35, the back is accomplished in the scouring, the maintenance gate 32 of upper and lower reaches is closed, then take out the water in the underdrain 4 and dry, the manual work is carried out the desilting work to the underdrain 4, after the desilting was accomplished, open maintenance gate 32.

Claims

1. The utility model provides a pass river course structure in tunnel down, its characterized in that includes open channel (1), grit chamber (2), underdrain section hidden channel (3) and underdrain section hidden channel (4), the upper and lower stream of underdrain section hidden channel (4) communicates hidden channel section hidden channel (3) and grit chamber (2) respectively in proper order, grit chamber (2) intercommunication open channel (1), the elevation at the bottom of grit chamber (2) is less than the elevation at the bottom of open channel (1), one side and grit chamber (2) intercommunication of hidden channel section hidden channel (3), intercommunication department is equipped with grid (31), opposite side and underdrain section hidden channel (4) intercommunication, be equipped with horizontal mid-board in the hidden channel section hidden channel (3), install maintenance gate (32) on the mid-board.

2. The river channel structure of the underpass tunnel according to claim 1, wherein the underpass section of the underdrain (4) adopts a porous box culvert, and the underdrain inverted siphon wells (3) at the upper and lower positions are longitudinally divided into a plurality of parts according to the water flow direction and are respectively correspondingly connected with the porous box culverts to form a multi-channel.

3. The tunnel-through riverway structure according to claim 2, wherein a threshold is arranged at the communication position of the grit chamber (2) and the underdrain inverted siphon well (3), the height of the bottom of the threshold is higher than the elevation of the bottom of the grit chamber (2) by more than 500mm, a grid (31) is arranged at the threshold, the elevation of the bottom of the underdrain inverted siphon well (3) is lower than the elevation of the bottom of the grit chamber (2), and the elevation of the bottom of the underdrain inverted siphon well (3) is equal to the elevation of the bottom of the underdrain (4).

4. The tunnel-through riverway structure according to claim 3, wherein the maintenance gate (32) is provided with a silt flushing system, the silt flushing system comprises a water inlet (33), a connecting water pipe (34), a silt flushing pump (35) and a water outlet (36), the water inlet (33) is arranged on the side surface of the underdrain inverted siphon (3), the water outlet (36) is arranged at the bottom of the underdrain inverted siphon (3) and is positioned on one side below the maintenance gate (32), the connecting water pipe (34) is connected with the water inlet (33) and the water outlet (36), and the silt flushing pump (35) is arranged on the connecting water pipe (34).

5. The river course structure of a underpass tunnel as claimed in claim 1 or 2, wherein the service gate (32) is controlled by a gate hoist provided at the top of the transverse intermediate wall, the gate hoist driving the service gate (32) to open or close.

6. An underpass waterway structure according to claim 1 or 2, wherein the underpass section underdrains (4) and the tunnel share a roof and floor.

7. A tunnel-underpass waterway structure according to claim 6, wherein the junction of the underdrain inverted siphon well (3) and the underpass section (4) is in the form of a bell mouth.