CN113503186A - Long tunnel inclined shaft advances hole construction adverse slope drainage system - Google Patents
Long tunnel inclined shaft advances hole construction adverse slope drainage system Download PDFInfo
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- CN113503186A CN113503186A CN202110963941.5A CN202110963941A CN113503186A CN 113503186 A CN113503186 A CN 113503186A CN 202110963941 A CN202110963941 A CN 202110963941A CN 113503186 A CN113503186 A CN 113503186A
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- water collecting
- tunnel
- filter screen
- pit
- drainage system
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- 238000010276 construction Methods 0.000 title claims abstract description 23
- 230000002411 adverse Effects 0.000 title claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 82
- 238000007667 floating Methods 0.000 claims description 17
- 238000005452 bending Methods 0.000 claims description 13
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005086 pumping Methods 0.000 abstract description 3
- 102000001999 Transcription Factor Pit-1 Human genes 0.000 description 13
- 108010040742 Transcription Factor Pit-1 Proteins 0.000 description 13
- 238000009412 basement excavation Methods 0.000 description 8
- 230000002349 favourable effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000011378 shotcrete Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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Classifications
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
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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)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Sewage (AREA)
Abstract
The invention discloses a long tunnel inclined shaft hole entering construction reverse slope drainage system, which comprises a plurality of water collecting pits, wherein the water collecting pits are distributed along the inclined direction of a tunnel; submersible pumps are arranged in the water collecting pits, and the output ends of the submersible pumps are connected with connecting pipes; in two adjacent water collecting pits, a submersible pump in the lower water collecting pit is communicated with the upper water collecting pit through a connecting pipe; the slope upper end in tunnel is equipped with the catch basin, the catch basin is located tunnel entrance to a cave below, and the immersible pump in the sump pit that the position is highest passes through connecting pipe and catch basin intercommunication. The invention has the effect of reducing the pumping distance of the submersible pump.
Description
Technical Field
The invention relates to the technical field of tunnel drainage, in particular to a long tunnel inclined shaft hole entering construction reverse slope drainage system.
Background
In tunnel construction, drainage is a main difficulty, particularly in the excavation of a reverse slope section tunnel of a long and large tunnel inclined shaft, if underground water cannot be effectively drained in time, water accumulated on the tunnel face can be caused, and normal construction of operations such as excavation, supporting, lining and the like can be seriously disturbed.
In the related art, a water suction pump is generally adopted to suck accumulated water at the tunnel face, and as the tunnel is continuously excavated deeply, the suction distance is increased, and the suction of the water suction pump is also increasingly difficult, so that the improvement space is still provided.
Disclosure of Invention
In order to reduce the pumping distance, the invention provides a long tunnel inclined shaft hole-entering construction reverse slope drainage system.
The invention provides a reverse slope drainage system for long tunnel inclined shaft hole entering construction, which adopts the following technical scheme:
a reverse slope drainage system for long tunnel inclined shaft hole entering construction comprises a plurality of water collecting pits, wherein the water collecting pits are distributed along the inclined direction of a tunnel; submersible pumps are arranged in the water collecting pits, and the output ends of the submersible pumps are connected with connecting pipes; in two adjacent water collecting pits, a submersible pump in the lower water collecting pit is communicated with the upper water collecting pit through a connecting pipe; the slope upper end in tunnel is equipped with the catch basin, the catch basin is located tunnel entrance to a cave below, and the immersible pump in the sump pit that the position is highest passes through connecting pipe and catch basin intercommunication.
Through a plurality of sumps of tunnel excavation and a catch basin, multistage water storage structure has been formed, avoid all ponding all to gather at the face in tunnel, be favorable to reducing the influence of ponding to tunnel excavation, through a immersible pump of installation in every sump pit, make the sump pit accessible immersible pump that the position is low take out ponding to the higher sump pit in position, the highest sump pit in position is taken out ponding to the catch basin in through the immersible pump, thereby the suction distance of single immersible pump has been shortened, ponding in the sump pit can directly be taken out from tunnel entrance to a cave, be favorable to discharging the ponding in tunnel.
Preferably, two side ditches are communicated between two adjacent water collecting pits and between two adjacent water collecting pools and the water collecting pits, and the two side ditches are respectively arranged on two sides of the tunnel.
By adopting the technical scheme, seepage water in the tunnel is led into the water collecting pits through the side ditches, and when a submersible pump of a certain water collecting pit is powered off or damaged to cause accumulated water overflow, the seepage water can flow to the water collecting pit with a lower position through the side ditches, so that the condition of road overflow in the tunnel is reduced.
Preferably, the openings of the plurality of water collecting pits are provided with filter screens.
By adopting the technical scheme, the filter screen can be used for intercepting sundries such as rock chips, mud, rebound impurities adulterants of sprayed concrete and the like so as to prevent the sundries from entering the water collecting pit to influence the normal work of the submersible pump.
Preferably, the filter screen sets up in the slope, the slope upper end of filter screen is connected in sump pit opening edge, the slope lower extreme butt of filter screen is in the sump pit and is close to one side of tunnel entrance to a cave.
Through adopting above-mentioned technical scheme for the incline direction of filter screen and the incline direction in tunnel make filter screen and sump pit lateral wall form sunken position, and the edge is collected debris, avoids flowing along with rivers, reduces debris and slopes the lower extreme accumulational probability in the tunnel.
Preferably, the filter screen below is equipped with the floating collar, works as when ponding in the sump pit is overflowed, the filter screen upwards removes along with the floating collar come-up, the filter screen props up debris.
Through adopting above-mentioned technical scheme, avoid debris to follow the ponding flow direction position lower sump that overflows, cause debris to pile up serious condition.
Preferably, the inside wall of the sump is provided with a chute, the length direction of the chute is consistent with the depth direction of the sump, and the floating ring is provided with a sliding block which is in sliding connection with the chute.
Through adopting above-mentioned technical scheme for floating collar and filter screen can be along with the stable unsteady of ponding liquid level, prevent that the floating collar from breaking away from the sump pit.
Preferably, when the slide block moves up to the upper end of the sliding groove, the inclined lower end of the filter screen moves up and is connected with the bottom wall of the side groove.
Through adopting above-mentioned technical scheme, be convenient for collect the debris of side ditch, because the filter screen slope sets up to play the cushioning effect to the ponding that flows, avoid the debris of filter screen to be washed to in the sump pit.
Preferably, the upper end of the slope of filter screen is provided with the board of bending, the board of bending is set up in sump pit opening edge, works as when the ponding of sump pit overflows, the board of bending shifts up and separates with the sump pit opening.
Through adopting above-mentioned technical scheme, when ponding in the sump pit is less, the board of bending plays the effect of connecting filter screen and sump pit, works as when the ponding of sump pit is overflowed, the board of bending plays and separates the fender effect, avoids the debris of filter screen to be washed to the sump pit in.
Drawings
FIG. 1 is a schematic view of an internal structure of a long tunnel inclined shaft hole entering construction reverse slope drainage system in an embodiment of the invention.
Fig. 2 is an enlarged view at a in fig. 1.
Fig. 3 is an enlarged view at B in fig. 1.
Description of reference numerals: 1. a tunnel; 2. a sump; 3. a water collecting tank; 4. side ditches; 5. a hole; 6. A chute; 7. a filter screen; 71. bending the plate; 8. a submersible pump; 81. a connecting pipe; 9. a floating ring; 91. a slider; 92. a support rod.
Detailed Description
The present invention is described in further detail below with reference to figures 1-3.
The embodiment of the invention discloses a long tunnel inclined shaft hole entering construction reverse slope drainage system. Referring to fig. 1, the long tunnel 1 inclined shaft hole entering construction reverse slope drainage system comprises a water collecting tank 3 and a plurality of water collecting pits 2, wherein the water collecting tank 3 is arranged on the bottom surface of the tunnel 1, the water collecting tank 3 is arranged at the inclined upper end of the tunnel 1, and the water collecting tank 3 is arranged below a hole opening 5 of the tunnel 1. Several sumps 2 are distributed along the inclined direction of the tunnel 1. In the construction excavation process of the tunnel 1, a water collecting pit 2 is excavated every time a section of distance is excavated, and along with the gradual excavation of the tunnel 1, the water collecting pits 2 form a multi-stage water storage structure, so that all accumulated water is prevented from being gathered on the face of the tunnel 1, and the influence of the accumulated water on the excavation of the tunnel 1 is favorably reduced.
Referring to fig. 2, immersible pumps 8 are all installed to the diapire in a plurality of sump 2, and each immersible pump 8's output all is connected with connecting pipe 81, and connecting pipe 81 is the hose. In two adjacent sumps 2, the submersible pump 8 in the lower sump 2 communicates with the upper sump 2 through the connection pipe 81. The submersible pump 8 in the highest sump 2 is connected to the sump 3 via a connecting pipe 81. The sump pit 2 accessible immersible pump 8 that the position is low takes out ponding to the higher sump pit 2 in position, and the highest sump pit in position is taken out ponding to 3 in the sump pit through immersible pump 8 to shortened single immersible pump 8's suction distance, be favorable to discharging the ponding in tunnel 1.
Two side ditches 4 are communicated between every two adjacent water collecting pits 2 and between every two adjacent water collecting pools 3 and the water collecting pits 2, and the two side ditches 4 are respectively arranged on two sides of the tunnel 1. So as to ensure that seepage water in the tunnel is led into the water collecting pits 2 through the side ditches 4, or when a submersible pump 8 of a certain water collecting pit 2 is powered off or damaged to cause ponding overflow, the seepage water can flow to the water collecting pit 2 with a lower position through the side ditches 4, and the condition of road overflow in the tunnel is reduced.
The openings of the water collecting pits 2 are provided with filter screens 7, and the filter screens 7 are used for intercepting sundries such as rock chips, mud and rebounding matter adulterants of sprayed concrete so as to prevent the sundries from entering the water collecting pits 2 to influence the normal work of the submersible pump 8. Two ends of the connecting pipe 81 are respectively embedded in the bottom surface of the tunnel 1 and are respectively communicated with the inner side walls of the two adjacent water collecting pits 2, so that the filter screen 7 can be installed.
The filter screen 7 is obliquely arranged, a bending plate 71 is fixed at the oblique upper end of the filter screen 7, the bending plate 71 is erected at the opening edge of the water collecting pit 2, and the bending plate 71 is located on one side, away from the tunnel 1 opening 5, of the water collecting pit 2. The lower end of the filter screen 7 is abutted to one side of the sump 2 close to the opening 5 of the tunnel 1, and the lower end of the filter screen 7 is lower than the bottom wall of the side ditch 4, so that sundries in accumulated water can be collected.
Referring to fig. 2 and 3, a floating ring 9 is arranged below the filter screen 7, and a plurality of support rods 92 are fixed between the floating rings 9 of the filter screen 7, so that the filter screen 7 rises along with the rising of the floating ring 9. The spout 6 has been seted up to two relative inside walls of sump 2, and 6 length direction of spout are unanimous with the degree of depth direction of sump 2. The two sides of the floating ring 9 are respectively fixed with a sliding block 91, the two sliding blocks 91 are in one-to-one correspondence with the two sliding grooves 6, and the two sliding blocks 91 are respectively in sliding clamping connection with the corresponding sliding grooves 6, so that the floating ring 9 and the filter screen 7 can stably float along with the water level of accumulated water.
Referring to fig. 2 and 3, when the accumulated water in the sump 2 overflows, the filter screen 7 moves upwards along with the floating ring 9, so that the inclined upper end of the filter screen 7 is supported away from the upper end opening of the adjacent side ditch 4, and the situation that sundries are accumulated seriously along with the overflow accumulated water flowing to the lower sump 2 is avoided. When slider 91 shifts up to the upper end of spout 6, the slope lower extreme of filter screen 7 shifts up to link up with 4 diapalls of side ditch, be convenient for collect the debris of side ditch 4, because filter screen 7 slope sets up, play the cushioning effect to the ponding that flows, the board 71 of bending this moment plays and separates the fender effect, avoids filter screen 7's debris to be washed to in sump 2.
The implementation principle of the reverse slope drainage system for the long tunnel 1 inclined shaft hole entering construction in the embodiment of the invention is as follows:
in the construction and excavation process of the tunnel 1, firstly, a water collecting tank 3 is excavated below a tunnel opening 5 of the tunnel 1, then, a water collecting pit 2 is excavated on the bottom surface of the tunnel 1 at intervals, so that a multi-stage water storage structure is formed, and water seeping in the tunnel is introduced into the water collecting pit 2 through a side ditch 4 between two adjacent water pits through the side ditch 4. The submersible pump 8 is arranged in the water collecting pit 2, the connecting pipe 81 is arranged between the adjacent water collecting pits 2, the water collecting pit 2 with a low position can pump accumulated water to the water collecting pit 2 with a higher position through the submersible pump 8, so that the pumping distance of the single submersible pump 8 is shortened, and the accumulated water in the tunnel 1 can be discharged.
In order to prevent that debris from influencing 8 normal workings of immersible pump, constructor is accomplishing 8 installation backs of immersible pump, and can have the filter screen 7 of floating collar 9 in the installation of 2 openings of sump pit, make floating collar 9 and filter screen 7 stably float along with the ponding liquid level, when reaching separation debris, also can prevent to carry the condition that filter screen 7 of debris immerses in the ponding, avoid debris to follow the lower sump pit 2 of ponding flow direction position that overflows, be convenient for collect carrying on debris.
The above are all preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (8)
1. The utility model provides a long tunnel inclined shaft advances hole construction adverse slope drainage system which characterized in that: the tunnel is characterized by comprising a plurality of water collecting pits (2), wherein the water collecting pits (2) are distributed along the inclined direction of the tunnel (1); submersible pumps (8) are arranged in the plurality of water collecting pits (2), and the output ends of the submersible pumps (8) are connected with connecting pipes (81); in two adjacent water collecting pits (2), a submersible pump (8) in the lower water collecting pit (2) is communicated with the upper water collecting pit (2) through a connecting pipe (81); the slope upper end in tunnel (1) is equipped with catch basin (3), catch basin (3) are located entrance to a cave (5) below in tunnel (1), and immersible pump (8) in the sump pit (2) of highest position are through connecting pipe (81) and catch basin (3) intercommunication.
2. The long tunnel inclined shaft hole entering construction reverse slope drainage system according to claim 1, characterized in that: two adjacent side ditches (4) are communicated between the two adjacent water collecting pits (2) and between the adjacent water collecting pools (3) and the water collecting pits (2), and the two side ditches (4) are respectively arranged on two sides of the tunnel (1).
3. The long tunnel inclined shaft hole entering construction reverse slope drainage system according to claim 2, characterized in that: and filter screens (7) are arranged at the openings of the water collecting pits (2).
4. The long tunnel inclined shaft hole entering construction reverse slope drainage system according to claim 3, characterized in that: the filter screen (7) is obliquely arranged, the oblique upper end of the filter screen (7) is connected to the opening edge of the water collection pit (2), and the oblique lower end of the filter screen (7) is abutted to one side, close to the tunnel (1) opening (5), of the water collection pit (2).
5. The long tunnel inclined shaft hole entering construction reverse slope drainage system according to claim 4, characterized in that: filter screen (7) below is equipped with floating collar (9), works as when ponding in sump pit (2) is overflowed, filter screen (7) come up and up remove along with floating collar (9), debris are propped up in filter screen (7).
6. The long tunnel inclined shaft hole entering construction reverse slope drainage system according to claim 5, characterized in that: spout (6) have been seted up to sump pit (2) inside wall, spout (6) length direction is unanimous with the degree of depth direction of sump pit (2), floating collar (9) be provided with spout (6) sliding connection's slider (91).
7. The long tunnel inclined shaft hole entering construction reverse slope drainage system of claim 6, wherein: when the sliding block (91) moves upwards to the upper end of the sliding groove (6), the inclined lower end of the filter screen (7) moves upwards and is connected with the bottom wall of the side groove (4).
8. The long tunnel inclined shaft hole entering construction reverse slope drainage system according to claim 5, characterized in that: the slope upper end of filter screen (7) is provided with board (71) of bending, board (71) of bending is set up in sump pit (2) opening edge, works as when the ponding of sump pit (2) overflows, board (71) of bending shifts up and separates with sump pit (2) opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110963941.5A CN113503186A (en) | 2021-08-21 | 2021-08-21 | Long tunnel inclined shaft advances hole construction adverse slope drainage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110963941.5A CN113503186A (en) | 2021-08-21 | 2021-08-21 | Long tunnel inclined shaft advances hole construction adverse slope drainage system |
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| Publication Number | Publication Date |
|---|---|
| CN113503186A true CN113503186A (en) | 2021-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110963941.5A Pending CN113503186A (en) | 2021-08-21 | 2021-08-21 | Long tunnel inclined shaft advances hole construction adverse slope drainage system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113931689A (en) * | 2021-11-11 | 2022-01-14 | 重庆大学 | Drainage and purification system and method for reverse slope tunnel |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08311850A (en) * | 1995-05-18 | 1996-11-26 | Toyo Constr Co Ltd | Removing device for sea floating matter |
| CN104948226A (en) * | 2015-05-26 | 2015-09-30 | 中铁十四局集团第五工程有限公司 | Tunnel counter-slope drainage design method based on water inflow estimation and dynamic monitoring |
| CN105909309A (en) * | 2016-06-14 | 2016-08-31 | 中铁十四局集团有限公司 | Automatic drainage system of long tunnel reverse slope |
| CN208996764U (en) * | 2018-09-04 | 2019-06-18 | 中国水利水电第十四工程局有限公司 | A kind of bored tunnel step automation water plug |
| CN110185493A (en) * | 2019-06-26 | 2019-08-30 | 中铁二十三局集团第三工程有限公司 | Major long tunnel counter-slope drainage and construction method under a kind of complex geological condition |
| CN110410143A (en) * | 2019-07-12 | 2019-11-05 | 中交一公局第四工程有限公司 | A kind of reverse-slope tunnel construction drainage system |
| CN112228152A (en) * | 2020-11-04 | 2021-01-15 | 中铁四局集团第一工程有限公司 | Adverse slope drainage structure suitable for construction of large steep slope tunnel with small section |
| CN212927943U (en) * | 2020-08-24 | 2021-04-09 | 中铁十二局集团第一工程有限公司 | Reverse slope drainage system in open cut tunnel construction process |
-
2021
- 2021-08-21 CN CN202110963941.5A patent/CN113503186A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08311850A (en) * | 1995-05-18 | 1996-11-26 | Toyo Constr Co Ltd | Removing device for sea floating matter |
| CN104948226A (en) * | 2015-05-26 | 2015-09-30 | 中铁十四局集团第五工程有限公司 | Tunnel counter-slope drainage design method based on water inflow estimation and dynamic monitoring |
| CN105909309A (en) * | 2016-06-14 | 2016-08-31 | 中铁十四局集团有限公司 | Automatic drainage system of long tunnel reverse slope |
| CN208996764U (en) * | 2018-09-04 | 2019-06-18 | 中国水利水电第十四工程局有限公司 | A kind of bored tunnel step automation water plug |
| CN110185493A (en) * | 2019-06-26 | 2019-08-30 | 中铁二十三局集团第三工程有限公司 | Major long tunnel counter-slope drainage and construction method under a kind of complex geological condition |
| CN110410143A (en) * | 2019-07-12 | 2019-11-05 | 中交一公局第四工程有限公司 | A kind of reverse-slope tunnel construction drainage system |
| CN212927943U (en) * | 2020-08-24 | 2021-04-09 | 中铁十二局集团第一工程有限公司 | Reverse slope drainage system in open cut tunnel construction process |
| CN112228152A (en) * | 2020-11-04 | 2021-01-15 | 中铁四局集团第一工程有限公司 | Adverse slope drainage structure suitable for construction of large steep slope tunnel with small section |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113931689A (en) * | 2021-11-11 | 2022-01-14 | 重庆大学 | Drainage and purification system and method for reverse slope tunnel |
| CN113931689B (en) * | 2021-11-11 | 2024-03-22 | 重庆大学 | Reverse slope tunnel drainage and purification system and method |
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Application publication date: 20211015 |
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