CN217380649U - Water drainage structure of water-rich karst double-line tunnel by utilizing horizontal guide - Google Patents
Water drainage structure of water-rich karst double-line tunnel by utilizing horizontal guide Download PDFInfo
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- CN217380649U CN217380649U CN202221541481.3U CN202221541481U CN217380649U CN 217380649 U CN217380649 U CN 217380649U CN 202221541481 U CN202221541481 U CN 202221541481U CN 217380649 U CN217380649 U CN 217380649U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The utility model discloses a rich water karst double-line tunnel utilizes flat to lead and sluices the structure, and the sluicing structure to positive hole B line side is: arranging a transverse drainage channel at the position of the water gushing point and connecting the transverse drainage channel to the horizontal guide drainage ditch; the water draining structure for water gushing below the arch camber line at the line A side of the main tunnel is as follows: the method comprises the steps of excavating a J1 drainage gallery more than 15m along a karst pipeline, reserving a manway access hole at one side of the J1 drainage gallery close to a line A, excavating the J1 drainage gallery far away from the line A and arranging a drop sill corresponding to a water outlet, arranging a grit chamber at the lower end of the drop sill, and connecting the grit chamber to a horizontal guide drainage ditch through an artificial culvert positioned below a main tunnel; the water discharge structure for water gushing above the arch wire at the side of the main tunnel line A is as follows: the drainage pipe is used for connecting water gushing points above the arch wires to a J2 drainage gallery at a position above 15m inside the side of the A line. Can carry out the water damage fast and handle, ensure high efficiency excavation and later stage safe and reliable operation, reduce the construction volume, it is safe high-efficient.
Description
Technical Field
The utility model relates to a tunnel construction structure, the water-rich karst double-line tunnel of specifically being applicable to utilizes flat to lead and sluices the structure.
Background
With the rapid development of national economy, the traffic infrastructure level is continuously mentioned. The tunnel is taken as a very important component in the field of transportation, the trend towards 'long, big and deep' is rapidly improved, and particularly for the water-rich karst tunnel, various water damage problems encountered in the construction process and after the tunnel is put into operation are key consideration factors for the construction of the water-rich karst tunnel. Although related researches exist in the industry at present, the problems of rapid and efficient excavation and later-period safe and reliable operation of the water-rich long tunnel cannot be fundamentally solved because the conventional waterproof treatment means are adopted.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a structure of rich water karst double-line tunnel is exclusively used in can carry out the water damage fast and handle, ensures high efficiency excavation and later stage safe and reliable operation.
Therefore, the utility model discloses the technical scheme who adopts does: a water drainage structure of a water-rich karst double-line tunnel by using a flat conductor is characterized in that the water drainage structure of the water-rich karst double-line tunnel adopts a single-hole double-line structure, the length of the water-rich karst double-line tunnel is more than 20km, one side far away from the flat conductor is a tunnel line A, and one side close to the flat conductor is a tunnel line B;
the drainage structure on the B line side of the main tunnel is as follows: arranging a transverse drainage channel at the position of the water gushing point and connecting the transverse drainage channel to the horizontal guide drainage ditch; the water draining structure for water gushing below the arch camber line at the line A side of the main tunnel is as follows: the method comprises the steps of excavating a J1 drainage gallery more than 15m along a karst pipeline, reserving a manway access hole at one side of the J1 drainage gallery close to a line A, excavating the J1 drainage gallery far away from the line A, arranging a drop sill corresponding to a water outlet, arranging a grit chamber at the lower end of the drop sill, and connecting the grit chamber to a horizontal guide drainage ditch through an artificial culvert positioned below a main tunnel; the water discharge structure for water gushing above the arch wire at the side of the main tunnel line A is as follows: the drainage pipe is used for connecting a water burst point above a camber line to a J2 drainage gallery at a position above 15m inside a line A side, a manway access hole is reserved in the J2 drainage gallery close to the line A side, the J2 drainage gallery is excavated at a side far away from the line A side and is provided with a drop sill, the lower end of the drop sill is provided with a grit chamber, and the grit chamber is connected to a horizontal guide drainage ditch through an artificial culvert positioned below a main tunnel; the flat guide turns at a position 30-50 m in front of and behind a water gushing point to form a gushing avoidance horizontal guide section parallel to an original flat guide non-excavation section; the tunnel main tunnel and the horizontal tunnel both adopt a herringbone slope structure, and each water burst point adopts downslope drainage.
Preferably, in the drainage structure on the side of the main tunnel line B, a grit chamber is further provided directly below the position of the water gushing point, and the grit chamber is located at the front end of the lateral drainage channel.
Preferably, the artificial culvert adopts a frame culvert or a round culvert.
Further preferably, the drainage tube is laid in the concrete retaining wall by adopting a phi 100cmHDPE tube.
More preferably, the distance between the J1 drainage gallery and the J2 drainage gallery and the inner wall of the main tunnel is 18m, the length of a reserved manway access hole is 5m, and the depth of the grit chamber is 2m and the width of the grit chamber is 5 m.
More preferably, the width of the drop sill is 4m, the height of the drop sill is 3m, and the drop sill is a 4-6-grade drop.
More preferably, the width of the horizontal guide drainage ditch is 3m, and the depth of the horizontal guide drainage ditch is 1.3-1.4 m.
The utility model has the advantages that:
(1) to sluicing structure, be divided into main tunnel B line side and main tunnel A line side, main tunnel A line side divide into again and gush water below the arch wire and gush water above the arch wire, divide the condition to handle, and the maximize reduces the construction volume, guarantees to sluicing timely high-efficient, can ensure later stage operation in-process simultaneously and gush water in time to discharge.
(2) In the sluicing structure, add drainage corridor, reserve manway access hole, drop bank, grit chamber and artifical culvert, will sluicing leads to the drainage ditch of leading through artifical culvert in the underground, the function is reliable, overhauls conveniently, and the drainage is timely, can prevent the silt stifled that silt is too much caused.
(3) When the horizontal guide construction is carried out, in order to avoid overlarge water burst points, the turning structure is adopted for avoiding roundabout construction, the design is ingenious, and smooth and safe propulsion of construction is guaranteed on the basis of not increasing excessive construction amount.
(4) Tunnel main tunnel and flat lead all adopt the herringbone slope structure, and every water inflow point adopts the drainage of following slope, if meet a large amount of water inflow in the later stage operation, do not need artifical suction pump to assist the drainage, compare the adverse slope drainage advantage obvious.
Drawings
Fig. 1 is a drainage structure of a water-rich karst double-line tunnel.
Fig. 2 shows a drainage structure for water gushing below the arch line on the main tunnel line a side.
Fig. 3 shows a common drainage structure having water gushes both above and below the arch line on the side of the main tunnel line a.
Detailed Description
The invention will be further described by way of examples with reference to the accompanying drawings:
the double-line tunnel for the water-rich karst shown in figure 1 adopts a single-hole double-line structure, wherein one side far away from a flat conductor C is a tunnel line A, one side close to the flat conductor C is a tunnel line B, and the length of the tunnel is more than 20 km.
The water gushing at the side of the line A of the main tunnel is divided into water gushing below the arch wire and water gushing above the arch wire. The water discharge structure for water gushing below the arch wire is as follows: referring to fig. 1-3, the method comprises the step of excavating a J1 drainage gallery 1 with a depth of more than 15m along a karst pipeline, wherein the excavation needs to be performed along the karst pipeline in advance to form enough space for arranging a reserved manway access hole 2, a drop sill 3 and a grit chamber 8. A manway access hole 2 is reserved on one side of the J1 drainage gallery 1 close to the line A, and convenience is brought to personnel for maintenance. And a drop sill 3 corresponding to a water outlet is arranged on the side of the J1 drainage gallery 1 far away from the line A, a grit chamber 8 is arranged at the lower end of the drop sill 3, and the drop sill is connected to the horizontal drainage guide channel 5 through an artificial culvert 4 positioned below the main tunnel.
As shown in fig. 3, the water drainage structure for water gushing above the arch wire on the side of the main tunnel line a is as follows: comprises a drainage pipe 6 embedded in a concrete retaining wall of a main tunnel, wherein the drainage pipe 6 is used for connecting water gushing above an arch wire to a J2 drainage gallery 7 at a position of more than 15m inside the side of the A line. A manway access hole 2 is reserved on the side of the J2 drainage corridor 7 close to the line A. The side of the J2 drainage gallery 7, which is far away from the line A, is enlarged and dug and is provided with a drop sill 3, the lower end of the drop sill 3 is provided with a grit chamber 8, and the grit chamber is connected to the horizontal guide drainage ditch 5 through an artificial culvert 4 positioned below the main tunnel. During concrete construction, the tunnel is still to be excavated along the karst pipeline to find the water burst point above the arch line, the water burst point of the arch part is blocked after the drainage tube 6 is installed, and the drainage tube 6 drains the water burst point of the arch part to the J2 drainage gallery 7. If water gushes above the arch wire and below the arch wire exist on the same section of the side of the main tunnel A, the two gushes share the same drainage gallery, water drop sill, grit chamber and artificial culvert, so as to further simplify the structure.
Because the main tunnel B line is close to the flat guide C, the drainage structure at the side of the main tunnel B line is as follows: a transverse drainage channel is arranged at the position of the water gushing point and is directly connected to the horizontal guide drainage ditch 5, so that the structure is simple; preferably, a grit chamber 8 is also provided directly below the point of water gush, the grit chamber 8 being located at the front end of the lateral drainage channel.
As shown in fig. 1, during the construction process of the horizontal guide C, a large water inrush point also occurs, which constitutes a great potential safety hazard for constructors, and the traditional treatment method is to pump water through drilling. The utility model discloses an avoid greatly gushing the water spot and be under construction, lead the section C1 that does not excavate as former flat, do not excavate the construction. Turning at the position 30-50 m before and after the water inrush point to form an avoiding surge horizontal guide section C2 parallel to the original horizontal guide trenchless section C1; the tunnel main tunnel and the horizontal guide C are of herringbone slope structures, each water inflow point adopts down slope drainage, a water suction pump is not needed in the whole water drainage structure, and the problems of large workload, high cost and low efficiency caused by reverse slope drainage are solved.
The artificial culvert 4 is preferably a frame culvert or a round culvert, the drainage pipe 6 is laid in a concrete retaining wall by adopting a phi 100cmHDPE pipe, the J1 drainage galleries 1 and J2 drainage galleries 7 are 18m away from the inner wall of the main tunnel, the length of a manway access opening 2 is reserved for 5m, the depth of a grit chamber 8 is 2m, the width of the grit chamber is 5m, the width of a drop sill is 3m, the height of the drop sill is 3m, and the level of 4-6 drop is realized, but the limit is not limited.
Claims (7)
1. The utility model provides a two-line tunnel of rich water karst utilizes flat to lead and sluices structure, two-line tunnel of rich water karst adopts single hole double-line structure, and length is greater than 20km, and the one side of keeping away from flat lead (C) is tunnel A line, and the one side that is close to flat lead (C) is tunnel B line which characterized in that:
the drainage structure on the B line side of the main tunnel is as follows: a transverse drainage channel is arranged at the position of the water gushing point and is connected to the horizontal guide drainage ditch (5); the water draining structure for water gushing below the arch camber line at the line A side of the main tunnel is as follows: the method comprises the steps of excavating a J1 drainage gallery (1) more than 15m along a karst pipeline, reserving a manway access hole (2) at one side of the J1 drainage gallery (1) close to an A line, excavating the J1 drainage gallery (1) far away from the A line in an expanding manner, arranging a drop sill (3) corresponding to a water outlet, arranging a grit chamber (8) at the lower end of the drop sill (3), and connecting the lower end of the drop sill to a horizontal guide drainage ditch (5) through an artificial culvert (4) positioned below a main tunnel; the water discharge structure for water gushing above the arch wire at the side of the main tunnel line A is as follows: the drainage pipe (6) is buried in a main tunnel concrete retaining wall, the drainage pipe (6) is used for connecting a water burst point above an arch lifting line to a J2 drainage gallery (7) at a position above 15m in the line A side, a manway access hole (2) is reserved in the J2 drainage gallery (7) close to the line A side, the J2 drainage gallery (7) is expanded and excavated far away from the line A side and is provided with a drop sill (3), a grit chamber (8) is arranged at the lower end of the drop sill (3), and then the grit chamber is connected to a horizontal guide drainage ditch (5) through an artificial culvert (4) positioned below the main tunnel; the horizontal guide (C) turns at the position 30-50 m before and after the water inrush point to form an avoiding surge horizontal guide section (C2) which is parallel to the original horizontal guide trenchless section (C1); the tunnel main tunnel and the horizontal guide (C) both adopt a herringbone slope structure, and each water inrush point adopts downslope drainage.
2. The water-rich karst double-track tunnel of claim 1, draining structure using a horizontal drainage pipe, wherein: for the drainage structure on the B line side of the main tunnel, a grit chamber (8) is arranged right below the position of the water burst point, and the grit chamber (8) is positioned at the front end of the transverse drainage channel.
3. The water-rich karst double-line tunnel of claim 1, wherein the water drainage structure is formed by using a horizontal guide, and the water drainage structure comprises: the artificial culvert (4) adopts a frame culvert or a round culvert.
4. The water-rich karst double-line tunnel of claim 1, wherein the water drainage structure is formed by using a horizontal guide, and the water drainage structure comprises: the drainage tube (6) is laid in the concrete retaining wall by adopting a phi 100cmHDPE tube.
5. The water-rich karst double-line tunnel of claim 1, wherein the water drainage structure is formed by using a horizontal guide, and the water drainage structure comprises: the J1 drainage gallery (1) and the J2 drainage gallery (7) are 18m away from the inner wall of the main tunnel, the length of the reserved manway access hole (2) is 5m, and the depth of the grit chamber (8) is 2m and the width of the grit chamber is 5 m.
6. The water-rich karst double-line tunnel of claim 1, wherein the water drainage structure is formed by using a horizontal guide, and the water drainage structure comprises: the width of the drop sill (3) is 4m, the height of the drop sill (3) is 3m, and the drop sill is a 4-6-level drop.
7. The water-rich karst double-line tunnel of claim 1, wherein the water drainage structure is formed by using a horizontal guide, and the water drainage structure comprises: the horizontal guide drainage ditch (5) is 3m wide and 1.3-1.4 m deep.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221541481.3U CN217380649U (en) | 2022-06-20 | 2022-06-20 | Water drainage structure of water-rich karst double-line tunnel by utilizing horizontal guide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221541481.3U CN217380649U (en) | 2022-06-20 | 2022-06-20 | Water drainage structure of water-rich karst double-line tunnel by utilizing horizontal guide |
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| Publication Number | Publication Date |
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| CN217380649U true CN217380649U (en) | 2022-09-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221541481.3U Active CN217380649U (en) | 2022-06-20 | 2022-06-20 | Water drainage structure of water-rich karst double-line tunnel by utilizing horizontal guide |
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| Country | Link |
|---|---|
| CN (1) | CN217380649U (en) |
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2022
- 2022-06-20 CN CN202221541481.3U patent/CN217380649U/en active Active
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