CN212376694U - Tunnel cold-proof drainage system based on geothermal utilization - Google Patents
Tunnel cold-proof drainage system based on geothermal utilization Download PDFInfo
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- CN212376694U CN212376694U CN202020688314.6U CN202020688314U CN212376694U CN 212376694 U CN212376694 U CN 212376694U CN 202020688314 U CN202020688314 U CN 202020688314U CN 212376694 U CN212376694 U CN 212376694U
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Abstract
The invention relates to a tunnel cold-proof drainage system based on geothermal utilization, which comprises a circumferential blind pipe or strip-shaped water-proof drainage plate, a longitudinal blind pipe, a transverse water guide pipe and a central ditch; the annular blind pipe or strip-shaped water-proof and drainage plate is arranged along the circumference of the tunnel arch wall; the longitudinal blind pipe is arranged at the bottom end of the side wall along the axial direction of the tunnel; the central ditch is axially arranged at the bottom of the center of the tunnel; the transverse water guide pipe is connected between the longitudinal blind pipe and the central ditch, and the crossed node of the circumferential blind pipe or the strip-shaped water-proof and drainage plate, the transverse water guide pipe and the longitudinal blind pipe is downwards connected with the deep hole of the ground source. The invention solves the problems that the tunnel drainage system in cold regions is easy to freeze, block and lose efficacy in a low-temperature environment, utilizes the ground source deep hole to transmit the stratum heat energy to the annular and longitudinal drainage blind pipes in the tunnel, forms heat exchange extension through a heat bridge effect, prevents the blind pipes from freezing, further prevents the whole drainage system from freezing and losing efficacy, does not need to provide a heat source independently, is environment-friendly and energy-saving, and has remarkable effect.
Description
Technical Field
The invention relates to the technical field of tunnel drainage, in particular to a tunnel cold-proof drainage system based on geothermal utilization.
Background
In tunnel engineering, an annular drainage channel and a longitudinal drainage channel are required to be embedded between tunnel lining structures, the annular drainage channel can be communicated with the longitudinal drainage channel, and accumulated water behind tunnel linings is collected to the longitudinal drainage channel and then is drained into ditches at two sides or a central ditch of a tunnel through a transverse water guide pipe; the circumferential drainage channel can also be not communicated with the longitudinal drainage channel, the wall foot is communicated to the ditches at the two sides or the central ditch through the joint, and the longitudinal drainage channel is independently provided with the transverse water guide pipe to be communicated with the ditches at the two sides and the central ditch. Both of the above two ways can form a perfect tunnel drainage system.
The railway tunnel is built in a severe cold/cold area, the requirements on heat preservation and smoothness of a water-proof and drainage system are extremely high, otherwise, the tunnel drainage system fails due to freezing, the tunnel is frozen by accumulated water, and various diseases such as tunnel arch wall ice hanging, lining frost heaving, structure spalling, tunnel bottom ice cone, ditch ice plug, line frost heaving and uplift which affect safe operation and normal use of the structure can be caused. Therefore, in order to solve the problems that the tunnel drainage system in the severe cold/cold area is easy to freeze and block in the environment with lower temperature due to the insufficient arrangement of the anti-freezing system, it is necessary to research and provide an economical and practical tunnel anti-freezing measure with a reasonable structure.
Disclosure of Invention
The invention aims to provide a tunnel cold-proof drainage system based on geothermal utilization, which utilizes a deep hole of a ground source to transfer geothermal heat to a ring and a longitudinal drainage blind pipe in a tunnel so as to prevent the tunnel blind pipe from being frozen and invalid.
The technical scheme adopted by the invention is as follows:
the utility model provides a tunnel winter protection drainage system based on geothermol power utilization which characterized in that:
the system comprises a circumferential blind pipe or a strip-shaped water-proof and drainage plate, a longitudinal blind pipe, a transverse water guide pipe and a central ditch;
the annular blind pipe or strip-shaped water-proof and drainage plate is arranged along the circumference of the tunnel arch wall;
the longitudinal blind pipe is arranged at the bottom end of the side wall along the axial direction of the tunnel;
the central ditch is axially arranged at the bottom of the center of the tunnel;
the transverse water guide pipe is connected between the longitudinal blind pipe and the central ditch, and the crossed node of the circumferential blind pipe or the strip-shaped water-proof and drainage plate, the transverse water guide pipe and the longitudinal blind pipe is downwards connected with the deep hole of the ground source.
When the circumferential blind pipes are arranged on the circumference of the tunnel arch wall, the bottom ends of the circumferential blind pipes are connected into the transverse water guide pipe, the longitudinal blind pipes on the front side and the rear side and the ground source deep hole through the five-way joint.
When the circumference of the tunnel arch wall is provided with the annular blind pipe, the bottom end of the annular blind pipe is connected into the transverse water guide pipe and the ground source deep hole through the vertical tee joint.
When the circumference of the tunnel arch wall is provided with the strip-shaped water-proof and drainage plate, the longitudinal blind pipe is connected into the transverse water guide pipe and the ground source deep hole through the four-way joint.
The longitudinal blind pipe is connected into the transverse water guide pipe through the transverse tee joint, and then is connected into ditches at two sides of the tunnel or a central ditch.
The ground source deep hole is drilled by a drilling machine, and the top end of the ground source deep hole is provided with a hole pipe and a connecting piece.
The orifice pipe adopts a perforated corrugated pipe and is wrapped by non-woven fabrics.
The orifice pipe is communicated with the vertical tee joint, the five-way joint or the four-way joint through a connecting piece.
The ground source deep hole is vertically downwards, horizontally or obliquely drilled.
The invention has the following advantages:
the invention has reasonable structural design, can form effective conduction of heat energy by extracting and communicating the heat energy of the stratum around the tunnel, can solve the problems that a tunnel drainage system in a cold region is easy to freeze and block in a low-temperature environment, and the like, extracts and transmits the constant and inexhaustible stratum heat energy to the ring and the longitudinal drainage blind pipes in the tunnel by utilizing the ground source deep holes, firstly prevents the ring and the longitudinal blind pipes of the tunnel from freezing and losing efficacy, and then transmits the heat energy to the transverse water guide pipes, the water ditches at two sides and the central ditch, ensures the normal operation of the tunnel drainage system, does not need to separately provide a heat source or heat supply equipment, has low operation cost, is green and environment-friendly, saves energy and is reliable, and has obvious effect.
Drawings
FIG. 1 is a cross-sectional view of the present invention.
FIG. 2 is a cross-sectional view of the two side channels of the present invention
FIG. 3 is a schematic view of the five-way and the transverse three-way connection with the annular blind pipe.
FIG. 4 is a schematic view of the connection between a vertical tee and a horizontal tee with annular blind pipes.
FIG. 5 is a schematic view showing the connection between a cross joint and a transverse cross joint provided with a strip-shaped water-proof and drainage plate.
Fig. 6 is a large sample graph of the connected nodes.
In the figure, 1-annular blind pipe, 2-longitudinal blind pipe, 3-transverse water guide pipe, 4-ground source deep hole, 5-inner rail top surface, 6-central ditch, 7-two side ditches, 8-vertical tee joint, 9-five-way joint, 10-transverse tee joint, 11-connecting piece, 12-orifice pipe, 13-four-way joint and 14-strip-shaped water-proof and drainage plate.
Detailed Description
The present invention will be described in detail with reference to specific embodiments.
The invention relates to a tunnel cold-proof drainage system based on geothermal utilization, which considers that a tunnel is basically positioned in a rock mass or a stratum with relatively stable ground temperature, part of a large buried tunnel is also provided with high ground temperature and other conditions, the conditions are constant and good heat sources, the mouth part and the tunnel body of the tunnel in a high-altitude or high-latitude severe cold/cold area are frozen in different degrees under the influence of low temperature in a certain range, and the problem of local freezing injury of the tunnel is solved by using the heat energy of the stratum, namely, ground source deep holes are used for extracting and transmitting the heat energy of the stratum to a ring and a longitudinal drainage blind pipe in the tunnel, and the heat energy is transmitted to areas such as a transverse water guide pipe, two side ditches, a central ditch and the like by using a heat transmission effect, so that the tunnel drainage system is. The measures are effective, the environment is protected, and a tunnel cold-proof drainage system based on geothermal utilization is formed finally.
The invention relates to a tunnel cold-proof drainage system based on geothermal utilization, which utilizes a deep hole of a ground source to transfer geothermal heat to a ring-shaped and longitudinal drainage blind pipe in a tunnel, thereby preventing the tunnel blind pipe from being frozen and invalid. The system comprises a circumferential blind pipe 1 or a strip-shaped water-proof and drainage plate, a longitudinal blind pipe 2, a transverse water guide pipe 3 and a central ditch 6. The annular blind pipe 1 is arranged along the circumference of the tunnel arch wall, and the annular blind pipe 1 can be replaced by the strip-shaped water-proof and drainage plate 14. The longitudinal blind pipes 2 are arranged at the bottom ends of the side walls on the two sides along the axial direction of the tunnel; the central ditch 6 is arranged at the bottom of the center of the tunnel; the transverse water guide pipe 3 is connected between the annular blind pipe 1 and the central ditch 6, or the transverse water guide pipe 3 is connected between the annular blind pipe 1, the ditches 7 at two sides and the central ditch 6; the junction of the annular blind pipe 1, the transverse water guide pipe 3 and the longitudinal blind pipe 2 is downwards connected into the ground source deep hole 4.
The connection of various pipes of the tunnel drainage system can be realized in the following ways:
referring to fig. 3, when the annular blind pipe 1 is arranged in the annular direction, the annular blind pipe 1, the transverse water guide pipe 3, the longitudinal blind pipes 2 at the front side and the rear side and the ground source deep hole 4 are connected with each other through a five-way pipe 9. Considering the influence of the longitudinal distance of the annular blind pipes 1, the longitudinal blind pipes 2 are connected into the transverse water guide pipes 3 at intervals through the transverse tee joints 10, and then are connected into ditches 7 at two sides of the tunnel or a central ditch 6.
Referring to fig. 4, when the annular blind pipe 1 is arranged in the annular direction, the annular blind pipe 1, the transverse water guide pipe 2 and the ground source deep hole 4 are connected with each other through the vertical tee joint 8. Considering the influence of the longitudinal distance of the annular blind pipes 1, the longitudinal blind pipes 2 are connected into the transverse water guide pipes 3 at intervals through the transverse tee joints 10, and then are connected into ditches 7 at two sides of the tunnel or a central ditch 6.
Referring to fig. 5, when the strip-shaped water-proof and drainage plate 14 is arranged in the circumferential direction, namely the strip-shaped water-proof and drainage plate 14 is arranged in the tunnel to replace the circumferential blind pipe 1, the width of the strip-shaped water-proof and drainage plate 14 is different from 30-50 cm, the interval is arranged in the same circumferential direction as the circumferential blind pipe 1, or the fully paved tunnel water-proof and drainage plate can be adopted. The longitudinal blind pipe 2, the transverse water guide pipe 3 and the ground source deep hole 4 are connected with each other through a four-way joint 13. Considering the influence of the longitudinal distance of the strip-shaped water-proof and drainage plates 14, the longitudinal blind pipes 2 are connected into the transverse water guide pipes 3 at intervals through the transverse tee joints 10, and then are connected into the ditches 7 at the two sides of the tunnel or the central ditch 6.
The ground source deep hole 4 is formed by drilling in the hole, and the top end of the ground source deep hole 4 is provided with an orifice pipe 12, which is generally a perforated corrugated pipe and can be wrapped with non-woven fabrics for preventing blockage. The orifice pipe 12 is connected into the vertical tee joint 8, the four-way joint 13 or the five-way joint 9 through the connecting piece 11, and then communicated with the annular blind pipe 1, the longitudinal blind pipe 2 and the transverse water guide pipe 3. The implementation angle of the ground source deep hole 4 can be horizontal, vertical or a certain angle; the implementation depth of the ground source deep hole 4 is determined according to the actual situation of the tunnel site, the depth range can be 3-10 m, or the depth range can be determined comprehensively according to the geographic position of the tunnel, the climate condition, the stratum lithology, the development condition of underground water, the ground temperature condition, the implementation condition in the tunnel and the like.
All the components mentioned in the system can adopt the common equipment in the field, and the equipment capable of realizing the functions meets the requirements.
The construction method of the tunnel cold-proof drainage system based on geothermal utilization mainly comprises the following steps:
after the primary support construction of the tunnel is completed and basically stable, firstly drilling a ground source deep hole 4 in a drilling machine hole opening mode;
pushing the orifice pipe 12 into the top of the ground source deep hole 4, and finishing the installation of the orifice pipe 12 and the connecting piece 11;
according to the setting requirement, a five-way 9 can be adopted to connect the ground source deep hole 4 with the annular blind pipe 1, the longitudinal blind pipe 2 and the transverse water guide pipe 3, and the longitudinal blind pipe 2 is connected into the transverse water guide pipe 3 through a transverse three-way 10 at intervals so as to be connected into ditches 7 at two sides or a central ditch 6 of the tunnel;
according to the setting requirement, a vertical tee joint 8 can be adopted to connect the ground source deep hole 4 with the annular blind pipe 1 and the transverse water guide pipe 3, and the longitudinal blind pipe 2 is connected into the transverse water guide pipe 3 through the transverse tee joint 10 at intervals, so that the tunnel is connected into the ditches 7 at two sides or the central ditch 6;
according to the setting requirement, if the strip-shaped water-proof and drainage plate 14 is arranged on the tunnel, a cross joint 13 can be adopted to connect the ground source deep hole 4 with the longitudinal blind pipe 2 and the transverse water guide pipe 3, and the longitudinal blind pipe 2 is connected into the transverse water guide pipe 3 through the transverse tee joint 10 at intervals, so that the water ditches 7 on the two sides of the tunnel or the central ditch 6 are connected.
The invention is not limited to the examples, and any equivalent changes to the technical solution of the invention by a person skilled in the art after reading the description of the invention are covered by the claims of the invention.
Claims (9)
1. The utility model provides a tunnel winter protection drainage system based on geothermol power utilization which characterized in that:
the system comprises a circumferential blind pipe (1) or a strip-shaped water-proof and drainage plate (14), a longitudinal blind pipe (2), a transverse water guide pipe (3) and a central ditch (6);
the annular blind pipe (1) or the strip-shaped water-proof and drainage plate (14) is arranged along the circumference of the tunnel arch wall;
the longitudinal blind pipe (2) is arranged at the bottom end of the side wall along the axial direction of the tunnel;
the central ditch (6) is axially arranged at the bottom of the center of the tunnel;
the transverse water guide pipe (3) is connected between the longitudinal blind pipe (2) and the central ditch (6), and the crossed joint of the annular blind pipe (1) or the strip-shaped water-proof and drainage plate (14), the transverse water guide pipe (3) and the longitudinal blind pipe (2) is downwards connected with the ground source deep hole (4).
2. A tunnel cold-proof drainage system based on geothermal utilization as claimed in claim 1, wherein:
when the circumferential blind pipe (1) is arranged on the circumference of the tunnel arch wall, the bottom end of the circumferential blind pipe (1) is connected with the transverse water guide pipe (3), the longitudinal blind pipes (2) on the front side and the rear side and the ground source deep hole (4) through the five-way joint (9).
3. A tunnel cold-proof drainage system based on geothermal utilization as claimed in claim 1, wherein:
when the circumferential blind pipe (1) is arranged on the circumference of the tunnel arch wall, the bottom end of the circumferential blind pipe (1) is connected into the transverse water guide pipe (3) and the ground source deep hole (4) through the vertical tee joint (8).
4. A tunnel cold-proof drainage system based on geothermal utilization as claimed in claim 1, wherein:
when the circumference of the tunnel arch wall is provided with the strip-shaped water-proof and drainage plate (14), the longitudinal blind pipe (2) is connected with the transverse water guide pipe (3) and the ground source deep hole (4) through the four-way joint (13).
5. A tunnel cold-proof drainage system based on geothermal utilization according to claim 2, 3 or 4, characterized in that:
the longitudinal blind pipe (2) is connected into the transverse water guide pipe (3) through a transverse tee joint (10) and then is connected into ditches (7) at two sides of the tunnel or a central ditch (6).
6. A tunnel winter protection drainage system based on geothermal utilization according to claim 5, characterized in that:
the ground source deep hole (4) is drilled by a drilling machine, and the top end of the ground source deep hole is provided with a hole pipe (12) and a connecting piece (11).
7. A tunnel winter protection drainage system based on geothermal utilization according to claim 6, characterized in that:
the orifice pipe (12) adopts a perforated corrugated pipe and is externally coated with non-woven fabrics.
8. A tunnel winter protection drainage system based on geothermal utilization according to claim 7, characterized in that:
the orifice pipe (12) is communicated with a vertical tee joint (8), a five-way joint (9) or a four-way joint (13) through a connecting piece (11).
9. A tunnel winter protection drainage system based on geothermal utilization according to claim 8, characterized in that:
the ground source deep hole (4) is vertically downwards, horizontally or obliquely arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202020688314.6U CN212376694U (en) | 2020-04-29 | 2020-04-29 | Tunnel cold-proof drainage system based on geothermal utilization |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020688314.6U CN212376694U (en) | 2020-04-29 | 2020-04-29 | Tunnel cold-proof drainage system based on geothermal utilization |
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| CN212376694U true CN212376694U (en) | 2021-01-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111535856A (en) * | 2020-04-29 | 2020-08-14 | 中铁第一勘察设计院集团有限公司 | Tunnel cold-proof drainage system based on geothermal utilization and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111535856A (en) * | 2020-04-29 | 2020-08-14 | 中铁第一勘察设计院集团有限公司 | Tunnel cold-proof drainage system based on geothermal utilization and construction method thereof |
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