CN217152022U - Tunnel temperature control drainage structure device based on shallow geothermal energy - Google Patents
Tunnel temperature control drainage structure device based on shallow geothermal energy Download PDFInfo
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- CN217152022U CN217152022U CN202220487474.3U CN202220487474U CN217152022U CN 217152022 U CN217152022 U CN 217152022U CN 202220487474 U CN202220487474 U CN 202220487474U CN 217152022 U CN217152022 U CN 217152022U
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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
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Abstract
The utility model discloses a tunnel temperature control drainage structure device based on shallow geothermal energy, which comprises a permeable anchor rod, a temperature control drainage plate, permeable geotextile, waterproof geotextile, a temperature sensor, a drainage pipe and a drainage ditch; the permeable concrete is injected into the periphery of the anchor rod to gather the surrounding rock of the tunnel for water seepage, the temperature control drainage plate is used for heating to improve the permeability of the rock-soil body, and the drainage pipeline is used for longitudinal water collection of the tunnel and is finally discharged in the drainage ditch in a unified mode. The anchor rod can collect surrounding rock seepage water besides the conventional supporting function, and the temperature control drainage plate improves the permeability coefficient of the rock-soil body by controlling the temperature on the basis of meeting the mechanical property, insulativity and corrosion resistance required by the construction environment, so that the drainage rate of the surrounding rock seepage water is accelerated. The renewable energy of shallow geothermal energy is utilized to provide the energy demand of the temperature control drainage plate, and the energy-saving, environment-friendly and green engineering is realized. The utility model discloses a simple structure, construction convenience, durable practicality have effectively reduced the engineering safety risk that tunnel country rock infiltration brought.
Description
Technical Field
The utility model relates to a tunnel drainage structures device especially relates to a tunnel control by temperature change drainage structures device based on shallow geothermal energy, is mainly applicable to shallow geothermal energy and utilizes and tunnel engineering calamity prevention and cure technical field.
Background
Tunnel engineering in China is usually under extremely complex surrounding rock conditions, underground water is developed abundantly, and drainage requirements are high. However, due to the uneven construction quality, drainage measures are not implemented in place, so that the problems of water seepage or water inrush of a plurality of tunnels are serious, and a serious challenge is brought to engineering safety.
The seepage water on the top and the side wall of the conventional railway/highway tunnel and subway tunnel can generally flow down along the tunnel wall and can be discharged through a drainage ditch; for tunnel projects employing composite lining, drainage facilities are often arranged between primary supports and secondary lining, including circumferential drainage pipes, transverse drainage pipes, longitudinal drainage pipes and central gutters, for draining tunnel seepage water. The permeability of partial soil around the tunnel is poor, the drainage efficiency is relatively insufficient by adopting the method, so that the water pressure around the tunnel continuously rises, the problems of cracking and water burst of the tunnel are caused, and the normal operation and safety of the tunnel are seriously influenced. Therefore, the development of a tunnel drainage structure device which can improve the permeability coefficient of soil around a tunnel and increase the drainage efficiency is particularly urgent. The shallow geothermal energy is taken as a renewable energy source, and is particularly necessary to be used for preventing and controlling water damage in tunnel engineering.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: for solving the technical problem that exists among the prior art, the utility model provides an utilize shallow geothermal energy, improve the peripheral soil body osmotic coefficient in tunnel through the control by temperature change drain bar, increase drainage efficiency's tunnel drainage structure device.
In order to achieve the aim, the utility model provides a tunnel temperature control drainage structure device based on shallow geothermal energy, which comprises a permeable anchor rod, a temperature control drainage plate, a permeable geotextile, a waterproof geotextile, a temperature sensor, a drainage pipe and a drainage ditch; the water-permeable anchor rods are composed of anchor rods and water-permeable concrete wrapped around the anchor rods, and the water-permeable anchor rods are arranged at intervals along the longitudinal direction of the tunnel; the temperature control drainage plate is formed by wrapping a heat exchange tube or a resistance wire with an insulating layer at the interlayer of the plastic drainage plate; the permeable geotextiles are arranged in the range of 10-20 cm on two sides of the permeable anchor rod and on the outer sides of the temperature control drain plates; the temperature sensor is arranged on the central axis of the tunnel in a manner of clinging to the temperature control drainage plate; the waterproof geotextile is arranged at the gap of the permeable geotextile and is overlapped with the permeable geotextile; the drain pipes are symmetrically arranged below the temperature control drain plates on the two sides of the tunnel; the escape canal interval sets up in the tunnel lower part, and the escape canal is linked together with the drain pipe, will seep water discharge tunnel. Preferably, longitudinal drain pipes are symmetrically laid on the lower portion of the tunnel, and holes are punched in the upper portion of the drain pipes below the temperature-controlled drain plates and used for collecting water seepage drained by the drain plates. The tunnel separates the certain distance and sets up the horizontal escape canal, and the escape canal links to each other with vertical drain pipe, will seep water and discharge the tunnel.
Wherein, the total diameter of the stock that permeates water is 2~3 times of stock diameter, and the stock length is 5~10 m, and the stock length that permeates water is longer 15~20 cm than the stock.
The permeable anchor rod is arranged at intervals of 2-5 m along the longitudinal direction of the tunnel in a circle, and 2-3 permeable anchor rods are arranged at intervals of 1m along the circumference of each circle.
The width of the temperature control drain board is 10-20 cm, the thickness of the temperature control drain board is 4.5-6.0 mm, the thickness of the middle interlayer is 1-2 mm, and the longitudinal water flow is 40-50 cm 3 The permeability coefficient of the filter membrane is 5-8 multiplied by 10 < -4 > cm/s, the equivalent aperture of the filter membrane is 70-75 mu m, and the tensile strength (dry state) of the complex is 1.5-1.8 kN/10 cm.
Preferably, the diameter of the resistance wire is 0.5-1.5 mm, the resistance value is 5.551-0.01629 omega/m at 20 ℃, and the resistance wire and the temperature sensor are connected to a temperature control switch and alternating current.
Preferably, the heat exchange tube selects high-strength PE pipe, the external diameter is 25mm, the internal diameter is 20mm, every row of the heat exchange tube is arranged with a circle of the permeable anchor rod, every 3~4 rows of the heat exchange tube are arranged with 1 water pump, the heat exchange tube penetrates the permeable anchor rod in the process of routing to absorb the shallow geothermal energy. The heat exchange tube is connected to the temperature control switch and the water pump.
Preferably, the permeability coefficient of the permeable geotextile is 58-100 cm/s.
The lapping length of the waterproof geotextile and the permeable geotextile is 5-10 cm.
The diameter of the drain pipe is 5-10 cm, a water permeable hole is arranged on the upper side of the drain pipe below the temperature control drain plate at an interval of 5-10 cm, and the aperture is 5-20 mm.
The measurement range of the temperature sensor is-10-70 ℃, and the measurement precision is 0.5-0.1 ℃.
Has the advantages that: compared with the prior art, the utility model discloses a surrounding rock infiltration can still be collected except that the conventional effect of strutting to the stock, and the control by temperature change drain bar improves ground body osmotic coefficient through controlled temperature on the basis of mechanical properties, insulating nature, the corrosion resistance that has satisfied the construction environment requirement for the discharge rate of surrounding rock infiltration. The renewable energy of shallow geothermal energy is utilized to provide the energy demand of the temperature control drainage plate, and the energy-saving, environment-friendly and green engineering is realized. The utility model discloses a simple structure, construction convenience, durable practicality have effectively reduced the engineering safety risk that tunnel country rock infiltration brought.
Drawings
FIG. 1 is a sectional view of a tunnel temperature-controlled drainage structure device using heat exchange tubes;
FIG. 2 is a schematic side view of a tunnel temperature-controlled drainage structure device using heat exchange tubes;
FIG. 3 is a sectional view of a tunnel temperature-controlled drainage structure device using resistance wires;
FIG. 4 is a schematic side wall view of a tunnel temperature-controlled drainage structure device using resistance wires;
FIG. 5 is a cross-sectional view of a temperature controlled drain plate.
Wherein, 1 is the stock, 2 is pervious concrete, 3 is temperature sensor, 4 are the geotechnological cloth that permeates water, 5 are the heat exchange tube, 6 are control by temperature change drain bar, 7 are the drain pipe, 8 are temperature detect switch, 9 are the alternating current, 10 are waterproof geotechnological cloth, 11 are the escape canal, 12 are the hole on the drain pipe, 13 are the water pump, 14 are the resistance wire.
Detailed Description
The present invention will be described in further detail with reference to specific examples, which will help understanding the present invention, but the scope of the present invention is not limited to the following examples.
As shown in fig. 1 to 5, the present embodiment provides a tunnel temperature-controlled drainage structure device based on shallow geothermal energy, which includes a water-permeable anchor rod, a temperature-controlled drainage plate 6, a water-permeable geotextile 4, a waterproof geotextile 10, a temperature sensor 3, a drainage pipe 7 and a drainage ditch 11. The water-permeable anchor rod is composed of an anchor rod 1 and water-permeable concrete 2 wrapped around the anchor rod, and the water-permeable anchor rod is arranged at intervals along the longitudinal direction of the tunnel. The temperature control drainage plate 6 is formed by wrapping a heat exchange tube or a resistance wire with an insulating layer at the interlayer of the plastic drainage plate; the permeable geotextile is arranged in the range of 10-20 cm at two sides of the permeable anchor rod (namely, the blank parts at two sides of the anchor rod in the figure 2) and at the outer side of the temperature control drain plate, and the permeability coefficient of the permeable geotextile is 58-100 cm/s. The total diameter of the stock that permeates water is 2~3 times of stock diameter, and the stock length is 5~10 m, and the stock length that permeates water is longer 15~20 cm than the stock (the concrete that permeates water promptly is higher than the length of stock). The permeable anchor rods are arranged at intervals of 2-5 m along the longitudinal direction of the tunnel in a circle, and 2-3 permeable anchor rods are arranged at intervals of 1m along the circumference of each circle.
The temperature sensor is arranged on the central axis of the tunnel in a manner of clinging to the temperature control drainage plate, the measurement range of the temperature sensor is-10-70 ℃, and the measurement precision is 0.5-0.1 ℃. The waterproof geotextile is arranged at the gap of the permeable geotextile and is overlapped with the permeable geotextile, and the overlapping length of the waterproof geotextile and the permeable geotextile is 5-10 cm; the drain pipes are symmetrically arranged below the temperature-controlled drain plates on two sides of the tunnel, the diameter of each drain pipe is 5-10 cm, water permeable holes are arranged on the upper sides of the drain pipes below the temperature-controlled drain plates at intervals of 5-10 cm, and the hole diameter is 5-20 mm; the drainage ditches (11) are arranged at the lower part of the tunnel at intervals, and the drainage ditches (11) are communicated with the drainage pipe (7) to drain the seepage water out of the tunnel.
The width of the temperature control drainage plate 6 is 10-20 cm, the thickness is 4.5-6.0 mm, the thickness of the middle interlayer is 1-2 mm, the longitudinal water flow is 40-50 cm3/s, the permeability coefficient of the filter membrane is 5-8 multiplied by 10 < -4 > cm/s, the equivalent aperture of the filter membrane is 70-75 mu m, and the tensile strength (dry state) of the complex is 1.5-1.8 kN/10 cm. When the temperature-control drainage plate 6 is formed by processing a resistance wire with an insulating layer at the interlayer of the plastic drainage plate, the diameter of the resistance wire is 0.5-1.5 mm, and the resistance value is 5.551-0.01629 omega/m at 20 ℃.
When the temperature control drain board 6 is used for wrapping the heat exchange tube at the middle interlayer of the plastic drain board, the heat exchange tube is a high-strength PE tube, the outer diameter is 25mm, the inner diameter is 20mm, each row of permeable anchor rods is provided with a circle, each 3-4 rows of heat exchange tubes are provided with 1 water pump, and the heat exchange tube penetrates into the permeable anchor rods to absorb the shallow geothermal energy in the routing process.
During specific construction, along with the excavation work of the tunnel, holes are drilled on the periphery of the tunnel, anchor rods 1 are inserted, pervious concrete 2 is injected for fixation, and if a heat exchange tube 5 is adopted, the heat exchange tube 5 penetrates into the holes before grouting; then, laying permeable geotextile 4 and waterproof geotextile 10 at intervals on the inner wall of the tunnel, wherein the two geotextiles are arranged in a lap joint manner; then, a temperature control drainage plate 6 is arranged above the permeable geotextile 4, a temperature sensor 3 is arranged close to the temperature control drainage plate 6, and if point blocking is adopted, a resistance wire 14 in the temperature control drainage plate 6 and the temperature sensor 3 are connected to a temperature control switch 8 and an alternating current 9; if the heat exchange tube 5 is adopted, the heat exchange tube 5 is connected to the temperature control 8 and the water pump 13. The lower part of the tunnel is symmetrically paved with longitudinal drain pipes 7, and the upper parts of the drain pipes 7 positioned below the temperature control drain boards 6 are punched with holes 12 for collecting the water seepage drained by the drain boards. The tunnel separates certain distance and sets up horizontal escape canal 11, and escape canal 11 links to each other with longitudinal drain pipe 7, will ooze the water discharge tunnel.
The utility model provides an utilize shallow geothermal energy, improve the peripheral soil body osmotic coefficient in tunnel through the control by temperature change drain bar, increase drainage efficiency's tunnel drainage structure device's thinking and method, the method and the way that specifically realize this technical scheme are many, above only the utility model discloses an preferred embodiment. All the components not specified in the present embodiment can be realized by the prior art.
Claims (10)
1. A tunnel temperature control drainage structure device based on shallow geothermal energy is characterized by comprising a permeable anchor rod, a temperature control drainage plate (6), permeable geotextile (4), waterproof geotextile (10), a temperature sensor (3), a drainage pipe (7) and a drainage ditch (11); the water-permeable anchor rods are composed of anchor rods (1) and water-permeable concrete (2) wrapped around the anchor rods, and the water-permeable anchor rods are arranged at intervals along the longitudinal direction of the tunnel; the temperature control drainage plate (6) is formed by processing a plastic drainage plate with an interlayer wrapped with a heat exchange tube (5) or a resistance wire (14) with an insulating layer; the permeable geotextile (4) is arranged in the range of 10-20 cm on two sides of the permeable anchor rod and outside the temperature control drain plate (6); the temperature sensor (3) is arranged on the central axis of the tunnel in a manner of clinging to the temperature control drainage board (6); the waterproof geotextile (10) is arranged at the gap of the permeable geotextile (4) and is overlapped with the permeable geotextile (4); the drain pipes (7) are symmetrically arranged below the temperature control drain plates (6) on the two sides of the tunnel; escape canal (11) interval sets up in the tunnel lower part, and escape canal (11) are linked together with drain pipe (7), will seep water and discharge the tunnel.
2. The tunnel temperature-control drainage structure device according to claim 1, wherein the total diameter of the water-permeable anchor rod is 2-3 times of the diameter of the anchor rod (1), the length of the anchor rod (1) is 5-10 m, and the length of the water-permeable anchor rod is 15-20 cm longer than that of the anchor rod (1).
3. A tunnel temperature-control drainage structure device according to claim 1, wherein the water-permeable anchor rods are arranged at intervals of 2-5 m in the longitudinal direction of the tunnel for one circle, and 2-3 water-permeable anchor rods are arranged at intervals of 1m in the circumferential direction for each circle.
4. The tunnel temperature-controlled drainage structure device according to claim 1, wherein the width of the temperature-controlled drainage plate (6) is 10-20 cm, the thickness is 4.5-6.0 mm, the thickness of the interlayer is 1-2 mm, the longitudinal water flux is 40-50 cm3/s, the permeability coefficient of the filter membrane is 5-8 x 10-4cm/s, the equivalent pore diameter of the filter membrane is 70-75 μm, and the tensile strength of the dry complex is 1.5-1.8 kN/10 cm.
5. The tunnel temperature-control drainage structure device according to claim 1, wherein the resistance wire (14) has a diameter of 0.5-1.5 mm and a resistance value of 5.551-0.01629 Ω/m at 20 ℃, and the resistance wire (14) and the temperature sensor (3) are connected to the temperature-control switch (8) and the alternating current (9).
6. The tunnel temperature-control drainage structure device according to claim 1, wherein the heat exchange tubes (5) are high-strength PE tubes, the outer diameter of the heat exchange tubes is 25mm, the inner diameter of the heat exchange tubes is 20mm, each row of permeable anchor rods is provided with one circle, 1 water pump (13) is arranged in each of 3-4 rows of heat exchange tubes, the permeable anchor rods penetrate through the heat exchange tubes in the routing process to absorb shallow geothermal energy, and the heat exchange tubes (5) are connected to the temperature control switch (8) and the water pumps (13).
7. The tunnel temperature-control drainage structure device according to claim 1, wherein the permeability coefficient of the permeable geotextile (4) is 58-100 cm/s.
8. The tunnel temperature-controlled drainage structure device according to claim 1, wherein the overlapping length of the waterproof geotextile (10) and the permeable geotextile (4) is 5-10 cm.
9. The tunnel temperature-controlled drainage structure device according to claim 1, wherein the diameter of the drainage pipe (7) is 5-10 cm, and a water permeable hole with a diameter of 5-20 mm is drilled on the upper side of the drainage pipe (7) below the temperature-controlled drainage plate (6) at an interval of 5-10 cm.
10. The tunnel temperature-control drainage structure device according to claim 1, wherein the temperature sensor (3) has a measurement range of-10-70 ℃ and a measurement accuracy of 0.5-0.1 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220487474.3U CN217152022U (en) | 2022-03-08 | 2022-03-08 | Tunnel temperature control drainage structure device based on shallow geothermal energy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220487474.3U CN217152022U (en) | 2022-03-08 | 2022-03-08 | Tunnel temperature control drainage structure device based on shallow geothermal energy |
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| CN217152022U true CN217152022U (en) | 2022-08-09 |
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| CN202220487474.3U Active CN217152022U (en) | 2022-03-08 | 2022-03-08 | Tunnel temperature control drainage structure device based on shallow geothermal energy |
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