A cold-resistant drainage system for tunnels in cold regions

Abstract

The present invention provides a cold-region tunnel tunnel junction drainage and cold-proof system, comprising a drainage ditch arranged beside an existing roadbed side ditch and extending along the tunnel from the tunnel tunnel junction, a heat preservation structure is arranged on both sides of the drainage ditch along the tunnel, the upper part of the drainage ditch is covered by a cover plate assembly with a heat preservation material, a temperature sensor is arranged on the cover plate assembly and at least one section extending along the tunnel from the tunnel tunnel junction, an electric heating panel is also arranged in the drainage ditch and at least one section extending along the tunnel from the tunnel tunnel junction, the temperature sensor is used to detect the temperature in the drainage ditch, and the electric heating panel is indirectly controlled to work through the detected temperature signal. The present invention can ensure smooth drainage of the tunnel structure and safe use.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel structures, and in particular to an external drainage and cold protection system at a tunnel-road junction in a cold region. Background Art

[0002] Regarding the problem of drainage outside the tunnel at the interface of the road and tunnel in cold regions, if the traditional drainage concept is adopted to introduce the accumulated water in the ditch in the tunnel through a pipe into the side ditch connected to the roadbed, even if certain insulation measures are taken, frost heave is likely to occur at the drainage interface, affecting the smoothness of the drainage of the accumulated water in the tunnel, thereby increasing the risk of safe use of the tunnel. Therefore, how to solve the problem of drainage outside the tunnel in cold regions is crucial. It is necessary to improve the existing drainage technology at the interface of the road and tunnel in cold regions to meet the drainage needs at the interface of the road and tunnel in cold regions, thereby ensuring the operational safety of the tunnel. Summary of the invention

[0003] The present invention is proposed to solve the problem of external drainage at the road-tunnel interface of existing cold-region tunnels. Its purpose is to provide an external drainage and cold-proof system at the road-tunnel interface of cold-region tunnels to ensure smooth drainage of the tunnel structure and safe use.

[0004] The present invention provides the following technical solutions:

[0005] A drainage and cold protection system outside the tunnel at the junction of a road and a tunnel in a cold region, comprising a drainage ditch arranged beside an existing roadbed side ditch and extending along the tunnel from the junction of the road and the tunnel, insulation structures are arranged on both sides of the drainage ditch along the tunnel, the upper part of the drainage ditch is covered by a cover plate assembly with insulation material, temperature sensors are arranged on the cover plate assembly at intervals in at least one section extending from the junction of the road and the tunnel along the tunnel, electric heating panels are also arranged at intervals in the drainage ditch and at least one section extending from the junction of the road and the tunnel along the tunnel, the temperature sensor is used to detect the temperature in the drainage ditch, and indirectly control the operation of the electric heating panel through the detected temperature signal.

[0006] Among them, the bottom of the drainage ditch is in an inverted trapezoidal shape, which is conducive to the collection of accumulated water.

[0007] Among them, the cover plate assembly includes an upper cover plate, a middle insulation layer and a lower cover plate from top to bottom, the middle insulation layer and the lower cover plate are deep into the channel of the drainage ditch and match the cross-sectional size of the top of the drainage ditch, and the cross-sectional area of ​​the upper cover plate is larger than the cross-sectional area of ​​the top of the drainage ditch; angle steel supports are also provided on the side walls on both sides of the drainage ditch for contacting the bottom of the cover plate assembly; the middle insulation layer and the lower cover plate are provided with holes for fixing and installing temperature sensors, the temperature sensor is fixed in the hole, and the probe extends out of the hole and is located below the lower cover plate; the middle insulation layer and the insulation structure are both made of polyurethane insulation material.

[0008] Wherein, the electric heating panel is fixed to the inner wall of at least one side of the drainage ditch by bolts.

[0009] A retaining wall is also provided along the tunnel above the cover assembly. The retaining wall is located on the side of the drainage ditch opposite to the existing roadbed side ditch, and there is a certain distance between the retaining wall and the drainage ditch. Drainage grooves are provided in at least one section of the water retaining wall extending along the tunnel. The drainage grooves are inclined downward from one side of the water retaining wall, and the inclined end of the drainage grooves is located at the upper edge of the existing roadbed side ditch.

[0010] Wherein, the temperature sensor and the electric heating panel are respectively connected with a control box, a data acquisition device, a data receiving device and a data processing device in sequence;

[0011] The control box is used to receive the temperature signal of the temperature sensor, convert the temperature signal into a collection signal recognizable by the data acquisition device, and transmit the signal to the data acquisition device; on the other hand, it is used to receive the command signal of the data processing device and control the opening and closing of the electric heating panel according to the command signal;

[0012] The data acquisition device is used to acquire the acquisition signal transmitted by the control box according to the set acquisition conditions, and transmit the acquired acquisition signal to the data receiving device;

[0013] The data receiving device is used to receive the acquisition signal transmitted by the data acquisition device, convert the received acquisition signal into a data signal recognizable by the data processing device, and transmit the data signal to the data processing device;

[0014] The data processing device is used to receive the data signal transmitted by the data receiving device, process and judge the data signal according to the set conditions, generate the command signal, and transmit the command signal to the control box.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are as follows: the newly excavated inverted trapezoidal insulation drainage ditch is independent of the roadbed side ditch, and will not affect the drainage of the roadbed at the tunnel-road-tunnel interface in cold areas where freeze-thaw phenomena are prone to occur. The newly excavated ditch is set in an inverted trapezoidal shape, which is conducive to accelerating the flow of accumulated water and ensuring the smoothness of drainage to a certain extent. The setting of the transverse drainage trough can prevent summer rainwater from entering the insulation drainage ditch as much as possible, and timely drain the accumulated water above the insulation ditch to the roadbed side ditch to ensure the insulation effect of the polyurethane material in the insulation ditch. The polyurethane insulation material is laid between the ditch cover plates and the outer wall of the insulation ditch, which has a good insulation effect. The temperature sensor is connected to the insulation ditch through the reserved hole in the cover plate to collect the temperature data of the insulation ditch in real time. The temperature sensor, the electric heating panel, the control box and the data acquisition and receiving device work together to realize the intelligent control of the temperature of the insulation ditch. The present invention solves the freeze-thaw problem of external drainage at the road-tunnel interface of existing cold-region tunnels, realizes intelligent temperature control, has a novel design concept, reasonable measures, significant effects, and broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structural elevation of the present invention;

[0017] Figure 2 It is a structural diagram of the retaining wall part;

[0018] Figure 3 It is a structural schematic diagram of the automatic control system of the present invention.

[0019] Among them: 1-drainage ditch; 2-drainage trough; 3-upper cover; 4-lower cover; 5-angle steel support; 6-middle insulation layer; 7-temperature sensor; 8-electric heating panel; 9-control box; 10-data acquisition device; 11-data receiving device; 12-bolt; 13-water retaining wall; 14-data processing device; 15-insulation structure. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is further described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] like Figure 1As shown, the drainage and cold protection system outside the tunnel at the junction of the road and tunnel in the cold region comprises a drainage ditch 1 arranged beside the existing roadbed side ditch and extending along the tunnel from the junction of the road and tunnel. Insulation structures 15 are arranged on both sides of the drainage ditch 1 along the tunnel. The upper part of the drainage ditch 1 is covered by a cover assembly with insulation material. Temperature sensors 7 are arranged on the cover assembly and at least one section extending from the junction of the road and tunnel along the tunnel. Electric heating panels 8 are also arranged in the drainage ditch 1 and at least one section extending from the junction of the road and tunnel along the tunnel. The temperature sensor 7 is used to detect the temperature in the drainage ditch 1 and indirectly control the operation of the electric heating panel 8 through the detected temperature signal.

[0022] The present invention sets up a drainage ditch along the tunnel, and reasonably designs the drainage ditch for thermal insulation (a cover plate assembly with thermal insulation material, a thermal insulation structure 15), and integrates temperature monitoring (temperature sensor 7) and a heating device (electric heating panel 8) in the drainage ditch, so as to effectively insulate and control the temperature in the drainage ditch, especially for the cold parts where the tunnel and the road are connected, thus solving the freeze-thaw problem of the drainage outside the tunnel at the interface of the existing tunnel and the road in cold regions.

[0023] The bottom of the drainage ditch 1 is in an inverted trapezoidal shape, which is conducive to the collection of accumulated water.

[0024] Among them, the cover plate assembly includes an upper cover plate 3, a middle insulation layer 6 and a lower cover plate 4 from top to bottom. The middle insulation layer 6 and the lower cover plate 4 are inserted into the channel of the drainage ditch 1 and match the cross-sectional size of the top of the drainage ditch, so as to achieve a good covering and insulation effect. The cross-section of the upper cover plate 3 is larger than the cross-sectional size of the top of the drainage ditch 1, so as to play a good covering and supporting role. Angle steel supports 5 are also arranged on the side walls on both sides of the drainage ditch 1 to provide auxiliary support by contacting the bottom of the cover plate assembly. The middle insulation layer 6 and the lower cover plate 4 have holes for fixing and installing the temperature sensor 7. The temperature sensor 7 is fixed in the hole, and the probe extends out of the hole and is located below the lower cover plate 4. The middle insulation layer 6 and the insulation structure 15 can both adopt polyurethane insulation materials.

[0025] The electric heating panel 8 is fixed to the inner wall of at least one side of the drainage ditch 1 by bolts 12 .

[0026] Wherein, a retaining wall 13 is also provided above the cover assembly along the tunnel. Figure 1-2The retaining wall 13 is located on the side of the drainage ditch 1 opposite to the existing roadbed side ditch, and the retaining wall 13 is at a certain distance from the drainage ditch 1. The retaining wall 13 is provided with a drainage groove 2 in at least one section extending along the tunnel. The drainage groove 2 is inclined downward from one side of the retaining wall 13, and the inclined end of the drainage groove 2 is located at the upper edge of the existing roadbed side ditch. The retaining wall 13 can prevent a large amount of external water from flowing into the drainage ditch 1, and can directly introduce the external water into the existing roadbed side ditch through the drainage groove 2, so as to achieve rapid docking drainage.

[0027] The temperature sensor 7 and the electric heating panel 8 are respectively connected to a control box 9, a data acquisition device 10, a data receiving device 11 and a data processing device 14; Figure 3 ,

[0028] The control box is used to receive the temperature signal of the temperature sensor 7, convert the temperature signal into a collection signal recognizable by the data acquisition device 10, and transmit the signal to the data acquisition device 10; on the other hand, it is used to receive the command signal of the data processing device 14, and control the opening and closing of the electric heating panel 8 according to the command signal;

[0029] The data acquisition device 10 is used to acquire the acquisition signal transmitted by the control box 9 according to the set acquisition conditions, and transmit the acquired acquisition signal to the data receiving device 11;

[0030] The data receiving device 11 is used to receive the acquisition signal transmitted by the data acquisition device 10, convert the received acquisition signal into a data signal recognizable by the data processing device 14, and transmit the data signal to the data processing device 14;

[0031] The data processing device 14 is used to receive the data signal transmitted by the data receiving device 11, process and judge the data signal according to the set conditions, generate a command signal, and transmit the command signal to the control box 9.

[0032] The specific control process is as follows: the temperature sensor 7 sends the collected temperature information to the control box 9, the control box 9 converts the temperature information into current analog quantity and transmits it to the data acquisition device 10, the data acquisition device 10 is set to collect the current analog quantity signal once every certain time interval, and transmits the collected current analog quantity signal to the data receiving device 11, the data receiving device 11 converts the current analog signal information into a digital signal and sends it to the data processing device 14, the data processing device 14 processes and judges the digital signal, makes a command signal to start or stop the electric heating panel 8 and transmits it to the control box 9, and the control box 9 controls the on and off of the electric heating panel 8 according to the received command signal. Thereby, the automatic adjustment and control of the temperature in the system of the present invention is realized.

[0033] The protection scope of the present invention is not limited thereto, and any person skilled in the art can easily make changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A cold-region tunnel tunnel junction drainage and cold-proof system, comprising a drainage ditch (1) arranged beside an existing roadbed side ditch and extending along the tunnel from the tunnel tunnel junction, a heat preservation structure (15) being arranged on both sides of the drainage ditch (1) along the tunnel, the upper part of the drainage ditch (1) being covered by a cover plate assembly with a heat preservation material, a temperature sensor (7) being arranged at intervals on the cover plate assembly and in at least a section extending along the tunnel from the tunnel tunnel junction, an electric heating panel (8) being arranged at intervals in the drainage ditch (1) and in at least a section extending along the tunnel from the tunnel tunnel junction, the temperature sensor (7) being used to detect the temperature in the drainage ditch (1) and indirectly control the operation of the electric heating panel (8) through the detected temperature signal; The bottom of the drainage ditch (1) is in an inverted trapezoidal shape, which is conducive to the collection of accumulated water; A retaining wall (13) is also provided above the cover assembly along the tunnel. The retaining wall (13) is located on a side of the drainage ditch (1) opposite to the existing roadbed side ditch, and the retaining wall (13) is at a certain distance from the drainage ditch (1). A drainage groove (2) is provided in at least one section of the retaining wall (13) extending along the tunnel. The drainage groove (2) is inclined downward from one side of the retaining wall (13), and the inclined end of the drainage groove (2) is located at the upper edge of the existing roadbed side ditch.

2. The cold-region tunnel road-tunnel joint drainage and cold-proof system according to claim 1 is characterized in that: The cover plate assembly comprises, from top to bottom, an upper cover plate (3), a middle thermal insulation layer (6) and a lower cover plate (4); the middle thermal insulation layer (6) and the lower cover plate (4) extend deep into the channel of the drainage ditch (1) and match the cross-sectional dimensions of the top of the drainage ditch; the cross-sectional dimensions of the upper cover plate (3) are larger than the cross-sectional dimensions of the top of the drainage ditch (1).

3. The cold-region tunnel road-tunnel joint drainage and cold-proof system according to claim 2 is characterized in that: The middle thermal insulation layer (6) and the lower cover plate (4) are provided with holes for fixing and installing a temperature sensor (7); the temperature sensor (7) is fixed in the hole, and a probe extends out of the hole and is located below the lower cover plate (4).

4. The cold-region tunnel road-tunnel joint drainage and cold-proof system according to claim 3 is characterized in that: The middle thermal insulation layer (6) and the thermal insulation structure (15) are both made of polyurethane thermal insulation material.

5. The cold-region tunnel road-tunnel joint drainage and cold-proof system according to claim 1 is characterized in that: Angle steel brackets (5) are also provided at intervals on the side walls on both sides of the drainage ditch (1) for contacting the bottom of the cover plate assembly.

6. The cold region tunnel road-tunnel joint drainage and cold protection system according to claim 1 is characterized in that: The electric heating panel (8) is fixed to the inner wall of at least one side of the drainage ditch (1) by means of bolts (12).

7. The cold-region tunnel road-tunnel joint drainage and cold-proof system according to claim 1 is characterized in that: The temperature sensor (7) and the electric heating panel (8) are respectively connected in sequence to a control box (9), a data acquisition device (10), a data receiving device (11) and a data processing device (14); The control box is used, on the one hand, to receive the temperature signal from the temperature sensor (7), convert the temperature signal into a collection signal recognizable by the data acquisition device (10), and transmit the signal to the data acquisition device (10); on the other hand, it is used to receive the command signal from the data processing device (14), and control the opening and closing of the electric heating panel (8) according to the command signal; The data acquisition device (10) is used to acquire the acquisition signal transmitted by the control box (9) according to the set acquisition conditions, and transmit the acquired acquisition signal to the data receiving device (11); The data receiving device (11) is used to receive a collection signal transmitted by the data collection device (10), convert the received collection signal into a data signal recognizable by the data processing device (14), and transmit the data signal to the data processing device (14); The data processing device (14) is used to receive the data signal transmitted by the data receiving device (11), process and judge the data signal according to set conditions, generate a command signal, and transmit the command signal to the control box (9).

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