CN218439464U - Water guiding device for tunnel construction joint - Google Patents

Abstract

The utility model discloses a tunnel construction joint water guiding device, including the guiding gutter body, the guiding gutter body corresponds tunnel lining's construction joint setting, still including being used for carrying out the heating pipe structure that heats to construction joint percolating water, this internal water guide space that forms of guiding gutter, the heating pipe structure is established in the water guide space along the water guide direction of guiding gutter body. The water guide device for the tunnel construction joint is reasonable in structural design, the water guide groove is of an n-shaped structure, a water guide space is formed in the middle of the n-shaped structure, electric tracing is arranged in the water guide space, water leakage can be heated and guided, and the problem of water guide failure caused by freezing is avoided; and the structure is simple and the cost is low.

Description

Water guide device for tunnel construction joint

Technical Field

The utility model belongs to the technical field of the tunnel technique and specifically relates to a tunnel construction joint water guide device is related to.

Background

Along with the massive construction of railway tunnels in China, the problems of water leakage and frost heaving appear in more and more tunnel linings. Investigation shows that the phenomena of the phenomenon that side ditches and central ditches at the tunnel entrance section of a severe cold region are subjected to tunnel three-slit leakage water, ice is formed and hung and local ditches are overflowed and iced are the most serious, ice and snow on the tops of mountains begin to melt along with the gradual return of air temperature in the spring season, snow water seeps through cracks of mountains, and at the moment, because tunnels in the mountains are not unfrozen and the annular and longitudinal drain pipes are in a frozen state, the drainage function cannot be exerted, so that the seepage water leaks and emerges through weak links of the lining and is influenced by cold air in the tunnel to form the ice forming phenomenon. Along with further rising of the air temperature, the tunnel freezing ring is unfrozen, the annular and longitudinal drainage pipes gradually recover the drainage function, and the phenomenon of water leakage and ice hanging disappears at the moment. When the water enters winter, the blind pipes of the bottom plate of the side wall are firstly frozen, the drainage function is invalid, the water level rises, water leakage occurs on part of the arch wall, the air temperature further falls, and the blind pipes at the back of the arch wall are completely frozen. In addition, when massif crack water is stored with a large amount of severe mineral substances, crystals are formed by long-term precipitation, and a reserved drainage system behind the tunnel lining is blocked, so that the drainage system fails, and therefore a large amount of crack water is continuously stored and rises, high water level and high water pressure are generated, and further leakage is realized from weak parts of the tunnel structure.

A drainage system at the back of the tunnel lining is blocked or frozen by mineral crystals, drainage is invalid, water leakage or ice formation and hanging are generated, the short circuit of a contact network is directly influenced, and the driving safety is influenced; the freezing and blocking of the side ditches and the central ditch cause frost heaving of the lining, and the falling of the lining concrete can be caused, thereby endangering the driving safety. At present, no good solution is provided for the problem of water leakage and icing of railway tunnel construction joints (deformation joints) in cold regions.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a tunnel construction joint water guide device to reach the purpose of avoiding tunnel construction joint water guide inefficacy.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

this tunnel construction joint water guide device, including the guiding gutter body, the guiding gutter body corresponds tunnel lining's construction joint setting, still includes the heating pipe structure that is used for carrying out the heating to the construction joint percolating water, and this internal water guide space that forms of guiding gutter, heating pipe structure establish in the water guide space along the water guide direction of guiding gutter body.

Further:

and an insulating coating is sprayed on the outer side of the water chute body.

The aqueduct bodies are a group of adjacent bodies in lap joint arrangement.

The heating pipe structure comprises an electric tracing pipe and an electric tracing arranged in the electric tracing pipe, and the electric tracing pipe is fixed in the water guide groove body through an electric tracing pipe fixing clamp.

The water guide groove body is of an arc-shaped structure, the edge of the water guide groove body is provided with a bent wing plate, and the wing plate is provided with a bolt mounting hole for fixing the water guide groove body on a tunnel lining through an expansion bolt, a planting bar or a chemical anchor bolt.

The electric tracing pipe is arranged in the middle of the water chute body.

Still including the fixed saddle card strip that is used for supporting the guiding gutter body, the tip of fixed saddle card strip corresponds the bolt mounting hole and sets up.

The tunnel drainage system is characterized by further comprising a tail end water diversion groove, wherein one end of the tail end water diversion groove is connected with the lower end of the water diversion groove body, and the other end of the tail end water diversion groove is arranged in a drainage ditch in the tunnel.

The tail end water diversion groove comprises a tail end water diversion groove body and a tail end water diversion groove upper cover, the tail end water diversion groove upper cover is fixed above the tail end water diversion groove body through a connecting screw, and the lower end of the heating pipe structure is led into the tail end water diversion groove body.

The tail end water guide groove is obliquely arranged, and the inclination angle is 5-15 degrees.

Compared with the prior art, the utility model, have following advantage:

the water guide device for the tunnel construction joint is reasonable in structural design, the water guide groove is of an n-shaped structure, a water guide space is formed in the middle of the n-shaped structure, electric tracing is arranged in the water guide space, water leakage can be heated and guided, and the problem of water guide failure caused by freezing is avoided; and the structure is simple and the cost is low.

Drawings

The contents of the description and the references in the drawings are briefly described as follows:

fig. 1 is a schematic view of the structure of the device of the present invention.

Fig. 2 is a schematic cross-sectional view of the device of the present invention.

Fig. 3 is a schematic top view of the device of the present invention.

Fig. 4 is an arc-shaped schematic view of the device of the present invention.

Fig. 5 is a schematic view of the application of the device of the present invention.

Fig. 6 is a schematic diagram of the device according to the present invention.

Fig. 7 is the schematic view of the arrangement of the terminal flume of the utility model.

Fig. 8 is a schematic cross-sectional view of fig. 7.

Fig. 9 is a schematic view of the utility model of electric tracing in the flume.

Fig. 10 is a schematic view of the opening of the drain cover plate according to the present invention.

Fig. 11 is a schematic view of the structure of the terminal flume of the present invention.

Fig. 12 is a schematic top view of fig. 11.

Fig. 13 is a schematic cross-sectional view of the end flume of the present invention.

Fig. 14 is a schematic view of the trough body of the present invention.

Fig. 15 is a schematic view of the upper cover of the present invention.

Fig. 16 is a schematic view of the inclined arrangement of the terminal flume of the present invention.

In the figure:

1. the structure comprises a water chute body, 2 bolt mounting holes, 3 electric heat tracing pipes, 4 electric heat tracing pipe fixing clamps, 5 stress release grooves, 6 electric heat tracing, 7 fixing saddle clamping strips, 8 sealing strips, 9 expansion bolts, steel bars or chemical anchor bolts, 10 tunnel lining, 11 construction joints and 12 lap joints; 13. the cable trough, 14 drainage ditches, 15 cover plates, 16 tail end water diversion troughs, 1601 tail end water diversion trough groove bodies, 1602 tail end water diversion trough upper covers, 1603 lap joints, 1604 connecting screws and 17 cover plate holes.

Detailed Description

The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings.

As shown in fig. 1 to 6, the water guiding device for the construction joint of the tunnel comprises a water guiding groove body 1 and a heating pipe structure for heating the water leakage of the construction joint; the water chute body 1 is arranged corresponding to a construction joint 11 (deformation joint) of the tunnel lining 10, a water guiding space is formed in the water chute body 1, and the heating pipe structure is arranged in the water guiding space along the water guiding direction of the water chute body.

The water chute bodies are a group of adjacent bodies in an overlapping manner, so that the assembly is convenient; the aqueduct body is of an arc-shaped structure, the radius of the arc-shaped structure is the same as that of the tunnel lining, and the aqueduct body is arranged corresponding to the arc-shaped construction joint.

The water guide groove body is of an arc-shaped structure, the edge of the water guide groove body is provided with a bent wing plate, the wing plate is provided with a bolt mounting hole 2 for fixing the water guide groove body on a tunnel lining through an expansion bolt, a planting bar or a chemical anchor bolt 9, and the wing plate is provided with a group of stress release grooves 5. The utility model discloses still including the fixed saddle card strip 7 that is used for supporting the guiding gutter body, the tip of fixed saddle card strip corresponds the bolt mounting hole setting, is equipped with sealing strip 8 between the pterygoid lamina of guiding gutter body and the tunnel lining, passes fixed saddle card strip tip and bolt mounting hole through expansion bolts, bar planting or chemical crab-bolt and fixes at tunnel lining.

Preferably, the heating pipe structure comprises an electric heat tracing pipe 3 and an electric heat tracing 6 arranged in the electric heat tracing pipe, and the electric heat tracing pipe is fixed in the water guide groove body through an electric heat tracing pipe fixing clamp 4; the number of the electric tracing pipes is more than one, and the electric tracing pipes are arranged in the middle of the water chute body.

The utility model has the advantages that the water guide groove is of a structure in a shape like a Chinese character ' ji ', the middle part of the shape like the Chinese character ' ji forms a water guide space, and the electric tracing is arranged in the water guide space, so that the leakage water can be heated and guided, and the problem of water guide failure caused by freezing is avoided; and the structure is simple and the cost is low.

Preferred specific examples are:

aiming at the problems of water leakage and icing of the construction joint 11 (deformation joint) of the railway tunnel in the cold region, the spliced type heat tracing water guide groove is designed. The water guide groove is of a structure in a shape like a Chinese character ' ji ', the middle part of the shape like the Chinese character ' ji is a water guide space, and electric tracing is placed in the middle of the water guide space to heat and guide the leakage water; the water chute is arranged on the lining at two sides of the construction joint through expansion bolts, embedded bars or chemical anchor bolts.

The water chute structure:

the whole structure of the water chute is an arc-shaped structure and consists of a water chute body and an electric tracing pipe. The diversion trench body is a bent stainless steel plate, a common steel plate or a composite material plate, and the middle space of the body is a flow channel; the outer side of the water chute body is sprayed with an insulating coating, so that the safety is improved; the outer side of the water chute body can be free of an insulating coating, so that the cost is low; two sides of the upper part of the body are provided with outward-turned wing plates, and bolt mounting holes are formed in the wing plates and used for mounting expansion bolts, embedded bars or chemical anchor bolts; more than one electric tracing pipe is arranged in the middle of the water flow channel, and a constant-temperature electric tracing band is arranged in the pipe.

The sizes of the shapes of the two ends of the water chute are slightly different, wherein one end of the water chute is a large end, and the other end of the water chute is a small end. And similarly, the electric heat tracing pipes in the water guide grooves also adopt a structure with different sizes, so that the electric heat tracing pipes can be lapped when the water guide grooves are lapped. The lapping mode can prevent the flowing water from leaking outside when flowing into the next water guiding groove from one water guiding groove, and meanwhile, the flowing water in the water guiding grooves can not flow into the electric tracing pipe.

The extending direction of each water chute is an arc-shaped structure, the radius R of the arc is consistent with the radius of the tunnel lining installed on the water chute, and the water chutes can be attached to the tunnel lining when being installed. The length of a single water chute can be different according to field installation conditions, the main length specifications are 1200mm, 1500mm, 2400mm and the like, and the installation is simple and convenient.

Material selection:

considering that the diversion trench is installed in the tunnel and needs to be in contact with water for a long time, in order to keep the usability and the aesthetic property of the diversion trench, the diversion trench body and the electric tracing pipe are made of 304 stainless steel. The thickness of the stainless steel plate used for the tank body is 1mm, and the thickness of the electric tracing square tube is 0.6mm.

The water chute covers the whole expansion joint, and water can be guided out no matter water leaks from any position of the expansion joint. After the flexible joint is installed on site, the specific water leakage level of the flexible joint is random, and the flexible joint can be positioned at the highest point of the lining, or can be positioned at a middle or lower position, and when the water leakage point is positioned at the middle or lower position, no water flows at the upper part of the water guide groove. The whole water chute is characterized by uncertainty of the drainage position and drainage amount.

The electric tracing can be divided into constant-power electric tracing and constant-temperature electric tracing, the constant-power electric tracing means that the heating power of each section of the electric tracing band is constant, no matter whether the temperature of a heated object is high or not, the electric tracing always outputs heat to the heated object, and the constant-power electric tracing needs to be provided with a temperature control device to control the heating temperature.

The constant temperature electric tracing is a self-temperature-control (self-limiting) electric tracing, which is composed of conductive carbon particles and two parallel buses with insulating layers added, in each tracing line, the number of circuits between the buses changes with the influence of temperature, when the temperature around the tracing band becomes cold, the conductive plastic generates the contraction of micro molecules to connect the carbon particles to form a circuit, and the current passes through the circuits to heat the tracing band. When the temperature rises, the conductive plastic expands micro molecules, carbon particles gradually separate, and a circuit is interrupted, the resistance rises, and the heat tracing band automatically reduces the power output. When the temperature is cooled, the plastic returns to a micro-molecular contraction state, the carbon particles are correspondingly connected to form a circuit, and the heating power of the heat tracing band automatically rises. In short, the temperature of the constant-temperature electric tracing band does not rise any more when the temperature rises to a certain temperature (for example, 50 ℃), and the lower the peripheral temperature of the electric tracing band is, the higher the heating efficiency of the electric tracing band is.

Due to the uncertainty of the flowing water position of the water guide groove, the temperature control sensor of the constant-power electric tracing band cannot be installed, and the temperature of the water-free position is easily overhigh in the using process. The highest maintaining temperature of the low-temperature model of the constant-temperature electric tracing band is about 60 ℃, different heat supply rates can be provided according to different temperatures, and the use environment is met. Therefore, the electric tracing in the water guide groove adopts constant-temperature (automatic temperature control) electric tracing and is provided with an electric heating power supply system.

Mounting a water chute:

the water chute is arranged at the expansion joint, the tank body covers the whole expansion joint and is in contact with the lining, and the tank body is fixed on the lining through expansion bolts, embedded bars or chemical anchor bolts and a fixing saddle clamp. Ma Anka has a longitudinal distance of 400mm in one group, and not only can fix the water guide groove, but also can protect the middle position of the water guide groove from generating excessive deformation.

The two adjacent water chutes are overlapped, the electric tracing pipe is spliced, the length of the overlapped part is 100mm, the 12-flow direction of the overlapped part is consistent with the overlapped direction, and water cannot overflow the water chutes.

In order to prevent the running water at the construction joint from flowing to the outer side of the water chute along the lining wall, a self-adhesive rubber sealing strip is additionally arranged at the lap joint of the water chute and the lining, and the self-adhesive rubber sealing strip can be tightly pressed on the lining wall by a water chute wing plate when the water chute is installed.

Maintenance of the water chute:

after the water chute is installed, the main work needing maintenance is to replace electric tracing, the water chute adopts a built-in rectangular pipe to distribute electric tracing, and the rectangular pipe is in a through form. The electric tracing heat can penetrate through one end and penetrate out of the other end. When the electric tracing works abnormally and needs to be replaced, only the existing electric tracing needs to be extracted, new electric tracing needs to be inserted, and the electric connection is connected. The whole water chute does not need to be disassembled and assembled, and the maintenance is convenient.

As shown in fig. 7 to 16, when the electrically-heated water guiding gutter is used for water guiding in the construction joint of the tunnel lining, the leakage water should flow to the bottom of the tunnel lining along with the water guiding gutter and enter the drainage ditch 14 at both sides of the tunnel to be discharged. In some tunnels, however, the gutters do not border the lining, and a cable trough 13 is provided between the gutters and the lining. In order to meet the drainage function, a special tail end water diversion groove 16 is designed, so that water in the electrified heat tracing water diversion groove flows into a drainage ditch.

The tail end diversion groove 16 is of a bent cover plate groove type structure, can be placed above the cover plate and can be communicated with the electrified heat tracing diversion groove and the drainage ditch. The diversion channel is a closed water flowing structure, and the water flowing section has a certain inclination and can store no water in the water guiding process. The flume is connected with the lining and the side wall of the ditch through expansion bolts. One side of the tail end diversion trench is installed on the lining 10, a lap joint port 1603 with the electrified heat tracing diversion trench is reserved, and the other end of the tail end diversion trench is placed in the drainage ditch.

The tail end flume comprises a tail end flume body 1601 and a tail end flume upper cover 1602, the flume body and the upper cover are both of a groove type structure, water flows in the flume body, the appearance width of the upper cover is slightly larger than that of the flume body, and the upper cover can be embedded in the flume body and fixed by a connecting screw 1604. The top and the bottom of the groove body are provided with expansion bolt mounting support plates.

The diversion section of the tail end diversion groove is provided with a certain inclination angle A, the angle can be (5-15 degrees), and the water flowing in the diversion groove can flow out to the drainage ditch quickly without storing water due to the inclination.

The diversion channel is arranged at the tail end of the electrified heat tracing diversion channel and can guide water of the electrified heat tracing diversion channel into the drainage ditch, one side of the diversion channel is arranged on the lining through expansion bolts, and the other side of the diversion channel is arranged at the top end of the side wall of the drainage channel through expansion bolts. After the diversion trench is installed, the diversion trench is not contacted with the cable trench and the cover plate 15 thereof, and the normal use of the cable trench is not influenced. When the electric tracing heat water guiding groove is lapped with the tail end water guiding groove, the inserting type lapping is adopted, and one part of the water guiding groove is inserted into the water guiding groove, so that not only can the flowing water be prevented from splashing, but also the contact between the cold air and the flowing water can be reduced to the maximum extent.

The water guiding section of the water guiding groove is a closed flowing water space, and the electric tracing in the electric tracing water guiding groove can be deeply inserted into the water guiding groove to perform heat tracing on flowing water in the water guiding groove, so that the flowing water is prevented from being blocked by freezing.

When the electric tracing outlet is damaged or the outlet of the water guide groove is blocked, the water guide groove can be maintained by disassembling the upper cover of the water guide groove; the diversion channel goes deep into escape canal position department, corresponds the cutting and forms apron hole 17 to the escape canal apron, makes apron department just in time pass through the diversion cell body.

The above-mentioned is only for the description of the preferred embodiments of the present invention, and the above-mentioned technical features can be combined at will to form a plurality of embodiments of the present invention.

The present invention has been described in detail with reference to the accompanying drawings, and it is apparent that the present invention is not limited by the above embodiments, and various insubstantial improvements can be made without modification to the present invention.

Claims (10)

1. The utility model provides a tunnel construction joint water guiding device, includes the guiding gutter body, the guiding gutter body corresponds tunnel lining's construction joint setting, its characterized in that: the water guide groove is characterized by further comprising a heating pipe structure for heating the construction joint leakage water, a water guide space is formed in the water guide groove body, and the heating pipe structure is arranged in the water guide space along the water guide direction of the water guide groove body.

2. The water guide device for a tunnel construction joint according to claim 1, wherein: and an insulating coating is sprayed on the outer side of the water chute body.

3. The water guide device for a construction joint of a tunnel according to claim 1, wherein: the aqueduct bodies are a group of adjacent bodies in lap joint arrangement.

4. The water guide device for a construction joint of a tunnel according to claim 1, wherein: the heating pipe structure comprises an electric tracing pipe and an electric tracing arranged in the electric tracing pipe, and the electric tracing pipe is fixed in the water guide groove body through an electric tracing pipe fixing clamp.

5. The water guide device for a tunnel construction joint according to claim 1, wherein: the water guide groove body is of an arc-shaped structure, the edge of the water guide groove body is provided with a bent wing plate, and the wing plate is provided with a bolt mounting hole for fixing the water guide groove body on a tunnel lining through an expansion bolt, a planting bar or a chemical anchor bolt.

6. The water guide device for a construction joint of a tunnel according to claim 4, wherein: the electric tracing pipe is arranged in the middle of the water chute body.

7. The water guide device for a construction joint of a tunnel according to claim 5, wherein: the water guide groove is characterized by further comprising a fixed saddle clamping strip used for supporting the water guide groove body, and the end portion of the fixed saddle clamping strip corresponds to the bolt mounting hole.

8. The water guide device for a construction joint of a tunnel according to claim 1, wherein: the tunnel drainage system is characterized by further comprising a tail end water diversion groove, wherein one end of the tail end water diversion groove is connected with the lower end of the water diversion groove body, and the other end of the tail end water diversion groove is arranged in a drainage ditch in the tunnel.

9. The water guide device for a construction joint of a tunnel according to claim 8, wherein: the tail end water diversion groove comprises a tail end water diversion groove body and a tail end water diversion groove upper cover, the tail end water diversion groove upper cover is fixed above the tail end water diversion groove body through a connecting screw, and the lower end of the heating pipe structure is led into the tail end water diversion groove body.

10. The water guide device for a construction joint of a tunnel according to claim 8, wherein: the tail end water guide groove is obliquely arranged, and the inclination angle is 5-15 degrees.

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