CN217841736U

CN217841736U - Tunnel central drainage ditch is with jam point investigation structure

Info

Publication number: CN217841736U
Application number: CN202222448963.0U
Authority: CN
Inventors: 翟正平; 郭震山; 张剑; 刘志华; 李鹏; 张大海; 刘德龙
Original assignee: Shanxi Transportation Technology Research and Development Co Ltd; Shanxi Traffic Planning Survey Design Institute Co Ltd
Current assignee: Shanxi Transportation Technology Research and Development Co Ltd; Shanxi Traffic Planning Survey Design Institute Co Ltd
Priority date: 2022-09-16
Filing date: 2022-09-16
Publication date: 2022-11-18
Anticipated expiration: 2032-09-16

Abstract

The utility model particularly relates to a tunnel central drainage ditch is with jam point investigation structure has solved the mode of investigation jam point when current tunnel central drainage ditch takes place to block up and has the problem that takes time and takes a lot of work, is difficult to guarantee operation personnel's safety. A blocking point investigation structure for a central drainage ditch of a tunnel comprises a tunnel bottom structure, a cable ditch body and a central drainage ditch; a plurality of overflow mechanisms are arranged between the central drainage ditch and the cable groove body; the overflow mechanism comprises a connecting pipe, an intermediate pipe is further arranged in the inner cavity of the cable trench body, the bottom end portion of the intermediate pipe is detachably connected with the top end portion of the connecting pipe, and an overflow pipe is integrally arranged at the top end portion. The utility model discloses a lay this investigation structure in the tunnel construction stage, realized being convenient for observe and detect central drainage ditch blind spot in tunnel operation process, need not to seal the road, need not the operation personnel and open the inspection shaft investigation one by one, labour saving and time saving has guaranteed operation personnel's safety.

Description

Tunnel central drainage ditch is with jam point investigation structure

Technical Field

The utility model relates to a tunnel drainage engineering technical field specifically is a tunnel central drainage ditch is with jam point investigation structure.

Background

At present, the blockage phenomenon of a central drainage ditch occurs in an operated tunnel, so that the function of a drainage system is damaged, the water pressure behind a tunnel lining is increased, and the defects of cracks, water seepage and the like of the tunnel lining are caused to affect the attractiveness of the tunnel; and the tunnel structure is seriously deformed, cracked and broken, so that the stability and the driving safety of the tunnel supporting structure are threatened, and serious economic loss is caused.

When a central drainage ditch of a tunnel is blocked, no good method is available for accurately positioning the blocked points at present, and meanwhile, because inspection wells are arranged on the road, the road is often required to be closed during inspection, and the inspection wells are opened one by one to inspect the blocked points, so that the time and labor are wasted, the economic cost is high, and the safety of operators is difficult to ensure.

Therefore, it is necessary to provide a blockage point checking structure for a central drainage ditch of a tunnel to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a mode of investigation jam point exists the problem that takes time and takes a lot of work, is difficult to guarantee operation personnel's safety when solving current tunnel central drainage ditch and taking place to block up, provides a tunnel central drainage ditch is with jam point investigation structure.

The utility model discloses an adopt following technical scheme to realize:

a blocking point investigation structure for a tunnel central drainage ditch comprises a tunnel bottom structure, a cable groove body arranged on the left side of the tunnel bottom structure and the central drainage ditch arranged in the tunnel bottom structure; a plurality of overflow mechanisms distributed along the front and the back are arranged between the central drainage ditch and the cable groove body; the overflow mechanism comprises a connecting pipe, wherein the bottom end part of the connecting pipe is communicated with the central drainage ditch, the top end part of the connecting pipe penetrates through the lower part of the right side wall of the cable trench body, an intermediate pipe vertically placed is further arranged in the inner cavity of the cable trench body, the bottom end part of the intermediate pipe is detachably connected with the top end part of the connecting pipe, and the top end part of the intermediate pipe is integrally provided with an overflow pipe which penetrates through the upper part of the right side wall of the cable trench body and is higher than the bottom structure of the tunnel.

Furthermore, the connecting pipe is connected with the middle pipe through a V-shaped pipe, the bottom end part of the V-shaped pipe is fixedly sleeved on the top end part of the connecting pipe, and the top end part of the V-shaped pipe is fixedly sleeved on the bottom end part of the middle pipe; seal sleeves are respectively clamped between the connecting pipe and the V-shaped pipe and between the middle pipe and the V-shaped pipe.

Further, the distance between two adjacent overflow mechanisms is 50-150 m; the connecting pipe, the middle pipe and the V-shaped pipe are all made of HDPE high polymer plastic pipes or steel pipes; the inner diameter of the connecting pipe is consistent with that of the middle pipe, and the inner diameters of the connecting pipe and the middle pipe are both 10cm-20cm; a sealing sleeve I sleeved on the connecting pipe is arranged between the central drainage ditch and the connecting pipe.

Further, the tunnel bottom structure comprises an inverted arch backfill layer and a tunnel road base layer.

The utility model has the advantages of reasonable design and reliability, through laying this investigation structure at tunnel construction stage, realized observing and detecting the purpose to the jam point of central escape canal in tunnel operation process, need not to seal the road, need not to destroy the original road surface, can not influence the interior vehicle of tunnel and pass through, also need not the operating personnel to open the inspection shaft investigation one by one simultaneously, labour saving and time saving, the investigation of being convenient for; the operators do not need to enter the inspection well for inspection, so that the danger coefficient is reduced, and the safety of the operators is ensured; furthermore, the device has the advantages of simple structure, convenient construction and low economic cost.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic structural diagram of the overflow mechanism of the present invention;

fig. 3 is a schematic top view of the present invention;

fig. 4 is a schematic structural view of the overflow pipe of the present invention.

In the figure, 1 is a central drainage ditch, 2 is a tunnel bottom structure, 3 is a cable groove body, 4 is a connecting pipe, 5 is an intermediate pipe, and 6 is an overflow pipe.

Detailed Description

A blocking point investigation structure for a central drainage ditch of a tunnel is shown in attached figures 1-4; the system comprises a tunnel bottom structure 2, a cable trench body 3 arranged on the left side of the tunnel bottom structure 2 and a central drainage trench 1 arranged inside the tunnel bottom structure 2; a plurality of overflow mechanisms distributed along the front and the back are arranged between the central drainage ditch 1 and the cable groove body 3; overflow mechanism includes bottom portion and 1 intercommunication of central drainage ditch, top portion runs through connecting pipe 4 of 3 right side walls lower parts of cable trench body, and the inner chamber of cable trench body 3 still is provided with along vertical intermediate pipe 5 of placing, and the bottom portion of intermediate pipe 5 is connected, top portion an organic whole is provided with overflow pipe 6 that runs through 3 right side walls upper portions of cable trench body and be higher than tunnel bottom structure 2 with top portion detachably of connecting pipe 4.

The utility model can roughly deduce the blocking point of the central drainage ditch 1 by observing the overflow condition of the water flow in the overflow pipe 6, does not need to close the road, does not influence the passage of the tunnel, and simultaneously does not need to open the inspection well one by one for inspection by operating personnel, thereby saving time and labor; the operation personnel need not to get into the inspection shaft and inspect, has reduced the danger coefficient, has guaranteed operation personnel's safety.

When the central drainage ditch 1 is blocked, water flow is difficult to flow out, so that the water pressure in the central drainage ditch 1 is increased, the water flow in the central drainage ditch 1 overflows to the surface of the tunnel bottom structure 2 after passing through the connecting pipe 4, the intermediate pipe 5 and the overflow pipe 6, an operator can deduce that the central drainage ditch 1 is blocked after observing the overflow of the water flow, roughly deduce the blocking point of the central drainage ditch 1 according to the overflow condition of the water flow in each overflow pipe 6, and then a small-sized observation device (such as an endoscope, a miniature observation robot and the like) is put down in the central drainage ditch 1 through the overflow pipe 6, the intermediate pipe 5 and the connecting pipe 4 to detect and determine the blocking point.

During installation and construction, firstly, a plurality of connecting holes distributed along the front and back are formed in the side wall of the central drainage ditch 1, then the bottom end parts of the connecting pipes 4 are inserted into the connecting holes, and the connecting positions are sealed, so that the connecting pipes 4 are communicated with the central drainage ditch 1; then, constructing the tunnel bottom structure 2 to enable the top end parts of the connecting pipes 4 to extend out of the tunnel bottom structure 2, and then installing the cable trench body 3 on the left side of the tunnel bottom structure 2 to enable the top end parts of the connecting pipes 4 to penetrate through the right side wall of the cable trench body 3; then fixedly connecting and sealing the connecting part of the connecting pipe 4 and the intermediate pipe 5, and then fixedly connecting and sealing the connecting part of the overflow pipe 6 and the intermediate pipe 5, so that the right end part of the overflow pipe 6 penetrates through the right side wall of the cable trench body 3 and is higher than the tunnel bottom structure 2; repeating the operation by analogy until the installation of each overflow mechanism is completed, thereby completing the installation construction of the investigation structure; the problem of when taking place to block up, the mode of investigation jam point has the time-consuming and labor-consuming, is difficult to guarantee operation personnel's safety in current tunnel central drainage ditch is overcome.

The connecting pipe 4 is connected with the middle pipe 5 through a V-shaped pipe, the bottom end part of the V-shaped pipe is fixedly sleeved at the top end part of the connecting pipe 4, and the top end part of the V-shaped pipe is fixedly sleeved at the bottom end part of the middle pipe 5; seal sleeves are respectively clamped between the connecting pipe 4 and the V-shaped pipe and between the middle pipe 5 and the V-shaped pipe.

The detachable connection of the connecting pipe 4 and the middle pipe 5 is realized through the structural design of the V-shaped pipe; the structural design of seal cover can seal the hookup location of connecting pipe 4 and V-arrangement pipe, intermediate pipe 5 and V-arrangement pipe, avoids rivers overflow in the central drainage ditch 1 to influence the accuracy of investigation in the cable trench groove body 3, has increased the structural reliability of this investigation structure.

As shown in fig. 3; the distance between two adjacent overflow mechanisms is 50-150 m; the connecting pipe 4, the middle pipe 5 and the V-shaped pipe are all made of HDPE high polymer plastic pipes or steel pipes; the inner diameter of the connecting pipe 4 is consistent with that of the middle pipe 5, and the inner diameters of the connecting pipe and the middle pipe are both 10cm-20cm; a sealing sleeve I sleeved on the connecting pipe 4 is arranged between the central drainage ditch 1 and the connecting pipe 4.

The HDPE polymer plastic pipe has the advantages of stable chemical property, difficult brittle failure, better compression resistance, moisture resistance and corrosion resistance; the structural design of seal cover can seal the junction of central drainage ditch 1 and connecting pipe 4, avoids rivers to get into the gap of junction and then influences the degree of accuracy of investigation.

The tunnel bottom structure 2 comprises an inverted arch backfill layer and a tunnel roadbed layer.

In the specific implementation process, the connecting pipe 4 and the middle pipe 5 can be detachably connected by winding a waterproof adhesive tape on the outer side wall of the opposite end parts of the connecting pipe and the middle pipe together; the central drainage ditch 1 can be made of plastic pipes or cast-in-place concrete pipes.

In the description of the present invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A blocking point investigation structure for a tunnel central drainage ditch comprises a tunnel bottom structure (2), a cable trench body (3) arranged on the left side of the tunnel bottom structure (2) and a central drainage ditch (1) arranged in the tunnel bottom structure (2); the method is characterized in that: a plurality of overflow mechanisms distributed along the front and the back are arranged between the central drainage ditch (1) and the cable groove body (3); overflow mechanism includes bottom portion and central drainage ditch (1) intercommunication, top portion runs through connecting pipe (4) of cable trench body (3) right side wall lower part, and the inner chamber of cable trench body (3) still is provided with along vertical intermediate pipe (5) of placing, and the bottom portion of intermediate pipe (5) is connected with the top portion detachably of connecting pipe (4), top portion an organic whole is provided with overflow pipe (6) that run through cable trench body (3) right side wall upper portion and be higher than tunnel bottom structure (2).

2. The blockage point investigation structure for the tunnel central drainage ditch according to claim 1, wherein: the connecting pipe (4) is connected with the middle pipe (5) through a V-shaped pipe, the bottom end part of the V-shaped pipe is fixedly sleeved on the top end part of the connecting pipe (4), and the top end part of the V-shaped pipe is fixedly sleeved on the bottom end part of the middle pipe (5); seal sleeves are respectively clamped between the connecting pipe (4) and the V-shaped pipe and between the middle pipe (5) and the V-shaped pipe.

3. The blockage point investigation structure for the tunnel central drainage ditch according to claim 1, wherein: the distance between two adjacent overflow mechanisms is 50-150 m; the connecting pipe (4), the middle pipe (5) and the V-shaped pipe are all made of HDPE high polymer plastic pipes or steel pipes; the inner diameter of the connecting pipe (4) is consistent with that of the middle pipe (5), and the inner diameters of the connecting pipe and the middle pipe are both 10cm-20cm; a sealing sleeve I sleeved on the connecting pipe (4) is arranged between the central drainage ditch (1) and the connecting pipe (4).

4. The blockage point investigation structure for the tunnel central drainage ditch according to claim 1, wherein: the tunnel bottom structure (2) comprises an inverted arch backfill layer and a tunnel roadbed layer.