CN215804715U - Water-rich section tunnel water-proof and drainage system device - Google Patents
Water-rich section tunnel water-proof and drainage system device Download PDFInfo
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- CN215804715U CN215804715U CN202122076134.XU CN202122076134U CN215804715U CN 215804715 U CN215804715 U CN 215804715U CN 202122076134 U CN202122076134 U CN 202122076134U CN 215804715 U CN215804715 U CN 215804715U
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Abstract
The utility model provides a water-rich section tunnel water-proof and drainage system device which comprises a tunnel body, wherein the tunnel body comprises a tunnel initial support layer, a waterproof layer and an inverted arch layer, drainage systems are respectively arranged at the two side bottoms of the tunnel body, each drainage system comprises a longitudinal drainage pipe, a transverse drainage pipe and an extension drainage pipe, the longitudinal drainage pipes longitudinally penetrate through the inverted arch layer, the first ends of the extension drainage pipes transversely penetrate through the tunnel initial support layer and are far away from the tunnel initial support layer and protrude outwards and extend, the first ends of the transverse drainage pipes transversely penetrate through the inverted arch layer and are far away from the inverted arch layer and protrude inwards and extend, the second ends of the extension drainage pipes and the second ends of the transverse drainage pipes are respectively communicated with the longitudinal drainage pipes, the first ends of the transverse drainage pipes are water outlets, and the peripheral wall of the extension drainage pipes is provided with a plurality of through holes. This prevent drainage system device can smoothly carry out the drainage to the outside country rock of tunnel preliminary bracing effectively, thoroughly solves the unable problem of drainage of outside country rock in rich water section tunnel.
Description
Technical Field
The utility model belongs to the technical field of tunnel lining waterproof and drainage construction, and mainly relates to a drainage system device adopted in a water-rich section in tunnel lining drainage system construction engineering.
Background
In the construction of tunnel engineering, a lining drainage system is mainly formed by an annular drainage pipe, a longitudinal drainage pipe and a transverse drainage pipe in the structural design aspect of a waterproof and drainage system, and the pipeline of the existing waterproof and drainage system is difficult to ensure effective drainage along with the construction of a large number of projects of tunnels in the southwest region of China and inevitably passes through a water-rich section.
Referring to fig. 1 and 2, there are shown schematic views of a conventional tunnel lining drainage system and piping arrangement. In the figure, the tunnel structure mainly comprises a tunnel primary support 1, a tunnel bottom support 2, an inverted arch 3, a tunnel waterproof layer 4, a longitudinal drain pipe 5, an annular drain pipe or a blind pipe 11 and a transverse drain pipe 6, wherein the tunnel bottom support 2, the inverted arch 3 and an inverted arch filling structure 7 are sequentially arranged at the bottom position of the tunnel, a cable communication ditch 8 and a water ditch 9 are arranged at two sides of the inverted arch filling structure 7, the tunnel primary support 1, the inverted arch waterproof layer 4 and the inverted arch 3 are sequentially arranged at the side position of the tunnel, the annular drain pipe 11 is arranged in the waterproof layer 4, water flow in the annular drain pipe 11 gradually flows out from top to bottom through the transverse drain pipe 6 by means of gravity, the longitudinal drain pipe 5 is further arranged at the bottom position of two sides of the tunnel waterproof layer 4, the longitudinal drain pipe 5 is provided with a plurality of transverse drainage sections 51, and water outlets of the transverse drain pipe 6 and the transverse drainage sections 51 are connected with the water ditch 9, the arrows in the figure indicate the direction of water flow 12 in the annular drain pipe 11.
However, the above conventional drainage system cannot drain the outside surrounding rock of the tunnel primary support 1, and further causes the water pressure in the outside surrounding rock area of the tunnel primary support 1 to increase, and the light person may leak water in the local non-tight lining area (sand line, cold pouring joint), and the serious person may cause the lining not to resist the too high water pressure, and further cause serious phenomena such as cracking and collapse of the lining. No matter the water leakage or the cracking and collapse of the lining, great potential safety hazards are generated to the later operation safety of the tunnel.
Disclosure of Invention
The utility model mainly aims to provide the water-proof and drainage system applicable to the tunnel at the water-rich section and the arrangement mode thereof, which can smoothly and effectively drain the outer side surrounding rock of the primary support of the tunnel and thoroughly solve the problem that the outer side surrounding rock of the tunnel at the water-rich section cannot drain water, thereby ensuring the use safety of the tunnel.
In order to achieve the main purpose of the utility model, the utility model provides a water-rich section tunnel water-proof and drainage system device, which comprises a tunnel main body, wherein the tunnel main body comprises a tunnel initial supporting layer, a waterproof layer and an inverted arch layer which are sequentially arranged from outside to inside, drainage systems are respectively arranged at the bottom positions of two sides of the tunnel main body, each drainage system comprises a longitudinal drainage pipe, horizontal outlet pipe and extension outlet pipe, the longitudinal drain pipe vertically passes the invert layer and arranges, the first end traversing tunnel primary support layer of extension outlet pipe and keep away from tunnel primary support layer and extend to the outside protrusion and arrange, the first end traversing invert layer of horizontal outlet pipe and keep away from invert layer and extend to the inboard protrusion and arrange, the second end of extension outlet pipe and the second end of horizontal outlet pipe are linked together with longitudinal drain pipe respectively, the first end of horizontal outlet pipe is the delivery port, a plurality of through-holes have been seted up to the perisporium of extension outlet pipe.
The water-rich tunnel water-proof and drainage system device comprises a tunnel main body, wherein the tunnel main body is provided with a water-proof and drainage system at the bottom of each side, the water-proof and drainage system comprises a longitudinal water drainage pipe, a transverse water drainage pipe and an extension water drainage pipe, the first end of the extension water drainage pipe transversely penetrates through the tunnel primary support layer and protrudes outwards from the tunnel primary support layer, so that the first end of the extension water drainage pipe is embedded into the outer surrounding rock of the tunnel primary support layer, the second end of the extension water drainage pipe and the second end of the transverse water drainage pipe are respectively communicated with the longitudinal water drainage pipe, the accumulated water of the outer surrounding rock of the tunnel primary support layer enters the extension water drainage pipe through a plurality of through holes in the circumferential wall of the extension water drainage pipe and then is discharged through the transverse water drainage pipe, the outer surrounding rock of the tunnel primary support layer can be drained smoothly and effectively, and the problem that the outer surrounding rock of the tunnel of the water-rich tunnel cannot be drained is solved thoroughly, thereby guarantee tunnel safe in utilization to the design of whole drainage system structure is simple, and job site operation is swift convenient, and is with low costs.
According to a preferable scheme, the first port of the extension water drain pipe is plugged with geotextile, and the outer surface of the peripheral wall of the extension water drain pipe, which is provided with the through hole, is wrapped with geotextile.
In a further proposal, the included angle between the extended drain pipe and the horizontal direction is not less than 5 degrees.
The further proposal is that the longitudinal water drainage pipe is provided with a plurality of groups of three-way valves, and one group of three-way valves are respectively communicated with the longitudinal water drainage pipe, the transverse water drainage pipe and the extension water drainage pipe.
According to a further scheme, each group of three-way valves comprises an end three-way valve and a middle three-way valve, the end three-way valves are respectively communicated with the bottom extended water drain pipe, the longitudinal water drain pipe and the transverse water drain pipe, two ends of the middle three-way valve are respectively communicated with the longitudinal water drain pipe, and the top end of the middle three-way valve is communicated with the top extended water drain pipe.
Further, the length of the extension drain pipe protruding outwards away from the tunnel primary support layer is not less than 200 cm.
Still further, the diameter of the through hole is larger than 6 mm.
The further scheme is that the longitudinal drain pipe, the transverse drain pipe and the extension drain pipe are all hard PVC pipe bodies, the inner walls of the hard PVC pipe bodies are smooth wall surfaces, and the diameters of inner holes of the hard PVC pipe bodies are 100 millimeters.
According to a further scheme, the water-rich section tunnel water-proof and drainage system device further comprises an annular drainage pipe, the annular drainage pipe is located in the waterproof layer, transverse section pipes are arranged at two ends of the bottom of the annular drainage pipe respectively, the transverse section pipes transversely penetrate through the inverted arch layer and are far away from the inverted arch layer and extend towards the inner side direction, and one end, protruding out of the inverted arch layer, of each transverse section pipe is a water outlet.
Still further, the inner hole diameter of the annular drain pipe is 50 mm.
Drawings
Fig. 1 is a schematic structural view of a conventional tunnel drainage system.
Fig. 2 is an enlarged view of a partial structure of a conventional tunnel drainage system.
Fig. 3 is a schematic structural diagram of a water-rich section tunnel water-proof and drainage system device of the utility model.
Fig. 4 is a partial structure enlarged view of a water-rich tunnel water-proof and drainage system device according to the utility model.
Fig. 5 is a partial enlarged structural schematic diagram of a water-rich section tunnel water-proof and drainage system device of the utility model.
Fig. 6 is a schematic view of a partially enlarged structure of an extended drain pipe in the water-rich tunnel water-proof and drainage system device according to the utility model.
The utility model is further explained with reference to the drawings and the embodiments.
Detailed Description
Referring to fig. 3 to 6, the present embodiment discloses a water-rich section tunnel water-proof and drainage system device, which includes a tunnel main body, wherein the tunnel main body includes a tunnel initial stage supporting layer 1, a waterproof layer 4 and an inverted arch layer 3, which are sequentially arranged from outside to inside. The both sides bottom position of tunnel main part is provided with drainage system respectively, drainage system includes longitudinal drain pipe 21, horizontal outlet pipe 22 and extension outlet pipe 23, 24, longitudinal drain pipe 21 vertically passes inverted arch layer 3 and arranges, the first end of extension outlet pipe 23, 24 transversely passes tunnel initial stage protective layer 1 and keeps away from tunnel initial stage protective layer 1 and outwards protrudes the extension and arranges towards outside side, the first end of horizontal outlet pipe 22 transversely passes inverted arch layer 3 and keeps away from inverted arch layer 3 and inwards protrudes the extension and arranges. The second ends of the extended drain pipes 23 and 24 and the second end of the transverse drain pipe 22 are respectively communicated with the longitudinal drain pipe 21, the first end of the transverse drain pipe 22 is a water outlet, and the peripheral walls of the extended drain pipes 23 and 24 are provided with a plurality of through holes 26.
The tunnel water-proof and drainage system device of the water-rich section of the embodiment is provided with drainage systems at the bottom positions of two sides of the tunnel main body respectively, each drainage system comprises a longitudinal drainage pipe 21, a transverse drainage pipe 22 and extension drainage pipes 23 and 24, the first ends of the extension drainage pipes 23 and 24 transversely penetrate through the initial tunnel supporting layer 1 and protrude and extend outwards away from the initial tunnel supporting layer 1, so that the first ends of the extension drainage pipes 23 and 24 are embedded into the outer surrounding rocks of the initial tunnel supporting layer 1, the second ends of the extension drainage pipes 23 and 24 and the second ends of the transverse drainage pipes 22 are respectively communicated with the longitudinal drainage pipe 21, accumulated water of the outer surrounding rocks of the initial tunnel supporting layer 1 enters the extension drainage pipes 23 and 24 through a plurality of through holes 26 on the peripheral walls of the extension drainage pipes 23 and 24 and then is discharged through the transverse drainage pipes 22, and the outer surrounding rocks of the initial tunnel supporting layer 1 can be drained smoothly and effectively, the problem that the outer side surrounding rock of the rich water section tunnel can not be drained is thoroughly solved, so that the tunnel is safe to use, the structure of the whole drainage system is simple in design, operation on a construction site is rapid and convenient, and the cost is low.
Wherein, the longitudinal drain pipe 21 of this embodiment is provided with a plurality of sets of three-way valves, and one set of three-way valves is respectively communicated with the longitudinal drain pipe 21, the transverse drain pipe 22 and the extension drain pipes 23 and 24. Specifically, the extended drain pipes 23 and 24 of the present embodiment include a top extended drain pipe 23 and a bottom extended drain pipe 24, each set of three-way valves includes an end three-way valve 28 and a middle three-way valve 27, the end three-way valve 28 is respectively communicated with the bottom extended drain pipe 24, the longitudinal drain pipe 21 and the transverse drain pipe 22, two ends of the middle three-way valve 27 are respectively communicated with the longitudinal drain pipe 21, and a top end of the middle three-way valve 27 is communicated with the top extended drain pipe 23. The extension drain pipes 23 and 24 of the present embodiment include a top layer extension drain pipe 23 and a bottom layer extension drain pipe 24, and the top layer extension drain pipe 23 and the bottom layer extension drain pipe 24 extend to different positions of the outer side surrounding rock of the initial tunnel supporting layer 1, so as to improve the drainage effect on the outer side surrounding rock of the initial tunnel supporting layer 1.
In addition, the geotextile 29 is plugged at the first end openings of the extended drain pipes 23 and 24, and the geotextile 210 is wrapped on the outer surface of the peripheral wall of the extended drain pipes 23 and 24, which is provided with the through holes 26. Specifically, the geotextile 29 is plugged at the first port of the top-layer extension water drain pipe 23, the geotextile 210 is wrapped on the outer surface of the peripheral wall of the top-layer extension water drain pipe 23 provided with the through hole 26, the geotextile 29 is plugged at the first port of the bottom-layer extension water drain pipe 24, and the geotextile 210 is wrapped on the outer surface of the peripheral wall of the bottom-layer extension water drain pipe 24 provided with the through hole 26, so that soil can be prevented from entering the top-layer extension water drain pipe 23 and the bottom-layer extension water drain pipe 24, and the blocked pipe cannot drain smoothly. Wherein, the plurality of through holes 26 on the peripheral wall of the bottom layer extended drain pipe 24 are arranged in a manner that the distance H2 between two adjacent through holes 26 in the circumferential direction of the bottom layer extended drain pipe 24 is between 3 cm and 5 cm, the distance H1 between two adjacent through holes 26 in the extending direction of the bottom layer extended drain pipe 24 is between 30 cm and 40 cm, and the diameter of each through hole 26 on the peripheral wall of the bottom layer extended drain pipe 24 is larger than 6 mm, preferably, the diameter of each through hole 26 is between 6 mm and 8 mm, thereby effectively and smoothly draining water. And, the plurality of through holes 26 on the peripheral wall of the top layer extended drain pipe 23 are arranged in such a manner that the distance H2 between two adjacent through holes 26 in the circumferential direction of the top layer extended drain pipe 23 is between 3 cm and 5 cm, the distance H1 between two adjacent through holes 26 in the extending direction of the top layer extended drain pipe 23 is between 30 cm and 40 cm, and the diameter of each through hole 26 on the peripheral wall of the top layer extended drain pipe 23 is larger than 6 mm, preferably, the diameter of each through hole 26 is between 6 mm and 8 mm, thereby enabling effective and smooth drainage.
In order to further improve the drainage effect, the extension drain pipes 23 and 24 of the present embodiment are obliquely arranged relative to the horizontal direction, and then the included angle between the extension drain pipes 23 and 24 and the horizontal direction is not less than 5 °, specifically, the included angle between the bottom extension drain pipe 24 and the horizontal direction of the present embodiment is not less than 5 °, and the included angle between the top extension drain pipe 23 and the horizontal direction is not less than 5 °, and the extending direction of the horizontal drain pipe 22 and the extending direction of the bottom extension drain pipe 24 are on the same extending line, and the top extension drain pipe 23, the bottom extension drain pipe 24 and the horizontal drain pipe 22 are obliquely arranged relative to the horizontal direction, so that the drainage can be rapidly, effectively and smoothly performed.
The length of the extended drain pipes 23 and 24 protruding outward away from the initial tunnel support layer 1 is not less than 200 cm, that is, the length of the top extended drain pipe 23 and the bottom extended drain pipe 24 protruding outward away from the initial tunnel support layer 1 is not less than 200 cm. The longitudinal drain pipe 21, the transverse drain pipe 22 and the extension drain pipes 23 and 24 are all hard PVC pipes, the inner walls of the hard PVC pipes are smooth wall surfaces, and the diameters of inner holes of the hard PVC pipes are 100 millimeters.
Further, the water drainage system device is prevented in rich water section tunnel of this embodiment still includes annular drain pipe 25, and annular drain pipe 25 is located waterproof layer 4, and annular drain pipe 25's bottom both ends are provided with horizontal section pipe 251 respectively, and horizontal section pipe 251 transversely passes inverted arch layer 3 and keeps away from inverted arch layer 3 towards inboard direction extension arrangement, and the one end that horizontal section pipe 251 bulges inverted arch layer 3 is the delivery port. Wherein, the inner hole diameter of the annular drain pipe 25 of the embodiment is 50 mm.
This embodiment three-way valve adopts 90 right angle structures, at top layer extension outlet pipe 23 and bottom extension outlet pipe 24's embedded position, the degree of depth that adopts the rig directly to bore into outside country rock from tunnel initial stage support layer 1 is not less than 2 meters, clear hole back installation top layer extension outlet pipe 23 and bottom extension outlet pipe 24 of finishing, and be linked together top layer extension outlet pipe 23 and bottom extension outlet pipe 24's second end through three-way valve and vertical drain pipe 21, then through horizontal outlet pipe 22 drainage to ditch 9. The top layer extended drain pipes 23 and the bottom layer extended drain pipes 24 are generally arranged on two longitudinal sides of the annular drain pipe 25, and the arrangement of the top layer extended drain pipes 23 and the bottom layer extended drain pipes 24 can be properly encrypted if the water yield of surrounding rocks outside the section is large.
The above embodiments are merely preferred examples of the present invention, and not intended to limit the scope of the utility model, so that equivalent changes or modifications made based on the structure, characteristics and principles of the utility model as claimed should be included in the claims of the present invention.
Claims (10)
1. The utility model provides a drainage system device is prevented in rich water section tunnel, includes tunnel main part, tunnel main part includes that outside-in sets gradually tunnel initial stage props up protective layer, waterproof layer and inverted arch layer, its characterized in that:
the tunnel body is characterized in that drainage systems are respectively arranged at the bottoms of two sides of the tunnel body, each drainage system comprises a longitudinal drainage pipe, a transverse drainage pipe and an extension drainage pipe, the longitudinal drainage pipes longitudinally penetrate through the inverted arch layer and are arranged, the first ends of the extension drainage pipes transversely penetrate through the tunnel primary support layer and are far away from the tunnel primary support layer and are arranged in a protruding and extending mode towards the outer side, and the first ends of the transverse drainage pipes transversely penetrate through the inverted arch layer and are far away from the inverted arch layer and are arranged in a protruding and extending mode towards the inner side;
the second end of the extension water drain pipe and the second end of the transverse water drain pipe are respectively communicated with the longitudinal water drain pipe, the first end of the transverse water drain pipe is a water outlet, and a plurality of through holes are formed in the peripheral wall of the extension water drain pipe.
2. The water-rich tunnel water-proof and drainage system device according to claim 1, wherein:
the first port of the extension water drain pipe is plugged with geotextile, and the outer surface of the peripheral wall of the extension water drain pipe, which is provided with the through hole, is wrapped with geotextile.
3. The water-rich tunnel water-proof and drainage system device according to claim 1, wherein:
the included angle between the extended drain pipe and the horizontal direction is not less than 5 degrees.
4. The water-rich tunnel water-proof and drainage system device according to claim 1, wherein:
the longitudinal water drainage pipe is provided with a plurality of groups of three-way valves, and one group of three-way valves are respectively communicated with the longitudinal water drainage pipe, the transverse water drainage pipe and the extended water drainage pipe.
5. The water-rich tunnel water-proof and drainage system device according to claim 4, wherein:
the extended drain pipes comprise top extended drain pipes and bottom extended drain pipes, each group of three-way valves comprises an end three-way valve and a middle three-way valve, and the end three-way valves are respectively communicated with the bottom extended drain pipes, the longitudinal drain pipes and the transverse drain pipes;
and two ends of the middle three-way valve are respectively communicated with the longitudinal water discharge pipe, and the top end of the middle three-way valve is communicated with the top layer extended water discharge pipe.
6. The water-rich tunnel water-proof and drainage system device according to claim 1, wherein:
the length of the extended drain pipe, which is far away from the tunnel primary support layer and protrudes and extends towards the outside, is not less than 200 cm.
7. The water-rich tunnel water-proof and drainage system device according to claim 1, wherein:
the diameter of the through hole is larger than 6 mm.
8. The water-rich tunnel water-proof and drainage system device according to claim 1, wherein:
the longitudinal drain pipe, the transverse drain pipe and the extension drain pipe are all hard PVC pipes, the inner walls of the hard PVC pipes are smooth wall surfaces, and the diameters of inner holes of the hard PVC pipes are 100 millimeters.
9. The water-rich tunnel water-proof and drainage system device according to any one of claims 1 to 8, wherein:
the water-rich section tunnel water-proof and drainage system device further comprises an annular drainage pipe, wherein the annular drainage pipe is located in the waterproof layer, transverse section pipes are arranged at two ends of the bottom of the annular drainage pipe respectively, the transverse section pipes transversely penetrate through the inverted arch layer and are far away from the inverted arch layer and extend towards the inner side direction, and the transverse section pipes protrude out of one end of the inverted arch layer and are water outlets.
10. The water-rich tunnel water-proof and drainage system device according to claim 9, wherein:
the inner hole diameter of the annular drain pipe is 50 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122076134.XU CN215804715U (en) | 2021-08-30 | 2021-08-30 | Water-rich section tunnel water-proof and drainage system device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122076134.XU CN215804715U (en) | 2021-08-30 | 2021-08-30 | Water-rich section tunnel water-proof and drainage system device |
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| CN215804715U true CN215804715U (en) | 2022-02-11 |
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| CN202122076134.XU Active CN215804715U (en) | 2021-08-30 | 2021-08-30 | Water-rich section tunnel water-proof and drainage system device |
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- 2021-08-30 CN CN202122076134.XU patent/CN215804715U/en active Active
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