CN214577064U - Rich water zone section tunnel supporting construction - Google Patents

Abstract

A tunnel supporting structure of a water-rich section belongs to the technical field of tunnel engineering and comprises a concrete base and an arched supporting structure, wherein drainage ditches are respectively arranged on two sides of the bottom of the concrete base, the arched supporting structure is arranged above the concrete base, the arched supporting structure is sequentially provided with a corrugated plate support, a backfill layer, a waterproof filter layer and an outer supporting structure from inside to outside, a longitudinal drainage pipe is arranged at the bottom end of the waterproof filter layer, seepage holes are arranged on the longitudinal drainage pipe, the longitudinal drainage pipe is provided with a plurality of transverse drainage pipes communicated with the longitudinal drainage pipe along the length direction of the longitudinal drainage pipe, and the end parts of the transverse drainage pipes extend out of the corrugated plate support and are opposite to the drainage ditches, the service life of the tunnel structure is prolonged.

Description

Rich water zone section tunnel supporting construction

Technical Field

The utility model relates to a tunnel engineering technical field especially relates to a rich water district section tunnel supporting construction.

Background

The tunnel engineering has very strong disguise, and because the engineering geology and the hydrogeology that are located are comparatively complicated, the drainage system of preventing is the key factor of guaranteeing tunnel structure safety, normal operation. The water leakage can cause the damages of corrosion of steel bars, wet and slippery road surface and the like in the lining structure, and influences the durability and the operation safety of the tunnel engineering.

In newly-built railway, highway tunnel, current tunnel is prevented drainage system construction processes and is comparatively loaded down with trivial details, often can appear following problem: 1. the installation of water-proof and drainage plate and drainage blind pipe is not standard during the construction, causes the drainage system of preventing inefficacy, and water-proof and drainage plate service life is shorter moreover, and the drainage blind pipe easily takes place unfavorable consequences such as jam, fracture, disconnection, has greatly reduced tunnel structure's service life. 2. Lining fracture appears easily in rich water district tunnel lining, falls diseases such as piece, when adopting the buckled plate to consolidate existing rich water tunnel lining disease, often paint the shutoff to bolt and junction adoption and glue and handle, work load is very big like this, and when the shutoff effect is not good, the seepage can also appear through bolt hole or junction in the underground water behind the lining back simultaneously, not only influences driving safety, causes the influence to the anticorrosive of buckled plate moreover.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a rich water district section tunnel supporting construction that construction is convenient, the cost is low, the drainage effect is good, the antiseep is effectual.

In order to achieve the above object, the present invention provides a technical solution for solving the technical problem: rich water zone tunnel supporting construction, including concrete base and arch supporting construction, the bottom both sides of concrete base are provided with the escape canal respectively, the top of concrete base sets up arch supporting construction, arch supporting construction sets gradually buckled plate support, backfill layer, waterproof filter layer and outer supporting construction from inside to outside, the bottom of waterproof filter layer is provided with vertical drain pipe, be equipped with the infiltration hole on the vertical drain pipe, vertical drain pipe is provided with a plurality of transverse drain pipe with it intercommunication along its length direction, transverse drain pipe's tip stretches out behind the buckled plate support with the escape canal is relative.

Furthermore, the both ends that the buckled plate was strutted are provided with the angle steel, one side of angle steel pass through the bolt with the buckled plate is strutted fixedly and is linked to each other, the opposite side of angle steel is fixed continuous with the pre-buried bar planting in the concrete foundation.

Further, outer layer supporting construction includes two linings in the tunnel and tunnel preliminary bracing, two lining linings in the tunnel are in the inboard of tunnel preliminary bracing, the bottom both sides of two linings in the tunnel set up respectively the concrete base, angle steel outer lining have with the concrete placement district that the concrete base links to each other.

Further, outer supporting construction includes tunnel preliminary bracing, the concrete foundation includes tunnel invert and short side wall, tunnel preliminary bracing's inboard bottom sets up the tunnel invert, the tip of tunnel invert with one side of angle steel is fixed continuous, the both sides of tunnel invert inner wall set up respectively short side wall, short side wall sets up the escape canal on the wall.

Further, waterproof filter layer includes geotechnological cloth and prevents the drain bar, geotechnological cloth is fixed on the outer supporting construction, prevent that the drain bar is laid outside the geotechnological cloth, the both ends of geotechnological cloth will longitudinal drain pipe cladding location.

Furthermore, two ends of the waterproof and drainage plate are anchored on the concrete base through rivets and battens.

Further, the both ends cladding of preventing the drain bar is in the outside of geotechnological cloth, just prevent the drain bar with backfill layer the regional intussuseption that encloses between outer supporting construction and the concrete foundation seals up layer I.

Furthermore, a plurality of hot-melt gaskets are arranged on the geotextile, a metal gasket and a shooting nail are arranged in the middle of each hot-melt gasket, and the shooting nail penetrates through the metal gasket and the hot-melt gaskets to fix the geotextile in the outer layer supporting structure; the cross section of the hot-melt liner is of a concave structure, a depressed area is arranged in the middle of the hot-melt liner, a mounting hole is formed in the depressed area, the metal gasket is arranged in the depressed area, and the shooting nail sequentially penetrates through the metal gasket, the mounting hole and the geotextile and then is fixedly connected with the outer layer supporting structure.

Furthermore, the corrugated plate support comprises a plurality of sections of corrugated plates, and sealing layers are filled between every two adjacent sections of corrugated plates and are fixedly connected through bolt assemblies; the buckled plate is strutted and is greater than along the fore-and-aft length in tunnel the length of waterproof filter layer, just the buckled plate is strutted the backfill layer with it has blocking layer II to fill between the both ends of waterproof filter layer, the both ends that the buckled plate was strutted pass through anchor assembly with outer supporting construction is fixed continuous.

Furthermore, both ends of the longitudinal drain pipe are connected with pipe corners, and water outlets of the pipe corners are opposite to the drainage ditch.

The utility model has the advantages that:

1. the utility model discloses a lay waterproof filter layer in outer layer supporting construction inboard and carry out water repellent treatment, at the inboard pouring backfill layer of waterproof filter layer again, set up the buckled plate at backfill layer inboard at last and strut, not only can prevent the percolating water, can also consolidate the tunnel lining disease, and through the bottom cladding longitudinal drain pipe at waterproof filter layer, the water of lining cutting seepage and taking silt is through the filtration back of waterproof filter layer, clear water is in by the percolating water hole inflow longitudinal drain pipe, the condition of silt jam longitudinal drain pipe has been prevented, and when the water level in the longitudinal drain pipe is higher, water in the longitudinal drain pipe passes through in the transverse drain pipe inflow escape canal, can in time with outside the drainage tunnel of lining cutting's seepage, tunnel water drainage system's normal operating has been guaranteed.

2. The utility model provides a waterproof filter layer includes geotechnological cloth and prevents the drain bar, geotechnological cloth is fixed on outer supporting construction, play filterable effect, prevent that the drain bar lays and plays the effect that prevents the infiltration outside geotechnological cloth, geotechnological cloth's both ends will vertical drain pipe cladding location, make the lining cutting seepage and take the water of silt to get into in vertical drain pipe after geotechnological cloth's filtration, can be in time outside ponding discharge tunnel, the water in vertical drain pipe can not ooze, and wherein prevent that the drain bar is sealed shelters from between geotechnological cloth and backfill layer, the intraformational condition is backfilled in the water entering that has further prevented the seepage, supporting construction's leakage resistance has further been improved.

3. The utility model discloses an use hot melt liner, metal packing ring and penetrate the nail and fix geotechnological cloth on outer supporting construction, make the location of geotechnological cloth more firm stable.

4. The utility model discloses the buckled plate that sets up supports the length that is greater than waterproof filter layer along the fore-and-aft length in tunnel, and when the both ends that can guarantee the buckled plate to strut like this set up anchor assembly, can not punch through waterproof filter layer and cause the seepage, and the both ends that the buckled plate was strutted set up blocking layer II in addition, and the sealing layer is filled between a plurality of buckled plates that the buckled plate was strutted, appears leaking the problem of thick liquid when having avoided later stage packing backfill layer.

To sum up, this rich water district section tunnel supporting construction is simple, the good reliability, and the cost is low, drainage effect is good, the antiseep is effectual, has guaranteed tunnel drainage system's normal operating, has prolonged tunnel structure's life.

Drawings

The contents of the various figures of the specification and the labels in the figures are briefly described as follows:

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

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

FIG. 3 is a schematic diagram of a structure of an enlarged portion of FIG. 1;

FIG. 4 is a schematic view of an alternative configuration of the enlarged portion of FIG. 1;

FIG. 5 is a schematic structural view of a connection structure between the longitudinal drain pipe and the transverse drain pipe according to the present invention;

FIG. 6 is a schematic structural view of the connection between the corrugated plate support and the outer support structure of the present invention;

fig. 7 is a schematic structural view of the geotextile and drainage prevention plate laying structure of the present invention;

the labels in the above figures are: 1. the concrete foundation comprises a concrete base, 11 drainage ditches, 14 tunnel inverted arches, 15 short side walls, 2 corrugated plate supports, 21 corrugated plates, 3 backfill layers, 4 waterproof filter layers, 41 geotextile, 42 waterproof drain boards, 43 rivets, 44 battens, 45 blocking layers I, 5 outer layer supporting structures, 51 tunnel secondary linings, 52 tunnel primary supports, 6 longitudinal drain pipes, 61 water seepage holes, 62 pipe bends, 7 transverse drain pipes, 8 hot melt gaskets, 81 sunken regions, 82 mounting holes, 9 metal gaskets, 10 shooting nails, 12 angle steels, 13 concrete pouring regions, 16 sealing layers, 17 blocking layers II and 18 anchoring parts.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments, and the following embodiments are used for illustrating the present invention, but do not limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model discloses specific embodiment does:

example 1: as shown in fig. 1 and 3-7, the tunnel supporting structure of the water-rich section is a structure with a lining section, and comprises a concrete base 1 and an arch supporting structure, drainage ditches 11 are respectively arranged on two sides of the bottom of the concrete base 1, the arch supporting structure is arranged above the concrete base 1, the arch supporting structure is sequentially provided with a corrugated plate support 2, a backfill layer 3, a waterproof filter layer 4 and an outer layer supporting structure 5 from inside to outside, not only can prevent water leakage and can also reinforce tunnel lining diseases, a longitudinal drainage pipe 6 is arranged at the bottom end of the waterproof filter layer 4, a water seepage hole 61 is arranged on the longitudinal drainage pipe 6, the longitudinal drainage pipe 6 is provided with a plurality of transverse drainage pipes 7 communicated with the longitudinal drainage pipe along the length direction, the end parts of the transverse drainage pipes 7 extend out of the corrugated plate support 2 and are opposite to the drainage ditches 11, water leaking and carrying silt is filtered by the waterproof filter layer 4, the clear water has prevented that silt from blockking up the condition of longitudinal drain pipe 6 by in the infiltration hole 61 flow in longitudinal drain pipe 6, and when the water level in longitudinal drain pipe 6 was higher moreover, water in the longitudinal drain pipe 6 flowed into escape canal 11 through horizontal drain pipe 7 in, can in time be outside the water discharge tunnel of lining cutting seepage, guaranteed tunnel drainage system's normal operating.

Specifically, angle steel 12 is arranged at two ends of the corrugated plate support 2, one side of the angle steel 12 is fixedly connected with the corrugated plate support 2 through bolts, the other side of the angle steel 12 is fixedly connected with embedded steel bars in the concrete base 1, and the strength and the stability of the support structure are further improved.

Specifically, the outer layer supporting structure 5 comprises a tunnel secondary lining 51 and a tunnel primary support 52, the tunnel secondary lining 51 is lined on the inner side of the tunnel primary support 52 and is coated outside the whole supporting structure, concrete bases 1 are respectively arranged on two sides of the bottom of the tunnel secondary lining 51, a cable trench is arranged on the outer side of each concrete base 1, when two ends of the corrugated plate support 2, the backfill layer 3 and the waterproof filter layer 4 are fixed, angle steel 12 is temporarily fixed on the tunnel secondary lining 51, then a reinforcement cage is bound around the angle steel 12, a concrete pouring area 13 connected with the concrete base 1 is lined outside the angle steel 12, and end positioning of the corrugated plate support 2, the backfill layer 3 and the waterproof filter layer 4 is achieved.

Specifically, waterproof filter layer 4 wherein includes geotechnological cloth 41 and prevents drain bar 42, geotechnological cloth 41 is fixed on outer supporting construction 5, play filterable effect, prevent that drain bar 42 lays outside geotechnological cloth 41, play the effect that prevents the infiltration, the both ends of geotechnological cloth 41 are with vertical drain pipe 6 cladding location, make the lining cutting seepage and take in the water of silt gets into vertical drain pipe 6 after geotechnological cloth 41's filtration in, can in time flow into escape canal 11 through horizontal drain pipe 7 with ponding in the vertical drain pipe 6.

The installation method of the waterproof and drainage plate 42 comprises the following two methods, one is that two ends of the waterproof and drainage plate 42 are anchored on the concrete base 1 through rivets 43 and battens 44, and the waterproof and drainage plate 42 divides the longitudinal drainage pipe 6 and the geotextile 41 from the backfill layer 3, so that the condition that leaked water enters the backfill layer 3 is prevented; the other way is that the two ends of the water-proof drainage plate 42 are coated on the outer side of the geotextile 41, and the region enclosed by the water-proof drainage plate 42, the backfill layer 3, the outer-layer supporting structure 5 and the concrete base 1 is filled with the plugging layer I45, so that the condition that leaked water enters the backfill layer 3 is effectively prevented.

Specifically, a plurality of hot-melt gaskets 8 are arranged on the geotextile 41, the cross section of each hot-melt gasket 8 is of a concave structure, a concave area 81 is arranged in the middle of each hot-melt gasket 8, a mounting hole 82 is arranged in each concave area 81, the metal gasket 9 is arranged in each concave area 81, and the shooting nail 10 is fixedly connected with the outer-layer supporting structure 5 after sequentially penetrating through the metal gasket 9, the mounting hole 82 and the geotextile 41, so that the geotextile 41 is positioned more firmly and stably.

Specifically, 2 is strutted to buckled plate wherein includes multistage buckled plate 21, it has sealing layer 16 and links to each other through bolt assembly is fixed to fill between two sections adjacent buckled plates 21, the sealed effect has been improved, the buckled plate is strutted 2 and is greater than the length of waterproof filter layer 4 along the fore-and-aft length in tunnel, anchoring member 18 and outer supporting construction 5 are passed through to the both ends that the buckled plate was strutted 2 and are fixed continuous, and the buckled plate is strutted 2, it has shutoff layer II 17 to fill between the both ends of backfill layer 3 and waterproof filter layer 4, when having guaranteed that the both ends that the buckled plate was strutted 2 set up anchoring member 18, waterproof filter layer 4 can not be perforated and cause the seepage, and the problem of leaking when later stage packing backfill layer has been avoided in the setting of sealing layer 16 and shutoff layer II 17.

In addition, the two ends of the longitudinal drain pipe 6 are connected with the corner 62, and the water outlet of the corner 62 is opposite to the drainage ditch 11, so that the accumulated water in the longitudinal drain pipe 6 is drained into the drainage ditch 11, and the problem of water seepage at the end part of the longitudinal drain pipe 6 is solved.

Example 2:

as shown in fig. 2, the water-rich zone tunnel supporting structure is a structure of a non-lining zone, and the structure is different from that of example 1 in that: outer supporting construction 5 wherein includes tunnel preliminary bracing 52, concrete foundation 1 includes tunnel invert 14 and short side wall 15, tunnel preliminary bracing 52's inboard bottom sets up tunnel invert 14, the both sides of tunnel invert 14 inner wall set up short side wall 15 respectively, set up escape canal 11 and cable pit on the short side wall 15, one side of angle steel 12 is passed through the bolt and is strutted 2 fixed links to each other with the buckled plate, the opposite side of angle steel 12 is fixed a position fixedly and not contact with short side wall 15 through pre-buried bar planting and tunnel invert 14, consequently, need not ligature steel reinforcement cage and concreting around angle steel 12.

To sum up, this rich water district section tunnel supporting construction is simple, the good reliability, and the cost is low, drainage effect is good, the antiseep is effectual, has guaranteed tunnel drainage system's normal operating, has prolonged tunnel structure's life.

The foregoing is merely illustrative of some of the principles of the present invention and the description is not intended to limit the invention to the specific constructions and applications shown, so that all modifications and equivalents that may be utilized are within the scope of the invention.

Claims (10)

1. A tunnel supporting structure of a water-rich section is characterized by comprising a concrete base (1) and an arch supporting structure, drainage ditches (11) are respectively arranged at two sides of the bottom of the concrete base (1), the arched supporting structure is arranged above the concrete base (1), the arched supporting structure is sequentially provided with a corrugated plate support (2), a backfill layer (3), a waterproof filter layer (4) and an outer layer supporting structure (5) from inside to outside, the bottom end of the waterproof filter layer (4) is provided with a longitudinal drain pipe (6), the longitudinal drain pipe (6) is provided with a water seepage hole (61), the longitudinal water discharge pipe (6) is provided with a plurality of transverse water discharge pipes (7) communicated with the longitudinal water discharge pipe along the length direction, the end part of the transverse drainage pipe (7) extends out of the rear part of the corrugated plate support (2) and is opposite to the drainage ditch (11).

2. The water-rich section tunnel supporting structure of claim 1, wherein: the both ends that the buckled plate was strutted (2) are provided with angle steel (12), one side of angle steel (12) pass through the bolt with the buckled plate is strutted (2) and is fixed continuous, the opposite side of angle steel (12) is fixed continuous with the pre-buried bar planting in concrete foundation (1).

3. The water-rich section tunnel supporting structure of claim 2, wherein: the outer layer supporting structure (5) comprises a tunnel secondary lining (51) and a tunnel primary support (52), the tunnel secondary lining (51) is lined on the inner side of the tunnel primary support (52), the concrete bases (1) are arranged on two sides of the bottom of the tunnel secondary lining (51) respectively, and concrete pouring areas (13) connected with the concrete bases (1) are lined outside the angle steel (12).

4. The water-rich section tunnel supporting structure of claim 2, wherein: outer supporting construction (5) are including tunnel preliminary bracing (52), concrete foundation (1) is including tunnel invert (14) and short side wall (15), the inboard bottom of tunnel preliminary bracing (52) sets up tunnel invert (14), the tip of tunnel invert (14) with one side of angle steel (12) is fixed continuous, the both sides of tunnel invert (14) inner wall set up respectively short side wall (15), set up on short side wall (15) escape canal (11).

5. The water-rich zone tunnel supporting structure according to any one of claims 1 to 4, wherein: waterproof filter layer (4) include geotechnological cloth (41) and prevent drain bar (42), geotechnological cloth (41) are fixed on outer supporting construction (5), prevent that drain bar (42) are laid outside geotechnological cloth (41), the both ends of geotechnological cloth (41) will vertical drain pipe (6) cladding location.

6. The water-rich section tunnel supporting structure of claim 5, wherein: two ends of the waterproof and drainage plate (42) are anchored on the concrete base (1) through rivets (43) and battens (44).

7. The water-rich section tunnel supporting structure of claim 5, wherein: the both ends cladding of preventing drain bar (42) is in the outside of geotechnological cloth (41), just prevent drain bar (42) with backfill layer (3) the regional intussuseption that encloses between outer supporting construction (5) and concrete foundation (1) is filled shutoff layer I (45).

8. The water-rich section tunnel supporting structure of claim 5, wherein: the geotextile (41) is provided with a plurality of hot-melt gaskets (8), the middle parts of the hot-melt gaskets (8) are provided with metal gaskets (9) and shooting nails (10), and the shooting nails (10) penetrate through the metal gaskets (9) and the hot-melt gaskets (8) and then fix the geotextile (41) in the outer-layer supporting structure (5); the cross-section of hot melt liner (8) sets up to the structure of type character cut in bas-relief, the middle part of hot melt liner (8) sets up depressed area (81), be provided with mounting hole (82) in depressed area (81), metal packing ring (9) set up in depressed area (81), penetrate nail (10) and pass in proper order behind metal packing ring (9), mounting hole (82), geotechnological cloth (41) with outer supporting construction (5) are fixed continuous.

9. The water-rich section tunnel supporting structure of claim 1, wherein: the corrugated plate support (2) comprises a plurality of sections of corrugated plates (21), and a sealing layer (16) is filled between every two adjacent sections of corrugated plates (21) and is fixedly connected through a bolt assembly; the buckled plate is strutted (2) and is greater than along the fore-and-aft length in tunnel the length of waterproof filter layer (4), just the buckled plate is strutted (2) backfill layer (3) and it has blocking layer II (17) to fill between the both ends of waterproof filter layer (4), the both ends that the buckled plate was strutted (2) pass through anchor assembly (18) with outer supporting construction (5) are fixed continuous.

10. The water-rich section tunnel supporting structure of claim 1, wherein: the both ends of vertical drain pipe (6) are connected with corner (62), the delivery port of corner (62) with escape canal (11) are relative.

Images