CN209637782U - Tunnel water proofing discharge structure - Google Patents

Abstract

The utility model discloses a kind of tunnel water proofing discharge structures, the tunnel water proofing discharge structure includes the preliminary bracing layer that sets gradually of wall surface in tunneling, waterproof roll layer, the tunnel arch wall of secondary moulded lining layer composition, in tunneling bottom surface, the two sides of liner structure are respectively equipped with the lateral sulcus longitudinally extended, longitudinal blind pipe is embedded in tunnel arch wall bottom, the inward at both ends of longitudinal blind pipe, which is bent and is communicated between lateral sulcus preliminary bracing layer and waterproof roll layer, is equipped at intervals with circle draining plate, lateral spare tapping pipe is additionally provided in the bottom of tunnel arch wall, the outer end of spare tapping pipe is communicated to corresponding lateral sulcus, inner end is located at preliminary bracing layer, the utility model is by being arranged spare tapping pipe, after the concrete blocking that the two-port of longitudinal blind pipe is solidified, spare tapping pipe can be enabled, reduce the water pressure at the tunnel arch wall back side, it is anti- Only cause tunnel structure impaired since hydraulic pressure is excessively high.

Description

Tunnel water proofing discharge structure

Technical field

The utility model relates to technical field of tunnel construction, and in particular to a kind of tunnel water proofing discharge structure.

Background technique

In Tunnel Engineering, need to bury circle draining channel and longitudinal drainage channel, general ring in the tunnel wall constructed It is communicated to longitudinal drainage channel to drainage channel, circle draining channel and longitudinal drainage channel are permeable structure, serve as a contrast tunnel The ponding for building behind is discharged in the survey ditch of tunnel two sides by the outlet in longitudinal drainage channel, reduces liner structure behind hydraulic pressure Power.

When tunnel-liner backfills mortar depositing construction, since the concrete in injection trolley formwork has a certain pressure, when slip casting, is starched Liquid may enter longitudinal drainage channel and circle draining channel and flow out, need to be by longitudinal drainage channel to prevent slurries from flowing out Outlet obstruction, therefore a certain amount of cement grout can be accumulated in drainage pipeline to cause the discharge outlet in longitudinal drainage channel to occur stifled Plug, tunnel lining structure behind water cannot be smoothly discharged, and water pressure increase in liner structure behind can seriously affect tunnel structure The probability of stability, lining cutting infiltration greatly improves.

The Chinese patent literature of Publication No. CN104879164A discloses a kind of tunnel circle draining structure, the tunnel ring It is embedded between preliminary bracing layer and secondary lining layer to discharge structure using the perishable rope made of hemp, builds up initial stage in engineering, only It can be drained in a small amount by the water imbibition of the rope made of hemp, after need to waiting until that the rope made of hemp etches, natural drainage channel could be formed, in engineering Build up initial stage to the rope made of hemp corrosion interval time it is too long, tunnel wall back side water pressure is higher during this, and tunnel wall has biggish damage The risk of leak.

The Chinese patent literature of Publication No. CN207297089U describes a kind of suitable for ballastless track bed tunnel inverted arch Novel waterproof and water drainage system comprising the tunnel drainage system with tunnel lateral sulcus, tunnel Central drain, tunnel bottom structure includes inverted arch It is easy to happen blocking with longitudinal blind pipe of inverted arch preliminary bracing, tunnel waterproof system setting, the later period needs repairing, due to draining Mouth quantity is more, and maintenance cost is higher.

For these reasons, it is necessary to which later period maintenance cost can be reduced, can effectively arrange tunnel back side water by providing one kind Out to reduce the water-proof drainage structure of tunnel back side hydraulic pressure.

Utility model content

The utility model is intended to provide a kind of tunnel water proofing discharge structure, and the drainage hole for solving tunnel in the prior art is easy It blocks, so that tunnel lining structure back side water pressure increases, and then tunnel lining structure is caused to have damage the technology of risk Problem.

In order to solve the above technical problems, the technical solution adopted by the present invention is that:

A kind of tunnel water proofing discharge structure is designed, it is the preliminary bracing layer that is set gradually including the wall surface in tunneling, anti- The tunnel arch wall of water coiled material layer, secondary moulded lining layer composition, in tunneling bottom surface, the two sides of liner structure are respectively equipped with vertical To the lateral sulcus of extension, it is embedded with longitudinal blind pipe in tunnel arch wall bottom, the inward at both ends of the longitudinal direction blind pipe is bent and is communicated to The lateral sulcus is equipped at intervals with circle draining blind pipe or/and in construction joint two sides between the preliminary bracing layer and waterproof roll layer Equipped with circle draining plate, the both ends of the circle draining plate or/and circle draining blind pipe are communicated to corresponding longitudinal blind pipe； Lateral spare tapping pipe is additionally provided in the bottom of tunnel arch wall, the outer end of the spare tapping pipe is communicated to the corresponding side Ditch, inner end are located at the preliminary bracing layer.

Preferably, the inner end mouthful of the spare tapping pipe is sealed with adhesive tape, and external port binds geotextiles, described standby Spacer bar is set with sluicing bottom of the tube, tunnel wall surface is inserted into the inner end of the spacer bar.

Preferably, piece spare tapping pipe, tunnel circular construction joint are respectively set in the two sides of tunnel circular construction joint Adjacent two spare sluicing tube spacing 50-80cm of two sides.

Preferably, longitudinal blind pipe is punching bellows, and the longitudinal direction blind pipe is located at the preliminary bracing layer and waterproof Between coiled material layer, C15 non-sand concrete displacement hull is poured around the longitudinal direction blind pipe；It is wrapped outside the spare tapping pipe and longitudinal blind pipe One layer of geotextiles are wrapped up in, one layer of geotextiles are equipped between the preliminary bracing layer and waterproof roll layer.

Preferably, two sides are respectively equipped with the bottom discharge blind pipe longitudinally extended below the liner structure of tunneling bottom surface, Transverse drainage blind pipe is equipped between the bottom discharge blind pipe.

Preferably, the buried rubber fastening band in the middle part of the circular construction joint of tunnel arch wall and deformation construction joint is equipped with, Top, which is located at below the waterproof roll layer, is equipped with back sticking type rubber fastening band.

Preferably, it is equipped with back sticking type rubber fastening band in the bottom of the circular construction joint of tunnel inverted arch and deformation construction joint, Middle part be equipped in buried rubber fastening band；Also interval is embedded with longitudinal seamless steel pipe at the deformation construction joint of tunnel inverted arch, Butter is filled in the seamless steel pipe.

Preferably, it is equipped with pre- patch flexible porous tube along longitudinal direction below the top waterproof roll layer of tunnel arch wall, it is described pre- The one end for pasting flexible porous tube is equipped with vertical coating steel pipe, and it is flexible porous that one end of the coating steel pipe is communicated to the pre- patch Pipe, the other end are communicated to the lower surface of tunnel arch wall.

The advantageous effects of the utility model are:

1. tunnel water proofing discharge structure provided by the utility model is equipped with the spare tapping pipe of spare tapping pipe, in longitudinal blind pipe The concrete blocking that is solidified of two-port after, spare tapping pipe can be enabled, spare tapping pipe is straight tube, and outer end is using transparent Rubber belt sealing, after tunnel arch wall pours, using cutter ring cutting adhesive tape can water flowing, reduce the tunnel arch wall back side hydraulic pressure Power prevents from causing tunnel structure impaired since hydraulic pressure is excessively high.

2. not needing to repair it and get through, reduce dimension after the concrete blocking that the two-port of longitudinal blind pipe is solidified Expense is repaired, and reduces the risk of maintenance bring tunnel structure damage.

3. the deformation construction joint location of inverted arch is equipped with seamless steel pipe in tunnel, the deformation for being both suitable for structure longitudinal extension is wanted It asks, and the sedimentation of tunable deformation construction joint two sides, advantageously reduces differential settlement, reduce waterstop amount of tension, extension stops Water band service life, enhances waterproof effect.

4. the tunnel water proofing discharge structure is buried in each circular construction joint and deformation joint location equipped with back-adhering waterstop Formula waterstop, so that weaker tunnel circular construction joint and deformation joint location have preferable waterproof performance.

5. the bottom in tunnel is equipped with bottom longitudinal direction blind pipe, can will be outside tunnel lining structure bottom by bottom longitudinal direction blind pipe Water discharge, prevent tunnel lining structure bottom water pressure excessive.

Detailed description of the invention

Fig. 1 is the cross-sectional structure schematic diagram of 1 tunnel water proofing discharge structure of the utility model embodiment；

Fig. 2 is the portion the A enlarged drawing in Fig. 1；

Fig. 3 is the tiling schematic diagram of waterproof roll layer in 1 tunnel water proofing discharge structure of the utility model embodiment；

Fig. 4 is the fixed schematic diagram of installation of waterproof roll layer in 1 tunnel water proofing discharge structure of the utility model embodiment；

Fig. 5 is the scheme of installation of circumferential drain bar in 1 tunnel water proofing discharge structure of the utility model embodiment；

Fig. 6 is the mounting plane figure of spare drain hole in 1 tunnel water proofing discharge structure of the utility model embodiment；

Fig. 7 is the installation cross-sectional view of spare drain hole in 1 tunnel water proofing discharge structure of the utility model embodiment；

Fig. 8 is for circular construction joint location in 1 tunnel water proofing discharge structure of the utility model embodiment and deformation construction joint The cross-sectional structure schematic diagram of section；

Fig. 9 is the longitudinal cross-section structure in circular construction joint location in 1 tunnel water proofing discharge structure of the utility model embodiment Schematic diagram；

Figure 10 is the longitudinal cross-section structure that construction joint location is deformed in 1 tunnel water proofing discharge structure of the utility model embodiment Schematic diagram

Figure 11 is that vault backfills slip casting schematic diagram behind in 1 tunnel water proofing discharge structure of the utility model embodiment；

Figure 12 is the longitudinal profile that vault backfills slip casting behind in 1 tunnel water proofing discharge structure of the utility model embodiment Figure；

Figure 13 is the cross-sectional structure schematic diagram of 2 tunnel water proofing discharge structure of the utility model embodiment；

Figure 14 is the vertical of the circular construction joint location of tunnel inverted arch in 2 tunnel water proofing discharge structure of the utility model embodiment To cross section structure schematic diagram；

Figure 15 is the vertical of the deformation construction joint location of tunnel inverted arch in 2 tunnel water proofing discharge structure of the utility model embodiment To cross section structure schematic diagram.

In figure, each label signal are as follows: preliminary bracing layer 11, country rock 111, waterproof roll layer 12, geotextiles 121, riveting group Part 122, hot melt liner 1221, nailing 1222, metal washer 1223, abutment wall portion 123, crown portion 124, secondary moulded lining layer 13, secondary moulded lining layer root 131, longitudinal construction joint 132, in buried rubber fastening band 133, circular construction joint 134, trolley Template 135, template aperture 1351, in buried rubber fastening band 136, back sticking type rubber fastening band 137, deformation construction joint 138, de- Empty portion 139, bottom plate 141, back sticking type rubber fastening band 1411, discharge conduit 142, lateral sulcus 1421, side gutter 1422, filling Layer 143, railway roadbed 1431, in buried rubber fastening band 1432, longitudinal blind pipe 151, bending section 1511, C15 non-sand concrete displacement hull 1512, circle draining plate 16, spare tapping pipe 17, adhesive tape 171, spacer bar 172, pre- patch flexible porous tube 181, zinc-plated Steel pipe 182, internal rail top surface 192, preliminary bracing layer 21, waterproof roll layer 22, secondary moulded lining layer 23, becomes tunnel middle line 191 Shape construction joint 232, seamless steel pipe 233, bottom preliminary bracing layer 241, back sticking type rubber fastening band 2411, the secondary mould in bottom build lining Course 242, in buried rubber fastening band 2421, filled layer 243.

Specific embodiment

Illustrate specific embodiment of the present utility model with reference to the accompanying drawings and examples, but following embodiment only uses It is described in detail the utility model, does not limit the scope of the utility model in any way.

During whole constructing tunnel, the form of construction work of tunnel lining structure, I, II grade of country rock are determined according to country rock grade Coating combination it is good, be generally not in unstable bolck, and the bite force of the structural plane of III, IV, V grade of country rock hole section is weak, With more unstable bolck, therefore, in I, II grade of country rock hole section, the bottom of tunnel lining structure is construction of bottom plates mode, In III, IV, V grade of country rock hole section, the bottom of tunnel lining structure needs to carry out inverted arch construction.

Embodiment 1:

A kind of tunnel water proofing discharge structure, also referring to Fig. 1 to Figure 10.

As depicted in figs. 1 and 2, tunnel water proofing discharge structure provided in this embodiment is for I, II grade of country rock hole section, the tunnel Road water-proof drainage structure includes wall surface the preliminary bracing layer 11, waterproof roll layer 12, the secondary mould that set gradually in tunneling Building lining layer 13, preliminary bracing layer 11 are to be injected in the concrete mud on tunneling wall surface or elder generation on tunneling wall surface Anchor pole fill-before-fire concrete mud is squeezed into, one layer of geotextiles 121 are equipped between preliminary bracing layer 11 and waterproof roll layer 12, Geotextiles 121 have good water permeability, and can be protected from waterproof roll layer 12, prevent it to be punctured, secondary mould builds lining Course 13 be by below geotextiles 121 supporting trolley formwork after-pouring concrete formed.By preliminary bracing layer 11, waterproof roll Material layer 12, secondary moulded lining layer 13 form tunnel arch wall.

As shown in Fig. 3-1 and Fig. 3-2, waterproof roll layer 12 by rivet component 122 be fixed on poured on country rock 111 just On phase branch sheath 11, the two sides up and down of waterproof roll layer 12 are abutment wall portion 123, and middle section is crown portion 124, abutment wall portion 123 Corresponding on the abutment wall for being laid on tunnel arch wall, crown portion 124, which corresponds to, to be laid on the vault of tunnel arch wall, abutment wall portion 123 On riveting component 122 it is more sparse, the riveting component 122 in crown portion 124 is more dense.

Riveting component 122 includes 1221, nailing 1222, metal washer 1223 of hot melt liner, and fixed geotextiles 121, which use, penetrates Metal washer 1223 is pressed under nailing 1222 by nail gun, and hot melt liner 1221 is pressed under metal washer 1223, washer is heated Welding uses pressure welding device between 1221 and waterproof roll layer 12, and the welding of adjacent waterproof roll is using double slit heat on waterproof roll layer 12 Fusing soldering welder.

Tunneling bottom surface liner structure includes bottom plate 141 and discharge conduit 142, is equipped on the inside of discharge conduit 142 longitudinal The lateral sulcus 1421 of extension, outside are equipped with side gutter 1422, and bottom plate 141 is concrete lift, and top is filled layer 143, filled layer 143 uses C20 concrete placings, and it is railway roadbed at the top of filled layer 143 that the intensity of bottom plate 141, which is higher than filled layer 143, 1431, it is internal rail top surface 192 at the top of railway roadbed 1431, is laid with rubble on railway roadbed 1431, track is laid on rubble, entire tunnel is in tunnel Middle line 191 two sides in road are symmetrical.

Side gutter 1422 and the top surface of railway roadbed 1431 pass through transverse water drain pipe 1423 and are communicated to lateral sulcus 1421, laterally let out Water pipe 1423 is internal diameter 50mm pipeline, and the interval 3-5m is laid along longitudinal direction by lateral sulcus 1421.When draining, the water of internal rail top surface is arranged Enter side gutter 1422, the water in side gutter 1422 and railway roadbed 1431 is discharged into lateral sulcus 1421, eventually by lateral sulcus 1421 are discharged to outside tunnel.

It is embedded with longitudinal blind pipe 151 in tunnel arch wall bottom, wraps up one layer of geotextiles, longitudinal blind pipe 151 outside longitudinal blind pipe Both ends be bending section 1511, bending section 1511 curves inwardly and is communicated to lateral sulcus 1421, the bottom of secondary moulded lining layer 13 For secondary moulded lining layer root 131, between secondary moulded lining layer root 131 and the main body on secondary 13 top of moulded lining layer Equipped with longitudinal construction joint 132, be equipped among longitudinal construction joint 132 in buried rubber fastening band 133, longitudinal blind pipe 151 is embedded in Between preliminary bracing layer 11 and waterproof roll layer 12, one layer of geotextiles are wrapped up outside longitudinal blind pipe 151, longitudinal blind pipe 151 is interior The punching bellows of diameter 107mm pours C15 non-sand concrete displacement hull 1512, C15 non-sand concrete displacement hull around longitudinal blind pipe 151 1512 inside are coarse texture, have water permeability, and the water in country rock enters C15 without sand by the crack on preliminary bracing layer 11 Concrete displacement hull 1512, and eventually enter into longitudinal blind pipe 151 and be drained into lateral sulcus 1421.

As shown in figure 4, being respectively provided with a circumferential row in construction joint two sides between preliminary bracing layer 11 and waterproof roll layer 12 Water plate 16, the width L1 of each circle draining plate 16 are 50cm,

A longitudinal blind pipe 151, the two 16 the same sides of circle draining plate are buried respectively in the two sides of each ring tunnel arch wall End be communicated to corresponding longitudinal blind pipe 151, the water in country rock enters circle draining by the crack on preliminary bracing layer 11 Plate 16, then longitudinal blind pipe 151 is discharged by circle draining plate 16, it is ultimately discharged into lateral sulcus 1421, to reduce the tunnel arch wall back side Water pressure.

Further, in water abundant ground, the circle draining blind pipe of φ 50mm, the circumferential direction be there also is provided according to longitudinal pitch 2m The both ends of draining blind pipe are also communicated to corresponding longitudinal blind pipe.

Further, as shown in Fig. 5-1 and Fig. 5-2, lateral spare tapping pipe 17 is additionally provided in the bottom of tunnel arch wall, Specifically, about 10 meters of a ring tunnel arch wall length, about 9 meters of spacing between the two-port of longitudinal blind pipe 151, a ring tunnel arch wall exists The two sides of longitudinal blind pipe 151 are respectively provided with a spare tapping pipe 17, and spare tapping pipe 17 is located at same height with longitudinal blind pipe 151 Journey.The outer end of spare tapping pipe 17 be communicated to corresponding lateral sulcus 1421 and binding geotextiles, inner end be located at preliminary bracing layer 11 and It is sealed with adhesive tape 171.

Trolley formwork 135 corresponds to 1511 end of bending section of longitudinal blind pipe 151 and the outer end of spare tapping pipe 17 and is all provided with There is template aperture 1351, in pre-buried spare tapping pipe 17, wraps up one layer of geotextiles, spare tapping pipe 17 outside spare tapping pipe 17 Outer end pass through trolley formwork 135 template aperture 1351, spare 17 bottom of tapping pipe be arranged spacer bar 172, supporting steel In the preliminary bracing layer 11 and country rock of the inner end insertion tunnel wall surface of muscle 172,172 diameter 16mm of spacer bar, to guarantee to support It is firm.

It is circular construction joint 134 between adjacent two rings tunnel arch wall, in tunnel, the two sides of circular construction joint 134 are respectively arranged one The spare tapping pipe 17 of root, spacing 60cm between adjacent two spare tapping pipes 17 of 134 two sides of tunnel circular construction joint.

After the blocking of 1511 end of bending section of longitudinal blind pipe 151, water is accumulated in longitudinal blind pipe 151 leads to longitudinal blind pipe 151 hydraulic pressure increases nearby, and contact point hydraulic pressure is small between spare tapping pipe 17 and preliminary bracing layer 11, water can flow to from high pressure It is excluded at low pressure and along spare tapping pipe 17, prevents tunnel arch wall back side hydraulic pressure is excessive from causing liner structure unstable or damaging It is bad.

It is higher to waterproof ability requirement at the construction joint and deformation construction joint of two ring tunnel arch walls, therefore, such as Fig. 7 institute Show, at circular construction joint 134 or deformation construction joint 138, back sticking type rubber fastening band 1411, In is equipped at the top of bottom plate 141 Buried rubber fastening band 1432 in being embedded in the middle part of filled layer 143.As shown in Fig. 8-1 and Fig. 8-2, in secondary moulded lining layer 13 Buried rubber fastening band 136 in being inside equipped with is located at below waterproof roll layer 12 at the top of secondary moulded lining layer 13 and is equipped with back Mounted rubber fastening band 137, in buried rubber fastening band 136, in buried 1432 width L2 of rubber fastening band be 40cm.

Further, two sides are respectively equipped with the bottom discharge blind pipe longitudinally extended, bottom discharge blind pipe below bottom plate 141 Between be equipped with transverse drainage blind pipe, the water of the lower section of bottom plate 141 is discharged by bottom discharge blind pipe by transverse drainage blind pipe, is being passed through Water is discharged to outside tunnel by bottom discharge blind pipe, prevents 141 lower section hydraulic pressure of bottom plate excessive.

As shown in Figure 9 and Figure 10, when pouring secondary moulded lining layer 13, the top of secondary moulded lining layer 13 can exist It comes to nothing portion 139, leads to leakiness at the top of tunnel arch wall, be unfavorable for water-proof drainage, therefore, in the top waterproof roll of tunnel arch wall 12 lower section of layer is equipped with pre- patch flexible porous tube 181 along longitudinal direction, and the pre- flexible porous tube 181 that pastes is close to the one of trolley formwork end face 1352 End is equipped with vertical coating steel pipe 182,182 internal diameter 30cm of coating steel pipe, and one end is communicated to pre- patch flexible porous tube 181, separately One end is communicated to the lower surface of tunnel arch wall, can be soft to pasting in advance by coating steel pipe 182 after trolley formwork 135 is removed Water pipe 181 injects concrete grout, and concrete grout, full of portion 139 of entirely coming to nothing, makes tunnel arch wall top along pre- patch flexible porous tube 181 Portion's filling is closely knit.

Embodiment 2

A kind of tunnel water proofing discharge structure, also referring to Figure 11 to Figure 12-2.

As shown in figure 11, tunnel water proofing discharge structure provided in this embodiment is for III, IV, V grade of country rock hole section, with reality The difference for applying example 1 is, is not only provided on the top of tunneling by preliminary bracing layer 21, waterproof roll layer 22, secondary mould The tunnel arch wall that building lining layer 23 forms also is equipped with tunnel inverted arch in the bottom of tunneling, and tunnel inverted arch includes bottom initial stage Branch sheath 241, the secondary moulded lining layer 242 in bottom and filled layer 243, to enhance the support capacity in entire tunnel.

As shown in Figure 12-1,231 location of circular construction joint of inverted arch in tunnel, in the secondary moulded lining layer 242 in bottom Between be equipped in buried rubber fastening band 2421, in bottom, the lower surface of secondary moulded lining layer 242 is embedded with back sticking type rubber and stops Water band 2411, in buried rubber fastening band 2421 and 2411 width of back sticking type rubber fastening band in 40cm, prevent water by circumferential direction Construction joint 231 penetrates into.

Further, as shown in fig. 12-2, it is also spaced and is embedded in the bottom in 232 location of deformation construction joint of tunnel inverted arch Longitudinal seamless steel pipe 233, seamless steel pipe 233 is interior to fill butter, prevents seamless steel pipe 233 from getting rusty, 233 company of playing of seamless steel pipe The effect for connecing two ring tunnel inverted arch, prevent tunnel inverted arch part deformation occurs destroy waterproof ability.

Since the two-port of longitudinal blind pipe is easy the concrete being solidified blocking, after later period tunnel comes into operation, part hole Section draining is difficult, and can exclude water by spare tapping pipe, has both reduced the water pressure at the tunnel arch wall back side, has prevented due to hydraulic pressure mistake It is impaired that height leads to tunnel structure, while avoiding and drilling through drain hole again, has saved cost.

The utility model is described in detail above in conjunction with drawings and examples, still, the skill of technical field Art personnel, can also be to each specific in above-described embodiment it is understood that without departing from the purpose of the present invention Parameter changes, and forms multiple specific embodiments, is the common variation range of the utility model, no longer detailed one by one herein It states.

Claims (8)

1. a kind of tunnel water proofing discharge structure, preliminary bracing layer, the waterproof roll set gradually including the wall surface in tunneling The tunnel arch wall of layer, secondary moulded lining layer composition, in tunneling bottom surface, the two sides of liner structure are respectively equipped with longitudinal extension Lateral sulcus, be embedded with longitudinal blind pipe in tunnel arch wall bottom, the inward at both ends of the longitudinal direction blind pipe is bent and is communicated to the side Ditch, which is characterized in that circle draining blind pipe is equipped at intervals between the preliminary bracing layer and waterproof roll layer or/and in construction joint Two sides are equipped with circle draining plate, and the both ends of the circle draining plate or/and circle draining blind pipe are communicated to the corresponding longitudinal direction Blind pipe；Lateral spare tapping pipe is additionally provided in the bottom of tunnel arch wall, the outer end of the spare tapping pipe is communicated to corresponding The lateral sulcus, inner end are located at the preliminary bracing layer.

2. tunnel water proofing discharge structure according to claim 1, which is characterized in that use the inner end mouthful of the spare tapping pipe Adhesive tape sealing, external port bind geotextiles, and spacer bar is arranged in the spare sluicing bottom of the tube, the spacer bar Tunnel wall surface is inserted into inner end.

3. tunnel water proofing discharge structure according to claim 1, which is characterized in that in tunnel, the two sides of circular construction joint are each A piece spare tapping pipe, adjacent two spare sluicing tube spacing 50-80cm of tunnel circular construction joint two sides are set.

4. tunnel water proofing discharge structure according to claim 1, which is characterized in that the longitudinal direction blind pipe is punching ripple Pipe, the longitudinal direction blind pipe pour C15 without sand around the longitudinal direction blind pipe between the preliminary bracing layer and waterproof roll layer Concrete displacement hull；One layer of geotextiles are wrapped up outside the spare tapping pipe and longitudinal blind pipe；The preliminary bracing layer and waterproof roll One layer of geotextiles are equipped between layer.

5. tunnel water proofing discharge structure according to claim 1, which is characterized in that tunneling bottom surface liner structure with Lower two sides are respectively equipped with the bottom discharge blind pipe longitudinally extended, are equipped with transverse drainage blind pipe between the bottom discharge blind pipe.

6. tunnel water proofing discharge structure according to claim 1, which is characterized in that tunnel arch wall circular construction joint and The middle part of deformation construction joint be equipped in buried rubber fastening band, top, which is located at below the waterproof roll layer, is equipped with back sticking type rubber Waterstop.

7. tunnel water proofing discharge structure according to claim 1, which is characterized in that in tunnel the circular construction joint of inverted arch and Deform construction joint bottom be equipped with back sticking type rubber fastening band, middle part be equipped in buried rubber fastening band；The change of inverted arch in tunnel Also interval is embedded with longitudinal seamless steel pipe at shape construction joint, fills butter in the seamless steel pipe.

8. tunnel water proofing discharge structure according to claim 1, which is characterized in that in the top waterproof roll of tunnel arch wall Layer lower section is equipped with pre- patch flexible porous tube along longitudinal direction, and one end of the pre- patch flexible porous tube is equipped with vertical coating steel pipe, institute The one end for stating coating steel pipe is communicated to the pre- patch flexible porous tube, and the other end is communicated to the lower surface of tunnel arch wall.