阅读说明：本技术 一种隧道防排水系统 (A kind of tunnel waterproof and water drainage system ) 是由 王亚琼 彭兴彬 刘宝平 杨武策 张卫东 王志丰 任锐 王程昱 李嘉琦 于 2019-09-27 设计创作，主要内容包括：本发明公开了一种隧道防排水系统,包括排水缝隙,排水缝隙设置在隧道二次衬砌的前施工衬砌段与后施工衬砌段之间,排水缝隙沿隧道拱面环向设置；可排水止水带嵌入设置在排水缝隙的背水面,可排水止水带沿排水缝隙环向布设,可排水止水带的两端延伸至隧道边沟内；横向排水管的两端分别与排水缝隙的两端连通,中央排水管与横向横向排水管连通；本发明在排水区段中地下渗水通过排水缝隙排出,降低了隧道二次衬砌的水压力,提高了防水区段的防水能力；通过可排水止水带将地下渗水限制在排水缝隙内,避免了地下渗水的窜流或进入隧道内部；本发明能够对排水缝隙中的沉积物及时方便清除；可排水止水带外贴设置隧道衬砌表面,便于检修及更换。(The invention discloses a kind of tunnel waterproof and water drainage system, including draining gap, draining gap is arranged between the preceding construction lining cutting Duan Yuhou construction lining cutting section of Tunnel Second Lining, and draining gap is arranged circumferentially along tunnel arch face；Can drainage water stop insertion the back side in draining gap is set, can drainage water stop laid along draining gap circumferential direction, can the both ends of drainage water stop extend in tunnel side ditch；The both ends of transverse drain are connected to the both ends in draining gap respectively, and central drain is connected to lateral transverse drain；Present invention seepage in underground in draining section is discharged by draining gap, is reduced the water pressure of Tunnel Second Lining, is improved the waterproof ability of waterproof section；By can drainage water stop by seepage in underground be limited in draining gap in, avoid seepage in underground channelling or enter tunnel internal；The present invention can facilitate in time removing to the deposit in draining gap；It can drainage water stop outer patch setting tunnel-liner surface, easy access and replacement.)

1. a kind of tunnel waterproof and water drainage system, which is characterized in that including draining gap (1), can drainage water stop (2), transverse drainage (3) and central drain (4) are managed, preceding construction lining cutting (8) and rear construction lining in Tunnel Second Lining is arranged in draining gap (1) It builds between section (9), Tunnel Second Lining is divided by waterproof section and draining section by draining gap (1)；It drains gap (1) Along tunnel, arch face is arranged circumferentially；Can drainage water stop (2) insertion setting draining gap (1) back side, can drainage water stop (2) lay along draining gap (1) is circumferential, can the both ends of drainage water stop (2) extend in the gutter of tunnel two sides；Transverse drain (3) be horizontally installed in tunnel inverted arch (11), the both ends of transverse drain (3) respectively with tunnel two sides gutter；Central drain (4) it is arranged along length of tunnel direction, central drain (4) is connected to transverse drain (3).

2. a kind of tunnel waterproof and water drainage system according to claim 1, which is characterized in that be respectively set in the gutter of tunnel two sides Have catchment tray (5), the top of catchment tray (5) is connected to draining gap (1)；The bottom and transverse drain (3) of catchment tray (5) are even It is logical.

3. a kind of tunnel waterproof and water drainage system according to claim 1, which is characterized in that transverse drain (3) uses arc The minimum point of drainpipe, arc drainpipe is arranged on the center line of tunnel floor, and central drain (4) is placed in transverse drain (3) at minimum point, it is arranged on central drain (4) length direction and is obliquely installed, inclined direction and tunnel floor longitudinal slope direction It is adapted.

4. a kind of tunnel waterproof and water drainage system according to claim 1, which is characterized in that draining gap (1) is that tunnel is secondary Construction joint, subsiding crack or the deformation joint of lining cutting.

5. a kind of tunnel waterproof and water drainage system according to claim 1, which is characterized in that on the upstream face of Tunnel Second Lining It is disposed with splash guard (6) and geotextiles (7)；Splash guard (6) subsection setup at draining gap (1), drains gap (1) two Two pieces of splash guards (6) of side are protruded into draining gap (1), and are bonded respectively with the gap wall of the two sides of draining gap (1), two Block splash guard is reserved with drainage channel between (6)；The upstream face in splash guard (6) is arranged in geotextiles (7), and is close to preliminary bracing (12) it is arranged.

6. a kind of tunnel waterproof and water drainage system according to claim 1, which is characterized in that can drainage water stop (2) include row Water box (21) and rhone (22), drainage box (21) are fixed at the back side of draining gap (1), and drainage box (21) is spill Slot structure；The concave surface of drainage box (21) is upstream face, and rhone (22) is fixed on the upstream face of drainage box (21)；Draining One end of slot (22) is fixedly connected with drainage box (21), in the other end and insertion draining gap (1), two sides of rhone (22) Two sides gap wall of the wall respectively with draining gap (1) fits closely.

7. a kind of tunnel waterproof and water drainage system according to claim 6, which is characterized in that the section of rhone (22) is semicircle Arc or V-structure；Wherein, the bottom arc surface of semicircular arc structure is fixedly connected with drainage box (21), semicircular arc structure Two side walls respectively with draining gap (1) two sides gap wall fit closely；The bottom and drainage box (21) of V-structure are fixed Connection, two sides gap wall of the two side walls end of V-structure respectively with draining gap (1) fit closely.

8. a kind of tunnel waterproof and water drainage system according to claim 6, which is characterized in that the two side walls end of rhone (22) End is respectively arranged with clamping section (23), and clamping section (23) is fitted closely with draining gap (1)；Two clamping section (23) between away from From the slit width for being greater than draining gap (1)；It is clamped section (23) and uses wedge structure, be clamped the connecting pin of section (23) and rhone (22) For big end, the free end for being clamped section (23) is small end.

9. a kind of tunnel waterproof and water drainage system according to claim 6, which is characterized in that the two side walls of drainage box (21) point It is not provided with flange plate (24)；Wherein, a flange plate (24) is fixedly connected with preceding construction lining cutting section (8), another flange plate (24) it is fixedly connected with rear construction lining cutting section (9).

10. a kind of tunnel waterproof and water drainage system according to claim 9, which is characterized in that preceding construction lining cutting section (8) and after apply Work lining cutting section (9) surface is provided with mounting groove, and flange plate (24) is embedded in mounting groove；And pass through bolt (25) for flange plate (24) it is fixedly connected with mounting groove；Seal (26) are provided in mounting groove, for flange plate (24) to be sealingly disposed in installation In slot；Seal (26) is chemical seal glue, and chemical seal glue uses acrylic sealant or polysulfide sealant.

Technical field

The present invention relates to tunnel water handling technical field, in particular to a kind of tunnel waterproof and water drainage system.

Background technique

As communications and transportation road network scale constantly expands, the quantity of Tunnel Engineering also constantly increases therewith；Tunneling in Under earth's surface, among the encirclement in various underground water, and underground water is all-pervasive；It tunnel reconnaissance, design, construction and runed Each link work is likely to there is a situation where not in place in journey, so that any defect of tunnel water handling system is caused, It can cause the percolating water in tunnel.Although present China has the ability and experience for building the underground engineerings such as major long tunnel, however, from From the point of view of underground structure waterproof, although design is considered that total waterproof effect is less desirable.Up to the present, All there is liner structure percolating water in most tunnels that the country has been open to traffic, some treatment technology for tunnel seepage aqueous conditions are suitable Seriously, so percolating water is at one of the Common Diseases problem during vcehicular tunnel operation.

Currently, tunnel drainage is main are as follows: water enters the circle draining french drain of lining cutting behind, ring direction drainpipe from wall-rock crack Under connect the longitudinal drainage pipe that lining side wall lower part is set, then water in longitudinal drainage pipe imports center by lateral aqueduct Water is discharged outside hole for drainpipe, last centre drain.There are many problems for drainage system used in current tunnel: firstly, Waterproof and water drainage system, which will appear different degrees of leakage problem using several Nian Houjun, to be shown to the investigation of operation tunnel, is made Tunnel structure generates deterioration, influences the long-term safety in tunnel；Second, may be mingled in Tunnel Water Leakage with it is corrosive at Point, long term can cause to seriously endanger in Tunnel Second Lining to its intensity, to influence the normal use longevity of tunnel structure Life；In addition, Tunnel Water Leakage also will affect the traffic safety in tunnel, for example surface gathered water or icing can all make wheel and ground Between coefficient of friction reduce, vehicle may be made to break away, automobile travels in such tunnel not only influences running speed, Serious security risk can also be generated.The percolating water in tunnel can also can also shine the ventilation equipment in tunnel, communication apparatus, power supply Bright equipment, fire line equipment etc. cause certain erosion, eventually cause operating facilities and break down or even damage；With regard to current Tunnel waterproof and water drainage system construction technology, if leakage problem occurs in tunnel waterproof and water drainage system, it will be difficult to Tunnel Water Leakage Place carries out block clearing, or replacement guarded drainage component, cannot achieve the waterproof and water drainage system of " can tie up reachable ", and then increase tunnel The difficulty and maintenance cost of maintenance during operation.

Summary of the invention

For the technical problems in the prior art, the purpose of the present invention is to provide a kind of tunnel waterproof and water drainage system, It solves existing tunnel waterproof and water drainage system internal drainage pipe easily to block, is not easy to the problem of checking or replacing；Guarded drainage effect Good, service life is longer.

To reach realization above-mentioned purpose, the present invention adopts the following technical scheme:

The present invention provides a kind of tunnel waterproof and water drainage system, including draining gap, can drainage water stop, transverse drain and Central drain, draining gap are arranged between the preceding construction lining cutting in Tunnel Second Lining and rear construction lining cutting section, pass through row Tunnel Second Lining is divided into waterproof section and draining section by water gap；Draining gap is arranged circumferentially along tunnel arch face；It can arrange Water waterstop insertion be arranged in draining gap back side, can drainage water stop along draining gap circumferential direction lay, sealing can be drained The both ends of band extend in the gutter of tunnel two sides；Transverse drain is horizontally installed in tunnel inverted arch, the both ends of transverse drain Respectively with tunnel two sides gutter；Central drain is arranged along length of tunnel direction, and central drain is connected to transverse drain.

Further, catchment tray, the top of catchment tray and draining gap area are respectively arranged in the gutter of tunnel two sides；It converges The bottom of sink is connected to transverse drain.

Further, transverse drain uses arc drainpipe, and tunnel floor is arranged in the minimum point of arc drainpipe On center line, central drain is placed at the minimum point of transverse drain, and setting is obliquely installed on central drain length direction, Inclined direction and tunnel floor longitudinal slope direction are adapted.

Further, draining gap is construction joint, subsiding crack or the deformation joint of Tunnel Second Lining.

Further, splash guard and geotextiles are disposed on the upstream face of Tunnel Second Lining；Splash guard is draining Subsection setup at gap, two pieces of splash guards of draining gap two sides protrude into draining gap, and two with draining gap respectively The gap wall of side is bonded, and is reserved with drainage channel between two pieces of splash guards；The upstream face of splash guard is arranged in geotextiles, and is close to Preliminary bracing setting.

Further, can drainage water stop include drainage box and rhone, drainage box is fixed at the back in draining gap The water surface, drainage box are female groove structures；The concave surface of drainage box is upstream face, and rhone is fixed at the upstream face of drainage box On；One end of rhone is fixedly connected with drainage box, the other end and insertion draining gap in, the two side walls of rhone respectively with The two sides gap wall in draining gap fits closely.

Further, the section of rhone is semicircular arc or V-structure；Wherein, the bottom circular arc of semicircular arc structure Face is fixedly connected with drainage box, and two sides gap wall of the two side walls of semicircular arc structure respectively with draining gap fits closely；V The bottom of type structure is fixedly connected with drainage box, and the two side walls end of V-structure is tight with the two sides gap wall in draining gap respectively Closely connected conjunction.

Further, the two side walls end of rhone is respectively arranged with clamping section, clamping section and draining slots close patch It closes；The distance between two clamping sections are greater than the slit width in draining gap；It is clamped section and uses wedge structure, be clamped section and rhone Connecting pin is big end, and the free end for being clamped section is small end.

Further, the two side walls of drainage box are respectively arranged with flange plate；Wherein, a flange plate and preceding construction lining cutting Section is fixedly connected, another flange plate is fixedly connected with rear construction lining cutting section.

Further, preceding construction lining cutting section and rear construction lining cutting section surface are provided with mounting groove, flange plate insertion installation In slot；And flange plate is fixedly connected with mounting groove by bolt；Seal is provided in mounting groove, for sealing flange plate It is arranged in mounting groove；Seal is chemical seal glue, and chemical seal glue uses acrylic sealant or polysulfide sealant.

Compared with the prior art, the beneficial effects of the present invention are as follows:

The present invention provides a kind of tunnel waterproof and water drainage systems, are applied with after by the preceding construction lining cutting in Tunnel Second Lining Setting draining gap between work lining cutting section, is divided into draining section and waterproof section for Tunnel Second Lining, in draining section Seepage in underground reduces the water pressure of Tunnel Second Lining, improves the waterproof ability of waterproof section by the discharge of draining gap； By setting can drainage water stop, realize by seepage in underground be limited in draining gap in, avoid seepage in underground channelling or Into tunnel internal, tunnel normal use is influenced；The present invention can facilitate in time removing to the deposit in draining gap, avoid The blocking of tunnel drainage system；Guarded drainage effect is good, and service life is longer；It can drainage water stop outer patch setting tunnel-liner table Face, easy access and replacement.

Further, by the way that catchment tray is arranged in the gutter of tunnel two sides, sealing can be drained to tunnel vault by realizing Band collect after seepage in underground and tunnel waist is collected through the seepage in underground of draining gap outflow, it is ensured that at draining section Tunnel is discharged after the collecting completely of seepage in underground.

Further, transverse drain uses arc drainpipe, is arranged between the inlet and outlet of transverse drain Height difference, it is ensured that can be smoothly discharged by transverse drain through seepage in underground, avoid seepage in underground and flow backward to tunnel.

Further, draining gap be construction joint, subsiding crack or deformation joint, it is easy for construction, be not take up construction period, construct It is at low cost.

Further, by the way that geotextiles are arranged, the filtering to tunnel surrounding infiltration is realized, impurity is avoided and enters draining In gap, blocking draining gap；By subsection setup splash guard, in waterproof section, splash guard is completely laid with, and plays waterproof Effect, limit the discharge of water；Drainage channel is formed between draining section, splash guard, realizes the limited drainage to water, Guarantee tunnel waterproof and water drainage system integrality and airtightness just, while meeting waterproof and drainage requirement.

Further, by the way that rhone to be embedded in draining gap, collected by rhone from the outflow of draining gap Seepage in underground, and the underground water collected is discharged into transverse drain, then flow into central drain, until discharge tunnel；Drainage box As the barrier of secondary guarded drainage, when, there are when a small amount of percolating water, percolating water passes through rhone between rhone and draining gap Gap between draining gap enters in drainage box, collects, and discharge it using drainage box is secondary to percolating water, avoids Percolating water immerses in tunnel.

Further, by setting semicircular arc structure or V-structure for rhone, it is ensured that can drainage water stop with The sealed connection for draining gap avoids the channelling of seepage in underground in draining section.

Further, section is clamped by setting, improves leakproofness between rhone and draining gap, it is ensured that pass through row The seepage in underground flowed out in water gap, all collects in rhone, and then seepage in underground is discharged；Wedge is set by clamping section Shape structure is improved and is smoothly connected between clamping section and draining gap, it is ensured that underground water collects.

Further, by the way that flange plate is arranged, the sealing of drainage box and lining cutting is improved, seepage in underground is avoided and enters tunnel In road.

Further, the sealing by using seal to flange plate, realize to can drainage water stop secondary seal； When being sealed using chemical seal glue, good seal performance；Need repairing replace when, it is only necessary to using mechanically or chemically After cutting, remove bolt, can be realized to can drainage water stop dismounting, maintenance substitute mode it is simple.

Detailed description of the invention

Fig. 1 is a kind of tunnel waterproof and water drainage system overall structure diagram of the present invention；

Fig. 2 is a kind of local section schematic diagram of tunnel waterproof and water drainage system of the present invention；

Fig. 3 be in a kind of tunnel waterproof and water drainage system of the present invention can drainage water stop overall structure diagram；

Fig. 4 be in a kind of tunnel waterproof and water drainage system of the present invention can drainage water stop schematic cross-sectional view；

Fig. 5 be in a kind of tunnel waterproof and water drainage system of the present invention can drainage water stop mounting structure schematic diagram；

Fig. 6 is the catchment tray structure enlargement diagram in a kind of tunnel waterproof and water drainage system of the present invention.

Wherein, 1 draining gap, 2 can drainage water stop, 3 transverse drains, 4 central drains, 5 catchment tray, 6 splash guards, 7 geotextiles, lining cutting section of constructing before 8, lining cutting section of constructing after 9,10 tunnel surroundings, 11 tunnel inverted arch, 12 preliminary bracings；21 drainings Box, 22 rhones, 23 clamping sections, 24 flange plates, 25 bolts, 26 seals.

Specific embodiment

The technical solution of the embodiment of the present invention is explained and illustrated below with reference to the attached drawing of the embodiment of the present invention, but under It states embodiment to be merely a preferred embodiment of the present invention, and not all.Based on the implementation example in the implementation mode, those skilled in the art Obtained other embodiments without making creative work, belong to protection scope of the present invention.

As shown in attached drawing 1-2,6, the present invention provides a kind of tunnel waterproof and water drainage systems, including drain gap 1, can drain only Water band 2, transverse drain 3, central drain 4, catchment tray 5, splash guard 6 and geotextiles 7；Gap 1 is drained to be arranged in tunnel two Between preceding construction lining cutting section 8 and rear construction lining cutting section 9 in secondary lining cutting, Tunnel Second Lining is divided by draining gap 1 Waterproof section and draining section, draining gap 1 are arranged circumferentially along tunnel arch face；Can drainage water stop 2 insertion setting draining stitch The back side of gap 1, can drainage water stop 2 lay along draining gap 1 is circumferential；Can the both ends of drainage water stop 2 extend to tunnel two In the ditch of side, catchment tray 5 is respectively arranged in the gutter of tunnel two sides, the top of catchment tray 5 is connected to draining gap 1；Laterally row Water pipe 3 is horizontally installed in tunnel inverted arch 11, and the position of transverse drain 3 and the position in draining gap 1 are adapted；Transverse drainage Pipe 3 uses arc drainpipe, and the minimum point of arc drainpipe is arranged on the center line of tunnel floor, the both ends of arc drainpipe It is connected to respectively with the catchment tray 5 of two sides；Central drain 4 is arranged along length of tunnel direction, and is placed in the minimum of transverse drain 3 At point, central drain 4 is connected to transverse drain 3；After infiltration in tunnel surrounding 10 flows into draining gap 1, it can be drained It after the collecting of waterstop 2, is discharged into catchment tray 5, then flows into central drain 4 through transverse drain 3 and be discharged outside tunnel；Center It is arranged on 4 length direction of drainpipe and is obliquely installed, the tilt angle and the tunnel floor gradient of central drain 4 is adapted, and are convenient for Water is discharged outside tunnel by central drain 4.

Construction joint, subsiding crack or the deformation joint that gap 1 is Tunnel Second Lining are drained, has the position in draining gap 1 to be formed Section is drained, the position in no draining gap 1 is waterproof section, is disposed with splash guard 6 on the upstream face of Tunnel Second Lining And geotextiles 7；When splash guard 6 is arranged, laid according to each guarded drainage partition length sectional；In waterproof section, splash guard Normal lapped layup is carried out according to specification；In draining section, the subsection setup at draining gap 1 of splash guard 6 drains 1 liang of gap Two pieces of splash guards 6 of side protrude into draining gap 1, and the splash guard 6 in adjacent two sections of constructions lining cutting section is fitted in draining respectively On the two sides gap wall in gap 1, and it is reserved with drainage channel between two pieces of splash guards 6, convenient for tunnel surrounding infiltration through soil Work cloth forms guarded drainage subregion into drainage channel；Geotextiles 7 are close to preliminary bracing 12 and are arranged, by the way that geotextiles 7 are arranged, The filtering to tunnel surrounding infiltration is realized, impurity is avoided and enters in draining gap 1, blocking draining gap 1.

As shown in figures 3-5, it is heretofore described can drainage water stop 2, including drainage box 21, rhone 22, clamping Section 23, flange plate 24, bolt 25 and seal 26；The back side in draining gap 1 is arranged in drainage box 21, and drainage box 21 is concave Slot structure, the concave surface of drainage box 21 are upstream face；Rhone 22 is fixed on the upstream face of drainage box 21, rhone 22 One end is fixedly connected with drainage box 21, in the other end insertion draining gap 1 of rhone 22；The section of rhone 22 is semi arch Shape structure or V-structure；When using semicircular arc structure, the bottom arc surface and drainage box 21 of semicircular arc structure are fixed to be connected It connects, gap wall of the two end side walls of semicircular arc structure respectively with draining gap 1 fits closely, and by 6 row of being placed in of splash guard Between sink 21 and draining gap 1；The two side walls end of semicircular arc structure is respectively arranged with clamping section 23, two clamping sections The 23 gap wall respectively with draining gap 1 fits closely, and splash guard 6 is fixedly clamped on can drainage water stop 2 and tunnel two Between secondary lining cutting；Clamping section 23 is wedge structure, and the connecting pin for being clamped section 23 and rhone 22 is big end, clamping section 23 from By holding as small end, the gap wall for realizing draining gap 1 is smoothly connect with rhone 22；Two clamping sections 23 are far from semicircular arc The center of circle of structure is obliquely installed, and two clamping the distance between sections 23 are greater than the slit width in draining gap 1, ensure that rhone 21 with Drain the leakproofness between gap 1.When using V-structure, the bottom of V-structure is fixedly connected with drainage box 21, V-structure Two side walls respectively with draining gap 1 two sides gap wall fit closely；Between the end of the two side walls of V-structure away from From the slit width for being greater than draining gap 1, it is ensured that the leakproofness between rhone 22 and draining gap 1.

The two side walls of drainage box 21 are respectively arranged with flange plate 24, one of flange plate 24 and preceding construction lining cutting section 8 It is fixedly connected, another flange plate 24 is fixedly connected with rear construction lining cutting section 9；Preceding construction lining cutting section 8 and rear construction 9 table of lining cutting section Face is provided with mounting groove；Flange plate 24 is embedded in mounting groove, and is fixedly connected by bolt 25 with mounting groove；It is set in mounting groove It sets seal 26 to be sealed, realizes the sealed connection between flange plate 24 and mounting groove；Seal 26 is chemical seal glue, the wing It after listrium 24 is installed, is cast in mounting groove using by chemical seal glue, it is ensured that between flange plate 24 and mounting groove Be tightly connected, realize to can the secondary seal of drainage water stop fix；Chemical seal glue is using acrylic sealant or gathers Sulphur sealant.

Drainage box 21, rhone 22, clamping section 23 and flange plate 24 are all made of rubber production, rhone 22 and clamping section 23 It is inside provided with steel wire, improve rhone 22 and is clamped the rigidity of section 23, it is ensured that rhone 22 and clamping section 23 and draining Sealed connection between gap 1.Preferably, drainage box 21, rhone 22, clamping section 23 and flange plate 24 use integral type knot Structure.

Arrangement and method for construction and guarded drainage principle

A kind of construction method of tunnel side's drainage system of the present invention, comprising the following steps:

Step 1, formwork erection, two lining trolley of assembly simultaneously pour Tunnel Second Lining；The construction lining cutting section before a draining section It pours to last die bush when building, in two lining trolleys inside the side in draining gap 1 to be onstructed, distance draining gap 1 End 1-2cm at installation fix a circumferential steel bar or rubber strip, the section of circumferential steel bar or rubber strip be side length 1cm just It is rectangular, after the completion of preceding construction lining cutting section pours, circumferential steel bar or rubber strip are removed, is formed on the back side of preceding construction lining cutting section Mounting groove；

Step 2, after the completion of preceding construction lining cutting section maintenance work, the splash guard 6 of construction lining cutting section side, and makes before bending It is bonded with the lining wall of preceding construction lining cutting section；

Step 3 repeats steps 1 and 2, lining cutting section of constructing after pouring；Specifically, being applied after before the construction of rear construction lining cutting section The draining gap that 2cm is reserved between work lining cutting Duan Yuqian construction lining cutting section, in the end face bending and step 2 of rear construction lining cutting section The splash guard of middle equal length, and splash guard is bonded with the lining wall of rear construction lining cutting section, it is reserved between two splash guards Drainage channel；Before the first die bush of rear construction lining cutting section is built, equally in two lining trolleys inside the side in draining gap, away from It is installed at end 1-2cm from draining gap 1 and fixes a circumferential steel bar or rubber strip, the section of circumferential steel bar or rubber strip is The square of side length 1cm after the completion of preceding construction lining cutting section pours, removes circumferential steel bar or rubber strip, in rear construction lining cutting section Mounting groove is formed on back side；

Step 4, forward and backward construction lining cutting section maintenance after the completion of, start installation can drainage water stop；Specifically, first will Can drainage water stop clamping section firmly to centre squeeze, make two clamping sections spacing be less than draining gap slit width；Then Will clamping section insertion draining gap in, enforce can drainage water stop, make be clamped section with draining gap gap wall paste closely It closes, and splash guard is fixedly clamped on can be between drainage water stop and secondary lining；Continue to enforce can drainage water stop, make Flange plate is embedded in mounting groove, is fixedly connected with flange plate with mounting groove by bolt, realize to it is whole can drainage water stop Pre-fix, finally fill up sealing to mounting groove using chemical seal glue, realization to can drainage water stop secondary seal It is fixed.

In use, when underground water is by gap penetration in tunnel surrounding to geotextiles, by geotextiles filtration, filtering Fall impurity therein, splash guard is imported by splash guard compared with clear water and drain the drainage channel that gap is formed, then passes through Rhone collects effect, flows into catchment tray, enters in central drain by transverse drain, finally along drainage channel Export tunnel.

It is heretofore described can drainage water stop need repairing replace when, by way of chemically or physically cutting, Remove seal, then remove bolt, finally, can drainage water stop from draining gap in extract；After the completion of reparation to be checked, By it is after reparation or new can drainage water stop be reinstalled in draining gap, just realize to can drainage water stop maintenance Replacement, maintenance substitute mode is simple, easy to operate.

A kind of tunnel waterproof and water drainage system of the present invention, the normal lapped layup of geotextiles in construction, using geotextiles It filters out the impurity in underground water, guarantees to flow into and drainage water stop and can import by circle draining gap position compared with clear water Transverse drain in tunnel, then central drain is flowed by transverse drain, finally underground water is exported outside tunnel.

In a kind of tunnel waterproof and water drainage system of the present invention, splash guard is no longer an entirety, and splash guard is stitched in draining The end of gap, draining Board position are folded in draining gap, post and fix it with lining wall, make to reserve among two pieces of splash guards Drainage channel.The length that splash guard is folded to construction joint should be more slightly larger than the thickness of Tunnel Second Lining, in order to the fixation of splash guard, And with outer water discharge member combine it is integral, guarantee the airtightness of entire waterproof and water drainage system.

In a kind of tunnel waterproof and water drainage system of the present invention, can drainage water stop use a kind of outer draining with flange plate Rubber strip.The rubber strip water discharging part is in semicircular arc or V-structure, and the clamping section of water discharging part is omited than draining the slit width in gap Width, can drainage water stop clamping section and rhone inside be equipped with metallic steel silk screen, increase the tension of its own, it be installed When be bonded with splash guard it is more preferable.Can the drainage box in drainage water stop can be realized secondary guarded drainage, the wing of drainage box Listrium ensure can drainage water stop be fixedly connected

A kind of tunnel waterproof and water drainage system of the present invention passes through water pressure, water percolating capacity and the tunnel to Tunnel Second Lining Road Grades of Surrounding Rock, and the control standard of water pressure and water percolating capacity and the design objective parameter in tunnel are combined, determine the anti-of tunnel Disposal precinct length drains gap by setting, and Tunnel Second Lining is divided to the waterproof section and draining section of different length, In waterproof section based on waterproof, the discharge of water is limited；In draining section, seepage in underground realizes limit by the discharge of draining gap Amount discharge, water conservation ecological environment, reduces soil erosion to the greatest extent to the maximum extent, to accomplish displacement and water percolating capacity Matching, resource is rationally utilized when building, reduces construction cost.In the present invention can drainage water stop can be convenient for changing, can The pumping equipment of each section of active maintenance removes draining deposit convenient for the later period, solves treatment technology for tunnel seepage water problems during operation The big problem of difficulty, to realize " can tie up reachable " of tunnel waterproof and water drainage system.The present invention has the percolating water phenomenon in tunnel The integrally-built safety in tunnel and durability can be improved in great improvement result, and the driving peace that can be greatly improved in tunnel Full performance reduces the limitation because of percolating water to running speed.The present invention, which has, saves construction investment and operation investment, has obvious Practical value, economic and social profit is significant.Guarded drainage system of the invention use limited drainage mode, waterproof section to prevent The discharge that water is limited based on water drains section based on limited drainage, reduces harm of the underground water to tunnel-liner, moreover it is possible to the greatest extent Amount reduces soil erosion, guarantees the ecological environment damage in tunnel perimeter region.

A kind of tunnel waterproof and water drainage system of the present invention is based on subregion guarded drainage theory, in applying for Tunnel Second Lining At work seam, deformation joint or subsiding crack setting can drainage water stop, can drainage water stop have the characteristics that damaged aging is replaceable, and Eliminate the longitudinal drainage pipe in existing drainage system, instead of at present on splash guard install waterstop partitioned mode, Solve the problems, such as that waterproof and water drainage system internal drainage blockage is not easy to check or replace.