CN106640189A - Pressure bearing tunnel bottom structure drainage system and construction method thereof - Google Patents
Pressure bearing tunnel bottom structure drainage system and construction method thereof Download PDFInfo
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- CN106640189A CN106640189A CN201710097834.2A CN201710097834A CN106640189A CN 106640189 A CN106640189 A CN 106640189A CN 201710097834 A CN201710097834 A CN 201710097834A CN 106640189 A CN106640189 A CN 106640189A
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- pressure
- bearing
- tunnel
- tunnel bottom
- drainage
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
- E21F16/02—Drainage of tunnels
Abstract
The invention relates to a pressure bearing tunnel bottom structure drainage system and a construction method thereof. A central drain is arranged in the tunnel, each of the two sides of the tunnel is provided with a drainage side ditch, a pressure bearing permeable material is embedded in a transverse drain passage that forms the drainage side ditch and the central drain in the concrete, and a vertical drain passage is buried under the central drain; fabric or rope is chosen as the pressure bearing permeable material. According to the construction method of the pressure bearing tunnel bottom structure drainage system, a pressure bearing permeable material is embedded in the side ditch of the tunnel bottom and the central drain, the central drain and the tunnel bottom, the water in the side ditch can be guided to the central drain smoothly, underground water is guided and discharged to the central drain, the pressure at the tunnel bottom is reduced effectively, the damage of the tunnel structure caused by the pressure at the tunnel bottom is reduced.
Description
Technical field
The present invention relates to tunnel drainage facility technology field, more particularly to it is a kind of can pressure-bearing tunnel bottom structure drainage body
System and its construction method.
Background technology
With China's traffic infrastructure Large scale construction, all kinds of diseases and risk that highway, railway tunnel construction face
Emerge in an endless stream.At present design tunnel bottom structure is generally band inverted arch (or base plate) structure, and underground water discharge path is：Country rock →
Preliminary bracing → draining blind pipe → lateral sulcus → transverse drain → center gutter；I.e. the water of tunnel structure periphery is by the initial stage
Shield infiltration is final to discharge outside hole via the center gutter in draining blind pipe ejectment to tunnel structure body.
Traditional drainage system is that underground water is discharged in tunnel body, referred to as by Central drain within tunnel structure
Draining in tunnel body.External draining is that the Central drain of tunnel bottom structure is placed in outside base arrangement, and underground water is in tunnel
External discharge.That what is adopted when internal draining or external its lateral sulcus water ejectment of draining are to center gutter is all φ 100mm
PVC drain pipe.
As shown in figure 1, underground water penetrates into circle draining blind pipe (sequence number 2), circle draining by preliminary bracing (sequence number 1)
Blind pipe (sequence number 2) along longitudinal direction every 10m along hole chow ring to laying, its lower end is connected with longitudinal drainage blind pipe (sequence number 8), longitudinally row
Water blind pipe (sequence number 8) leaves a delivery port every 10-20m, by transverse drainage blind pipe (sequence number 5) and draining lateral sulcus (sequence number 6)
Connection, lateral sulcus (sequence number 6) is mainly used in collecting underground water and underground water is introduced into Central Drainage by PVC drain pipe (sequence number 26)
Ditch (sequence number 7), most at last underground water discharge tunnel is external.It has the disadvantage that pvc pipe is thermally-stabilised poor, when tunnel bottom is poured because
Construction loads and the generation heat of hydration cause pvc pipe to deform；Pvc pipe flexibility is poor, under construction loads and thermal stress effect
Easily ftracture.
Additionally, traditional drainage system, tunnel bottom (abbreviation tunnel bottom) mainly includes：Bottom country rock, inverted arch preliminary bracing,
Inverted arch concrete two is served as a contrast, inverted arch filling, pavement structure, trackside gutter, Deeply buried ditch, kerbstone, cable trough etc..Have due to lacking
The tunnel bottom drainage system of effect, internal draining cannot discharge in tunnel bottom water, cause the ponding below tunnel inverted arch cannot
Effectively ejectment so that inverted arch bears part hydraulic pressure, so as to cause the water damage events such as inverted arch protuberance, railway roadbed deformation, lining cracking, dimension
Repair and renovate reason extremely difficult.
The content of the invention
The present invention is intended to provide it is a kind of can pressure-bearing tunnel bottom structure drainage system and its construction method, central trench with
Arrange between lateral sulcus can pressure-bearing seepy material, can pressure-bearing seepy material there is " water crosses sand only " characteristic and formwork erection skeletal support to make
With, can smoothly by lateral sulcus water ejectment to Central drain, water permeability is good, and voltage endurance capability is strong.
To reach above-mentioned purpose, the technical solution used in the present invention is as follows：
It is a kind of can pressure-bearing tunnel bottom structure drainage system, centre drain is provided with tunnel, tunnel both sides respectively set one
Individual draining lateral sulcus, by can pressure-bearing seepy material be embedded in tunnel the transverse drainage that forms connection centre drain and draining lateral sulcus
Passage, the transverse drainage channel spacing is provided with multiple.
Further, it is a kind of can the tunnel bottom structure drainage system of pressure-bearing include inverted arch, it is pre- below centre drain
Bury can pressure-bearing seepy material form vertical drainage passage, the vertical drainage channel spacing is provided with multiple, the centre drain
Bottom interval is provided with multiple water inlets, and the vertical drainage passage end stretches out inverted arch, the vertical drainage passage other end and central authorities
The water inlet connection in gutter, the water inlet is provided with non-return device.
Further, can pressure-bearing tunnel bottom structure drainage system also include arch wall, the arch wall include from outside to inside
The preliminary bracing of setting, waterproof layer and secondary lining, are interval with circle draining blind pipe between the preliminary bracing and waterproof layer,
The two ends of the circle draining blind pipe connect respectively longitudinal drainage blind pipe, are interval with the tube wall of the longitudinal drainage blind pipe many
Individual delivery port, by transverse drainage blind pipe communicated drainage lateral sulcus, the longitudinal drainage blind pipe is higher than Central Drainage to the delivery port
Ditch.
Further, it is described can pressure-bearing seepy material be fabric, the fabric multiple layer is stacked or is rolled into beam.Fabric includes pin
Weave cotton cloth, woven fabric or braid, it is further preferred that the fabric is linen.
Further, it is described can pressure-bearing seepy material be rope.
Further, it is described can pressure-bearing seepy material be fabric or rope.The rope is the rope made of hemp.
Further, it is described can the two ends of pressure-bearing seepy material be provided with bolting steel sleeve pipe end fixing device, it is described
Bolting steel sleeve pipe end fixing device includes sleeve pipe and center fixing bolt, and described sleeve pipe includes upper ring and a lower ring, the upper ring
It is axially arranged with the lateral wing plate of sleeve pipe with lower ring left end and right-hand member, the lateral wing plate of sleeve pipe of the upper ring is lateral with the sleeve pipe of lower ring
Wing plate is detachably connected, the tail end of the upper ring and a lower ring is radially provided with sleeve pipe afterbody wing ring, it is described can pressure-bearing seepy material
End is nested among sleeve pipe and stretches out sleeve pipe afterbody, and the center fixing bolt is radially across sleeve pipe.
Further, the non-return device includes compression spring and the removable cover for covering water inlet, the activity
The side of cover plate and centre drain are rotated and be connecteds, and the removable cover is located at water inlet top, described compression spring one end and
The top board connection of centre drain, the compression spring other end is connected with removable cover.
Further, it is described can pressure-bearing seepy material a diameter of 100mm, two neighboring transverse drainage channel pitch 5m-
50m, two neighboring vertical drainage channel pitch 5m-50m.It is further preferred that two neighboring transverse drainage channel pitch 10m,
Two neighboring circle draining blind pipe spacing 10m, the transverse drainage passage is axially aligned with circle draining blind pipe.
Further, two neighboring vertical drainage channel pitch 10m.
Can pressure-bearing tunnel bottom structure drainage system construction method, comprise the following steps:
After step 1, preliminary bracing gunite concrete curing molding, erect draining lateral sulcus and pour with the concrete of centre drain
Building mould；
Step 2, using as transverse drainage passage can one end of pressure-bearing seepy material be fixed on draining lateral sulcus and pour mould
The madial wall of plate, its other end is fixed on the side wall of centre drain formwork for placing；
Step 3, casting concrete, after concrete curing shaping, it is pre-buried can pressure-bearing seepy material just form laterally row
Aquaporin；
Step 4, in the formwork for placing of centre drain centre drain is poured, poured in the formwork for placing of draining lateral sulcus
Build draining lateral sulcus.
Further, the tunnel includes inverted arch, in the early stage before supporting construction, using holding as vertical drainage passage
One end of pressure seepy material is fixed on tunnel bottom country rock, and then gunite concrete applies preliminary bracing；
After the step 1, using as vertical drainage passage can the other end of pressure-bearing seepy material be fixed on central authorities
The formwork for placing bottom surface central authorities in gutter；
In the step 3, while pouring inverted arch and inverted arch fill concrete, the Structured cured shaping of common casting concrete is treated
Afterwards, pre-buried two can pressure-bearing seepy material form transverse drainage passage and vertical drainage passage respectively.
Compared with prior art, the invention has the advantages that：
1. the present invention tunnel bottom lateral sulcus and central trench arrange can pressure-bearing seepy material, can smoothly by the ejectment of lateral sulcus water extremely
Central drain, water permeability is good, while voltage endurance capability is strong；
2. the present invention central trench and tunnel bottom arrange can pressure-bearing seepy material, smoothly by underground rich water ejectment to center
Ditch, effectively reduces tunnel bottom hydraulic pressure, reduces tunnel bottom hydraulic pressure and tunnel structure is destroyed；The non-return device of setting can be prevented
Lateral sulcus water pours in down a chimney and enters tunnel bottom；
3. the present invention using can pressure-bearing seepy material replace PVC drain pipe of the prior art, permeable, drainage performance is good,
Tunnel drainage amount demand can not only be met, and can prevent drainage channel from blocking；It overcomes many disadvantages of other drainage pipes
End, row, infiltration effect are strong, collect permeable, draining and accomplish without any letup, with the voltage endurance capability and water penetration that meet engineering design requirements.
Its easy construction, non junction, over the ground quality shape is without particular/special requirement, arbitrary can make where the dark draining of any needs
With；
4. after the completion of constructing, it is allowed to material damage and do not consider the materials'use life-span, as tunnel service life increases, tunnel
Road drainage effect is become better and better；
5. select fabric or rope as drainage channel, its overall continuity is good, non junction, easy construction and is once constructed into
Type, is easy to large-scale promotion.
Description of the drawings
Fig. 1 is the structural representation in tunnel drainage system cross section in prior art；
Fig. 2 is the structural representation in cross section of the present invention；
Fig. 3 is the structural representation of vertical section of the present invention；
Fig. 4 is the partial enlarged drawing of the present invention；
Fig. 5 is the stereogram of bolting steel sleeve pipe end fixing device；
Fig. 6 is the assembled fixing means schematic diagram of bolting steel sleeve pipe end fixing device when using；
Fig. 7 is the structural representation without vertical drainage passage during discharging mode；
The structural representation of vertical drainage passage when Fig. 8 is discharging mode；
In figure：1- preliminary bracings, 2- circle draining blind pipes, 3- waterproof layers, 4- secondary linings, 5- transverse drainage blind pipes, 6-
Draining lateral sulcus, 7- centre drains, 8- longitudinal drainage blind pipes, 9- transverse drainage passages, 10- vertical drainage passages, 11- bolting steels
Sleeve pipe end fixing device, 12- casing main body structures, 13- sleeve pipe afterbody wing rings, 14- centers fixing nut, 15- centers are fixed
Bolt, 16- flank fixing nuts, 17- flank fixing bolts, the lateral wing plate of 18- sleeve pipes, 19- can pressure-bearing seepy material, 20- tops
Ring, 26-PVC drainpipes under plate, 21- compression springs, 22- loose-leaf rotating shafts, 23- removable covers, the upper rings of 24-, 25-.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with accompanying drawing, the present invention is entered
Row is further described.
As shown in Figure 2,3, it is disclosed by the invention can pressure-bearing tunnel bottom structure drainage system, central row is provided with tunnel
Ditch 7, tunnel both sides respectively set a draining lateral sulcus 6, can pressure-bearing seepy material 19 be embedded in tunnel formed connection central authorities row
Ditch 7 and the transverse drainage passage 9 of draining lateral sulcus 6, transverse drainage passage 9 is interval with multiple.For the ease of draining, laterally arrange
The transverse slope of aquaporin 9 is 2%.
Can pressure-bearing seepy material 19 be fabric or rope, fabric multiple layer is stacked or is rolled into beam with pressure-bearing.Fabric includes pin
Weave cotton cloth, woven fabric or braid.Rope is bar, can be solid, can be hollow.Rope can be by various sorting techniques.Press
Using kinds of fibers classification, rope can be divided into natural fiber rope and synthetic fiber rope, flat rope, the day rope made of hemp belong to natural fibre
Dimension rope, and Kevlar ropes, Vectran ropes then belong to synthetic fiber rope；Classify by manufacturing process, torsade, kernmantle can be divided into
With parallel cordage；By rope diameter magnitude classification, rope, rope, cable can be divided into.Rope typically has plastic ties, the rope made of hemp, nylon rope, cotton
The species such as rope, straw rope.It is further preferred that the preferred linen of fabric, the preferred rope made of hemp of restricting.
Can pressure-bearing seepy material 19 have advantages below：Comprehensive permeable, water permeability is good；It is pressure and be not required to consider material
Service life；It is not required to consider material corrosion and antimicrobial erosion.Rope has further the advantage that：Overall continuity is good, non junction,
Linking is convenient；Lightweight, construction is simple convenient；Construction molding, is not required to formwork erection.
As shown in Figure 2,3, can pressure-bearing tunnel bottom structure drainage system also include arch wall, arch wall include set from outside to inside
Preliminary bracing 1, waterproof layer 3 and the secondary lining 4 put, is interval with circle draining blind pipe 2 between preliminary bracing 1 and waterproof layer 3,
The two ends of circle draining blind pipe 2 connect respectively longitudinal drainage blind pipe 8, be interval with the tube wall of longitudinal drainage blind pipe 8 it is multiple go out
The mouth of a river, by the communicated drainage lateral sulcus 6 of transverse drainage blind pipe 5, longitudinal drainage blind pipe 8 is higher than centre drain 7 to delivery port.Underground water
The circle draining blind pipe 2 being embedded in secondary lining 4 is penetrated into by preliminary bracing 1, then respectively via longitudinal drainage blind pipe 8
Draining lateral sulcus 6 is entered with transverse drainage blind pipe 5, when inverted arch and inverted arch fill concrete are poured, in advance by diameter of phi=100mm
Can pressure-bearing seepy material 19 is embedded is fixed on precalculated position and carries out formed by integrally casting, bury wherein after casting concrete curing molding
Can such as rope made of hemp of pressure-bearing seepy material 19 form natural transverse drainage passage 9, the water collected in draining lateral sulcus 6 is by horizontal stroke
Centre drain 7 is entered to drainage channel 9, final discharge tunnel is external.
Can pressure-bearing tunnel bottom structure drainage system also include inverted arch, the ejectment of lateral sulcus water is to center draining in conventional method
What is adopted during ditch is all the PVC drain pipe of φ 100mm, and it has the disadvantage that pvc pipe is thermally-stabilised poor, in tunnel bottom inverted arch and filling
When (common) pours because construction loads and produce the heat of hydration cause pvc pipe to deform, pvc pipe flexibility is poor, construction loads with
And the lower easily cracking of thermal stress effect.And, it is that inverted arch lower section cannot be by being embedded in 4 in secondary lining for tunnel bottom
Draining blind pipe system discharges the external underground water in tunnel, and the present invention is further, bury below centre drain 7 can pressure-bearing it is saturating
Water material 19 forms vertical drainage passage 10, can pressure-bearing seepy material 19 be embedded in concrete.Vertical drainage passage 10 is spaced
It is provided with multiple, the bottom interval of centre drain 7 is provided with multiple water inlets, inverted arch is stretched out in the one end of vertical drainage passage 10, vertical row
The other end of aquaporin 10 is connected with the water inlet of centre drain 7.Due to inverted arch top underground water by draining blind pipe system with
And transverse drainage passage finally collects in inflow centre drain 7, to prevent central drain 7 in the underground water that collects by perpendicular
Flow backwards to drainage channel 10 and enter tunnel bottom, set in the delivery port of vertical drainage passage 10 or the water inlet of central drain 7
There is non-return device.
By suitable length can such as rope made of hemp one end of pressure-bearing seepy material 19 be fixed on tunnel bottom country rock, the other end is then
The bottom centre position of centre drain 7 is fixed on, when the gunite concrete of preliminary bracing 1 and inverted arch are poured jointly with inverted arch filling
After concrete curing shaping, can pressure-bearing seepy material 19 formed between centre drain 7 and tunnel bottom underground water vertically
Drainage channel 10, tunnel bottom ponding opens non-return device and enters centre drain 7 under head pressure effect.
Non-return device can be existing check valve, and the present invention discloses the non-return device of another kind of structure, such as Fig. 7,8 institutes
Show, non-return device includes compression spring 21 and the removable cover 23 for covering water inlet, side and the central authorities of removable cover 23
Gutter 7 rotates connection, and removable cover 23 is located at the top board 20 of water inlet top, the one end of compression spring 21 and centre drain 7
Connection, the other end of compression spring 21 is connected with removable cover 23.Removable cover 23 is rotated with centre drain 7 by loose-leaf and connected
Connect.
The present invention designs one piece of rotatable removable cover 23 in the exit of vertical drainage passage 10, and using certain firm
The connection centre drain of compression spring 21 top board 20 and the removable cover 23 of degree.As shown in figure 8, when tunnel bottom inverted arch lower section product
Water hydraulic pressure more than deadweight and the compression spring 21 of removable cover 23 pressure sum when, tunnel bottom ponding is just in head pressure
Under effect, tunnel bottom ponding enters vertical drainage passage 10 under head pressure effect, promotes removable cover 23 to turn around loose-leaf
Axle construction 22 is rotated, and backs down removable cover 23 into centre drain 7, and final discharge tunnel is external；As shown in fig. 7, working as tunnel
Bottom water pressure reduces, ponding hydraulic pressure less than deadweight and the compression spring 21 of removable cover 23 pressure sum when, removable cover
23 close again in the presence of compression spring 21 and cover plate deadweight weight, so that the water in centre drain will not edge
Vertical drainage passage 10 flows backwards and enters inverted arch bottom.
Invention additionally discloses can pressure-bearing tunnel bottom structure drainage system construction method, comprise the following steps:
After step 1, preliminary bracing gunite concrete curing molding, the concrete of draining lateral sulcus 6 and centre drain 7 is erected
Formwork for placing；
Step 2, using as transverse drainage passage 9 can one end of pressure-bearing seepy material 19 be fixed on draining lateral sulcus 6 and pour
The madial wall of building mould, its other end is fixed on the side wall of the formwork for placing of centre drain 7；
Step 3, casting concrete, after concrete curing shaping, it is pre-buried can pressure-bearing seepy material 19 just form horizontal
Drainage channel 9；
Step 4, in the formwork for placing of centre drain 7 centre drain 7 is poured, in the formwork for placing of draining lateral sulcus 6
In pour draining lateral sulcus 6.
When tunnel include inverted arch when, can pressure-bearing tunnel bottom structure drainage system construction method, comprise the following steps:
Before step 1, in the early stage supporting construction, using as vertical drainage passage 10 can pressure-bearing seepy material 19 one end
It is fixed on tunnel bottom country rock, then gunite concrete applies preliminary bracing；
After step 2, preliminary bracing gunite concrete curing molding, the concrete of draining lateral sulcus 6 and centre drain 7 is erected
Formwork for placing；
Step 3, using as vertical drainage passage 10 can the other end of pressure-bearing seepy material 19 be fixed on Central Drainage
The formwork for placing bottom surface central authorities of ditch 7；Using as transverse drainage passage 9 can one end of pressure-bearing seepy material 19 be fixed on draining
The madial wall of the formwork for placing of lateral sulcus 6, its other end is fixed on the side wall of the formwork for placing of centre drain 7；
Step 4, while pour inverted arch and inverted arch fill concrete, after the Structured cured shaping of common casting concrete, in advance
Two for burying can pressure-bearing seepy material form transverse drainage passage 9 and vertical drainage passage 10 respectively；
Step 4, in the formwork for placing of centre drain 7 centre drain 7 is poured, in the formwork for placing of draining lateral sulcus 6
In pour draining lateral sulcus 6.
For the ease of install can pressure-bearing seepy material 19, the present invention can the two ends of pressure-bearing seepy material 19 be provided with spiral shell
Bolt steel sleeve end fixing device 11, as shown in Figure 4,5, 6, bolting steel sleeve pipe end fixing device 11 includes that sleeve pipe and center are solid
Determine bolt 15, sleeve pipe includes upper ring 24 and lower ring 25, and upper ring 24 and the lower left end of ring 25 and right-hand member are axially arranged with sleeve pipe lateral wings
Plate 18, the lateral wing plate 18 of sleeve pipe and the lateral wing plate 18 of the sleeve pipe of lower ring 25 of upper ring 24 are detachably connected, upper ring 24 and lower ring 25
Tail end be radially provided with sleeve pipe afterbody wing ring 13, can the end of pressure-bearing seepy material 19 be nested among sleeve pipe and stretch out sleeve pipe tail
Portion, center fixing bolt 15 is radially across sleeve pipe.
When using, can the pressure-bearing seepy material such as rope made of hemp be nested among sleeve pipe, upper and lower semi-ring is by sleeve pipe both sides
Eight flank fixing nuts 16 on the lateral wing plate of sleeve pipe are fitted fixation with four flank fixing bolts 17.As shown in Figure 6 in figure
Arrow is bulking block assembly direction, by inserting and running through center fixing bolt 15 via the perforate of upper ring 24 and lower ring 25
Can pressure-bearing seepy material 19, Zai Yongliangke centers fixing nut 14 is fixed, so as to realize can pressure-bearing seepy material 19 and set
The fastening of pipe agent structure 12.And cause bolting steel sleeve pipe end fixing device 11 flat with fixed by sleeve pipe afterbody wing ring 13
Between face have bigger contact area, and then enable can pressure-bearing seepy material 19 more stablize lasting consolidating with associated fasteners
Due to precalculated position, ensured vertical drainage passage 10 and transverse drainage passage 9 once accurately pours shaping.
Tunnel bottom structure construction order is in Practical Project：Preliminary bracing gunite concrete → erection template → inverted arch and
Inverted arch fill concrete pours → pours draining lateral sulcus and centre drain.In the early stage before supporting construction, will be used as vertical drainage
Passage 10 can such as rope made of hemp lower end of pressure-bearing seepy material 19 bottom is fixed on by bolting steel sleeve pipe end fixing device 11
On country rock, then gunite concrete applies preliminary bracing 1.
The concreting mould of drain-side ditch 6 and centre drain 7 is erected after preliminary bracing gunite concrete curing molding
Plate.Template erect finish after, can pressure-bearing seepy material upper end central authorities are fixed on by bolting steel sleeve pipe end fixing device 11
The formwork for placing bottom central part position of gutter 7；Using as transverse drainage passage 9 can such as rope made of hemp one of pressure-bearing seepy material 19
End is fixed on the madial wall of the formwork for placing of draining lateral sulcus 6 by bolting steel sleeve pipe end fixing device 11, and the other end is equally used
Bolting steel sleeve pipe end fixing device 11 is fixed on and precalculates being located at for setting according to the transverse drainage gradient 2% of design requirement
On the precalculated position of centre drain formwork for placing side wall.
Wherein, two neighboring spacing 5m-50m of transverse drainage passage 9, two neighboring spacing 5m- of vertical drainage passage 10
50m.It is further preferred that two neighboring spacing 10m of transverse drainage passage 9, two neighboring spacing 10m of vertical drainage passage 10.
As shown in figure 3, the center of two neighboring transverse drainage passage 9 is provided with 1 vertical drainage passage 10.In addition two neighboring ring
To spacing 10m of draining blind pipe 2, transverse drainage passage 9 is axially aligned with circle draining blind pipe 2；The diameter of longitudinal drainage blind pipe 8
100mm, the diameter 50mm of circle draining blind pipe 2.
Using as vertical drainage passage 10 can pressure-bearing seepy material with as transverse drainage passage 9 can pressure-bearing it is saturating
After the completion of water material is pre-buried, then inverted arch and inverted arch filling part concrete are poured simultaneously, treat that common casting concrete is Structured cured
After shaping, it is pre-buried can pressure-bearing seepy material will respectively form transverse drainage passage 9 and vertical drainage passage 10.Now
The related bolting steel sleeve pipe end fixing device 11 of dismounting, the bolting steel sleeve pipe end fixing device 11 for disassembling is wanted as related
Ask keeping, in order to subsequent construction in again assembled fixation use.Can cut off simultaneously can the pressure-bearing seepy material such as rope made of hemp exist
The unnecessary part in fixed termination, be easy to follow-up draining lateral sulcus and centre drain concrete pours work.Finally in advance frame
Pour draining lateral sulcus 6 and centre drain 7 in vertical template respectively.
The present invention is arranged in advance in tunnel bottom lateral sulcus and central trench, central trench and tunnel bottom can pressure-bearing seepy material example
Such as the rope made of hemp.With advantages below：1. can be smoothly by lateral sulcus water ejectment to Central drain；2. smoothly by underground rich water ejectment to center
Ditch, effectively reduces tunnel bottom hydraulic pressure, reduces tunnel bottom hydraulic pressure and tunnel structure is destroyed；3. by arrange compression spring and
Cover plate, can prevent lateral sulcus water from pouring in down a chimney and enter tunnel bottom；4. permeable, drainage performance is good, can meet tunnel drainage amount demand, and
Can prevent drainage channel from blocking；5. after the completion of constructing, it is allowed to material damage and do not consider the materials'use life-span, as tunnel is used
The time limit increases, and tunnel drainage effect is become better and better；6. overall continuity is good, non junction, easy construction and a construction molding, just
In large-scale promotion.
Certainly, the present invention can also have other numerous embodiments, in the case of without departing substantially from spirit of the invention and its essence,
Those of ordinary skill in the art can make various corresponding changes and deformation, but these corresponding changes and change according to the present invention
Shape should all belong to the protection domain of appended claims of the invention.
Claims (10)
1. it is a kind of can pressure-bearing tunnel bottom structure drainage system, centre drain (7) is provided with tunnel, tunnel both sides respectively set one
Individual draining lateral sulcus (6), it is characterised in that:Can pressure-bearing seepy material (19) be embedded in tunnel formed connection centre drain
(7) with the transverse drainage passage (9) of draining lateral sulcus (6), the transverse drainage passage (9) is interval with multiple.
2. it is according to claim 1 can pressure-bearing tunnel bottom structure drainage system, it is characterised in that：Including inverted arch,
Centre drain (7) lower section it is pre-buried can pressure-bearing seepy material (19) formed vertical drainage passage (10), the vertical drainage passage
(10) it is interval with multiple, centre drain (7) bottom interval is provided with multiple water inlets, the vertical drainage passage (10)
Inverted arch is stretched out in one end, and vertical drainage passage (10) other end is connected with the water inlet of centre drain (7), and the water inlet is provided with
Non-return device.
3. it is according to claim 1 and 2 can pressure-bearing tunnel bottom structure drainage system, it is characterised in that：Also include arch
Wall, the arch wall includes preliminary bracing (1), waterproof layer (3) and the secondary lining (4) for arranging from outside to inside, the preliminary bracing
(1) circle draining blind pipe (2) is interval with and waterproof layer (3) between, the two ends of the circle draining blind pipe (2) connect respectively vertical
To draining blind pipe (8), multiple delivery ports are interval with the tube wall of the longitudinal drainage blind pipe (8), the delivery port is by horizontal stroke
To draining blind pipe (5) communicated drainage lateral sulcus (6), the longitudinal drainage blind pipe (8) is higher than centre drain (7).
4. it is according to claim 1 and 2 can pressure-bearing tunnel bottom structure drainage system, it is characterised in that：It is described to hold
Pressure seepy material (19) is fabric, and the fabric multiple layer is stacked or is rolled into beam.
5. it is according to claim 1 and 2 can pressure-bearing tunnel bottom structure drainage system, it is characterised in that：It is described to hold
Pressure seepy material (19) is rope.
6. it is according to claim 1 and 2 can pressure-bearing tunnel bottom structure drainage system, it is characterised in that：It is described to hold
The two ends of pressure seepy material (19) are provided with bolting steel sleeve pipe end fixing device (11), and the bolting steel sleeve pipe termination is fixed
Device (11) includes sleeve pipe and center fixing bolt (15), and described sleeve pipe includes upper ring (24) and lower ring (25), the upper ring
And lower ring (25) left end and right-hand member are axially arranged with the lateral wing plate of sleeve pipe (18), the lateral wing plate of sleeve pipe of the upper ring (24) (24)
(18) it is detachably connected with the lateral wing plate of the sleeve pipe (18) of lower ring (25), the tail end of the upper ring (24) and lower ring (25) radially sets
Have sleeve pipe afterbody wing ring (13), it is described can the end of pressure-bearing seepy material (19) be nested among sleeve pipe and stretch out sleeve pipe afterbody,
The center fixing bolt (15) is radially across sleeve pipe.
7. it is according to claim 2 can pressure-bearing tunnel bottom structure drainage system, it is characterised in that：The non-return device
Removable cover (23) including compression spring (21) and for covering water inlet, side and the central authorities row of the removable cover (23)
Ditch (7) rotates connection, and the removable cover (23) is positioned at water inlet top, described compression spring (21) one end and Central Drainage
Top board (20) connection of ditch (7), compression spring (21) other end is connected with removable cover (23).
8. it is according to claim 2 can pressure-bearing tunnel bottom structure drainage system, it is characterised in that：It is described can pressure-bearing it is saturating
A diameter of 100mm of water material (19), two neighboring transverse drainage passage (9) spacing 5m-50m, two neighboring vertical drainage leads to
Road (10) spacing 5m-50m.
9. the construction method of the tunnel bottom structure drainage system according to any one of claim 1-8 claim, its
It is characterised by：Comprise the following steps:
After step 1, preliminary bracing gunite concrete curing molding, the concrete of draining lateral sulcus (6) and centre drain (7) is erected
Formwork for placing；
Step 2, by as transverse drainage passage (9) can one end of pressure-bearing seepy material (19) be fixed on draining lateral sulcus (6)
The madial wall of formwork for placing, its other end is fixed on the side wall of centre drain (7) formwork for placing；
Step 3, casting concrete, after concrete curing shaping, it is pre-buried can pressure-bearing seepy material (19) just form laterally row
Aquaporin (9)；
Step 4, in the formwork for placing of centre drain (7) centre drain (7) is poured, in draining lateral sulcus (6) mould is poured
Draining lateral sulcus (6) is poured in plate.
10. the construction method of tunnel bottom structure drainage system according to claim 9, it is characterised in that：The tunnel
Including inverted arch, in the early stage before supporting construction, will as vertical drainage passage (10) can pressure-bearing seepy material (19) one end
It is fixed on tunnel bottom country rock, then gunite concrete applies preliminary bracing；
After the step 1, by as vertical drainage passage (10) can the other end of pressure-bearing seepy material (19) be fixed on
The formwork for placing bottom surface central authorities of centre drain (7)；
In the step 3, while inverted arch and inverted arch fill concrete are poured, after the Structured cured shaping of common casting concrete,
Pre-buried two can pressure-bearing seepy material (19) form transverse drainage passage (9) and vertical drainage passage (10) respectively.
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| CN107905812A (en) * | 2017-12-27 | 2018-04-13 | 中铁二院工程集团有限责任公司 | The hollow compound arch tunnel-liner in type tunnel bottom and its drainage system construction of falling from power |
| CN108131162A (en) * | 2018-02-11 | 2018-06-08 | 中铁二院工程集团有限责任公司 | A kind of tunnel drainage device and tunnel solid concrete roabed |
| CN108361064A (en) * | 2018-01-12 | 2018-08-03 | 重庆交通大学 | Tunnel novel water drainage structure based on barometric gradient trigger switch principle |
| CN108590697A (en) * | 2017-12-27 | 2018-09-28 | 中铁二院工程集团有限责任公司 | Box pedestal detaches bearing type liner structure and its drainage system with bridge-type tunnel bottom structure sound |
| CN108729932A (en) * | 2018-05-22 | 2018-11-02 | 中铁二院工程集团有限责任公司 | Tunnel lining structure solid waterproof and water drainage system |
| CN110454222A (en) * | 2019-07-22 | 2019-11-15 | 中铁六局集团有限公司 | Collapsible loess tunnel Central Drainage construction method |
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| CN108131162A (en) * | 2018-02-11 | 2018-06-08 | 中铁二院工程集团有限责任公司 | A kind of tunnel drainage device and tunnel solid concrete roabed |
| CN108729932A (en) * | 2018-05-22 | 2018-11-02 | 中铁二院工程集团有限责任公司 | Tunnel lining structure solid waterproof and water drainage system |
| CN110454222A (en) * | 2019-07-22 | 2019-11-15 | 中铁六局集团有限公司 | Collapsible loess tunnel Central Drainage construction method |
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