CN104179513B - A kind of construction method of tunnel in cold area hole external thermal insulation outlet - Google Patents
A kind of construction method of tunnel in cold area hole external thermal insulation outlet Download PDFInfo
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- CN104179513B CN104179513B CN201410395898.7A CN201410395898A CN104179513B CN 104179513 B CN104179513 B CN 104179513B CN 201410395898 A CN201410395898 A CN 201410395898A CN 104179513 B CN104179513 B CN 104179513B
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- pipe
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Abstract
The present invention relates to Construction Technology field, particularly relate to a kind of tunnel in cold area hole external thermal insulation outlet construction method.nullThe present invention is when tunnel in cold area hole external thermal insulation outlet is constructed，Use the mode of drain pipe outlet layering draining，After first row hose nozzle ground floor freezes，Water level is raised by water by the slabstone water storehouse at rear，Discharged by upper strata second row water pipe again，After the upper strata mouth of pipe freezes，Water itself has certain temperature slowly the first row hose nozzle of bottom will be melted dredging，Water is in the case of constant flow，Will not be frozen to ice，And use such as asbestos at drain pipe outlet、The auxiliary Insulation such as cinder，Water in the range of slope protection not easy freezing，Drain pipe outlet is crop out in the least scope，It is enough to ensure that effluent pipe mouth is the most frozen by the temperature of water self，Below first row water pipe, electric heater unit is set，Once run into extreme climate，Take electrical heat tracing measure，Guarantee the normal drainage effect of outlet.
Description
Technical field
The present invention relates to Construction Technology field, particularly relate to the construction method of a kind of tunnel in cold area hole external thermal insulation outlet.
Background technology
In prior art, tunnel in cold area hole external thermal insulation outlet is the important component part of tunnel drainage, is also to ensure that construction quality
The important measures of " project of vital and lasting importance ", outside hole, the quality of the construction quality of drainage system is directly connected to tunnel internal drainage and to tunnel
Impact after operation, hole internal water accumulation can not be discharged smoothly and will be directly affected the frost heave in tunnel simultaneously, direct relation constructing tunnel quality
And operation security.The common practice of existing tunnel in cold area heat-insulating water outlet design is the mode taking nature to flow out, and requires water outlet
The position of mouthful design should be at leeward area without shade, but heat-insulating water outlet does not takes into full account heating and the thermometric measure of outlet, the most not
Contemplate the mouth of a river to take to fall the method such as slope draining and the insulation material of application auxiliary simultaneously.
Summary of the invention
In order to overcome defect of the prior art, the construction method of a kind of tunnel in cold area hole external thermal insulation outlet that the present invention provides,
First contemplating the mode of mouth of a river layering draining, after drain pipe port ground floor freezes, water passes through the slabstone water storehouse at rear by water
Position is raised, then is discharged by upper strata drain pipe, and after the upper strata mouth of pipe freezes, water body self has certain temperature will be slowly by
The drain pipe port of lower section melts dredging, and water, will not be frozen in the case of constant flow, and various such as in outlet employing
The auxiliary Insulation such as asbestos, cinder, the water in slope protection scope should not freeze, crop out in the least scope of an outlet,
Being enough to ensure that the mouth of pipe is the most frozen by the temperature of water body self, separately the lower section at drain pipe arranges heat tape, once runs into pole
End weather, can take electrically heated Insulation, so that it is guaranteed that the heat insulation effect of outlet.
The present invention is achieved through the following technical solutions: the construction method of a kind of tunnel in cold area hole external thermal insulation outlet, including with
Lower step:
Step 1: determine position, the mouth of a river, excavates outlet foundation trench in described outlet position, and described foundation trench first uses sand
Gravel bed course, then casting concrete；
Step 2: apply outlet headwall, described headwall uses mortar flag stone to apply, buries armored concrete underground in the middle part of described headwall
Pipe culvert is connected as reserved second drain tube holes and buried with outside hole section and causes at described outlet headwall；
Step 3: apply described outlet domatic with the draining of described headwall location, and splayed aileron is set in both sides does gear and protect,
It is domatic, based on the domatic lower section of described slabstone uses mortar flag stone also that described draining domatic lower section backfill ragstone layer forms slabstone
Make barricade, above described slabstone is domatic, first lays one layer of geotextiles re-lays one layer of rock wool and do overcoat；
Step 4: arrange horizontal wall inscription at described domatic barricade water outlet end, described horizontal wall inscription is provided with the gradient, and goes out at described domatic barricade
Mouth of a river end arranges and buries two-layer first row water pipe at horizontal wall inscription underground, and the interlamellar spacing of described first row water pipe and tube pitch are according to a determining deviation cloth
If arranging two electrothermal tubes outside first row water pipe every described, above described electrothermal tube, install temperature transducer, described electric heating
Pipe is arranged in below described first row water pipe both sides closely connected with described first row water pipe, and described electrothermal tube is always domatic along lower section to be prolonged
Extend drainage culvert and stretch out certain distance；
Step 5: in described step 4, described first row water pipe surrounding uses concrete filling fixing, on described first row water pipe
Side lays one layer of geotextiles and re-lays one layer of rock wool, backfills cinder extremely described end wall surface, above described rock wool above described cinder
Applying mortar rubble masonry pavement, described first row water pipe passes described bank protection face, it is ensured that water can flow naturally from described first row water pipe
Going out, described first row water pipe water outlet is provided with weathering；
Step 6: apply bituminous coating on described mortar rubble masonry pavement surface.
Further, the Base with Sand Gravel Cushion in described step 1 is 15cm, and described concreting thickness is 10cm, and model is C15.
Further, second row water pipe external diameter described in described step 2 is φ 40cm, and the internal diameter of described armored concrete pipe culvert is
φ 40cm, wall thickness is 8cm.
Further, the domatic ratio of slope of draining described in described step 3 is 1:1.5.
Further, described in described step 4, the horizontal wall inscription ratio of slope of domatic barricade water side is 8%.
Further, the 20cm of a diameter of φ of first row water pipe described in described step 4, material is UPVC.
Further, in described step 4, the scheme of burying underground of described first row water pipe is lower floor 7,6, upper strata, is spaced cloth
And if interlamellar spacing and tube pitch are 60cm.
Further, the pvc pipe of a diameter of 2cm of electrothermal tube described in described step 4 or the steel pipe of a diameter of φ 32cm.
Further, the bank protection ratio of slope described in described step 5 is 1:1.5, and described mortar flag stone thickness is 30cm, described
Draining ratio of slope outside first row water pipe outlet is 10%.
Further, at described first row water pipe outlet to one section of cable buried outside hole in described step 4, described cable buries
It is provided with temperature transducer.
Compared with prior art, superior effect is: the present invention is when tunnel in cold area hole external thermal insulation outlet is constructed, owing to using
The mode of outlet layering draining, after drain pipe port ground floor freezes, water level is raised by water by the slabstone water storehouse at rear,
Being discharged by upper strata drain pipe, after the upper strata mouth of pipe freezes, water body self has certain temperature will be slowly by the row of bottom again
Hose nozzle melts dredging, and water, will not be frozen in the case of constant flow, and uses various such as asbestos, coal at outlet
The auxiliary Insulation such as slag, the water in slope protection scope should not freeze, and water is passed through in crop out in the least scope of an outlet
The temperature of body self is enough to ensure that the mouth of pipe is the most frozen, and separately the lower section at drain pipe arranges heat tape, runs into extreme climate, can
Take electrically heated Insulation, so that it is guaranteed that the proper drainage effect of outlet.
Accompanying drawing explanation
Fig. 1 is flow chart of the present invention；
Fig. 2 is present configuration plane graph；
Fig. 3 is present configuration elevation；
Fig. 4 is present configuration I-I profile；
Fig. 5 is second row water pipe scheme of installation in the present invention；
Fig. 6 is first row water pipe scheme of installation in the present invention.
Reference is as follows:
1-headwall, 2-eight word aileron, 3-bank protection, 4-aileron termination, 5-mortar flag stone, 6-first row water pipe, 7-draining is domatic,
8-dry chip stone, 9-second row water pipe pedestal, 10-second row water pipe, 11-backfills covering, 12-electrothermal tube, 13-temperature transducers
Device, 14-test cable, 15-heat tape, 16-inspection shaft, 17-insulation material, 18-sensor wire post, 19-cat ladder.
Detailed description of the invention
Below in conjunction with the accompanying drawings the specific embodiment of the invention is described in further detail.
Below in conjunction with Figure of description 1-6, illustrate the present invention, the invention provides a kind of tunnel in cold area hole external thermal insulation water outlet
The construction method of mouth, as it is shown in figure 1, the most so apply, first apply out outlet, hole inspection shaft 16, inspection shaft 16
Inside setting cat ladder 19, bury outlet armored concrete pipe culvert underground, pipe culvert pedestal uses No. 15 cement concretes to pour, and determines water outlet
Mouth position, excavation applies outlet foundation trench, and described outlet foundation trench first applies 15cm Base with Sand Gravel Cushion, then pours 10cm15
Number cement concrete；Then applying outlet headwall 1, headwall 1 uses mortar flag stone 5 to apply, and reserves and bury underground in the middle part of headwall 1
As the armored concrete pipe culvert of the second drain tube holes 10, buried with outside hole section of outlet inspection shaft 16 pipe culvert connects, and pipe culvert goes out
Outside the mouth of a river to hole, buried one section of test cable 14, test cable 14 is embedded with temperature transducer 13；As it is shown on figure 3, headwall
1 apply during pre-buried centre be provided with penetration pipe and the sensor wire post 18 of heat tape 15, described sensor wire post 18
It is connected with power supply and temperature transducer 13, for the later stage, electric device is installed and prepares；Outlet connects headwall location and arranges weathering
Face 7, draining domatic 7 uses and grouts, and both sides use eight word ailerons 2 to do gear and protect, and described eight word ailerons 2 use mortar flag stone to execute
Making, aileron termination uses retaining wall closure, and aileron termination 4 barricade is the UPVC of pre-buried two-layer internal diameter 20cm during applying
Pipe is laid, and interlamellar spacing and tube pitch are 60cm, use dry-laid rubble 8 to backfill, the domatic upper elder generation of slabstone in described eight word ailerons 2
Lay one layer of geotextiles to re-lay one layer of rock wool and make mask, apply and apply water outlet horizontal wall inscription outside eight word aileron terminations 4, two buried underground
Layer internal diameter is that the UPVC pipe of 20cm uses as first row water pipe, and ratio of slope of burying underground therein is 8%, the row reserved with aileron termination
Water pipe is connected, and as shown in Figure 6, every UPVC first row water pipe 6 is outside equipped with two electrothermal tubes 12, sets in electrothermal tube 12
There is heat tape 15, above described every UPVC first row water pipe 6, install temperature transducer 13 and test cable 14, described electricity
Heat pipe 12 is arranged in below first row water pipe 6 both sides closely connected with described first row water pipe 6, and described electrothermal tube 12 is always from going out
Dew opening's edge below domatic extend in drainage culvert stretch out certain distance；As it is shown in figure 5, described second row water pipe 10 surrounding is adopted
Fixing with concrete filling, the external diameter of described second drain tube holes 10 being provided with is φ 40cm, described concrete reinforced pipe
The internal diameter contained is φ 40cm, and wall thickness is 8cm；Re-lay as it is shown on figure 3, lay one layer of geotextiles above first row water pipe 6
One layer of rock wool protection, above rock wool, backfill covering cinder is to headwall plane, carries out mortar rubble masonry pavement 3, institute above cinder
State first row water pipe 6 and pass domatic, it is ensured that water flows out naturally from the outlet of described first row water pipe 6, described outlet peripheral hardware
The concrete weathering 7 having wide 1m thickness 25cm ratio of slope to be 10%；Mortar flag stone domatic brushing bituminous coating, prevents Exposure to Sunlight and rainwater
Soak, cause domatic weathering damage, the pipe that the described second preferred internal diameter of drain tube holes 10 is φ 40cm being provided with, described
The internal diameter of armored concrete pipe culvert is φ 40cm, and wall thickness is 8cm；Wherein it is additionally provided with power-line terminal as reserved wiring for current potential
Put, nearby build supplying electricity and power distribution facility, power distribution cabinet etc. is set, when needing according to the later stage, be powered heating, wherein said row
Domatic 7 ratios of slope of water are 1:1.5, and the horizontal wall inscription ratio of slope of described domatic barricade water side is 8%, and described first row water pipe 6 is the most straight
Footpath is φ 20cm, and material is the specification of UPVC, and burying the described first row water pipe 6 of two-layer underground and burying scheme underground is lower floor 7, upper strata
6, interval is laid, and interlamellar spacing is 60cm；Described electrothermal tube 12 is preferably the pvc pipe of a diameter of 20cm or a diameter of φ 32cm
Steel pipe, described mortar flag stone thickness is 30cm, and the drainage grade outside described first row water pipe 6 outlet is 10%, at Han Qu
During the construction of Tunnel external thermal insulation outlet, owing to using the mode of outlet layering draining, after drain pipe port ground floor freezes,
Water level is raised by water by the slabstone water storehouse at rear, then is discharged by upper strata second row water pipe 10, after the upper strata mouth of pipe freezes,
Water body self has certain temperature slowly first row water pipe 6 outlet of bottom will be melted dredging, and water is at constant flow
In the case of, will not be frozen, and outlet have employed various as asbestos, cinder etc. assist Insulation, at slope protection
The water of scope should not freeze, crop out in the least scope of an outlet, by the temperature of water body self be enough to ensure that the mouth of pipe not by
Freezing, separately the lower section at drain pipe arranges heat tape, runs into extreme climate, can take electrically heated Insulation, thus really
Protect the heat insulation effect of outlet.
The present invention is not limited to above-mentioned embodiment, in the case of without departing substantially from the flesh and blood of the present invention, those skilled in the art
It is contemplated that any deformation, improve, replace and each fall within the scope of the present invention.
Claims (10)
1. the construction method of a tunnel in cold area hole external thermal insulation outlet, it is characterised in that comprise the following steps:
Step 1: determine position, the mouth of a river, excavates outlet foundation trench in described outlet position, and described foundation trench first uses sand
Gravel bed course, then casting concrete；
Step 2: apply outlet headwall, described headwall uses mortar flag stone to apply, buries armored concrete underground in the middle part of described headwall
Pipe culvert is connected as reserved second drain tube holes and buried with outside hole section and causes at described outlet headwall；
Step 3: apply described outlet domatic with the draining of described headwall location, and splayed aileron is set in both sides does gear and protect,
It is domatic, based on the domatic lower section of described slabstone uses mortar flag stone also that described draining domatic lower section backfill ragstone layer forms slabstone
Make barricade, above described slabstone is domatic, first lays one layer of geotextiles re-lays one layer of rock wool and do overcoat；
Step 4: arrange horizontal wall inscription at domatic barricade water outlet end, described horizontal wall inscription is provided with the gradient, and sets at domatic barricade water outlet end
Putting and bury two-layer first row water pipe at horizontal wall inscription underground, interlamellar spacing and the tube pitch of described first row water pipe are laid according to a determining deviation, often
Arranging two electrothermal tubes outside first row water pipe described in root, install temperature transducer above described electrothermal tube, described electrothermal tube is arranged in
Both sides closely connected with described first row water pipe below described first row water pipe, described electrothermal tube is always domatic along lower section extends to draining
Culvert pipe and stretch out certain distance；
Step 5: in described step 4, described first row water pipe surrounding uses concrete filling fixing, on described first row water pipe
Side lays one layer of geotextiles and re-lays one layer of rock wool, and above described rock wool, backfill cinder is to end wall surface, applies above described cinder
Mortar rubble masonry pavement, described first row water pipe passes bank protection face, it is ensured that water can flow out naturally from described first row water pipe, described
First row water pipe water outlet is provided with weathering；
Step 6: apply bituminous coating on the surface of described mortar rubble masonry pavement.
The construction method of tunnel in cold area hole external thermal insulation outlet the most according to claim 1, it is characterised in that in described step 1
The thickness of Base with Sand Gravel Cushion be 15cm, described concreting thickness is 10cm, and model is C15.
The construction method of tunnel in cold area hole external thermal insulation outlet the most according to claim 1, it is characterised in that described step 2
Described in second row water pipe external diameter be φ 40cm, the internal diameter of described armored concrete pipe culvert is φ 40cm, and wall thickness is 8cm.
The construction method of tunnel in cold area hole external thermal insulation outlet the most according to claim 1, it is characterised in that described step 3
Described in the domatic ratio of slope of draining be 1:1.5.
The construction method of tunnel in cold area hole external thermal insulation outlet the most according to claim 1, it is characterised in that described step 4
In the horizontal wall inscription ratio of slope of domatic barricade water outlet end be 8%.
The construction method of tunnel in cold area hole external thermal insulation outlet the most according to claim 1, it is characterised in that described step 4
Described in first row water pipe a diameter of φ 20cm, material is UPVC.
The construction method of tunnel in cold area hole external thermal insulation outlet the most according to claim 1, it is characterised in that described step 4
In, the scheme of burying underground of described first row water pipe is lower floor 7,6, upper strata, and interval laying and interlamellar spacing and tube pitch are 60cm.
The construction method of tunnel in cold area hole external thermal insulation outlet the most according to claim 1, it is characterised in that described step 4
Described in the pvc pipe of a diameter of 20cm of electrothermal tube or the steel pipe of a diameter of φ 32cm.
The construction method of tunnel in cold area hole external thermal insulation outlet the most according to claim 1, it is characterised in that described step 5
Described in the bank protection ratio of slope be 1:1.5, described mortar flag stone thickness is 30cm, the weathering outside described first row water pipe outlet
Ratio of slope is 10%.
The construction method of tunnel in cold area hole external thermal insulation outlet the most according to claim 1, it is characterised in that described step
At described first row water pipe outlet to one section of cable buried outside hole in 4, described cable is embedded with temperature transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410395898.7A CN104179513B (en) | 2014-08-13 | 2014-08-13 | A kind of construction method of tunnel in cold area hole external thermal insulation outlet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410395898.7A CN104179513B (en) | 2014-08-13 | 2014-08-13 | A kind of construction method of tunnel in cold area hole external thermal insulation outlet |
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| Publication Number | Publication Date |
|---|---|
| CN104179513A CN104179513A (en) | 2014-12-03 |
| CN104179513B true CN104179513B (en) | 2016-08-17 |
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| CN201410395898.7A Expired - Fee Related CN104179513B (en) | 2014-08-13 | 2014-08-13 | A kind of construction method of tunnel in cold area hole external thermal insulation outlet |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106948832B (en) * | 2017-03-14 | 2019-03-29 | 中铁隧道集团二处有限公司 | A kind of tunnel in cold regions heat-insulating water outlet construction method |
| CN109404011A (en) * | 2018-09-10 | 2019-03-01 | 北京隧盾市政建设有限公司 | A kind of heat insulating construction method of pipe curtain slip casting tunnel water outlet |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100443819B1 (en) * | 2003-10-14 | 2004-08-11 | 건양씨앤이 주식회사 | Underway Tunneling Methods of arch typed Triangle Elementary pipe-roof |
| JP5163424B2 (en) * | 2008-10-23 | 2013-03-13 | 株式会社大林組 | Groundwater drainage structure and tunnel construction method having the drainage structure |
| CN101614129B (en) * | 2009-08-10 | 2011-07-27 | 招商局重庆交通科研设计院有限公司 | Construction method of tunnel waterproof and water drainage system |
| CN101985882B (en) * | 2010-08-10 | 2012-07-04 | 中铁二十局集团有限公司 | Construction method of rigid primary support of mould-building concrete of plateau permafrost tunnel |
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Inventor after: Chen Jun Inventor after: Liu Juncheng Inventor after: Qin Ling Inventor after: Zhang Zhen Inventor after: Tang Xu Inventor after: Yue Cheng Inventor after: Yang Chunbo Inventor after: Lai Jinxing Inventor before: Chen Jun Inventor before: Liu Juncheng Inventor before: Qin Ling Inventor before: Zhang Zhen Inventor before: Tang Xu Inventor before: Yue Cheng Inventor before: Yang Chunbo |
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