CN108798777A - A kind of built-in pipe cutting construction method of tunnel circumferential direction heat preservation blind pipe - Google Patents
A kind of built-in pipe cutting construction method of tunnel circumferential direction heat preservation blind pipe Download PDFInfo
- Publication number
- CN108798777A CN108798777A CN201810581887.6A CN201810581887A CN108798777A CN 108798777 A CN108798777 A CN 108798777A CN 201810581887 A CN201810581887 A CN 201810581887A CN 108798777 A CN108798777 A CN 108798777A
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- Prior art keywords
- pipe
- built
- heat preservation
- blind pipe
- circumferential direction
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Classifications
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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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
- G01C15/002—Active optical surveying means
- G01C15/004—Reference lines, planes or sectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
- G01C15/02—Means for marking measuring points
- G01C15/06—Surveyors' staffs; Movable markers
- G01C15/08—Plumbing or registering staffs or markers over ground marks
Abstract
The invention belongs to the built-in pipe cutting construction methods that technical field of tunnel construction more particularly to a kind of tunnel circumferential direction keep the temperature blind pipe, including：Measurement and positioning, built-in pipe installation, gunite concrete, built-in pipe is removed, circumferential heat preservation blind pipe is installed.The present invention uses built-in pipe cutting, forming to be fixed convenient for blind pipe installation, using manipulator gunite concrete, effectively avoid the waste of concrete, easy to operate, short time limit is at low cost, saves human and material resources and financial resources.
Description
Technical field
The invention belongs to technical field of tunnel construction, are related to a kind of built-in pipe cutting construction party of tunnel circumferential direction heat preservation blind pipe
Method.
Background technology
China builds a plurality of railway for being located at cold and severe cold area in recent years, for the draining system of tunnel-liner behind
System, continues to use the draining theory of circumferential blind pipe mostly at present, and circumferential Permeable blind pipe is arranged behind using in moulded lining and splash guard
Ejectment to tunnel center gutter mode.From the point of view of railway projects have been built up in northeast, northwest, this traditional lining cutting in tunnel
Behind blind pipe drainage system resistance to frost is also not satisfactory.Since thickness of tunnel linings is generally 35~70cm, respectively less than freeze
Depth, it is pre-buried that the embedding needs of circumferential blind pipe dig cutting into country rock outside preliminary bracing.
As Chinese Patent Application No. is：A kind of tunnel longitudinal drainage blind pipe of the patent disclosure of CN201720883801.6 is solid
Determine structure, it is desirable to provide a kind of longitudinal drainage blind pipe fixed structure in tunnel easy for construction.It include package draining blind pipe and with
The geotextiles of preliminary bracing wall surface fitting are set to for hanging draining blind pipe and geotextiles, the suspender belt in J-shaped on the outside of suspender belt
The splash guard in face is filled in the non-fine concrete of draining blind pipe upper end and two fixes suspender belt short side upper end respectively and suspender belt is long
The fixing piece of side upper end；The fixing piece includes hot melt washer, and is arranged on hot melt washer and is inserted into preliminary bracing
Nailing；The splash guard and hot melt washer hot-melt adhesive paste.Utility model construction positioning is convenient, accurate, and production efficiency can be improved,
It is cost-effective.It provides a kind of fixed structure of longitudinal drainage blind pipe, but is not involved with circumferential heat preservation blind pipe cutting peace
The construction procedure of dress.There is no directive significance to Specific construction.
Invention content
In view of the deficiencies of the prior art, it is an object of the present invention to provide the built-in pipe cuttings that a kind of tunnel circumferential direction keeps the temperature blind pipe
Construction method forms groove, installs circumferential heat preservation blind pipe, increase by increasing pre-buried shotcrete pipe before gunite concrete after dismounting
Face is drained between first branch and two linings, reduces circumferential heat preservation blind pipe because frost loses drainage effect.
In order to solve the above-mentioned technical problem, the present invention is achieved by the following technical solutions：
The built-in pipe cutting construction method, includes the following steps,
1. a kind of built-in pipe cutting construction method of tunnel circumferential direction heat preservation blind pipe, which is characterized in that include the following steps：
Step 1, measurement and positioning built-in pipe：
Step 1.1, mileage position is designed according to blind pipe, the point on the basis of Tunnel inside conductor control point uses total powerstation
Non-prism pattern according to the circumferential heat preservation blind pipe installation mileage position surveying and locating finished in advance；
Step 1.2, according to the laser spot position of total powerstation, long 15cm, wide 2cm mark lines, along first are made using spray painting mode
Just pneumatically placed concrete surface, every 3 meters of circumferential direction do one of tag line for phase supporting；
Step 1.3, two ends of tag line are determined using total powerstation laser point, the end deviations of tag line ±
Within 1cm；
Step 1.4, get out of a predicament or an embarrassing situation pre-buried pipe construction when, measure top bar and the center mileage of cutting be completed, using total powerstation
Position built-in pipe mileage position of getting out of a predicament or an embarrassing situation；Top bar, built-in pipe position lap position of getting out of a predicament or an embarrassing situation are crossed using normal line method, interface
Deviation ± 1cm；
Step 2, built-in pipe is installed：
Step 2.1, the circumferential heat preservation blind pipe mark line determined according to step 1, with tied silk banding fixedPre-buried modeling
Sebific duct is bound using tied silk, and tied silk is consolidated using dog；
Step 2.2, built-in pipe is processed, measures top bar, arc length of getting out of a predicament or an embarrassing situation, the pre-buried length of tube of top bar is according to top bar arc
Long cutting, pre-buried length of tube of getting out of a predicament or an embarrassing situation are pressed after step arc length is further added by 20cm and carry out cutting；
Step 2.3, it is left side arch springing, left side haunch, vault, right side haunch, the right side that top bar built-in pipe, which fixes binding sequence,
Side arch springing is fixedly arranged at by dog in the mesh sheet of preliminary bracing with tied silk successively；
Step 2.4, built-in pipe of getting out of a predicament or an embarrassing situation fixes binding sequence from top to bottom, is penetrated with being used at top bar cutting overlap joint 20cm
Nail gun is fixed, and using the geotextiles package of width 4cm, long 15cm, is then fixedly arranged in mesh sheet by dog with tied silk successively；
Step 3, gunite concrete：
Step 3.1, construction section is divided to construction surface in tunnel, it is longitudinally divided along tunnel, 3m is less than per segment length；
Step 3.2, prefabricated C25 concrete is stirred, using manipulator from bottom to top to every section of construction section gunite concrete；
Step 4, built-in pipe is removed：
After the completion of gunite concrete in 5 minutes, the tied silk of built-in pipe is cut, last layer of gunite concrete completes 5~10
Minute, the built-in pipe for having sprayed and having completed position is from bottom to top gradually removed, the symmetrical injection by arch springing of top bar left and right sides is mixed
Solidifying soil, side gunite concrete remove built-in pipe after completing 3m, and manipulator nozzle turns to other side gunite concrete, realizes injection
Concrete construction operation is synchronous with built-in pipe construction operation is removed to be carried out；
Step 5, the circumferential heat preservation blind pipe of installation：
Step 5.1, after built-in pipe is removed, built-in pipe groove dimensions are checked, expansion slot is carried out to the part being open less than 10cm
Processing；The parts 10cm are more than to opening, are replenished using cement；
Step 5.2, the circumferential direction heat preservation 50 centimeters wide non-woven fabrics spiral wrap of blind pipe to be wrapped up, spiral overlaps 5cm packages,
It is tied up with 3 tied silks every 1m；
Step 5.3, fixing band using the splash guard of 3cm wide × 15cm long willCircumferential heat preservation blind pipe be fixed on it is recessed
In slot, it is fixed on the basal plane of preliminary bracing in the fixed dozen nailing that takes with nailing gun；Splash guard fixes the vault of band, for waist
Divide constant spacing 50cm, arch springing part constant spacing 100cm.
Further, in the step 3.2, the basal plane recess of preliminary bracing is sprayed using manipulator and is put down, then from bottom to top
Sequence layering injection 3 times.
Further, in the step 2.1, the spacing of tied silk binding is 10cm~20cm.
Further, in the step 3.2,3 layers of injection of gunite concrete point, every layer of jet thickness is in 3~3.3cm.
Further, after starting manipulator, starting wind pressure starts spraying, the arch feet division of labor style after reaching 0.5MPa
0.3~0.5MPa is pressed, divides wind pressure of work 0.4~0.65MPa for waist, dome portions, nozzle is vertical with by spray plane, nozzle and by spray plane
Spacing is 1.5~2.0m；
Beneficial effects of the present invention are：
1. built-in pipe cutting construction method of the present invention uses manipulator gunite concrete, the wave of concrete is effectively avoided
Take；
2. built-in pipe cutting construction method of the present invention uses built-in pipe cutting, forming to be fixed convenient for blind pipe installation；
3. built-in pipe cutting construction method of the present invention is easy to operate, at low cost, human and material resources and financial resources are saved；
4. built-in pipe cutting construction method short time limit of the present invention is convenient for operation management and maintenance.
Description of the drawings
Fig. 1 is built-in pipe cutting construction method process flow chart of the present invention；
Fig. 2 is the circumferential heat preservation blind pipe scheme of installation of built-in pipe cutting construction method of the present invention.
In figure：1- preliminary bracings, 2- are molded cutting, and 3- circumferential directions keep the temperature blind pipe, 4- thermal insulation boards, 5- secondary linings.
Specific implementation mode
The specific embodiment of the invention is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1 and Figure 2, the built-in pipe cutting construction method, includes the following steps,
Step 1, measurement and positioning built-in pipe：
Design mileage position according to blind pipe, using total powerstation in Tunnel setting-out built-in pipe burial place；
Step 1.1, the point on the basis of Tunnel inside conductor control point, using non-prism pattern according to the circumferential direction finished in advance
Keep the temperature blind pipe installation mileage position surveying and locating；
Step 1.2, according to total powerstation laser spot position, long 15cm, wide 2cm mark lines, along initial stage are made using spray painting mode
Just pneumatically placed concrete surface, every 3 meters of circumferential direction do one of tag line for supporting；
Step 1.3, two ends of tag line are determined using total powerstation laser point, the end deviations of tag line ±
Within 1cm；
Step 1.4, get out of a predicament or an embarrassing situation pre-buried pipe construction when, measure top bar and the center mileage of cutting be completed, using total powerstation
Position built-in pipe mileage position of getting out of a predicament or an embarrassing situation；Top bar, built-in pipe position lap position of getting out of a predicament or an embarrassing situation are crossed using normal line method, it is ensured that on
Cutting of getting out of a predicament or an embarrassing situation is straight, interface deviation ± 1cm；
Step 2, built-in pipe is installed；
Step 2.1, the circumferential heat preservation blind pipe mark line determined according to step 1, with tied silk banding fixedPre-buried modeling
Sebific duct, tied silk bind spacing 10cm~20cm, and tied silk is consolidated using dog；
Step 2.2, built-in pipe is processed, measures top bar, arc length of getting out of a predicament or an embarrassing situation, the pre-buried length of tube of top bar is according to top bar arc
Long cutting, pre-buried length of tube of getting out of a predicament or an embarrassing situation press step arc length and increase 20cm cuttings；
Step 2.3, top bar built-in pipe fix binding sequence be left side arch springing, left side haunch, vault, right side haunch-,
Right side arch springing is fastened on by dog in the mesh sheet of preliminary bracing with tied silk successively；
Step 2.4, built-in pipe of getting out of a predicament or an embarrassing situation fixes binding sequence from top to bottom, is penetrated with being used at top bar cutting overlap joint 20cm
Nail gun is fixed, and using the geotextiles package of width 4cm, long 15cm, is then fixedly arranged in mesh sheet by dog with tied silk successively；
Step 3, gunite concrete：
Step 3.1, construction section is divided to construction surface in tunnel, it is longitudinally divided along tunnel, 3m is less than per segment length；
Step 3.2, prefabricated C25 concrete is stirred, using manipulator from bottom to top to every section of construction section gunite concrete；Spray
3 layers of injection of concrete point are penetrated, every layer of jet thickness is in 3~3.3cm；After starting manipulator, starting wind pressure is opened after reaching 0.5MPa
Beginning spraying, arch feet divide wind pressure of work 0.3~0.5MPa, divide wind pressure of work 0.4~0.65MPa for waist, dome portions, nozzle
It is vertical with by spray plane, nozzle with by spray plane spacing be 1.5~2.0m；
Step 4, built-in pipe is removed：
After the completion of last layer of gunite concrete in 5 minutes, the tied silk of built-in pipe is cut, last layer of gunite concrete is complete
At 5~10 minutes, the built-in pipe for having sprayed and having completed position is from bottom to top gradually removed, top bar left and right sides is symmetrical by arch springing
Gunite concrete, side gunite concrete remove built-in pipe after completing 3m, and manipulator nozzle turns to other side gunite concrete, spray
It penetrates concrete construction operation and is carried out at the same time with built-in pipe construction operation is removed；
Step 5, the circumferential heat preservation blind pipe 3 of installation：
Step 5.1, after built-in pipe is removed, built-in pipe groove dimensions are checked, expansion slot is carried out to the part being open less than 10cm
Processing；The parts 10cm are more than to opening, are replenished using cement；
Step 5.2, it after built-in pipe cutting molding, avoids geotextiles from wrapping up imprecision with blind pipe, inverted arch is completed in hole
In fill surface, the circumferential direction heat preservation 50 centimeters wide non-woven fabrics spiral wrap of blind pipe 3 is wrapped up, spiral overlaps 5cm packages, every 1m
It is tied up with 3 tied silks；
Step 5.3, fixing band using the splash guard of 3cm wide × 15cm long willCircumferential heat preservation blind pipe 3 be fixed on it is recessed
In slot, it is fixed on the basal plane of preliminary bracing 1 in the fixed dozen nailing that takes with nailing gun；Splash guard fixes band arch constant spacing
50cm, abutment wall portion constant spacing 100cm.
Further, in the step 3.2, manipulator, which first sprays low-lying place, puts down, then sequence from low to uper part layering, reciprocal spray
It penetrates.
After circumferential direction heat preservation blind pipe 3 installs, thermal insulation board 4 is installed using nailing gun on surface, thermal insulation board 4 installs
Afterwards, secondary lining 5 is carried out by manipulator.
Present invention is not limited to the embodiments described above, in the substantive content without departing substantially from the present invention, art technology
Any deformation, improvement, the replacement that personnel are contemplated that each fall within protection scope of the present invention.
Claims (5)
1. a kind of built-in pipe cutting construction method of tunnel circumferential direction heat preservation blind pipe, which is characterized in that include the following steps：
Step 1, measurement and positioning built-in pipe：
Step 1.1, mileage position is designed according to blind pipe, the point on the basis of Tunnel inside conductor control point uses exempting from for total powerstation
Prism pattern is according to the circumferential heat preservation blind pipe installation mileage position surveying and locating finished in advance；
Step 1.2, according to the laser spot position of total powerstation, long 15cm, wide 2cm mark lines, along initial stage branch are made using spray painting mode
Just pneumatically placed concrete surface, every 3 meters of circumferential direction do one of tag line to shield；
Step 1.3, determine two ends of tag line using total powerstation laser point, the end deviations ± 1cm of tag line with
It is interior；
Step 1.4, get out of a predicament or an embarrassing situation pre-buried pipe construction when, measure top bar and the center mileage of cutting be completed, positioned using total powerstation
It gets out of a predicament or an embarrassing situation built-in pipe mileage position；Top bar, built-in pipe position lap position of getting out of a predicament or an embarrassing situation are crossed using normal line method, interface deviation
±1cm；
Step 2, built-in pipe is installed：
Step 2.1, the circumferential heat preservation blind pipe mark line determined according to step 1, with tied silk banding fixedPre-buried plastic pipe,
It is bound using tied silk, tied silk is consolidated using dog；
Step 2.2, built-in pipe is processed, top bar, arc length of getting out of a predicament or an embarrassing situation are measured, the pre-buried length of tube of top bar is cut out according to top bar arc length
It cuts, pre-buried length of tube of getting out of a predicament or an embarrassing situation is pressed after step arc length is further added by 20cm and carries out cutting；
Step 2.3, it is left side arch springing, left side haunch, vault, right side haunch, right side arch that top bar built-in pipe, which fixes binding sequence,
Foot is fixedly arranged at by dog in the mesh sheet of preliminary bracing with tied silk successively；
Step 2.4, built-in pipe of getting out of a predicament or an embarrassing situation fixes binding sequence from top to bottom, is overlapped with top bar cutting and uses nailing gun at 20cm
It is fixed, and using the geotextiles package of width 4cm, long 15cm, be then fixedly arranged in mesh sheet by dog with tied silk successively；
Step 3, gunite concrete：
Step 3.1, construction section is divided to construction surface in tunnel, it is longitudinally divided along tunnel, 3m is less than per segment length；
Step 3.2, prefabricated C25 concrete is stirred, using manipulator from bottom to top to every section of construction section gunite concrete；
Step 4, built-in pipe is removed：
After the completion of gunite concrete in 5 minutes, the tied silk of built-in pipe is cut, last layer of gunite concrete is completed 5~10 minutes,
From bottom to top gradually remove sprayed complete position built-in pipe, top bar left and right sides symmetrical gunite concrete by arch springing,
Side gunite concrete removes built-in pipe after completing 3m, and manipulator nozzle turns to other side gunite concrete, realizes injection coagulation
Native construction operation is synchronous with built-in pipe construction operation is removed to carry out；
Step 5, the circumferential heat preservation blind pipe of installation：
Step 5.1, after built-in pipe is removed, built-in pipe groove dimensions are checked, the part being open less than 10cm is carried out to expand slot processing；
The parts 10cm are more than to opening, are replenished using cement；
Step 5.2, the circumferential direction heat preservation 50 centimeters wide non-woven fabrics spiral wrap of blind pipe to be wrapped up, spiral overlaps 5cm packages, every
1m is tied up with 3 tied silks；
Step 5.3, fixing band using the splash guard of 3cm wide × 15cm long willCircumferential heat preservation blind pipe be fixed in groove,
It is fixed on the basal plane of preliminary bracing in the fixed dozen nailing that takes with nailing gun；Splash guard is fixed the vault of band, is consolidated for waist portions
Determining deviation 50cm, arch springing part constant spacing 100cm.
2. a kind of built-in pipe cutting construction method of tunnel circumferential direction heat preservation blind pipe according to claim 1, which is characterized in that
In the step 2.1, the spacing of tied silk binding is 10cm~20cm.
3. a kind of built-in pipe cutting construction method of tunnel circumferential direction heat preservation blind pipe according to claim 1, which is characterized in that
In the step 3.2, the basal plane recess of preliminary bracing is sprayed using manipulator and is put down, then sequence from low to uper part layering is sprayed 3 times.
4. a kind of built-in pipe cutting construction method of tunnel circumferential direction heat preservation blind pipe according to claim 1, which is characterized in that
In the step 3.2,3 layers of injection of gunite concrete point, every layer of jet thickness is in 3~3.3cm.
5. a kind of built-in pipe cutting construction method of tunnel circumferential direction heat preservation blind pipe according to claim 1, which is characterized in that
In the step 3.2, after reaching 0.5MPa to the starting wind pressure of every section of construction section gunite concrete from bottom to top using manipulator
Start spraying, arch feet divide wind pressure of work be 0.3~0.5MPa, for waist, dome portions divide wind pressure of work be 0.4~
0.65MPa, nozzle is vertical with by spray plane, nozzle with by spray plane spacing be 1.5~2.0m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810581887.6A CN108798777B (en) | 2018-06-07 | 2018-06-07 | Pre-buried pipe grooving construction method for annular heat-insulation blind pipe of tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810581887.6A CN108798777B (en) | 2018-06-07 | 2018-06-07 | Pre-buried pipe grooving construction method for annular heat-insulation blind pipe of tunnel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108798777A true CN108798777A (en) | 2018-11-13 |
| CN108798777B CN108798777B (en) | 2020-02-21 |
Family
ID=64088841
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810581887.6A Active CN108798777B (en) | 2018-06-07 | 2018-06-07 | Pre-buried pipe grooving construction method for annular heat-insulation blind pipe of tunnel |
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| CN (1) | CN108798777B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681271A (en) * | 2019-01-04 | 2019-04-26 | 交通运输部公路科学研究所 | A kind of built-in type tunnel ring direction drainpipe method for arranging |
| CN110985059A (en) * | 2019-12-28 | 2020-04-10 | 杨雪 | Supporting structure for spraying concrete on smooth surface of deep coal mine roadway |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681271A (en) * | 2019-01-04 | 2019-04-26 | 交通运输部公路科学研究所 | A kind of built-in type tunnel ring direction drainpipe method for arranging |
| CN109681271B (en) * | 2019-01-04 | 2021-01-08 | 交通运输部公路科学研究所 | Method for arranging circumferential drainage pipes of pre-buried tunnel |
| CN110985059A (en) * | 2019-12-28 | 2020-04-10 | 杨雪 | Supporting structure for spraying concrete on smooth surface of deep coal mine roadway |
| CN110985059B (en) * | 2019-12-28 | 2021-12-10 | 杨雪 | Supporting structure for spraying concrete on smooth surface of deep coal mine roadway |
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| Publication number | Publication date |
|---|---|
| CN108798777B (en) | 2020-02-21 |
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