CN210317339U - Two lining vault slip casting pipe subassemblies - Google Patents
Two lining vault slip casting pipe subassemblies Download PDFInfo
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- CN210317339U CN210317339U CN201921271745.6U CN201921271745U CN210317339U CN 210317339 U CN210317339 U CN 210317339U CN 201921271745 U CN201921271745 U CN 201921271745U CN 210317339 U CN210317339 U CN 210317339U
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- 238000007569 slipcasting Methods 0.000 title abstract description 31
- 239000011440 grout Substances 0.000 claims abstract description 45
- 239000000463 material Substances 0.000 claims description 3
- 238000007711 solidification Methods 0.000 abstract description 2
- 230000008023 solidification Effects 0.000 abstract description 2
- 230000006978 adaptation Effects 0.000 abstract 1
- 239000002002 slurry Substances 0.000 description 30
- 239000004568 cement Substances 0.000 description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 238000010276 construction Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000003638 chemical reducing agent Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 239000011398 Portland cement Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 238000003490 calendering Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004746 geotextile Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Lining And Supports For Tunnels (AREA)
Abstract
The utility model discloses a two lining vault slip casting pipe subassemblies, including being responsible for and the auxiliary pipe, be responsible for and the parallel interval of auxiliary pipe sets up and the mouth of pipe parallel and level, it suits with every ring lining length to be responsible for length, the auxiliary pipe length is for the two-thirds of being responsible for length, all be equipped with a plurality of overfall holes on the body of being responsible for and the auxiliary pipe, the overfall hole just follows the vertical interval arrangement of body at the body top, and does not establish the overfall hole apart from the mouth of pipe certain length within range on being responsible for and the auxiliary pipe, still include a plurality of fixed plates, the fixed plate is located to be responsible for and the auxiliary bottom and just follows the vertical interval arrangement of body, the mouth of pipe department of being responsible for and auxiliary pipe even has the slip casting to connect, the slip casting connects and slip casting machine pipeline adaptation. The utility model discloses form false slip casting phenomenon in the time of can avoiding the slip casting, guarantee that the vault slip casting is filled, and behind the grout solidification with two lining concrete bonding effectual, improve lining cutting vault area mould slip casting success rate.
Description
Technical Field
The utility model relates to a two lining construction fields in tunnel, concretely relates to two lining vault slip casting pipe subassemblies.
Background
The secondary lining of the tunnel is relative to the primary lining, after primary support of the tunnel is completed, concrete is poured on the inner side, the process is generally realized by adopting a secondary lining steel mould trolley, the reinforcement and the attractiveness of the whole tunnel are ensured after final forming, however, in the secondary lining process, a void space is formed by concrete loss caused by elastic deformation before and after trolley pouring, concrete shrinkage, instant release of pressure accumulated in a pumping pipeline after lining pouring, untimely field plugging and the like.
In order to solve the problem of a void space of a two-lining vault, grouting filling is usually carried out after initial setting of two-lining concrete, and the lining vault grouting technology with a mold comprises radial grouting and longitudinal grouting, wherein two pipelines are preset along the radial direction of a tunnel, and because the radial pipelines abut against a waterproof plate, the situation that the waterproof plate is punctured after the radial pipelines abut against the waterproof plate in the casting process of the two linings exists, so that grouting slurry overflows from the back of the waterproof plate, and therefore radial grouting is not adopted in actual construction. At present, longitudinal grouting is mostly adopted, two pipelines are longitudinally preset along a tunnel in the longitudinal grouting mode, one pipeline serves as a grouting pipe, the other pipeline serves as an exhaust pipe, the lengths of the grouting pipe and the exhaust pipe are the same, the whole body of the grouting pipe is in a quincunx shape, grout overflowing holes are arranged, the two pipelines are buried in a clinging mode, grout can directly overflow from the pipe opening during grouting, a false grouting phenomenon is formed, the vault is not tightly filled, the bonding effect of the grouting grout after curing and two-lining concrete is poor, and the failure rate of the longitudinal grouting is high.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at: aiming at the problems that during grouting of a two-lining vault with a mold, false grouting is easily formed by longitudinal grouting, the vault is not densely filled, and the bonding effect of grout after curing and two-lining concrete is poor, a two-lining vault grouting pipe assembly is provided, the false grouting phenomenon can be avoided during grouting, the bonding effect of grout after curing and two-lining concrete is good, and the success rate of grouting of the lining vault with the mold is improved.
In order to realize the purpose, the utility model discloses a technical scheme be:
the utility model provides a two lining vault slip casting pipe subassembly, is including being responsible for and the auxiliary pipe, be responsible for and the parallel interval of auxiliary pipe sets up and the mouth of pipe parallel and level, be responsible for length and every ring lining length and suit, the auxiliary pipe length is two-thirds of being responsible for length, be responsible for all being equipped with a plurality of overfall holes on the body of person in charge and auxiliary pipe, the overfall hole is at the body top and along the vertical interval arrangement of body, just be responsible for and the auxiliary pipe does not establish the overfall hole apart from the mouth of pipe within a certain length range, still including being used for fixed a plurality of fixed plates of being responsible for and auxiliary pipe, the fixed plate is located the body bottom and along the vertical interval arrangement of body, the mouth of pipe department of being responsible for and auxiliary pipe even has the slip casting to connect, the slip casting.
The utility model arranges the main pipe and the secondary pipe in parallel at intervals, the pipe orifices of the main pipe are parallel and level, the length of the main pipe is adapted to the length of each ring of lining, the length of the secondary pipe is two thirds of the length of the main pipe, so that the embedding depths of the main pipe and the secondary pipe are different, and the secondary pipe is arranged after the main pipe is arranged during grouting to form retreat type sectional grouting; the main pipe body and the auxiliary pipe body are respectively provided with a plurality of grout overflow holes, the grout overflow holes are arranged at the top of the pipe body and are longitudinally arranged along the pipe body at intervals, grout can overflow from one direction, air is discharged during grouting, the grout overflow holes are attached to the waterproof plate at the top of the pipe body, and the grout overflow holes can be prevented from being blocked during pouring of secondary lining concrete; the main pipe and the auxiliary pipe are not provided with the grout overflow holes within a certain length range away from the pipe orifice, so that direct overflow of grout at the pipe orifice is prevented, and effective grouting cannot be realized; and through setting up fixed plate and slip casting joint, be convenient for fix main pipe and auxiliary pipe during the use to and be convenient for be connected with the slip casting machine pipeline, adopt this two lining vault slip casting pipe subassemblies, can guarantee that the vault slip casting is full, prevent to produce the vault and come to an empty because of the slip casting is not tight.
As the preferred scheme of the utility model, still be equipped with on the slip casting joint and end the thick liquid valve. By arranging the grout stop valve, the main pipe and the auxiliary pipe can be conveniently plugged after grouting is finished.
As the preferred scheme of the utility model, the aperture in excessive thick liquid hole is 5 ~ 8mm, and the pitch-row interval is 50 ~ 80 cm. The slurry overflow hole adopts the arrangement scheme, so that pressure transmission in the pipe can be ensured during grouting.
As the utility model discloses a preferred scheme, be responsible for and the accessory pipe does not establish excessive thick liquid hole apart from mouth of pipe 300 ~ 500cm length within range, can prevent that the thick liquid from directly spilling over in mouth of pipe department, can not effective slip casting.
As the preferred scheme of the utility model, the fixed plate is the same with waterproof board material, and the fixed plate interval is 30 ~ 50 cm. By adopting the fixing plate, the fixing plate and the waterproof plate are convenient to perform hot melting welding fixation.
As the preferred scheme of the utility model, the pipe tail department of being responsible for and the auxiliary pipe is equipped with the baffle, the baffle contacts with the pipe tail tip. The baffle is arranged at the pipe tail of the main pipe and the auxiliary pipe, so that the blockage caused by the fact that a large amount of concrete enters the pipe from the two linings is prevented, and the slurry can seep out along the joint gap between the baffle and the pipe tail.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
the utility model arranges the main pipe and the secondary pipe in parallel at intervals, the pipe orifices of the main pipe are parallel and level, the length of the main pipe is adapted to the length of each ring of lining, the length of the secondary pipe is two thirds of the length of the main pipe, so that the embedding depths of the main pipe and the secondary pipe are different, and the secondary pipe is arranged after the main pipe is arranged during grouting to form retreat type sectional grouting; the main pipe body and the auxiliary pipe body are respectively provided with a plurality of grout overflow holes, the grout overflow holes are arranged at the top of the pipe body and are longitudinally arranged along the pipe body at intervals, grout can overflow from one direction, air is discharged during grouting, the grout overflow holes are attached to the waterproof plate at the top of the pipe body, and the grout overflow holes can be prevented from being blocked during pouring of secondary lining concrete; the main pipe and the auxiliary pipe are not provided with the grout overflow holes within a certain length range away from the pipe orifice, so that direct overflow of grout at the pipe orifice is prevented, and effective grouting cannot be realized; and through setting up fixed plate and slip casting joint, be convenient for fix main pipe and auxiliary pipe during the use to and be convenient for be connected with the slip casting machine pipeline, adopt this two lining vault slip casting pipe subassemblies, can guarantee that the vault slip casting is full, prevent to produce the vault and come to an empty because of the slip casting is not tight.
Drawings
Fig. 1 is a plan view of a two-lined dome slip pipe assembly according to the present invention.
Fig. 2 is a schematic sectional view of the installation of the two-lining vault grouting pipe assembly of the present invention.
Fig. 3 is a schematic view of the connection between the two-lining vault grouting pipe assembly and the grouting machine pipeline in the present invention.
The labels in the figure are: 1-main pipe, 2-auxiliary pipe, 3-fixing plate, 4-grouting joint, 5-stop valve, 6-baffle, 7-grouting machine pipeline, 8-tunnel primary support, 9-waterproof plate, 10-secondary lining concrete and 11-secondary lining end.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Examples
The present embodiment provides a two-lined dome grouting pipe assembly;
as shown in fig. 1-3, the two-lining vault grouting pipe assembly in this embodiment includes a main pipe 1 and a secondary pipe 2, the main pipe 1 and the secondary pipe 2 are arranged in parallel at intervals and have flush pipe openings, the length of the main pipe 1 is adapted to the length of each ring of lining, the length of the secondary pipe 2 is two thirds of the length of the main pipe 1, a plurality of grout overflow holes are respectively arranged on the pipe bodies of the main pipe 1 and the secondary pipe 2, the grout overflow holes are arranged at the top of the pipe bodies and longitudinally along the pipe bodies, the main pipe 1 and the secondary pipe 2 are not provided with grout overflow holes within a certain length range from the pipe openings, the two-lining vault grouting pipe assembly further includes a plurality of fixing plates 3 for fixing the main pipe 1 and the secondary pipe 2, the fixing plates 3 are arranged at the bottom of the pipe bodies and longitudinally along the pipe bodies, grouting joints 4 are connected to the pipe openings of the main pipe 1 and the secondary pipe 2.
The utility model arranges the main pipe and the secondary pipe in parallel at intervals, the pipe orifices of the main pipe are parallel and level, the length of the main pipe is adapted to the length of each ring of lining, the length of the secondary pipe is two thirds of the length of the main pipe, so that the embedding depths of the main pipe and the secondary pipe are different, and the secondary pipe is arranged after the main pipe is arranged during grouting to form retreat type sectional grouting; the main pipe body and the auxiliary pipe body are respectively provided with a plurality of grout overflow holes, the grout overflow holes are arranged at the top of the pipe body and are longitudinally arranged along the pipe body at intervals, grout can overflow from one direction, air is discharged during grouting, the grout overflow holes are attached to the waterproof plate at the top of the pipe body, and the grout overflow holes can be prevented from being blocked during pouring of secondary lining concrete; the main pipe and the auxiliary pipe are not provided with the grout overflow holes within a certain length range away from the pipe orifice, so that direct overflow of grout at the pipe orifice is prevented, and effective grouting cannot be realized; and through setting up fixed plate and slip casting joint, be convenient for fix main pipe and auxiliary pipe during the use to and be convenient for be connected with the slip casting machine pipeline, adopt this two lining vault slip casting pipe subassemblies, can guarantee that the vault slip casting is full, prevent to produce the vault and come to an empty because of the slip casting is not tight.
In the embodiment, the main pipe 1 and the secondary pipe 2 are made of phi 20 PVC pipes or PPR pipes, and the main pipe and the secondary pipe are buried at the positions 10cm away from the center line of the vault. For the convenience of grouting connection, the end heads of the main pipe and the auxiliary pipe are provided with an exposed length of 20cm, the exposed length exceeds the end head 11 of the two lining, for example, a lining of 12 meters is taken, the length of the main pipe is equal to the length of a trolley, the exposed length is 1200+20 and 1220cm, and the length of the auxiliary pipe is equal to the length of the trolley, multiplied by 2/3, and the exposed length is 1200 × 2/3+20 and 820 cm.
In this embodiment, the grouting joint 4 is further provided with a grout stop valve 5. By arranging the grout stop valve, the main pipe and the auxiliary pipe can be conveniently plugged after grouting is finished. The outer diameter of the grouting joint is about 18mm, a 1mm gap is formed between the grouting joint and a phi 20 PVC pipe or PPR pipe (the inner diameter is 19mm), the grouting joint is sleeved by utilizing the adsorption fastening fixing principle of an embedded section, and meanwhile, a 135-degree included angle is adopted for expansion of an operation space, so that the operation space is ensured to meet the requirements of site construction.
In this embodiment, the aperture of the slurry overflow hole is 5-8 mm, and the pitch of the holes is 50-80 cm. The slurry overflow hole adopts the arrangement scheme, so that pressure transmission in the pipe can be ensured during grouting. The slurry overflow hole is upward, the waterproof plate is closely attached, the slurry overflow holes are distributed in a straight line shape, the slurry overflow holes are buried at intervals, the slurry overflow holes are arranged in a segmented mode, namely, the drilling section is an 2/3 section of the whole length of the lining trolley, namely, the rear section of the front end 1/3 of the pipe body, a lining of 12 meters is taken as an example, the main pipe is 1200 multiplied by 2/3 which is 800cm, and the auxiliary pipe is 1200 multiplied by 1/3 which is 400 cm.
In this embodiment, the main pipe 1 and the auxiliary pipe 2 do not have a grout overflow hole within a length range of 300-500 cm from the pipe orifice, so that the grout can be prevented from directly overflowing from the pipe orifice and can not be effectively injected.
In this embodiment, the fixing plate 3 is the same as the waterproof plate, and the distance between the fixing plates is 30-50 cm. By adopting the fixing plate, the fixing plate and the waterproof plate are convenient to perform hot melting welding fixation.
In this embodiment, the pipe tails of the main pipe 1 and the auxiliary pipe 2 are both provided with a baffle 6, and the baffle is in contact with the end part of the pipe tail in a fitting manner. Specifically, the baffle 6 at the tail parts of the main pipe 1 and the auxiliary pipe 2 is fixed by adopting a waterproof plate block of 15 multiplied by 15cm in a spot welding four-point mode, the periphery of the baffle is not sealed, and the waterproof plate is tightly pressed and attached to the tail end of the pipe body by the aid of the second lining concrete due to flexibility of the waterproof plate, so that the pipe is prevented from being blocked due to the fact that the concrete enters the pipe; when the main pipe and the auxiliary pipe are used for grouting, the pressure of the slurry can enable the waterproof plate and the tail end of the pipe body to generate a gap, and the slurry outflow requirement is met. The baffle is arranged at the pipe tail of the main pipe and the auxiliary pipe, so that the blockage caused by the fact that a large amount of concrete enters the pipe from the two linings is prevented, and the slurry can seep out along the joint gap between the baffle and the pipe tail.
The two-lining vault grouting pipe assembly in the embodiment is used for grouting construction and comprises the following steps:
A. laying geotextile and waterproof boards 9 after primary support 8 of the tunnel is finished, and burying a two-lining vault grouting pipe assembly at the vault before lining construction;
B. pouring secondary lining concrete 10 into the secondary lining trolley steel mould;
C. when the concrete at the vault is initially set, pressure grouting is firstly carried out through the main pipe 1, pressure is maintained for 5min after grout overflows from the auxiliary pipe 2, and the auxiliary pipe 2 is changed for secondary grouting.
According to the method, the two-lining vault grouting pipe assembly is buried at the vault before lining construction, then two-lining concrete is poured, when the concrete at the vault is initially set, pressure grouting is firstly carried out through the main pipe, pressure is maintained for 5min after grout escapes from the auxiliary pipe, the auxiliary pipe is changed for secondary grouting, the vault grouting can be further ensured to be full, and vault emptying caused by untight grouting is prevented.
In this embodiment, the initial setting time of the concrete at the vault part is determined according to a construction site test. According to the initial setting time of the concrete at the vault part determined by the field test, the vault grouting time can be better mastered, and the grout filling effect and the bonding effect with the secondary lining concrete can be favorably ensured.
In this embodiment, in the test of the initial setting state of the vault concrete in the field, after the concrete body is plastered and calendered (a steel ball with a mass of phi 75mm is lightly placed on the concrete surface to be kept still for 3 minutes, then the steel ball is taken up, the indentation on the concrete surface is measured, when the diameter is smaller than the phi 30mm steel ball or the index finger is used to press the concrete surface with normal force, no obvious imprint appears), the following results are obtained: the initial setting time of concrete at the arch crown part of the lining is about 1 hour different from the initial setting time of the conventional lining concrete, and the actual initial setting time is 7 hours, so that the time for grouting the arch crown with the mold is set to be the 7 th hour after the concrete of the two lining arches is poured, namely, the grouting is carried out at the theoretical initial setting time point of the concrete, the grouting operation is finished within 1 hour (actually, the grouting operation is generally finished within 30 minutes), and the longest time is not more than 10 hours.
In the embodiment, the slurry is prepared from cement, water, an expanding agent and a water reducing agent according to a proportion. By adding the expanding agent into the slurry, the calculus rate can be improved on the premise of ensuring the strength index, and the defect of secondary grouting caused by new gaps generated by the solidification volume shrinkage of the slurry is avoided; meanwhile, by adding the water reducing agent, on the premise that the water-cement ratio is not changed, the water reducing agent increases the dispersion degree of cement particles, accelerates the hydration of the cement particles, changes partial free water into bound water, increases the dispersion capacity of the cement particles, and reduces the consistency of the slurry, thereby being beneficial to improving the fluidity of the slurry.
In this embodiment, the slurry is prepared from the following components in parts by weight: water: swelling agent: the water reducing agent is 1:0.4:0.1:0.01, and the allowable deviation range is as follows: water: swelling agent: the water reducing agent is 1: 0.38-0.40: 0.10-0.12: 0.01-0.012. Wherein the free expansion ratio of the expanding agent is 0.3-2%, because the strength index is influenced by too high expansion ratio, the upper limit is defined as 2%. The micro-expansion agent is preferably 12% of the cement weight, the maximum content is not more than 15%, and the prepared micro-expansion cement paste does not shrink. The cement is preferably P.O.42.5 ordinary portland cement. The slurry is required to be continuously stirred, the cement consumption is strictly monitored in the stirring process, and the consistency of the slurry is ensured. The water cement ratio of the cement paste prepared by the mixing ratio is 0.4, and the shrinkage rate of the solidified cement paste is only 3.8%.
In this embodiment, the grouting pressure is determined as follows: the density of water is 1000Kg/m3(ii) a Portland cement density 3100Kg/m3(ii) a Mixing according to the proportion of W/C being 0.4: 1m31000Kg required cement weight: 1000/0.4-2500 Kg; the volume occupied by 2500Kg of cement is as follows: 2500Kg/3100Kg/m3＝0.8m3(ii) a Preparing 0.4 water-cement ratio, the total volume of 1000Kg of water and 2500Kg of cement is 1+ 0.8-1.8 m3(ii) a The density of the cement paste is: (1000+2500)/1.8 ═ 1.9375g/cm3Therefore, the volume of the slurry stirred by 1000Kg of cement is as follows: (1000+400)/1.9375 ═ 0.722.6m3. When the maximum height of the top longitudinal grouting pipe of the two liners from the filling surface of the inverted arch is 10 m, the pumping cement slurry pressure P1 is equal to rho GV (1.9375 multiplied by 10) is equal to 0.19375 Mpa. Meanwhile, when the test pressure of the connecting welding line according to the waterproof board is 0.25Mpa, the maximum value of the backfill grouting pressure of the two lining arches is not more than P2The actual slurry outlet pressure of the grouting machine is P1+ P2 and is approximately equal to 0.5Mpa when the pressure is 0.2Mpa (required by Q/CR9604-2015 specification).
In the embodiment, before grouting, a railway tunnel single-line section design contour diagram given according to a design drawing can be used, contour spaces formed by 1cm, 2cm, 3cm and 4cm at the topmost part of the vault are theoretically calculated, and theoretical grouting amount and cement consumption under different water-cement ratios are reversely calculated according to the space size. When the effective dosage of the cement exceeds the theoretical calculation value, grouting should be stopped immediately, and reasons are analyzed.
In this embodiment, in the grouting process, the main pipe 1 is grouted first, after the grouting pressure of the main pipe 1 is continuously increased to 0.7Mpa or grout overflows from the orifice of the secondary pipe 2, the main pipe 1 is blocked, the secondary pipe 2 is replaced for grouting, after the secondary lining end head 10 is grouted, the secondary pipe 2 is blocked, and grouting is stopped.
In the embodiment, in the process of grouting on the arch crown site, slurry is prepared in advance, the two stirring barrels work alternately, each stirring barrel takes 50Kg of cement as a pulping unit to carry out directional calibration, the slurry prepared from 50Kg of cement in one barrel is small in preparation amount and convenient to prepare, the phenomenon that the slurry is prepared from nonstandard slurry is avoided, the slurry in the other barrel starts to be prepared in the using process of the slurry in the one barrel, the uninterrupted operation and the miniaturization operation are realized, and the material waste caused by space occupation and excessive slurry is avoided.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the principles of the present invention should be included within the scope of the present invention.
Claims (6)
1. The two-lining vault grouting pipe assembly is characterized by comprising a main pipe and an auxiliary pipe, wherein the main pipe and the auxiliary pipe are arranged in parallel at intervals, pipe orifices are parallel and level, the length of the main pipe is matched with the length of each ring of lining, the length of the auxiliary pipe is two thirds of the length of the main pipe, a plurality of grout overflow holes are formed in the pipe bodies of the main pipe and the auxiliary pipe, the grout overflow holes are formed in the top of the pipe bodies and are longitudinally arranged along the pipe bodies at intervals, the main pipe and the auxiliary pipe are not provided with the grout overflow holes within a certain length range away from the pipe orifices, the two-lining vault grouting pipe assembly further comprises a plurality of fixing plates for fixing the main pipe and the auxiliary pipe, the fixing plates are located at the bottom of the pipe bodies and are longitudinally arranged along the pipe bodies at intervals, and the pipe orifices of the.
2. A two-lined vault grouting pipe assembly as claimed in claim 1, wherein a grout stop valve is also provided on said grouting joint.
3. The double-lined vault grouting pipe assembly of claim 1, wherein the aperture of the grout overflow hole is 5-8 mm, and the pitch of the holes is 50-80 cm apart.
4. The secondary liner vault grouting pipe assembly of claim 1, wherein said primary and secondary pipes are free of grout holes within a length of 300-500 cm from the nozzle.
5. The double-lined vault grouting pipe assembly of claim 1, wherein the fixing plates are the same as the waterproof plate material, and the distance between the fixing plates is 30-50 cm.
6. The secondary liner dome grouting pipe assembly of claim 1, wherein a baffle is provided at the pipe end of the primary pipe and the secondary pipe, the baffle contacting the end of the pipe end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921271745.6U CN210317339U (en) | 2019-08-07 | 2019-08-07 | Two lining vault slip casting pipe subassemblies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921271745.6U CN210317339U (en) | 2019-08-07 | 2019-08-07 | Two lining vault slip casting pipe subassemblies |
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| Publication Number | Publication Date |
|---|---|
| CN210317339U true CN210317339U (en) | 2020-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921271745.6U Expired - Fee Related CN210317339U (en) | 2019-08-07 | 2019-08-07 | Two lining vault slip casting pipe subassemblies |
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| CN (1) | CN210317339U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110359932A (en) * | 2019-08-07 | 2019-10-22 | 西南石油大学 | One kind two serves as a contrast vault slip casting tube assembly and its grouting construction method |
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2019
- 2019-08-07 CN CN201921271745.6U patent/CN210317339U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110359932A (en) * | 2019-08-07 | 2019-10-22 | 西南石油大学 | One kind two serves as a contrast vault slip casting tube assembly and its grouting construction method |
| CN110359932B (en) * | 2019-08-07 | 2022-07-19 | 西南石油大学 | Two-lining vault grouting pipe assembly and grouting construction method thereof |
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Inventor after: Zhang Xinshang Inventor after: Hu Lipeng Inventor after: Qu Honglue Inventor after: Liu Zheyan Inventor after: Guo Deping Inventor after: Jin Liqiang Inventor after: Zhang Xiaolong Inventor after: Fan Xiaojun Inventor after: Li Bowen Inventor after: Wu Kunming Inventor before: Qu Honglue Inventor before: Hu Lipeng Inventor before: Liu Zheyan Inventor before: Zhang Xinshang Inventor before: Guo Deping Inventor before: Jin Liqiang Inventor before: Zhang Xiaolong Inventor before: Fan Xiaojun Inventor before: Li Bowen Inventor before: Wu Kunming |
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Effective date of registration: 20210913 Address after: Yunnan construction engineering development building, 188 Linxi Road, information industry base, Kunming Economic and Technological Development Zone, 650000 Patentee after: YUNNAN INFRASTRUCTURE INVESTMENT Co.,Ltd. Patentee after: SOUTHWEST PETROLEUM University Patentee after: SOUTHWEST JIAOTONG University Address before: 610500, Xindu Avenue, Xindu District, Sichuan, Chengdu, 8 Patentee before: SOUTHWEST PETROLEUM University |
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