CN103968186A - Repair construction method for water supply pre-stressed concrete cylinder pipe - Google Patents
Repair construction method for water supply pre-stressed concrete cylinder pipe Download PDFInfo
- Publication number
- CN103968186A CN103968186A CN201410160776.XA CN201410160776A CN103968186A CN 103968186 A CN103968186 A CN 103968186A CN 201410160776 A CN201410160776 A CN 201410160776A CN 103968186 A CN103968186 A CN 103968186A
- Authority
- CN
- China
- Prior art keywords
- hole
- interior lining
- lining panel
- cover plate
- water supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
- F16L55/17—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose
- F16L55/172—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose the ring, band or sleeve being tightened by a tangentially arranged threaded pin and a nut
Abstract
The invention provides a repair construction method for a water supply pre-stressed concrete cylinder pipe. According to the damage situations of the pre-stressed concrete cylinder pipe, the construction principle of combination of steel plate repair welding and specialized steel plate saddle fixing is adopted, firstly, preparation before mounting is carried out, namely a site working plane is excavated, and a sample plate is made according to the shape of a hole opening of a pipe water leakage point, then interior lining panels are mounted, screw rods, sealing rubber rings and cover plates are mounted, then the hole opening is repaired, an outer pipe core is repaired, pipe body reinforcing is finally carried out. Construction can be carried out without water supply cutoff, pipes can be repaired rapidly, losses of water and inconvenience brought to users by water supply cutoff can be reduced to the maximum extent, and the repair construction method is applied to the reinstatement work of water supply pre-stressed concrete cylinder pipes under building or built water supply pre-stressed concrete cylinder pipes.
Description
Technical field
The invention belongs to water pipe first-aid repairing engineering field, particularly a kind of water supply Prestressed concrete cylinder pipe method for repairing and constructing, is applicable to building or the reinstatement works of built water supply Prestressed concrete cylinder pipe.
Background technique
Water supply Prestressed concrete cylinder pipe is owing to being squeezed or construction infection causes breakage.The piping failure reparation of constructing not in time, not only causes water resource waste, to water undertaking, brings economic loss, also can affect the normal operation of other industry, makes troubles to resident's normal life.Also may there is secondary disasters such as landslide, traffic congestion, bring very large impact to people's life.
In the prior art, the reparation of water supply Prestressed concrete cylinder pipe is generally after employing is cut off the water, to change the restorative procedure of pipeline, this method construction period is long, engineering work load is large, engineering cost is high, and can cause the waste of water resources and to user, bring life inconvenience because cutting off the water.
Summary of the invention
In order to overcome above-mentioned defect of the prior art, the invention provides a kind of water supply Prestressed concrete cylinder pipe method for repairing and constructing, adopt special-purpose interior pading plate welding, the construction that additional saddle is repaired, the construction of can not cutting off the water, pipe-repairing, can reduce the loss of water and the inconvenience that user is cut off the water and brought to greatest extent fast.
The present invention is by the following technical solutions:
Water supply Prestressed concrete cylinder pipe method for repairing and constructing, is characterized in that, comprises the following steps:
(1) excavation site work surface, by pipe leakage point cavity entrance shape, carry out model: on set saddle, cut out cavity entrance shape, at hole, cover the thick rubber plate of 10mm around, saddle is sling and is arranged on place, hole with crane, install successively anchor ear, preliminary pretension;
(2) interior lining panel is installed: interior lining panel adopts 20mm Plate Steel, is rolled in advance the radian consistent with Prestressed concrete cylinder pipe internal diameter, by cavity entrance shape, has cut an interior lining panel, and the narrowest place of interior lining panel is also narrower than interior layer concrete hole the widest position; A channel-section steel support is installed above hole, is welded two hangers on interior lining panel, with rope, hitch interior lining panel, the narrowest place of interior lining panel is put into pipe along the maximum direction of hole length, half-twist, makes interior lining panel be close to inner tube wall, seals whole hole;
(3) screw rod, watertight rubber circle, cover plate are installed: watertight rubber circle is positioned over to steel cylinder hole periphery; Cover plate is rolled into the radian consistent with steel cylinder in advance, big or small than the large 50mm of steel cylinder hole periphery, and on the cover board offers screw hole, at interior lining panel relevant position weldering M20 Lengthened bolt; At interior lining panel center welding M32 screw rod; M32 screw rod is through cover plate;
(4) repair hole: in the pit between steel cylinder and interior lining panel, fill up mortar, and stamp polysulfide sealant at watertight rubber circle and steel cylinder hole surface of contact, cover plate is down compressed, tightens the bolt between cover plate and interior lining panel, make steel cylinder, watertight rubber circle, cover plate three sealing;
(5) repair outer tube core: the channel-section steel support that removes top, hole, in cover plate outside, fill out pea gravel concreten, the steel plate originally cutting off on saddle is refilled to original position, before benefit, first hold groove successfully, then by welding by one side, weld, tighten the bolt and nut in saddle and anchor ear place, tighten M32 bolt and nut, prescind unnecessary screw rod;
(6) body is reinforced: body damaged position is installed to one section of body bottom concreting of saddle, after water flowing checks ne-leakage again, earthing is filled and led up.
Further, step 1) rubber plate in is laid one week along hole hoop, longitudinally exceeds hole 350mm left and right, and cuts out cavity entrance shape.
In step (3), in the outside of cover plate, be also provided with minor flaps.
The present invention is according to Prestressed concrete cylinder pipe damaged condition, adopt the fixing Construction Principle of the additional special steel plate saddle of steel plate soldering, first (the excavation site work surface of the preparation before installing, by pipe leakage point cavity entrance shape, carry out model), interior lining panel is installed again, screw rod, watertight rubber circle, cover plate are installed, then repair hole, repair outer tube core, finally carry out body reinforcing.The construction of can not cutting off the water, is applicable to building or the reinstatement works of built water supply Prestressed concrete cylinder pipe.
The present invention has the following advantages:
1), shorten the construction period, improved efficiency of construction.Compare with the construction of cutting off the water, the inventive method can be saved 15-20 hour.
2), improved construction safety civilized construction level, avoided the materials such as sand, stone, brick stacking, mix and stir place, reduce the security implication of construction to resident living and traffic.
3), reduced cost.Compare with the replace tubes of cutting off the water, general replace tubes needs whole will replacing, and this engineering method only need be burn-on leakage point with steel plate, and additional anchor ear is fixed, and can save fund, has reduced engineering cost.
Accompanying drawing explanation
Fig. 1 is construction flow chart of the present invention.
Fig. 2 A is saddle install schematic diagram (transverse section).
Fig. 2 B is saddle install schematic diagram (longitudinally).
Fig. 3 A is interior lining panel scheme of installation (transverse section).
Fig. 3 B is interior lining panel scheme of installation (longitudinally).
Fig. 4 is screw rod, watertight rubber circle, cover plate scheme of installation.
Fig. 5 A is polysulfide sealant setting position schematic diagram.
Fig. 5 B repairs hole schematic diagram (transverse section).
Fig. 5 C repairs hole schematic diagram (longitudinally).
Fig. 6 A, 6B revise outer tube core schematic diagram.
Fig. 7 is that body is reinforced schematic diagram.
Reference character: 1-saddle; 2-rubber plate; 3-M24 high-strength bolt nut; 4-anchor ear; 5-interior lining panel; 6-channel-section steel support; 7-cover plate; 8-M32 screw rod; 9-watertight rubber circle; 10-bi-component polysulfide sealer; 11-pea gravel concreten; 12-concrete; 13-hanger; 14-minor flaps; 15-M20 Lengthened bolt; 16-steel cylinder; The steel plate originally cutting off on 17-saddle; 18-M32 nut.
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiment of the present invention is described in further detail.
Embodiment
Embodiment 1
Construction flow chart of the present invention as shown in Figure 1.First the preparation before installing (excavation site work surface is carried out model by pipe leakage point cavity entrance shape), then interior lining panel is installed, screw rod, watertight rubber circle, cover plate are installed, then repair hole, repair outer tube core, finally carry out body reinforcing.
Method of construction and key points for operation:
1, preparatory work before installation.Mainly contain two aspects:
(1) excavation of field operation face.Before excavation, should grasp underground utility and periphery structure situation, and carry out protection.Excavating road should be according to original road structure and site environment situation, determines to excavate method, select applicable facility and excavation scope; Operation area should be delimited in scene, establish safety sign.
(2) by cavity entrance shape, carry out model.: at set saddle 1(δ 16) on cut out cavity entrance shape, at hole, around cover the thick rubber plate 2 of 10mm, rubber plate 2 is laid one week along hole hoop, longitudinally exceeds hole 350mm left and right, and cuts out cavity entrance shape.Saddle 1 use crane is sling and is arranged on place, hole, install successively anchor ear 4(δ 14), preliminary pretension.As shown in Figure 2 A and 2B.
2, interior lining panel 5 is installed.Interior lining panel 5 adopts 20 Plate Steels, is rolled in advance the radian consistent with Prestressed concrete cylinder pipe internal diameter, by cavity entrance shape, has cut an interior lining panel, and the narrowest place of interior lining panel is also narrower than interior layer concrete hole the widest position; A channel-section steel support 6 is installed above hole, is welded two hangers 13 on interior lining panel 5, with rope, hitch interior lining panel, the narrowest place of interior lining panel is put into pipe along the maximum direction of hole length, half-twist, makes interior lining panel be close to inner tube wall, seals whole hole.As shown in Fig. 3 A and 3B.
3, screw rod, rubber ring, cover plate are installed.By watertight rubber circle 9(Φ 20) be positioned over steel cylinder 16 hole peripheries; Cover plate 7 (δ 12 steel plates) is rolled into the radian consistent with steel cylinder 16 in advance, big or small than the large 50mm of steel cylinder 16 hole periphery, and offers screw hole on cover plate 7, at interior lining panel 5 relevant positions weldering M20 Lengthened bolts 15; At interior lining panel center welding M32 screw rod 8; M32 screw rod 8 is through cover plate 7.The outside of cover plate 7 is also provided with minor flaps 14 (δ 12 steel plates).As shown in Figure 4.
4, repair hole.In the pit between steel cylinder 16 and interior lining panel 5, fill up mortar, and stamp polysulfide sealant 10 at watertight rubber circle 9 and steel cylinder 16 hole surface of contact (after cleaning out and drying with blowtorch), cover plate 7 is down compressed, tightens the bolt 15 between cover plate and interior lining panel, steel cylinder 16, watertight rubber circle 9, cover plate 7 threes are sealed completely.As shown in Fig. 5 A, 5B, 5C.
5, repair outer tube core.Remove the channel-section steel support 6 of top, hole, in cover plate 7 outsides, fill out pea gravel concreten 11, the steel plate 17 originally cutting off on saddle is refilled to original position, before benefit, first hold groove successfully, then by welding by one side, weld, tighten the M24 high-strength bolt nut 3 in saddle and anchor ear place, tighten M32 screw rod 8 and nut 18, prescind unnecessary screw rod.As shown in Fig. 6 A, 6B.
6, body is reinforced.Body damaged position is installed to one section of body bottom concreting 12 of saddle, until body is more than 180 °, 180 ° of bodys are also good with concrete protective with upper part, and after water flowing checks ne-leakage again, earthing is filled and led up.As shown in Figure 7.
Quality control
While 1, constructing, in strict accordance with < < code for construction and acceptance of water supply and sewerage pipeline engineering > > (GB 50268-2008), carry out.Welded pipe line is processed and should be repaiied mouth, back chipping.
2, construction is used in producing all raw material, semifinished product all should provide work certificate, Test data etc. as requested.
3, the welding requirements of pipeline must meet the requirement of national current standard < < field apparatus, industy pipe welding engineering construction standard GB50236 > >, < < field apparatus, industy pipe welding engineering construction quality acceptance specification > > GB50683.
4, the chemical composition of welding rod, mechanical strength should match with mother metal, and welding rod quality should meet the regulation of national current standard < < carbon steel > > GB/T5117 and < < low-alloy welding rod > > GB/T5118.Welding rod should be dried.
5, backfill must not adopt mud, rubbish, and must not carry stone, brick etc. secretly with the lump object of corner angle.
Safety measure
1, repairing department should, according to peripheral path, vehicle and the pedestrian needs of coming in and going out, rationally delimit construction operation control zone.
2, on motor way, construction operation control zone is arranged and should be determined according to traffick type and the speed of a motor vehicle size of institute closed area, the indicative marks such as circuit that reasonably detour are set, reduce as far as possible the impact on road passage capability, reduce and incur loss through delay, improve construction area Security.
3, on motor way, construction arranges relevant canalization facility and sign by the traffic control requirement of operation control zone.Night work should have enough lighting installation, and warning light signal is set.
4, operation area scope can not arbitrarily not removed, be changed setting position, expand or dwindle to the safety installations that arranged before fulfiling assignment.Must pass through operating area with clear and definite method guided vehicle driver and pedestrian, all safety installations will, in high-visible and good state, be guaranteed the validity of operation area safety control.
5,, when busy section of town and hazardous environment operation, should appointment person carry out traffic safety monitoring and safeguard on-the-spot order.
6, in repairing area of influence, there is potential safety hazard in pipeline already present or that occur in repairing process and structure, should adopt an effective measure, and effectively reinforce.
7, the cubic metre of earth and stone stowed location of excavation must not affect construction and traffic.
Environmental practice
1, low noise equipment should be used in job site, reduces surrounding environment influence.
2, first-aid repair construction should be taked dust prevention.
3, the raceway groove within the scope of construction area, ground should be without rubbish, arbitrarily throwing construction material, roach, old material and other foreign material.Mud must not arbitrarily discharge.
4, after Practical Completion, should remove in time interim first-aid repair construction facility, place cleaning, recovers vegetation and greening, redeck facility.
5, reasonable arrangement does not affect road, traffic and resident's trip as far as possible, and strict control noise does not affect resident's live and work as far as possible.
6, remaining soil is cleared appearance according to pertinent regulations in time.
The water supply Prestressed concrete cylinder pipe method for repairing and constructing that adopts the present invention to prevent, the duration is short, after reparation, without any leakage infiltration phenomenon, guarantee timely water supply, reduced the loss of water and the inconvenience that user is cut off the water and brought, in application to engineering practice, can obtain good economic and social benefit.
Claims (3)
1. water supply Prestressed concrete cylinder pipe method for repairing and constructing, is characterized in that, comprises the following steps:
(1) excavation site work surface, by pipe leakage point cavity entrance shape, carry out model: on set saddle, cut out cavity entrance shape, at hole, cover the thick rubber plate of 10mm around, saddle is sling and is arranged on place, hole with crane, install successively anchor ear, preliminary pretension;
(2) interior lining panel is installed: interior lining panel adopts 20mm Plate Steel, is rolled in advance the radian consistent with Prestressed concrete cylinder pipe internal diameter, by cavity entrance shape, has cut an interior lining panel, and the narrowest place of interior lining panel is also narrower than interior layer concrete hole the widest position; A channel-section steel support is installed above hole, is welded two hangers on interior lining panel, with rope, hitch interior lining panel, the narrowest place of interior lining panel is put into pipe along the maximum direction of hole length, half-twist, makes interior lining panel be close to inner tube wall, seals whole hole;
(3) screw rod, watertight rubber circle, cover plate are installed: watertight rubber circle is positioned over to steel cylinder hole periphery; Cover plate is rolled into the radian consistent with steel cylinder in advance, big or small than the large 50mm of steel cylinder hole periphery, and on the cover board offers screw hole, at interior lining panel relevant position weldering M20 Lengthened bolt; At interior lining panel center welding M32 screw rod; M32 screw rod is through cover plate;
(4) repair hole: in the pit between steel cylinder and interior lining panel, fill up mortar, and stamp polysulfide sealant at watertight rubber circle and steel cylinder hole surface of contact, cover plate is down compressed, tightens the bolt between cover plate and interior lining panel, make steel cylinder, watertight rubber circle, cover plate three sealing;
(5) repair outer tube core: the channel-section steel support that removes top, hole, in cover plate outside, fill out pea gravel concreten, the steel plate originally cutting off on saddle is refilled to original position, before benefit, first hold groove successfully, then by welding by one side, weld, tighten the bolt and nut in saddle and anchor ear place, tighten M32 bolt and nut, prescind unnecessary screw rod;
(6) body is reinforced: body damaged position is installed to one section of body bottom concreting of saddle, after water flowing checks ne-leakage again, earthing is filled and led up.
2. method of construction as claimed in claim 1, is characterized in that step 1) in rubber plate along hole hoop, lay one week, longitudinally exceed about hole 350mm, and cut out cavity entrance shape.
3. method of construction as claimed in claim 1, is characterized in that, in step (3), in the outside of cover plate, is also provided with minor flaps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410160776.XA CN103968186A (en) | 2014-04-21 | 2014-04-21 | Repair construction method for water supply pre-stressed concrete cylinder pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410160776.XA CN103968186A (en) | 2014-04-21 | 2014-04-21 | Repair construction method for water supply pre-stressed concrete cylinder pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103968186A true CN103968186A (en) | 2014-08-06 |
Family
ID=51238023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410160776.XA Pending CN103968186A (en) | 2014-04-21 | 2014-04-21 | Repair construction method for water supply pre-stressed concrete cylinder pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103968186A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482352A (en) * | 2014-12-09 | 2015-04-01 | 中国能源建设集团广东省电力设计研究院 | Restoration structure and restoration method of PCCP (prestressed concrete cylinder pipe) |
| CN110397819A (en) * | 2019-07-31 | 2019-11-01 | 南方工程检测修复技术研究院 | A kind of fracture of wire PCCP does not cut off the water outer patch Prestressed CFRP and high polymer grouting combined-repair method |
| CN110410613A (en) * | 2019-07-31 | 2019-11-05 | 南方工程检测修复技术研究院 | A kind of PCCP pipeline does not interrupt water delivery restoring and fastening method |
| CN116877827A (en) * | 2023-09-04 | 2023-10-13 | 山西八建集团有限公司 | Repair-free damaged corrugated pipe device and construction method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2662489A1 (en) * | 1990-05-25 | 1991-11-29 | Straub Federnfabrik | Pipe connector for sealing leaky pipelines |
| CN1614292A (en) * | 2004-11-26 | 2005-05-11 | 天津市水利科学研究所 | Pipeline leakage blocking device, its production and method thereof |
| CN101625061A (en) * | 2009-05-27 | 2010-01-13 | 无锡华毅管道有限公司 | Pipelining emergent repairing method of prestressing steel cylinder concrete pipe |
| CN203363529U (en) * | 2013-06-07 | 2013-12-25 | 义乌工商职业技术学院 | Concrete pipe repairing device of water supply prestress steel cylinder |
-
2014
- 2014-04-21 CN CN201410160776.XA patent/CN103968186A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2662489A1 (en) * | 1990-05-25 | 1991-11-29 | Straub Federnfabrik | Pipe connector for sealing leaky pipelines |
| CN1614292A (en) * | 2004-11-26 | 2005-05-11 | 天津市水利科学研究所 | Pipeline leakage blocking device, its production and method thereof |
| CN101625061A (en) * | 2009-05-27 | 2010-01-13 | 无锡华毅管道有限公司 | Pipelining emergent repairing method of prestressing steel cylinder concrete pipe |
| CN203363529U (en) * | 2013-06-07 | 2013-12-25 | 义乌工商职业技术学院 | Concrete pipe repairing device of water supply prestress steel cylinder |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482352A (en) * | 2014-12-09 | 2015-04-01 | 中国能源建设集团广东省电力设计研究院 | Restoration structure and restoration method of PCCP (prestressed concrete cylinder pipe) |
| CN104482352B (en) * | 2014-12-09 | 2016-06-29 | 中国能源建设集团广东省电力设计研究院有限公司 | The reparation structure of PCCP pipe and restorative procedure |
| CN110397819A (en) * | 2019-07-31 | 2019-11-01 | 南方工程检测修复技术研究院 | A kind of fracture of wire PCCP does not cut off the water outer patch Prestressed CFRP and high polymer grouting combined-repair method |
| CN110410613A (en) * | 2019-07-31 | 2019-11-05 | 南方工程检测修复技术研究院 | A kind of PCCP pipeline does not interrupt water delivery restoring and fastening method |
| CN110397819B (en) * | 2019-07-31 | 2021-11-05 | 南方工程检测修复技术研究院 | Broken wire PCCP (prestressed concrete Cylinder pipe) non-water-stop external-application prestress CFRP (carbon fiber reinforced Polymer) and high polymer grouting composite repair method |
| CN116877827A (en) * | 2023-09-04 | 2023-10-13 | 山西八建集团有限公司 | Repair-free damaged corrugated pipe device and construction method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204098065U (en) | A kind of can the precast assembly pipe gallery of stretch-draw in body | |
| CN110332409A (en) | The method of non-excavation rehabilitation drainage pipeline and dedicated stainless steel inner lining repair structure | |
| CN112663774B (en) | Construction method of unbonded prestressed large-diameter reinforced concrete thin-wall circular water tank | |
| CN103968186A (en) | Repair construction method for water supply pre-stressed concrete cylinder pipe | |
| CN104847364B (en) | A kind of shield continuous cutting pile foundation passes through residential building group construction method | |
| CN101625061B (en) | Pipelining emergent repairing method of prestressing steel cylinder concrete pipe | |
| CN103437417B (en) | Part repair structure for steel lining of drainage pipeline | |
| CN105179875A (en) | Non-excavation repairing method for deformation collapse of weak stratum drainage pipe | |
| CN107558491A (en) | A kind of underground pipe gallery and its construction method | |
| CN107816117A (en) | A kind of large-scale pressure current box culvert is not cut off the water outer restorative procedure | |
| CN203363529U (en) | Concrete pipe repairing device of water supply prestress steel cylinder | |
| CN112901207A (en) | Treatment method for collapse in tunnel during arch change of secondary lining in sulfate corrosion section of operation tunnel | |
| CN104652495B (en) | Internal support of foundation pit column and base plate node waterproof construction technology | |
| CN104405165B (en) | The assembled mixing station storage bin partition wall of a kind of repeatable utilization and construction method thereof | |
| CN202927358U (en) | A steel liner repair structure of a large-diameter concrete non-bearing pipeline fissure | |
| CN110529120B (en) | Construction method for removing invasion limiting structure by chiseling VI-level surrounding rock shallow-buried underground excavation loess tunnel | |
| CN103850162B (en) | Bridge-type combining structure pavement system and construction method thereof | |
| CN203050736U (en) | Waterproof earth pressure balance rectangular jacking pipe joint for large-section motor vehicle tunnel | |
| CN113338983B (en) | Large-pipe-diameter mud-water balance jacking pipe construction method suitable for high-water-level rock geology | |
| CN110284886B (en) | Safety prevention and control method for deep vertical shaft wall fracture | |
| CN108221715A (en) | A kind of renovation technique of bridge pavement | |
| CN203498985U (en) | Local repair structure for steel lining of exhaust pipeline | |
| CN113669083A (en) | Tunnel repairing structure based on load conversion and cap type and construction method thereof | |
| CN211370420U (en) | Quick compound tunnel inside lining of being under construction | |
| CN208251118U (en) | Slope reinforcement device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140806 |