CN106480993B - Administration structure and construction method in a kind of construction exterior wall leak repairing reinforcement - Google Patents

Administration structure and construction method in a kind of construction exterior wall leak repairing reinforcement Download PDF

Info

Publication number
CN106480993B
CN106480993B CN201611121215.4A CN201611121215A CN106480993B CN 106480993 B CN106480993 B CN 106480993B CN 201611121215 A CN201611121215 A CN 201611121215A CN 106480993 B CN106480993 B CN 106480993B
Authority
CN
China
Prior art keywords
wall
exterior wall
construction
water
hand
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.)
Active
Application number
CN201611121215.4A
Other languages
Chinese (zh)
Other versions
CN106480993A (en
Inventor
刘家彬
管秀发
刘卉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Southeast University
Original Assignee
Southeast University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Southeast University filed Critical Southeast University
Priority to CN201611121215.4A priority Critical patent/CN106480993B/en
Publication of CN106480993A publication Critical patent/CN106480993A/en
Application granted granted Critical
Publication of CN106480993B publication Critical patent/CN106480993B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/56Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
    • E04B2/562Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with fillings between the load-bearing elongated members
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/56Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
    • E04B2/64Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of concrete
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00Working measures on existing buildings
    • E04G23/02Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0203Arrangements for filling cracks or cavities in building constructions

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Working Measures On Existing Buildindgs (AREA)

Abstract

The invention discloses administration structure and construction methods in a kind of construction exterior wall leak repairing reinforcement, inner surface 10~15cm thickness is cut in the inner side of outer wall of leakage first, temporary leaking water is carried out to leak location, inclined hole, outer low and inner high draining are beaten on wall for non-outer wall of basement;Clear up base, brushing cement-base infiltration crystallization;Then it is cutting in metope, at 2~5cm of edge, is pasting water expandable waterstop;Wall locations implantation reinforcing bar 5 is being cut again, is arranging distributing reinforcement;Then wall on the early strong water-tight concrete of formula is fallen using hand, groove is reserved in new and old material junction;Sealing agent is finally filled into groove after concrete final set.Administering method of the invention, which has, designs reasonable, at low cost, easy for construction, the convenient, structural strengthening of operation, and it is not necessarily to formwork, it economizes on resources, using inside governance, working security is high, solves the problems, such as exterior wall leakage now and makes the leak repairing reinforcement simultaneously of exterior wall leakage inside governance.

Description

Administration structure and construction method in a kind of construction exterior wall leak repairing reinforcement
Technical field
The present invention relates to administer in the leak repairing reinforcement of buildings waterproof leakage mending technique field more particularly to a kind of exterior walls of buildings Structure and construction method.
Background technique
Exterior wall is waterproof construction a big difficulty, and external wall leakage problems are serious in recent years, fundamentally to solve exterior wall Crack leakage problems, and considers construction safety, conveniently, administer in leak repairing reinforcement to this.Exterior wall requires in the construction process Must be conscientious careful, it is easy for causing to leak if there is construction error, current construction management is difficult to meet the requirements;Exist simultaneously After coming into operation, due to the influence of temperature change, the differential settlement of ground, the durability of material and other factors, can all it draw Outer wall cracking is played, so as to cause leakage;And the exterior wall of the treating seepage of exterior wall especially skyscraper is always to be difficult in engineering Thoroughly solve the problems, such as.
Summary of the invention
The purpose of the present invention is being directed to water leakage through exterior wall phenomenon, overcome the deficiencies in the prior art solves building and generally deposits In insoluble leakage problem, provide that a kind of exterior wall leakage inside governance, reinforcement and strengthening, adaptable and cost is relatively low, and And without administering construction and construction method in formwork, environmentally protective construction exterior wall leak repairing reinforcement.
The technical solution adopted by the present invention are as follows: administration structure in a kind of construction exterior wall leak repairing reinforcement, including it is beam (collar tie beam), stifled Leakage agent, column (constructional column), hand fall the early strong water-tight concrete of formula, implantation reinforcing bar, rubber water-proof item, construction exterior wall, cement-based penetrant Crystallization and inclined hole;
Wall part between the beam and column is divided into three layers from the outside to the core, is followed successively by construction exterior wall, cement-based penetrant knot Brilliant and hand falls formula early strong water-tight concrete;The overall thickness that the cement-base infiltration crystallization and hand fall the early strong water-tight concrete of formula is 10 ~15cm;
The cement-base infiltration crystallization pastes the rubber water-proof item of water-swellable at 2~5cm of edge;For non-underground Room wall, the construction exterior wall are equipped with inclined hole, and inclined hole is outer low and inner high;The hand falls in the early strong water-tight concrete of formula and is equipped with implantation Reinforcing bar, hand fall the gap between the early strong water-tight concrete of formula and beam, column filled with sealing agent.
Preferably, the structure type of the construction exterior wall includes masonry structure and reinforced concrete frame structure, substantially Meet current major structural types.
Preferably, the implantation reinforcing bar mode arranges distributing reinforcement, not less than 20d, (d is that reinforcing bar is straight to implantation reinforcing bar depth Diameter), structural strength can be improved with this mode.
Preferably, the aperture of the inclined hole is 6~12mm.
A kind of construction method constructing administration structure in exterior wall leak repairing reinforcement, comprising the following steps:
1), inner surface 10~15cm thickness is cut in the construction exterior wall of leakage;
2) temporary leaking water, is carried out to leak location, serious place is leaked and uses foaming agent, slight place is leaked and uses hydrophilic epoxy Resin;
3) inclined hole, outer low and inner high draining, are beaten using hole grinding machine on wall for non-outer wall of basement;
4) base, brushing cement-base infiltration crystallization, are cleared up;
5) it, is cutting in metope, at 2~5cm of edge, is pasting water-swelling rubber water bar;
6) wall segment, is cut in beam and cylindrical drill hole, injecting glue, implantation reinforcing bar, is arranged distributing reinforcement, is improved structural strength;
7), after reinforcing bar colloid solidification to be implanted, wall on the early strong water-tight concrete of formula is fallen using hand, light is received and smoothes out, new and old material Expect that groove is reserved in junction, groove falls wall on the early strong water-tight concrete of formula to be interior big outer small, using hand;
8) sealing agent, is filled into reserved groove, final exterior wall falls formula using crack closure, cement-base infiltration crystallization, hand Early strong water-tight concrete waterproof, new and old material block waterproof, non-basement using water-swellable watertight rubber item, sealing agent filling Wall, which uses, beats inclined hole from draining.
Preferably, foaming agent uses oiliness polyurethane in the step 2).
Preferably, the hand in the step 7), which falls the early strong water-tight concrete of formula, throws away upper wall at leather hard hand, upper wall is suitable Sequence: getting on, get off, and from both sides to centre, until entirely cutting area filling is full, and surrounding, there are groove, groove is interior big It is outer small.
Water-swelling rubber water bar of the present invention is pasted onto wall and chisels part surrounding.The water-swelling rubber water bar 2-3 times of dilatancy is generated after meeting water, and full of irregular surface, hole and gap all in slot, while generating huge Big contact pressure prevents from leaking, and can eliminate general elastic material because of elastic fatigue caused by excessive compression Feature, while being used cooperatively with foam water-stop, sealing agent etc., form multi layer waterproof.
The utility model has the advantages that compared with prior art, the present invention having the advantage that
(1) present invention takes inside governance mode, is not necessarily to outdoor work, highly-safe particularly with high-level structure;
(2) present invention takes non-outer wall of basement original structure to retain part sander and opens inclined hole, hole direction be it is low inside and high outside, Structure is formed from draining;
(2) present invention takes leakage closure, brushing cement base, implantation reinforcing bar, hand to fall wall on the early strong water-tight concrete of formula Method, thoroughly prevent exterior wall leakage, easy for construction, reinforcement and strengthening, adaptable and cost is relatively low;
(3) construction technology of the present invention is simple, design science, rationally, and final position wall of digging forms hand to fall formula early strong anti- Concrete match ratio reinforcing bar reinforcement waterproof is seeped, surrounding reserves groove and uses water-swellable watertight rubber item and sealing agent waterproof, non-ly Inclined hole is beaten on the outside of the exterior wall of lower room from draining, and is prevented in outlet, regulation effect is obvious, and service life is longer;
(4) construction technology of the present invention falls wall on the early strong water-tight concrete of formula using hand, it is easy for construction, without formwork, save It is material, environmentally protective;
(5) practicability of the present invention is stronger, highly-safe, easy for construction, is easy to promote.
Detailed description of the invention
Fig. 1 is structural front view of the invention;
Fig. 2 is the A-A of Fig. 1 to cross-sectional view;
Fig. 3 is the B-B direction cross-sectional view of Fig. 1.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and detailed description.
As shown in Figure 1-3, administration structure in a kind of construction exterior wall leak repairing reinforcement, including beam (collar tie beam) 1, sealing agent 2, column (constructional column) 3, hand fall the early strong water-tight concrete 4 of formula, implantation reinforcing bar 5, rubber water-proof item 6, construction exterior wall 7, cement-based penetrant knot Brilliant 8, inclined hole 9;
The inside of the construction exterior wall 7 cuts inner surface 10~15cm thickness, carries out temporary leaking water to leak location, for Non- outer wall of basement plays inclined hole 9, outer low and inner high draining on wall;Clear up base, brushing cement-base infiltration crystallization 8;Then exist It cuts in metope, at 2~5cm of edge, pastes water-swelling rubber water bar 6;Wall locations are being cut using implantation again 5 mode of reinforcing bar arranges distributing reinforcement;Hand falls wall on the early strong water-tight concrete 4 of formula, and groove is reserved in new and old material junction;Finally mixed Sealing agent 2 is filled into groove after solidifying soil final set;
The 7 suitable structures type of construction exterior wall includes masonry structure and reinforced concrete frame structure, substantially meets mesh Preceding major structural types.The construction exterior wall 7 uses inside to administer and is not necessarily to outdoor work, particularly with high-level structure, is not necessarily to room Outer operation, it is highly-safe.The implantation reinforcing bar 5, first drills, then injecting glue, and not less than 20d, (d is that reinforcing bar is straight to implantation reinforcing bar depth Diameter), structural strength can be improved with this mode.
The hand falls wall on the early strong water-tight concrete 4 of formula, and hand is fallen the early strong water-tight concrete 4 of formula and fallen in mode using artificial hand Wall, the material have micro- swollen, early strong, impervious, anti-aging, structural strengthening, it is easy for construction, without formwork, environmentally protective and collapse Degree of falling is low not to flow automatically, and can adjust first, final setting time according to the change of admixture in match ratio to be used to meet construction needs.
A kind of construction method constructing administration structure in exterior wall leak repairing reinforcement, comprising the following steps:
1), inner surface 10~15cm thickness is cut in the construction exterior wall 7 of leakage;
2) temporary leaking water, is carried out to leak location, serious place is leaked and uses foaming agent (oiliness polyurethane), leak slight place Using hydrophilic epoxy resin;
3) inclined hole 9, beaten using hole grinding machine on wall for non-outer wall of basement, outer low and inner high draining, aperture 6~ 12mm;
4) base, brushing cement-base infiltration crystallization 8, are cleared up;
5) it, is cutting in metope, at 2~5cm of edge, is pasting water-swelling rubber water bar 6;
6) wall segment, is cut in 3 drilling of beam 1 and column, injecting glue, implantation reinforcing bar 5, is arranged distributing reinforcement, is improved structural strength;
7), after reinforcing bar colloid solidification to be implanted, wall on the early strong water-tight concrete 4 of formula is fallen using hand, light is received and smoothes out, new and old material Expect that groove is reserved in junction, groove be it is interior big outer small, using hand fall wall on the early strong water-tight concrete of formula is easy for construction, operation just Victory is not necessarily to formwork;
8) sealing agent 2, is filled into reserved groove, final exterior wall is fallen using crack closure, cement-base infiltration crystallization 8, hand Formula 4 waterproof of early strong water-tight concrete, new and old material junction groove is using water-swelling rubber water bar 6, the filling envelope of sealing agent 2 Stifled waterproof, non-basement wall, which uses, beats inclined hole 9 from draining.
It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, Several improvements and modifications can also be made, these modifications and embellishments should also be considered as the scope of protection of the present invention.In the present embodiment not The available prior art of specific each component part is realized.

Claims (7)

1. administration structure in a kind of construction exterior wall leak repairing reinforcement, it is characterised in that: it is early strong anti-to fall formula including beam, sealing agent, column, hand Seep concrete, implantation reinforcing bar, rubber water-proof item, construction exterior wall, cement-base infiltration crystallization and inclined hole;
Wall part between the beam and column is divided into three layers from the outside to the core, be followed successively by construction exterior wall, cement-base infiltration crystallization and Hand falls formula early strong water-tight concrete;The cement-base infiltration crystallization and hand fall the overall thickness of the early strong water-tight concrete of formula be 10~ 15cm;
The cement-base infiltration crystallization pastes the rubber water-proof item of water-swellable at 2~5cm of edge;Non- basement wall The construction exterior wall is equipped with inclined hole, and inclined hole is outer low and inner high;The hand falls in the early strong water-tight concrete of formula and is equipped with implantation reinforcing bar, hand The gap between the early strong water-tight concrete of formula and beam, column is fallen filled with sealing agent.
2. administration structure in a kind of construction exterior wall leak repairing reinforcement according to claim 1, it is characterised in that: outside the construction The structure type of wall includes masonry structure and reinforced concrete frame structure.
3. administration structure in a kind of construction exterior wall leak repairing reinforcement according to claim 1, it is characterised in that: the implantation steel Muscle mode arranges distributing reinforcement, and implantation reinforcing bar depth is not less than 20d, and d is bar diameter.
4. administration structure in a kind of construction exterior wall leak repairing reinforcement according to claim 1, it is characterised in that: the inclined hole Aperture is 6~12mm.
5. the construction method of administration structure, special in a kind of construction exterior wall leak repairing reinforcement according to claim 1,2,3 or 4 Sign is: the following steps are included:
1), inner surface 10~15cm thickness is cut in the construction exterior wall of leakage;
2) temporary leaking water, is carried out to leak location, serious place is leaked and uses foaming agent, slight place is leaked and uses hydrophilic asphalt mixtures modified by epoxy resin Rouge;
3) inclined hole, outer low and inner high draining, are beaten using hole grinding machine on the construction exterior wall of non-outer wall of basement;
4) base, brushing cement-base infiltration crystallization, are cleared up;
5) it, is cutting in metope, at 2~5cm of edge, is pasting water-swelling rubber water bar;
6) wall segment, is cut in beam and cylindrical drill hole, injecting glue, implantation reinforcing bar, is arranged distributing reinforcement, is improved structural strength;
7), after reinforcing bar colloid solidification to be implanted, wall on the early strong water-tight concrete of formula is fallen using hand, light is received and smoothes out, new and old material knot Groove is reserved at conjunction, groove falls wall on the early strong water-tight concrete of formula to be interior big outer small, using hand;
8), fill sealing agent into reserved groove, final exterior wall using crack closure, cement-base infiltration crystallization, that hand falls formula is early strong Water-tight concrete waterproof, new and old material block waterproof, non-basement wall using water-swellable watertight rubber item, sealing agent filling It is drained certainly using inclined hole is beaten.
6. the construction method of administration structure in a kind of construction exterior wall leak repairing reinforcement according to claim 5, it is characterised in that: Foaming agent uses oiliness polyurethane in the step 2).
7. the construction method of administration structure in a kind of construction exterior wall leak repairing reinforcement according to claim 5, it is characterised in that: Hand in the step 7) falls the early strong water-tight concrete of formula and throws away upper wall at leather hard hand, upper wall sequence: gets on, get off, from both sides To centre, until entirely cutting area filling is full, and surrounding, there are groove, groove is interior big outer small.
CN201611121215.4A 2016-12-08 2016-12-08 Administration structure and construction method in a kind of construction exterior wall leak repairing reinforcement Active CN106480993B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611121215.4A CN106480993B (en) 2016-12-08 2016-12-08 Administration structure and construction method in a kind of construction exterior wall leak repairing reinforcement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611121215.4A CN106480993B (en) 2016-12-08 2016-12-08 Administration structure and construction method in a kind of construction exterior wall leak repairing reinforcement

Publications (2)

Publication Number Publication Date
CN106480993A CN106480993A (en) 2017-03-08
CN106480993B true CN106480993B (en) 2019-03-19

Family

ID=58275962

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201611121215.4A Active CN106480993B (en) 2016-12-08 2016-12-08 Administration structure and construction method in a kind of construction exterior wall leak repairing reinforcement

Country Status (1)

Country Link
CN (1) CN106480993B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106958328A (en) * 2017-03-24 2017-07-18 管秀发 A kind of prefabricated flue mending-leakage reinforced structure and construction method
CN106812265B (en) * 2017-03-24 2022-04-29 镇江市建设工程抗震和安全鉴定办公室 Roof skylight structure leakage treatment structure and construction method
CN109024926A (en) * 2018-08-03 2018-12-18 陕西理工大学 A method of for preventing and treating water leakage in building wall bodies
CN111927502A (en) * 2020-06-02 2020-11-13 神华包神铁路集团有限责任公司 Method for treating tunnel water leakage and tunnel water leakage prevention structure
CN113090060B (en) * 2021-04-02 2022-05-27 南通根博新材料科技有限公司 Self-repairing type heat insulation wallboard with crack reminding function
CN117027231B (en) * 2023-10-08 2023-12-15 河北一筑建材科技有限公司 Thermal insulation peripheral retaining wall

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06212651A (en) * 1993-01-20 1994-08-02 Tokyu Constr Co Ltd Repairing method for water leakage of reinforced concrete structure
CN203200929U (en) * 2013-03-14 2013-09-18 郑州发祥铝业有限公司 Anti-rain-leakage structure of steel plate house inclined-pipe through-wall portion
JP2015078528A (en) * 2013-10-17 2015-04-23 勝敏 大河内 Gap sealing waterproof water stop construction method of concrete structure
CN106013256A (en) * 2016-06-22 2016-10-12 中铁第四勘察设计院集团有限公司 Tenon type connector water-proof structure for side wall of concrete waist beam embedded structure
CN206360137U (en) * 2016-12-08 2017-07-28 东南大学 Administration structure in one kind construction exterior wall mending-leakage reinforcement

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06212651A (en) * 1993-01-20 1994-08-02 Tokyu Constr Co Ltd Repairing method for water leakage of reinforced concrete structure
JP2920806B2 (en) * 1993-01-20 1999-07-19 東急建設株式会社 Water leakage repair method for reinforced concrete structures
CN203200929U (en) * 2013-03-14 2013-09-18 郑州发祥铝业有限公司 Anti-rain-leakage structure of steel plate house inclined-pipe through-wall portion
JP2015078528A (en) * 2013-10-17 2015-04-23 勝敏 大河内 Gap sealing waterproof water stop construction method of concrete structure
CN106013256A (en) * 2016-06-22 2016-10-12 中铁第四勘察设计院集团有限公司 Tenon type connector water-proof structure for side wall of concrete waist beam embedded structure
CN206360137U (en) * 2016-12-08 2017-07-28 东南大学 Administration structure in one kind construction exterior wall mending-leakage reinforcement

Also Published As

Publication number Publication date
CN106480993A (en) 2017-03-08

Similar Documents

Publication Publication Date Title
CN106480993B (en) Administration structure and construction method in a kind of construction exterior wall leak repairing reinforcement
CN111594181B (en) Construction method for communicating and connecting newly-added underground excavation channel and existing station hall layer
CN105464686B (en) Multi-layer underground space curtain posture excavating construction method and supporting construction under existing facility
CN109457735A (en) A kind of concrete wall and the restorative procedure in bottom plate infiltration crack
CN205172598U (en) Pipe curtain spouts a supporting construction soon
CN107620312A (en) High hydraulic pressure precipitation well construction and hydrostatic slip casting method for blocking in a kind of Metro station excavation
CN109098213A (en) A kind of basement blocking method
CN105484269B (en) Foundation pit enclosure structure seepage prevention and treatment construction method under blasting condition
CN204080789U (en) The preparing structure of underground continuous wall width breach
CN103437351A (en) Treatment method of deviation and fracture remediation of pile body of filling pile
CN111287759A (en) Shallow-buried close-connection underground excavation tunnel construction method
CN107503362A (en) A kind of compound antiskid piling wall retaining structure and construction method suitable for reservoir stability
CN215669744U (en) Masonry structure basement seepage slip casting repair structure
CN109403333A (en) A kind of soft lower hard water rich strata deep basal pit reversed construction method
CN206143827U (en) Underground works crack repairing structure
CN114575355B (en) Soil protection construction method
CN105731978A (en) Grouting slurry for reinforcing tunnel face of jacking culvert of fine-sand layer and grouting method
CN206360137U (en) Administration structure in one kind construction exterior wall mending-leakage reinforcement
CN107100206A (en) A kind of prevention and controls of basement leakage
CN104153347B (en) Preparing structure and the construction method thereof of underground continuous wall width breach
CN101338567B (en) Construction method for underground buildings by rotary-spray shaft digging method cooperating with semi-inverse method
CN106677190A (en) Grouting construction method for underwater pebble bed foundation pit curtain
CN106939619A (en) A kind of anti-vibration for underground engineering disturbs the leak stopping reinforcement means of voids and pits
CN207905825U (en) A kind of circular cross section tunnel lining construction device three times
CN207160437U (en) A kind of prefabricated flue mending-leakage reinforced structure

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant