CN106759262A - The continuous sawing grooving of ground-connecting-wall synchronously irrigates wall-forming device and construction method - Google Patents
The continuous sawing grooving of ground-connecting-wall synchronously irrigates wall-forming device and construction method Download PDFInfo
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- CN106759262A CN106759262A CN201710039366.3A CN201710039366A CN106759262A CN 106759262 A CN106759262 A CN 106759262A CN 201710039366 A CN201710039366 A CN 201710039366A CN 106759262 A CN106759262 A CN 106759262A
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- concrete
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- 238000010276 construction Methods 0.000 title claims abstract description 20
- 239000004567 concrete Substances 0.000 claims abstract description 39
- 239000002689 soil Substances 0.000 claims abstract description 31
- 238000005520 cutting process Methods 0.000 claims abstract description 18
- 238000007599 discharging Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 230000002787 reinforcement Effects 0.000 claims abstract description 5
- 238000005266 casting Methods 0.000 claims description 7
- 230000011218 segmentation Effects 0.000 claims description 6
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 238000009432 framing Methods 0.000 claims description 2
- 239000002002 slurry Substances 0.000 abstract description 8
- 239000004568 cement Substances 0.000 abstract description 6
- 230000003487 anti-permeability effect Effects 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 2
- 238000012407 engineering method Methods 0.000 description 7
- 230000010412 perfusion Effects 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000011378 shotcrete Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 210000002966 serum Anatomy 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
- E02D5/187—Bulkheads or similar walls made solely of concrete in situ the bulkheads or walls being made continuously, e.g. excavating and constructing bulkheads or walls in the same process, without joints
Abstract
Wall-forming device and construction method are synchronously irrigated the invention discloses a kind of continuous sawing grooving of ground-connecting-wall, the construction equipment includes chain saw type toolbox and shielded box, and shielded box is arranged on the side of chain saw type toolbox；Chain saw type toolbox is provided with soil-discharging device.The construction method includes to concreting section filling ultra-retardation concrete, while loose ground release soil body cut length space and being continuously replenished uninterruptedly is discharged using soil-discharging device pours concrete on rear side of shielded box.The present invention fills whole groove section and replaces a large amount of slurry coat methods of tradition, the generation of the construction waste of reduction using the loose earth for cutting.Integrally advanced forward using the lateral pressure pushing tow cutting box and shielded box of the non-curdled appearance of ultra-retardation concrete, to the steel reinforcement cage of follow-up decentralization in time in not solidified concrete in concreting section, form seamless armored concrete diaphram wall, realize that real wall body is continuous, traditional Soil-cement diaphragm wall intensity and anti-permeability are greatly improved.
Description
Technical field
The invention belongs to underground continuous wall construction technique field, more particularly to a kind of continuous sawing grooving synchronization of ground-connecting-wall
Perfusion wall-forming device and construction method.
Background technology
Current armored concrete ground-connecting-wall grooving use and manually manufacture the mud to carry out retaining wall to ensure slurry trench stability, is being poured
After having built concrete, even if a large amount of mud for displacing are reclaimed and carry out after-treatment will produce a large amount of outer rows of useless slurries needs,
It is unfavorable for that environmental protection is constructed.Ground-connecting-wall typically doubles as foundation pit enclosure structure and side wall sealing system, traditional ground-connecting-wall construction
Shi Jun carries out Division range design, even if the Construction Joint that framing construction is caused uses patch type curtain in the wall back of the body, but the seam crossing is past
Toward the multiple node that can also turn into Leakage of Foundation Pit, there is potential safety hazard after causing excavation of foundation pit.
TRD engineering methods（Trench cutting Re-mixing Deep wall method）It is generally termed " underground deep layer water
Soil stirring uniform thickness continuous wall constructing method including ", with traditional at present single shaft or multiple-drill press（SMW engineering methods）The colonnade formula cement for being formed
Soil stirring diaphragm wall is different.TRD engineering methods are realized by TRD engineering methods machine, will be equipped with the square box of cutting tool driving chain
（Cutting casing）Insertion underground, then carries out laterally propulsion grooving, while cutter chain is circulated cutting stirring, and from front end
Cutting casing head is to gunite and gases at high pressure in the base of original place so that the soil body in the base of original place enters with the cement mortar of injection
Row is sufficiently mixed, and ultimately forms uniform thickness, seamless overlap joint Soil-cement diaphragm wall.But applied using TRD engineering methods
During work, cutter chain is circulated cutting stirring, while casing head is cut to gunite in the base of original place from front end,
The mixed serum for being formed is contained within the soil of vast scale, and it is strong that this results in the traditional Soil-cement diaphragm wall for ultimately forming
Degree and anti-permeability still suffer from certain limitation, and the TRD engineering methods stake interpolation shaped steel for using at present encloses as building foundation pit side wall
Watch box system and sealing system, intensity, the limitation of rigidity due to its own are no more than 15m often appropriate only to cutting depth
Base pit engineering.
The content of the invention
The first object of the present invention is to provide a kind of continuous sawing grooving of ground-connecting-wall synchronously perfusion wall-forming device, of the invention
Second purpose is to provide a kind of uniform thickness armored concrete construction method of underground continuous wall, with solve TRD engineering methods construct to be formed it is mixed
Close slurries and be contained within the soil of vast scale, this results in traditional Soil-cement diaphragm wall intensity for ultimately forming and impermeable
Property certain limitation, it is difficult to meet problem of the building compared with the construction demand of deep basal pit.
In order to realize above-mentioned first purpose, the present invention provides a kind of continuous sawing grooving of ground-connecting-wall and synchronously irrigates into wall dress
Put, described device includes chain saw type toolbox, it also includes shielded box, the shielded box is arranged on the one of chain saw type toolbox
Side；The chain saw type toolbox is provided with soil-discharging device, for transporting to chain saw type toolbox top and discharging loose ground.
The continuous sawing grooving of ground-connecting-wall as described above of the invention synchronously irrigates wall-forming device, further, the chain saw type
Toolbox is made up of the segmentation of multiple casings, and the shielded box is made up of multiple distance pieces, and casing segmentation is fixedly connected with distance piece.
The continuous sawing grooving of ground-connecting-wall as described above of the invention synchronously irrigates wall-forming device, further, the chain saw type
Toolbox includes casing, chain, knife plate, cutter head and chain drive；The cutter head is arranged on the knife plate；Knife plate is spaced
On the chain；The chain is driven around the vertical circular flow of casing by chain drive.
The continuous sawing grooving of ground-connecting-wall as described above of the invention synchronously irrigates wall-forming device, further, the casting dress
Spaced casting bucket on chain is set to, the longitudinally cutting soil body of chain-driving cutter head, casting bucket runs to top with chain
Arranged outside row loose ground.
The continuous sawing grooving of ground-connecting-wall as described above of the invention synchronously irrigates wall-forming device, further, the casing
Length of the thickness less than knife plate；The thickness of the shielded box and the consistency of thickness of diaphram wall.
The continuous sawing grooving of ground-connecting-wall as described above of the invention synchronously irrigates wall-forming device, and further, the chain drives
Dynamic device includes hydraulic motor, reductor, driving wheel and driven pulley；Be transferred to for power by reductor drive by hydraulic motor
Wheel, chain is arranged between driving wheel and driven pulley.
In order to realize above-mentioned second purpose, the present invention provides a kind of uniform thickness armored concrete construction method of underground continuous wall,
Methods described is constructed using equipment described in as above any one, is comprised the following steps:
Step 1, the integral cutting of the soil body is carried out using the chain saw type toolbox highly equal with diaphram wall, is cut down
Groove section of the loose ground full of chain saw type toolbox both sides carries out retaining wall, in addition the face of chain saw type toolbox end（Or cutting
Face）Be also required to balance, the soil pressure of end by toolbox, by shielded box finally with not solidified ultra-retardation concrete behind
Side pressure dynamic balance.
Step 2, shielded box is soil body cut length near the front side of soil body cut surface, and the rear side relative with the side is concrete
Section is poured, is separated soil body cut length and concreting section using shielded box；
Step 3, to concreting section filling ultra-retardation concrete, by concrete lateral pressure promote chain saw type toolbox and every
Integrally travelled forward from case, while uninterruptedly discharging loose ground release soil body cut length space using soil-discharging device and being continuously replenished
Pour the concrete on rear side of shielded box；Preferably, the concrete is ultra-retardation concrete, and its final setting time is small more than or equal to 48
When；
Step 4, to the steel reinforcement cage of follow-up decentralization in time in not solidified concrete in concreting section, forms seamless reinforced concrete
Native diaphram wall.
The beneficial effects of the invention are as follows：
1st, fill whole groove section using the loose earth for cutting and replace a large amount of slurry coat methods of tradition, the construction waste of reduction
Generation, green construction beneficial to environmental protection.The inventive method excavates the soil body using chain saw type toolbox, and loose ground is full of into chain saw type
The groove section of toolbox both sides carries out retaining wall, and these loose grounds are finally removed by soil-discharging device, and the loose ground of removal can be used for applying
The other positions landfill at work scene, its intractability is significantly smaller than the intractability of useless slurry.
2nd, integrally advanced forward using the lateral pressure pushing tow cutting box and shielded box of the non-curdled appearance of ultra-retardation concrete, and
Supplement is poured in time, to the steel reinforcement cage of follow-up decentralization in time in not solidified concrete in concreting section, forms seamless reinforcing bar
Concrete underground continuous wall, realizes that real wall body is continuous, and traditional Soil-cement diaphragm wall intensity and anti-permeability are obtained
It is greatly improved.
Brief description of the drawings
By the detailed description made in conjunction with the following drawings, of the invention above-mentioned and/or other aspects and advantage will become
Become apparent from and be easier to understand, these accompanying drawings are schematical, are not intended to limit the present invention, wherein：
Fig. 1 is a kind of continuous sawing grooving of ground-connecting-wall of embodiment synchronously perfusion wall-forming device front schematic view；
Fig. 2 is a kind of continuous sawing grooving of ground-connecting-wall of embodiment synchronously perfusion wall-forming device schematic top plan view；
Fig. 3 is a kind of uniform thickness armored concrete construction method of underground continuous wall flow chart of embodiment.
In accompanying drawing, the list of parts representated by each label is as follows：
1st, chain saw type toolbox, 2, shielded box, 3, soil-discharging device, 4, casing, 5, chain, 6, cutter head, 7, driving wheel, 8, driven
Wheel, 9, the soil body, 10, concrete, 11, loose ground.
Specific embodiment
Hereinafter, the continuous sawing grooving of ground-connecting-wall of the invention is described with reference to the accompanying drawings synchronously to irrigate wall-forming device and apply
The embodiment of work method.
The embodiment recorded herein is specific specific embodiment of the invention, for illustrating design of the invention,
It is explanatory and exemplary, should not be construed as the limitation to embodiment of the present invention and the scope of the invention.Except what is recorded herein
Implement exception, those skilled in the art can also be based on the application claims and specification disclosure of that using aobvious
Other technical schemes being clear to, these technical schemes include any obvious using making for the embodiment to recording herein
The technical scheme of substitutions and modifications.
The accompanying drawing of this specification is schematic diagram, aids in illustrating design of the invention, it is schematically indicated the shape of each several part
And its correlation.Note that for the ease of clearly showing the structure of each part of the embodiment of the present invention, between each accompanying drawing
Do not drawn according to identical ratio.Identical reference marker is used to represent identical part.
Fig. 1 and Fig. 2 show that the continuous sawing grooving of the ground-connecting-wall of an embodiment of the present invention synchronously irrigates wall-forming device and applies
Work method, equipment includes chain saw type toolbox 1, and it also includes shielded box 2, and shielded box 2 is arranged on the one of chain saw type toolbox 1
Side；Chain saw type toolbox 1 is provided with soil-discharging device 3, for transporting to the top of chain saw type toolbox 1 and discharging loose ground 11.
In a kind of specific embodiment, the chain saw type toolbox is made up of the segmentation of multiple casings, and the shielded box is by multiple distance pieces
Constitute, casing segmentation is fixedly connected with distance piece.
Schematic flow sheet below in conjunction with Fig. 3 illustrates the uniform thickness armored concrete diaphram wall of an embodiment of the present invention
Construction method, method is constructed using an equipment is performed as described above, and is comprised the following steps:
Step 1, the integral cutting of the soil body 9 is carried out using the chain saw type toolbox 1 highly equal with diaphram wall, is cut down
Groove section of the loose ground 11 full of the both sides of chain saw type toolbox 1 carry out retaining wall, the face of chain saw type toolbox end in addition（Or
Cut surface）Balance is also required to, the soil pressure of end is finally mixed by shielded box by toolbox with not solidified extra retarded set behind
Solidifying earth lateral pressure balance.
Step 2, shielded box 2 is soil body cut length near the front side of soil body cut surface, and the rear side relative with the side is coagulation
Soil pours section, is separated soil body cut length and concreting section using shielded box 2；
Step 3, to concreting section filling ultra-retardation concrete 10, chain saw type toolbox is promoted by the lateral pressure of concrete 10
1 and shielded box 2 is overall travels forward, while using the uninterrupted discharge loose ground 11 release soil body 9 cut length space of soil-discharging device 3
And it is continuously replenished the concrete 10 for pouring the rear side of shielded box 2；Preferably, concrete 10 is ultra-retardation concrete, its final setting time
More than or equal to 48 hours；Using concreting section filling ultra-retardation concrete 10 chain saw type knife is provided to the pressure of shielded box 2
Has the part jacking force of case.
Step 4, to the steel reinforcement cage of follow-up decentralization in time in not solidified concrete 10 in concreting section, forms seamless steel
Reinforced concrete diaphram wall.
In a kind of preferred embodiment, chain saw type toolbox 1 includes that casing 4, chain 5, knife plate, cutter head 6 and chain drive
Dynamic device；Cutter head 6 is arranged on knife plate；Knife plate interval is arranged on chain 5；Chain 5 is driven around casing 4 by chain drive
Vertical circular flow.
In a kind of preferred embodiment, soil-discharging device 3 is spaced casting bucket on chain 5, and chain 5 is with dynamic cutter head
The 6 longitudinally cutting soil bodys 9, casting bucket runs to top with chain 5 and carries out the outer row of loose ground 11.
In a kind of preferred embodiment, the length of the thickness less than knife plate of casing 4；The thickness of shielded box 2 connects with underground
The consistency of thickness of continuous wall.It is steady to ensure cell wall that current armored concrete ground-connecting-wall grooving uses artificial manufacture mud to carry out retaining wall
It is fixed, after concrete has been poured, even if a large amount of mud recovery for displacing carries out after-treatment and will produce a large amount of useless slurry needs
Outer row, is unfavorable for environmental protection.As shown in Fig. 2 the inventive method excavates the soil body using chain saw type toolbox, loose ground 11 is filled
The groove section of the full both sides of chain saw type toolbox 1 carries out retaining wall, and these loose grounds are finally removed by soil-discharging device, and the loose ground of removal can
Other positions for job site are filled, and its intractability is significantly smaller than the intractability of useless slurry.
In a kind of preferred embodiment, chain drive includes hydraulic motor, reductor, driving wheel 7 and driven pulley
8；Power is transferred to driving wheel 7 by hydraulic motor by reductor, and chain 5 is arranged between driving wheel 7 and driven pulley 8.
Each technical characteristic of above-mentioned disclosure is not limited to disclosed and further feature combination, and those skilled in the art are also
Other combinations between each technical characteristic can be carried out according to the purpose of invention, is defined by the purpose for realizing the present invention.
Claims (8)
1. the continuous sawing grooving of a kind of ground-connecting-wall synchronously irrigates wall-forming device, and described device includes chain saw type toolbox, its feature
It is that, also including shielded box, the shielded box is arranged on the side of chain saw type toolbox；The chain saw type toolbox is provided with row
Native device, for transporting to chain saw type toolbox top and discharging loose ground.
2. the continuous sawing grooving of ground-connecting-wall according to claim 1 synchronously irrigates wall-forming device, it is characterised in that the chain
Saw formula toolbox is made up of the segmentation of multiple casings, and the shielded box is made up of multiple distance pieces, and casing segmentation is fixed with distance piece
Connection.
3. the continuous sawing grooving of ground-connecting-wall according to claim 2 synchronously irrigates wall-forming device, it is characterised in that the chain
Saw formula toolbox includes casing, chain, knife plate, cutter head and chain drive；The cutter head is arranged on the knife plate；Knife plate
Interval is arranged on the chain；The chain is driven around the vertical circular flow of casing by chain drive.
4. the continuous sawing grooving of ground-connecting-wall according to claim 3 synchronously irrigates wall-forming device, it is characterised in that the row
Native device is spaced casting bucket on chain, and the longitudinally cutting soil body of chain-driving cutter head, casting bucket is run to top with chain
Portion arranged outside loose ground.
5. the continuous sawing grooving of ground-connecting-wall according to claim 3 synchronously irrigates wall-forming device, it is characterised in that the case
Length of the thickness of body less than knife plate；The thickness of the shielded box and the consistency of thickness of diaphram wall.
6. the continuous sawing grooving of ground-connecting-wall according to claim any one of 3-5 synchronously irrigates wall-forming device, and its feature exists
In the chain drive includes hydraulic motor, reductor, driving wheel and driven pulley；Hydraulic motor will be dynamic by reductor
Power is transferred to driving wheel, and chain is arranged between driving wheel and driven pulley.
7. a kind of uniform thickness armored concrete construction method of underground continuous wall, it is characterised in that methods described utilizes claim 1-6
Equipment is constructed described in any one, is comprised the following steps:
Step 1, the integral cutting of the soil body is carried out using chain saw type toolbox；
Step 2, shielded box is soil body cut length near the front side of soil body cut surface, and the rear side relative with the side is concreting
Section, is separated soil body cut length and concreting section using shielded box；
Step 3, to concreting section filling ultra-retardation concrete, by concrete lateral pressure promote chain saw type toolbox and every
Integrally travelled forward from case, while uninterruptedly discharging loose ground release soil body cut length space using soil-discharging device and being continuously replenished
Pour the concrete on rear side of shielded box；
Step 4, to the steel reinforcement cage of follow-up decentralization in time in not solidified concrete in concreting section, forms seamless reinforced concrete
Native diaphram wall.
8. ground-connecting-wall original position according to claim 7 is loosened the soil, and framing does not walk wall forming construction method voluntarily to retaining wall, and its feature exists
In the concrete is ultra-retardation concrete, and its final setting time is more than or equal to 48 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710039366.3A CN106759262A (en) | 2017-01-19 | 2017-01-19 | The continuous sawing grooving of ground-connecting-wall synchronously irrigates wall-forming device and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710039366.3A CN106759262A (en) | 2017-01-19 | 2017-01-19 | The continuous sawing grooving of ground-connecting-wall synchronously irrigates wall-forming device and construction method |
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| Publication Number | Publication Date |
|---|---|
| CN106759262A true CN106759262A (en) | 2017-05-31 |
Family
ID=58944146
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|---|---|---|---|
| CN201710039366.3A Pending CN106759262A (en) | 2017-01-19 | 2017-01-19 | The continuous sawing grooving of ground-connecting-wall synchronously irrigates wall-forming device and construction method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107938741A (en) * | 2017-12-26 | 2018-04-20 | 中建三局集团有限公司 | A kind of rear end indented style chain saw cutting box and isolation box device |
| CN107964941A (en) * | 2017-12-26 | 2018-04-27 | 中建三局集团有限公司 | A kind of synchronous cutting casting concrete continuous walls construction equipment and its construction method |
| CN108019481A (en) * | 2017-12-26 | 2018-05-11 | 中建三局集团有限公司 | A kind of double strand chain dual drive wheel lazy-tongs that can be independently tensioned |
| CN113279415A (en) * | 2021-05-09 | 2021-08-20 | 苏州中车建设工程有限公司 | High-pressure slurry retaining wall construction method for grooving underground continuous wall |
| CN113322943A (en) * | 2021-06-11 | 2021-08-31 | 广西路桥工程集团有限公司 | Occlusive pile and construction method thereof |
| CN115162369A (en) * | 2022-05-14 | 2022-10-11 | 诚合瑞正风险管理咨询有限公司 | Layering rotary-cut grouting equipment for railway soil slope construction |
| CN116971368A (en) * | 2023-08-02 | 2023-10-31 | 安徽建筑大学 | Device and method for stress blocking construction |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107938741A (en) * | 2017-12-26 | 2018-04-20 | 中建三局集团有限公司 | A kind of rear end indented style chain saw cutting box and isolation box device |
| CN107964941A (en) * | 2017-12-26 | 2018-04-27 | 中建三局集团有限公司 | A kind of synchronous cutting casting concrete continuous walls construction equipment and its construction method |
| CN108019481A (en) * | 2017-12-26 | 2018-05-11 | 中建三局集团有限公司 | A kind of double strand chain dual drive wheel lazy-tongs that can be independently tensioned |
| CN113279415A (en) * | 2021-05-09 | 2021-08-20 | 苏州中车建设工程有限公司 | High-pressure slurry retaining wall construction method for grooving underground continuous wall |
| CN113279415B (en) * | 2021-05-09 | 2022-07-15 | 苏州中车建设工程有限公司 | High-pressure slurry retaining wall construction method for grooving underground continuous wall |
| CN113322943A (en) * | 2021-06-11 | 2021-08-31 | 广西路桥工程集团有限公司 | Occlusive pile and construction method thereof |
| CN113322943B (en) * | 2021-06-11 | 2023-02-21 | 广西路桥工程集团有限公司 | Occlusive pile and construction method thereof |
| CN115162369A (en) * | 2022-05-14 | 2022-10-11 | 诚合瑞正风险管理咨询有限公司 | Layering rotary-cut grouting equipment for railway soil slope construction |
| CN115162369B (en) * | 2022-05-14 | 2023-07-07 | 诚合瑞正风险管理咨询有限公司 | Layered rotary-cut grouting equipment for railway soil slope construction |
| CN116971368A (en) * | 2023-08-02 | 2023-10-31 | 安徽建筑大学 | Device and method for stress blocking construction |
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Application publication date: 20170531 |
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| RJ01 | Rejection of invention patent application after publication |