CN110306502A - A kind of cast-type diversion canal means of defence - Google Patents
A kind of cast-type diversion canal means of defence Download PDFInfo
- Publication number
- CN110306502A CN110306502A CN201910447653.7A CN201910447653A CN110306502A CN 110306502 A CN110306502 A CN 110306502A CN 201910447653 A CN201910447653 A CN 201910447653A CN 110306502 A CN110306502 A CN 110306502A
- Authority
- CN
- China
- Prior art keywords
- template
- connecting rope
- concrete block
- cast
- group
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B9/00—Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
- E02B9/02—Water-ways
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Revetment (AREA)
Abstract
The invention discloses a kind of cast-type diversion canal means of defences, this method, which is used, sets up template in guard plot, the pre-buried connecting rope in scene and the mode poured complete concrete block, concrete block after form removal connects to form independent protective unit by connecting rope, and multiple adjacent independent protective units are connected in turn to form monoblock type protective device.The present invention can improve guard plot flow condition, and the process for adapting to different orographic conditions, while saving on-site consolidation and wire rope handling saves man power and material, improves construction efficiency.
Description
Technical field
The present invention relates to a kind of cast-type diversion canal means of defences, are suitable for hydraulic and hydroelectric engineering field diversion canal canal
The protection at bottom.
Background technique
In hydraulic and hydroelectric engineering field, channel diversion is a kind of more commonly used diversion mode, is suitable for open in Plain
Water conservancy diversion is carried out when building hydraulic engineering on the great rivers in area.The diversion canal of plains region is often soil matrix or sand base,
Open Channel bottom is easy to be washed away sapping by high-velocity flow, and influences the stabilization of side slope, and emphasis is needed to be protected.
In diversion canal protection, it is most important that can adapt to water flow to topography variation caused by the washing away of silt.
Traditional river and open channel safeguard procedures specifically includes that riprap protection, reinforced gabion protection, mold-bagged concrete protection, hinge row
Protection etc..These safeguard procedures are commonly used in flow condition than more gentle river, or for the channel of rock foundation.And it is right
It is big in flow, flow velocity is high, the diversion canal on soil sand matter basis, safeguard procedures will adapt to the topography variation of current scour first,
Its secondary energy forms monoblock type protection flexible, and conventional safeguard procedures are difficult to meet requirement of shelter.
Based on background above, in conjunction with the advantage and disadvantage of existing open channel safeguard procedures, the present invention proposes a kind of cast-type water conservancy diversion
Open channel means of defence can adapt to water flow and wash away to canal bottom, and structure is simple, and protection effect is good, while eliminating live wire rope handling
With the process of lifting, construction efficiency is improved, is saved human and material resources.
Summary of the invention
It is an object of the invention to overcome the tune that the human cost in existing channel safeguard procedures is high, scene needs large size
It transports equipment, the disadvantages of assembled difficult, construction efficiency is low, protection effect is poor, provides a kind of for capableing of the monoblock type of cast in situs
Flexible channel protective device production method.
A kind of cast-type diversion canal means of defence of the present invention, it is characterised in that: protect scene in diversion canal
Precast concrete block, while pre-buried connecting rope is distinguished in direction in length and breadth inside the precast concrete block, the method steps are as follows:
A) scene is protected to divide protective unit region in diversion canal；
B) the levelling bed course of anti-filter is laid in each protective unit region；
C) several template groups for surrounding solid geometry shape are disposed vertically on the levelling bed course of the anti-filter；
D) pre-buried connecting rope is distinguished in direction in length and breadth inside the template group, and connecting rope is mutual by a certain number of template groups
It is concatenated；
E) casting concrete into template group；
F) concrete curing is carried out after the completion of the template group concreting；
G) form removal after concrete block curing period；
H) concrete block after form removal connects to form independent protective unit by connecting rope；
I) it is connected in turn the multiple adjacent independent protective unit to form monoblock type protective device.
Further, it is laid in the step (b) in the process of the levelling bed course of anti-filter, first in protective unit region bottom surface
Geotextiles are laid with, then, the geotextiles between the adjacent protective unit region carry out overlap joint darning.
Further, in the step (c), each template group is surrounded in parallel relatively two-by-two respectively by four pieces of templates
One cuboid, the template group and the levelling bed course of bottom anti-filter form a half-headed cube cavity, described adjacent every
A template group is spaced a distance, described on the levelling bed course of anti-filter that several template groups are evenly arranged in protective unit
There are several gateway opening shape apertures in the middle and lower part of template group.
Further, the two along the longitudinal direction piece template has two gateway opening shape apertures, institute in symmetric position respectively
The two pieces of templates stated in transverse direction have a gateway opening shape aperture in symmetric position respectively.
Further, in the step (d), each template group pre-buried good connecting rope before pouring is described each
Template group is in the pre-buried connecting rope of longitudinal direction, and the connecting rope of the longitudinal direction is across two pieces of templates in longitudinal direction
Gateway opening shape aperture, each template group are passed through in pre-buried two connecting ropes of transverse direction, the connecting rope of the transverse direction
In the gateway opening shape aperture of two pieces of templates of transverse direction.
Further, concrete block connecting rope pre-buried along the longitudinal direction is parallel to longitudinal direction central axes, described
Pre-buried connecting rope is parallel to short side direction central axes to concrete block in transverse direction, and the horizontal and vertical connecting rope will be worn
Cross the concatenated adjacent forms group of institute, pre-buried connecting rope keeps one relative to the position in template group in each template group
It causes.
Further, in the step (e), the guard plot inner template assembly finish with connecting rope it is pre-buried it is good after, mix
Solidifying native tank vehicle and the pumping machine casting concrete into template, and vibrating, pour in process of vibrating it is noted that avoiding collision
Pre-buried connecting rope.
Further, in the step (g), the size and weight of the concrete block will meet wanting for open channel anti-impact
It asks, the concrete block shape is cuboid, and template is reusable, carries out pouring for next defence area protective unit.
Further, in the step (h), the connecting rope in the independent outermost layer concrete block of protective unit is wanted
Across concrete block outer end, and the reserved centainly length for being connect with other independent protective units.
Further, in the step (i), will individually be prevented between the adjacent independent protective unit by connector
The connecting rope for the corresponding position that the shield outermost layer concrete block of unit reserves certain length is connected and fixed protects as monoblock type
Device.
The beneficial effects of the present invention are:
1, the protective unit in the present invention is cast-type unit, template can be set up in building-site, directly by concrete
Block pouring molding avoids live handling and installs the large-scale allocation and transportation equipment of concrete block needs and stack the restrictive condition in place
It is required that；In addition, artificial wire rope handling is a troublesome process since the interval between concrete block is smaller, once and place not
Enough smooth, two adjacent block concrete blocks are difficult to go through.And connecting rope of the invention is directly pre-buried is cast in concrete block
In, preformed hole and the process reeved in concrete block are avoided, construction efficiency is improved；
2, the independent protective unit in the present invention connects into flexible monoblock type protective device by connecting rope, can be in high speed
In the case that water flow causes landform to change at Open Channel bottom and washing away for side slope, flexible monoblock type protective device can be with
The variation of landform and settle, be close to landform always, guarantee that the protection of canal bottom and side slope is stablized, there is better protection effect；
3, the configuration of the present invention is simple, cast in situs is convenient, at low cost, high-efficient, saves human and material resources, can be improved and apply
Work efficiency rate.
Detailed description of the invention
Fig. 1 is the concrete block elevation after demoulding of the invention；
Fig. 2 is the concrete block side view after demoulding of the invention；
Fig. 3 is protective unit plane structure chart of the invention；
Fig. 4 is concrete block formwork for placing construction diagrams of the invention.
In figure: 1- concrete block；2- connecting rope；3- template；4- preformed hole；The levelling bed course of 5- anti-filter；6- connection
Device.
Specific embodiment
With reference to the accompanying drawing, invention is further explained.Certain hydraulic and hydroelectric engineering is bright using water conservancy diversion is excavated in advance
The mode of canal carries out water conservancy diversion, and diversion canal wanted Flood, and canal bottom is easy to be washed away to form punching hole, and then influences side slope
Problem needs to carry out special protection to canal bottom.By than choosing, flexible monoblock type protection has better protection effect, using this
Cast-type water conservancy diversion channel means of defence in invention, specific as follows:
(1) a kind of cast-type channel means of defence for diversion canal, concrete block 1 including cast in situs pour
Preceding pre-buried connecting rope 2, the anti-filter screed-coat 5 of concrete block bottom, the independent protective unit of connection connector 6.
(2) as depicted in figs. 1 and 2: the specific structure of concrete block 1 is that length is respectively a=90cm, b=40cm,
C=50cm；Concrete grade is C20 concrete 1；The 1 pre-buried connecting rope 2 in inside of concrete block, longitudinal direction pre-buried one, short side
Pre-buried two of direction, pre-buried connecting rope 2, which stretches out 1 ontology of concrete block and concrete block 1 is together in series, becomes individually protection
Unit；Connecting rope 2 in the outermost layer concrete block 1 of independent protective unit will pass through 1 outer end of concrete block, and reserved certain confession
In the length of other independent protective unit connections；Connecting rope 2 uses wirerope, and diameter 8mm, longitudinal direction connecting rope 2 is the bottom of apart from
Portion height d=12cm, longitudinal direction connecting rope 2 are parallel to the central axes of longitudinal direction, and the connecting rope 2 of short side direction is symmetrical
Distance in the side end face of the central axes two sides and longitudinal direction apart from relative close of 1 short side direction of concrete block is e=
15cm, the connecting rope 2 of short side direction are close to the lower section of longitudinal direction connecting rope 2 in vertical direction.
(3) as shown in Figure 3: according to the length of the place size at scene and connecting rope 2, dividing protective unit, determine each
A protective unit length is 50m, and width 20m, each protective unit includes several block concrete blocks 1, adjacent concrete block 1
Spacing f=10cm；Adjacent independent protective unit is horizontal and vertical respectively to be connected pre-buried wirerope 2 by connector 6
As an integral protection device.
Making and use method of the invention, includes the following steps:
1) after diversion canal excavates molding, the region protected is being needed to be laid with anti-filter geotextiles 5, anti-filter geotextiles 5 will be into
Row overlap joint is sewed and mend, and an entirety is formed.
2) 3 groups of several templates are set up in anti-filter geotextiles 5,3 groups of structures of template are as shown in Figure 4；3 groups of template by four pieces of moulds
Plate 3 is combined into, 3 thickness 1cm of template, and forms a cube cavity without top with lower part anti-filter geotextiles 5；3 groups of template surround
Cavity inside size it is consistent with 1 size of concrete block, there are certain spacing, spacing 8cm, templates 3 between 3 groups of adjacent forms
Group is evenly arranged in protective unit anti-filter geotextiles 5；The middle and lower part of template 3 offers the gateway opening type passed through for connecting rope 2
Aperture.The pre-buried connecting rope 2 in template 3 in advance, the wherein pre-buried connecting rope 2 of longitudinal direction, short side direction pre-buried two
Connecting rope 2, it is 3 groups of template concatenated that horizontal and vertical connecting rope 2 will pass through institute by the aperture of gateway opening type, and stretches out independent
The certain length of the outermost side template 3 of protective unit, facilitates the later period to splice.
3) 3 assembly of template finish with connecting rope 2 it is pre-buried it is good after, concrete tank and pumping machine pour mixed into template 3
Solidifying soil, and vibrate；Pour in process of vibrating it is noted that avoiding collision pre-buried connecting rope 2.
4) concrete block 1 persistently conserves, and demoulding is carried out after seven days, and template 3 is Ke Xunhuanliyong, carries out next protective unit
Pour.
5) after the completion of all independent protective units pour, using the company that adjacent independent protective unit is reserved of connector 6
Splicing 2 connects, and forms a flexible integral protection device.
6) it satisfies the requirements to open channel, prepares water flowing.
The present invention is not limited to the above embodiments, and the above embodiments and description only describe of the invention
Principle, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these change and change
Into all fall within the protetion scope of the claimed invention.
The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.
Claims (10)
1. a kind of cast-type diversion canal means of defence, it is characterised in that: protect in-situ precast concrete block in diversion canal
(1), while in the internal direction in length and breadth of the precast concrete block (1) distinguish pre-buried connecting rope (2), the method steps are as follows:
A) scene is protected to divide protective unit region in diversion canal；
B) the levelling bed course of anti-filter (5) are laid in each protective unit region；
C) several template (3) groups for surrounding solid geometry shape are disposed vertically on the levelling bed course of the anti-filter (5)；
D) pre-buried connecting rope (2) is distinguished in the internal direction in length and breadth of the template (3) group, connecting rope (2) is by a certain number of templates
(3) group is mutually concatenated；
E) casting concrete into template (3) group；
F) concrete curing is carried out after the completion of template (3) the group concreting；
G) form removal (3) after concrete block (1) curing period；
H) concrete block (1) after form removal (3) forms independent protective unit by connecting rope (2) connection；
I) it is connected in turn the multiple adjacent independent protective unit to form monoblock type protective device.
2. a kind of cast-type diversion canal means of defence according to claim 1, it is characterised in that: in the step (b)
In the middle process for being laid with the levelling bed course of anti-filter, geotextiles (5) first are laid in protective unit region bottom surface, it is then, described adjacent anti-
Geotextiles (5) between shield unit area carry out overlap joint darning.
3. a kind of cast-type diversion canal means of defence according to claim 1, it is characterised in that: in the step (c)
In, each template (3) group surrounds a cuboid, template (3) group by four pieces of templates (3) in parallel relatively two-by-two respectively
A half-headed cube cavity is formed with the levelling bed course of bottom anti-filter (5), adjacent each template (3) group interval is certain
Distance, several template (3) groups are evenly arranged on the levelling bed course of anti-filter (5) of protective unit, template (3) group
There are several gateway opening shape apertures in middle and lower part.
4. a kind of cast-type diversion canal means of defence according to claim 2, it is characterised in that: it is described along the longitudinal direction
Two pieces of templates (3) have two gateway opening shape apertures in symmetric position respectively, the two in transverse direction piece template (3) is respectively
There is a gateway opening shape aperture in symmetric position.
5. a kind of cast-type diversion canal means of defence according to claim 1, it is characterised in that: in the step (d)
In, each template (3) group pre-buried good connecting rope (2) before pouring, each template (3) group is in longitudinal direction pre-buried one
Root connecting rope (2), the connecting rope (2) of the longitudinal direction pass through the gateway opening shape aperture in two pieces of templates (3) of longitudinal direction,
Each template (3) group is passed through in pre-buried two connecting ropes (2) of transverse direction, the connecting rope (2) of the transverse direction in cross
To the gateway opening shape aperture of two pieces of templates (3) in direction.
6. a kind of cast-type diversion canal means of defence according to claim 4, it is characterised in that: the concrete block
(1) connecting rope pre-buried along the longitudinal direction (2) is parallel to longitudinal direction central axes, and the concrete block (1) is pre- in transverse direction
The connecting rope (2) buried is parallel to short side direction central axes, and it is concatenated adjacent that the horizontal and vertical connecting rope (2) will pass through institute
Template (3) group, each template (3) are organized interior pre-buried connecting rope (2) and are consistent relative to the position in template (3) group.
7. a kind of cast-type diversion canal means of defence according to claim 1, it is characterised in that: in the step (e)
In, guard plot inner template (3) assembly finish with connecting rope (2) it is pre-buried it is good after, concrete tank and pumping machine are to template (3)
Middle casting concrete, and vibrating, pour in process of vibrating it is noted that avoiding collision pre-buried connecting rope (2).
8. a kind of cast-type diversion canal means of defence according to claim 1, it is characterised in that: in the step (g)
In, the size and weight of the concrete block (1) will meet the requirement of open channel anti-impact, and concrete block (1) shape is rectangular
Body, template (3) is reusable, carries out pouring for next defence area protective unit.
9. a kind of cast-type diversion canal means of defence according to claim 1, it is characterised in that: in the step (h)
In, the connecting rope (2) in the independent outermost layer concrete block (1) of protective unit will pass through concrete block (1) outer end, and pre-
Stay the length centainly for connecting with other independent protective units.
10. a kind of cast-type diversion canal means of defence according to claim 1, it is characterised in that: in the step (i)
In, it is by connector (4) that the outermost layer concrete block (1) of independent protective unit is pre- between the adjacent independent protective unit
The connecting rope (2) for reserving the corresponding position of certain length is connected and fixed as monoblock type protective device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910447653.7A CN110306502B (en) | 2019-05-27 | 2019-05-27 | Cast-in-situ flow guide open channel protection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910447653.7A CN110306502B (en) | 2019-05-27 | 2019-05-27 | Cast-in-situ flow guide open channel protection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110306502A true CN110306502A (en) | 2019-10-08 |
| CN110306502B CN110306502B (en) | 2021-12-24 |
Family
ID=68075293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910447653.7A Active CN110306502B (en) | 2019-05-27 | 2019-05-27 | Cast-in-situ flow guide open channel protection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110306502B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2496918Y (en) * | 2001-05-23 | 2002-06-26 | 樊卫平 | Stay cord type preformed concrete slope-pretecting block structure |
| CN1473998A (en) * | 2002-08-05 | 2004-02-11 | 李兰英 | Reinforced lattice |
| CN1475635A (en) * | 2002-08-16 | 2004-02-18 | 李兰英 | Reinforced network and mould and method for producing same |
| CN2605301Y (en) * | 2003-03-27 | 2004-03-03 | 上海航道勘察设计研究院 | Concrete interlocked block soft configuration |
| CN201334655Y (en) * | 2008-12-25 | 2009-10-28 | 浙江省水利水电勘测设计院 | Polyamide fiber cast-in-place concrete flexible anti-scour raft |
| CN202745013U (en) * | 2012-08-02 | 2013-02-20 | 许建军 | Concrete body interlocking block soft mattress |
| CN203821306U (en) * | 2013-12-07 | 2014-09-10 | 黄靓 | Flexible anti-scour protection pad |
| CN205975499U (en) * | 2016-08-16 | 2017-02-22 | 中交第三航务工程勘察设计院有限公司 | Ecological compartment mould bag concrete protects beach structure |
| CN206521731U (en) * | 2017-03-06 | 2017-09-26 | 黑龙江省水利科学研究院 | A kind of eco-concrete hinge revetment block |
-
2019
- 2019-05-27 CN CN201910447653.7A patent/CN110306502B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2496918Y (en) * | 2001-05-23 | 2002-06-26 | 樊卫平 | Stay cord type preformed concrete slope-pretecting block structure |
| CN1473998A (en) * | 2002-08-05 | 2004-02-11 | 李兰英 | Reinforced lattice |
| CN1475635A (en) * | 2002-08-16 | 2004-02-18 | 李兰英 | Reinforced network and mould and method for producing same |
| CN2605301Y (en) * | 2003-03-27 | 2004-03-03 | 上海航道勘察设计研究院 | Concrete interlocked block soft configuration |
| CN201334655Y (en) * | 2008-12-25 | 2009-10-28 | 浙江省水利水电勘测设计院 | Polyamide fiber cast-in-place concrete flexible anti-scour raft |
| CN202745013U (en) * | 2012-08-02 | 2013-02-20 | 许建军 | Concrete body interlocking block soft mattress |
| CN203821306U (en) * | 2013-12-07 | 2014-09-10 | 黄靓 | Flexible anti-scour protection pad |
| CN205975499U (en) * | 2016-08-16 | 2017-02-22 | 中交第三航务工程勘察设计院有限公司 | Ecological compartment mould bag concrete protects beach structure |
| CN206521731U (en) * | 2017-03-06 | 2017-09-26 | 黑龙江省水利科学研究院 | A kind of eco-concrete hinge revetment block |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110306502B (en) | 2021-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109209389B (en) | Construction method for entering semi-open and semi-closed tunnel | |
| CN109487803B (en) | Assembled framework slope protection and construction method thereof | |
| CN106245544B (en) | A kind of assembled steel reinforced concrete guard wall type general channels hole of L-type | |
| CN102031784A (en) | Slope protection pile pouring and cable bolting construction method for deep foundation pit | |
| CN103912006B (en) | A kind of many pile foundation structures of assembled and undertake the construction of method | |
| CN206220354U (en) | Distribution box special precast reinforced concrete lintel and its making mould | |
| CN105256854A (en) | Excavator bucket suitable for construction of trapezoid channel and construction method | |
| CN109648696A (en) | Side slope precast lattice beam of reinforcing bar connection and preparation method thereof and construction method | |
| CN104846781A (en) | Ecological interlocking block and ecological interlocking block type slope protection construction method | |
| CN104674863A (en) | Method for reinforcing existing municipal pipe gallery within deep foundation pit excavation range | |
| CN104652371A (en) | Overflow cemented rock-fill dam established based on old dam and construction method thereof | |
| CN104328790B (en) | Cast-in-situ sprayed concrete hidden bearing platform and hidden ground beam molding bed | |
| CN108301425A (en) | Prefabricated quick mounting type lattice girder system and its construction method | |
| CN105332382B (en) | Adjacent river foundation ditch builds island cofferdam clay water stop construction method | |
| CN106988319A (en) | A kind of rapid constructing method of large deep foundation pit agent structure side wall | |
| CN207327274U (en) | A kind of water channel engineering system | |
| CN103669400A (en) | Typical construction method for prefabricated tube bank | |
| CN105756100A (en) | Basement post-pouring belt system and making method thereof | |
| CN112252302A (en) | Method for realizing split hoisting of underground continuous wall special-shaped steel reinforcement cage into groove based on BIM | |
| CN205100272U (en) | Bucket suitable for construction of trapezoidal channel | |
| CN101892664B (en) | Bored concrete pile group construction method of plastic honeycomb pipe retaining wall and honeycombed bored concrete pile | |
| CN208023601U (en) | A kind of prefabricated pile foundation support table side form of mutual buckle type | |
| CN110306502A (en) | A kind of cast-type diversion canal means of defence | |
| CN103527217B (en) | Small-curvature-radius shield tunnel duct piece under dense pile foundation environment and manufacturing method thereof | |
| CN210482313U (en) | Foundation pit supporting beam structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | 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 |