CN108035427A - A kind of anti-blocking anti-fall fast row's type safe manhole device - Google Patents
A kind of anti-blocking anti-fall fast row's type safe manhole device Download PDFInfo
- Publication number
- CN108035427A CN108035427A CN201810005215.0A CN201810005215A CN108035427A CN 108035427 A CN108035427 A CN 108035427A CN 201810005215 A CN201810005215 A CN 201810005215A CN 108035427 A CN108035427 A CN 108035427A
- Authority
- CN
- China
- Prior art keywords
- inspection shaft
- shaft frame
- type safe
- locating slot
- inspection
- 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
- 238000007689 inspection Methods 0.000 claims abstract description 75
- 238000000926 separation method Methods 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 229920006351 engineering plastic Polymers 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 2
- 239000012535 impurity Substances 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002352 surface water Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000012773 waffles Nutrition 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/06—Gully gratings
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
- E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
- E01F9/604—Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings
- E01F9/619—Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings with reflectors; with means for keeping reflectors clean
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
- E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
- E01F9/658—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by means for fixing
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Architecture (AREA)
- Health & Medical Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Sewage (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses a kind of anti-blocking anti-fall fast row's type safe manhole device, including the retainer ring on ground is embedded in advance（2）And it is arranged at retainer ring（2）Interior inspection well cover（3）, it is characterised in that：The inspection well cover（3）Lower section is provided with by more fence（7）The cylindric inspection shaft frame of composition（1）, inspection shaft frame（1）Medium position has been disposed radially filter grid（6）, filter grid（6）The inspection shaft frame on top（1）Offer lattice door to be opened/closed（5）, inspection shaft frame（1）Lateral wall is circumferentially angularly evenly arranged with multiple positioning guide rails（8）；The retainer ring（2）Radially inside angularly it is provided with multiple positioning pins（10）；The present invention is efficiently solved inspection shaft and is not only easily blocked in use by impurity using traditional inspection well cover, and the problem of security incident easily occurs is gone back after being washed away by current.
Description
Technical field
The present invention relates to municipal pipeline technical field of auxiliary facilities, and in particular to a kind of anti-blocking anti-fall fast row's type manhole
Device.
Background technology
Inspection shaft plays an important role in Municipal draining, but due to just being arranged only in a small number of heavy rains by well head
Water, well head are easily blocked by debris such as branch leaves usually, and bad cleaning, causes impeded drainage.It is past when displacement is larger
It is past to need to open inspection well cover, or even inspection well cover is washed away by flowing water sometimes.The inspection shaft for losing lid not only brings the hidden of traffic safety
Suffer from, also when often result in personal injury, media report a lot of personnel excessively fall the dead missing tragic events of well in recent years.To ensure the people
Masses' personal safety, gives full play to municipal drainage pipeline effect, therefore designs one kind and be easy to cleaning to prevent from blocking, can prevent personnel
The manhole to fall with Quick drainage.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of anti-blocking anti-fall fast row's type safe manhole device, the present invention is effectively
Solve inspection shaft not only easily to be blocked by impurity in use using traditional inspection well cover, and gone back after being washed away by current easy
The problem of generation security incident.
The present invention is achieved through the following technical solutions：
A kind of anti-blocking anti-fall fast row's type safe manhole device, including the retainer ring on ground is embedded in advance（2）And it is arranged at retainer ring
（2）Interior inspection well cover（3）, it is characterised in that：The inspection well cover（3）Lower section is provided with by more fence（7）What is formed is cylindric
Inspection shaft frame（1）, inspection shaft frame（1）Medium position has been disposed radially filter grid（6）, filter grid（6）The inspection shaft frame on top（1）
Offer lattice door to be opened/closed（5）, inspection shaft frame（1）Lateral wall is circumferentially angularly evenly arranged with multiple positioning guide rails
（8）；The retainer ring（2）Radially inside angularly it is provided with multiple positioning pins（10）.
Further Technological improvement plan is the present invention：
The positioning guide rail（8）Including with forming inspection shaft frame（1）Fence（7）The guide rail of parallel setting（81）, guide rail（81）On
It is provided with multiple arc hollow locating slots for being parallel to each other and laterally setting（82）, hollow locating slot（82）With guide rail（81）Interior
Track is connected.
Further Technological improvement plan is the present invention：
The arc positioning groove（82）Heavy ground locating slot is divided into from top to bottom（821）, clean locating slot（822）, it is ranked soon
Position groove（823）And lower end separation outlet（824）, clean locating slot（822）, locating slot is arranged soon（823）And lower end is isolated
Mouthful（824）Positioned at guide rail（81）Side, heavy ground locating slot（821）Positioned at guide rail（81）Opposite side.
Further Technological improvement plan is the present invention：
The retainer ring（2）Multiple installation feet are angularly provided with radially outside（9）.
Further Technological improvement plan is the present invention：
The retainer ring（2）The ring-shaped rubber pad set by inner side（11）With inspection well cover（3）Connection.
Further Technological improvement plan is the present invention：
The inspection well cover（3）With inspection shaft frame（1）Top is fixedly connected or to be flexibly connected.
Further Technological improvement plan is the present invention：
The inspection well cover（3）It is provided with multiple osculums（4）.
Further Technological improvement plan is the present invention：
The inspection shaft frame（1）Cross sectional dimensions be less than inspection well cover（3）Size.
Further Technological improvement plan is the present invention：
The retainer ring（2）The positioning pin of interior setting（10）Quantity and positioning guide rail（8）.
Further Technological improvement plan is the present invention：
The inspection shaft frame（1）Fence（7）On be provided with reflection alarming film.
Further Technological improvement plan is the present invention：
The inspection shaft frame（1）, retainer ring（2）It is made of the engineering plastics of High-strength compression resistant.
Compared with prior art, the present invention there is following obvious advantage：
First, the inspection shaft frame that the present invention uses collects the debris such as the leaf usually fallen into inspection shaft, branch, lifts inspection shaft frame opening
The lattice door of side, can conveniently clean debris prevents from blocking.
2nd, the present invention is fast to arrange locating slot to wait locating notch to realize different works by heavy ground locating slot, cleaning locating slot
Make the needs of state, while by above-mentioned locating slot the work of inspection shaft frame can be made more to stablize, so as to avoid operation error from bringing
Contingency generation.
3rd, the present invention is when opening inspection well cover inspection or inspection well cover is lost, can be by inspection shaft frame if there is personnel to fall into inspection shaft
The waffle slab at middle part is stopped, without falling into well, prevents personnel from falling.
4th, when excess surface water is more, inspection well cover can be opened and carry out draining, catch pit port causes traffic safety hidden in underwater
To suffer from, inspection shaft frame, can be mentioned draining position and stand on ground by the inspection shaft that the present invention designs, and ponding is comprehensive to be flowed rapidly into inspection shaft, and
It can prevent from being washed into inspection shaft compared with bigger material and personnel, the reflective membrane on inspection shaft frame by going out to be higher by the water surface serves as warning,
The inspection well cover of night inspection shaft arch can insert warning lamp, serve as warning at night.
5th, the ring-shaped rubber pad set between inspection well cover and retainer ring, can cushioning effect in the pressure on inspection well cover, reduce
Well lid probability of damage and reduction noise.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of the present invention；
Fig. 2 is the retainer ring structure diagram of the present invention；
Fig. 3 is the positioning guide rail structural representation of the present invention；
Fig. 4 is the routine work view of the present invention；
Fig. 5 is the cleaning view of the present invention；
Fig. 6 is the Quick drainage schematic diagram of the present invention；
Fig. 7 is the maintenance view of the present invention.
Embodiment
1-3 illustrates the technical solution of the present invention below in conjunction with the accompanying drawings：
The present invention includes the inspection well cover 3 for being embedded in the retainer ring 2 on ground in advance and being arranged in retainer ring 2, inspection shaft frame 1, retainer ring 2
It is made of the engineering plastics of High-strength compression resistant, inspection well cover 3 is provided with multiple osculums 4, and retainer ring 2 is set by inner side
Ring-shaped rubber pad 11 is connected with inspection well cover 3, and retainer ring 2 passes through 4 installation feet 9 angularly setting radially outside；Inspection well cover 3
Lower section is provided with the cylindric inspection shaft frame 1 being welded by more fence 7, and reflection alarming film, inspection shaft frame 1 are provided with fence 7
Medium position has been disposed radially filter grid 6, and the inspection shaft frame 1 on 6 top of filter grid offers lattice door 5 to be opened/closed, basement
1 lateral wall of crib is circumferentially angularly evenly arranged with the positioning guide rail 8 of 3, positioning guide rail 8 by the square tube that is simultaneously open or
Person's pipe is made, and the positioning guide rail 8 includes the guide rail 81 with forming 1 fence of inspection shaft frame, 7 parallel setting, is set on guide rail 81
There are multiple arc hollow locating slots 82 for being parallel to each other and laterally setting, hollow locating slot 82 is connected with the track in guide rail 81
Logical, arc positioning groove 82 is divided into heavy ground locating slot 821, cleans locating slot 822 from top to bottom, it is fast arrange locating slot 823 and
Lower end separation outlet 824, cleans locating slot 822, and fast row's locating slot 823 and lower end separation outlet 824 are located at 81 side of guide rail,
Heavy ground locating slot 821 is located at 81 opposite side of guide rail；3 positioning pins 10, positioning pin 10 are radially angularly provided with retainer ring 2
Clamping is matched with the open side of positioning guide rail 8.3 generally use of inspection well cover is clamped or bolted mode is pushed up with inspection shaft frame 1
Portion connects.
With reference to the course of work of the attached drawing 4-7 summary present invention：
Retainer ring 2 is embedded in cement or asphalt floor by installation foot 9, and 2 upper port of retainer ring maintains an equal level with ground, by fence frame
On 138 lower ends of positioning guide rail separation outlet 824 alignment and fixation rings 2 on 3 positioning pins 10, decline certain distance after after it is suitable
Hour hands rotate 45 degree, and fence frame 1 is sunk untill stopping, 30 degree of fence frames 1 is then rotated clockwise again and sinks completely, positioning pin
10 coincide with heavy ground locating slot 821, and inspection well cover 3 is equal with ground as shown in Figure 4.During normal use, conventional rainwater passes through row
Water hole 4 flows into inspection shaft, and filter grid 6 collects larger debris, can usually open inspection well cover 3 and check and simple fettler
Make.When debris is more, fence frame 1 is above proposed into 30 degree of rotation counterclockwise after certain distance, then on another mistake when mentioning half height
Hour hands rotate 30 degree, and positioning pin 10 coincide with cleaning locating slot 822, and filter grid 6 maintains an equal level with ground, as shown in figure 5, opening grid
Column door 5 can be cleaned conveniently, and cleaning finishes reverse operating and puts back to original position.When excess surface water is deeper, bottom will be mentioned on fence frame 1
30 degree of rotation counterclockwise behind portion, makes positioning pin 10 and fast row's locating slot 823 identical, ponding can comprehensive inflow inspection shaft, fence frame 1
Stand on the catch pit port on ground, can prevent personnel from crashing into be poured with big object, the reflective membrane on 7 surface of fence plays traffic police and is shown as
With, while can be inserted into luminous warning lamp on 1 top inspection well cover of fence frame, 3 superolateral osculum 4 and serve as warning at night,
As shown in Figure 6.When needing someone to enter inspection shaft work, 45 degree are rotated counterclockwise after fence frame 1 is mentioned bottom, makes positioning pin
10 alignment separation outlets 824 can be taken off fence frame 1, and fence frame 1 can form construction surrounding fence with other fences, ensure construction peace
Entirely, as shown in Figure 7.
Technological means disclosed in the present invention program is not limited only to the technological means disclosed in the above embodiment, further includes
Formed technical solution is combined by above technical characteristic.It should be pointed out that for those skilled in the art
For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (10)
1. a kind of anti-blocking anti-fall fast row's type safe manhole device, including the retainer ring on ground is embedded in advance（2）And it is arranged at fixation
Ring（2）Interior inspection well cover（3）, it is characterised in that：The inspection well cover（3）Lower section is provided with by more fence（7）The cylinder of composition
Shape inspection shaft frame（1）, inspection shaft frame（1）Medium position has been disposed radially filter grid（6）, filter grid（6）The inspection shaft frame on top
（1）Offer lattice door to be opened/closed（5）, inspection shaft frame（1）Lateral wall is circumferentially angularly evenly arranged with multiple positioning
Guide rail（8）；The retainer ring（2）Radially inside angularly it is provided with multiple positioning pins（10）.
2. the anti-blocking anti-fall fast row's type safe manhole device of one kind according to claim 1, it is characterised in that：The positioning is led
Rail（8）Including with forming inspection shaft frame（1）Fence（7）The guide rail of parallel setting（81）, guide rail（81）On be provided with it is multiple mutually
Arc hollow locating slot that is parallel and laterally setting（82）, hollow locating slot（82）With guide rail（81）Interior track is connected.
3. the anti-blocking anti-fall fast row's type safe manhole device of one kind according to claim 2, it is characterised in that：The arc is determined
Position groove（82）Heavy ground locating slot is divided into from top to bottom（821）, clean locating slot（822）, locating slot is arranged soon（823）Under and
End separation outlet（824）, clean locating slot（822）, locating slot is arranged soon（823）And lower end separation outlet（824）Positioned at guide rail
（81）Side, heavy ground locating slot（821）Positioned at guide rail（81）Opposite side.
4. the anti-blocking anti-fall fast row's type safe manhole device of one kind according to claim 1 or 2, it is characterised in that：It is described solid
Determine ring（2）The ring-shaped rubber pad set by inner side（11）With inspection well cover（3）Connection.
5. the anti-blocking anti-fall fast row's type safe manhole device of one kind according to claim 1 or 2, it is characterised in that：The basement
Well lid（3）With inspection shaft frame（1）Top is fixedly connected or to be flexibly connected.
6. the anti-blocking anti-fall fast row's type safe manhole device of one kind according to claim 1 or 2, it is characterised in that：The basement
Well lid（3）It is provided with multiple osculums（4）.
7. the anti-blocking anti-fall fast row's type safe manhole device of one kind according to claim 1 or 2, it is characterised in that：The basement
Crib（1）Cross sectional dimensions be less than inspection well cover（3）Size.
8. the anti-blocking anti-fall fast row's type safe manhole device of one kind according to claim 1 or 2, it is characterised in that：It is described solid
Determine ring（2）The positioning pin of interior setting（10）Quantity and positioning guide rail（8）.
9. the anti-blocking anti-fall fast row's type safe manhole device of one kind according to claim 1 or 2, it is characterised in that：The basement
Crib（1）Fence（7）On be provided with reflection alarming film.
10. the anti-blocking anti-fall fast row's type safe manhole device of one kind according to claim 1 or 2, it is characterised in that：The basement
Crib（1）, retainer ring（2）It is made of the engineering plastics of High-strength compression resistant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810005215.0A CN108035427B (en) | 2018-01-03 | 2018-01-03 | Anti-blocking anti-falling quick-drainage type safety inspection well device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810005215.0A CN108035427B (en) | 2018-01-03 | 2018-01-03 | Anti-blocking anti-falling quick-drainage type safety inspection well device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108035427A true CN108035427A (en) | 2018-05-15 |
| CN108035427B CN108035427B (en) | 2024-03-29 |
Family
ID=62098690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810005215.0A Active CN108035427B (en) | 2018-01-03 | 2018-01-03 | Anti-blocking anti-falling quick-drainage type safety inspection well device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108035427B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110042868A (en) * | 2019-05-14 | 2019-07-23 | 中建五局土木工程有限公司 | Anti-jump vehicle inspection shaft and its construction method |
| CN110258477A (en) * | 2019-06-28 | 2019-09-20 | 中国电建集团成都勘测设计研究院有限公司 | Water power surge shaft keeps off stone structure |
| CN113463690A (en) * | 2021-06-21 | 2021-10-01 | 中国长江电力股份有限公司 | Hydropower station foundation manhole protection device and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383493A (en) * | 2011-12-05 | 2012-03-21 | 北京沃安特环境科技有限公司 | Automatic basket grid sewage filter device |
| CN202745079U (en) * | 2012-09-25 | 2013-02-20 | 潘乃延 | Municipal sewage manhole cover with filter net |
| CN203411998U (en) * | 2013-08-29 | 2014-01-29 | 邵帅 | Safety protection net of underground pipeline inspection well |
| CN104120778A (en) * | 2013-07-23 | 2014-10-29 | 山东职业学院 | Novel inspection well device on road |
| CN204983104U (en) * | 2015-10-29 | 2016-01-20 | 贵州中贵伟业环保工程有限公司 | Inlet of sewer equipment with prevent blockking up function |
| CN207794273U (en) * | 2018-01-03 | 2018-08-31 | 刘馨琳 | A kind of anti-blocking anti-fall fast row's type safe manhole device |
-
2018
- 2018-01-03 CN CN201810005215.0A patent/CN108035427B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383493A (en) * | 2011-12-05 | 2012-03-21 | 北京沃安特环境科技有限公司 | Automatic basket grid sewage filter device |
| CN202745079U (en) * | 2012-09-25 | 2013-02-20 | 潘乃延 | Municipal sewage manhole cover with filter net |
| CN104120778A (en) * | 2013-07-23 | 2014-10-29 | 山东职业学院 | Novel inspection well device on road |
| CN203411998U (en) * | 2013-08-29 | 2014-01-29 | 邵帅 | Safety protection net of underground pipeline inspection well |
| CN204983104U (en) * | 2015-10-29 | 2016-01-20 | 贵州中贵伟业环保工程有限公司 | Inlet of sewer equipment with prevent blockking up function |
| CN207794273U (en) * | 2018-01-03 | 2018-08-31 | 刘馨琳 | A kind of anti-blocking anti-fall fast row's type safe manhole device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110042868A (en) * | 2019-05-14 | 2019-07-23 | 中建五局土木工程有限公司 | Anti-jump vehicle inspection shaft and its construction method |
| CN110042868B (en) * | 2019-05-14 | 2023-12-29 | 中建五局土木工程有限公司 | Anti-jump inspection well and construction method thereof |
| CN110258477A (en) * | 2019-06-28 | 2019-09-20 | 中国电建集团成都勘测设计研究院有限公司 | Water power surge shaft keeps off stone structure |
| CN113463690A (en) * | 2021-06-21 | 2021-10-01 | 中国长江电力股份有限公司 | Hydropower station foundation manhole protection device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108035427B (en) | 2024-03-29 |
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