CN107119703A - A kind of water conservancy rushes heavy well construction equipment - Google Patents
A kind of water conservancy rushes heavy well construction equipment Download PDFInfo
- Publication number
- CN107119703A CN107119703A CN201710326758.8A CN201710326758A CN107119703A CN 107119703 A CN107119703 A CN 107119703A CN 201710326758 A CN201710326758 A CN 201710326758A CN 107119703 A CN107119703 A CN 107119703A
- Authority
- CN
- China
- Prior art keywords
- transverse slat
- sludge
- pump
- pipeline
- filtering ponds
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 238000010276 construction Methods 0.000 title claims abstract description 20
- 239000010802 sludge Substances 0.000 claims abstract description 49
- 238000001914 filtration Methods 0.000 claims abstract description 31
- 230000006835 compression Effects 0.000 claims abstract description 8
- 238000007906 compression Methods 0.000 claims abstract description 8
- 239000002689 soil Substances 0.000 claims description 12
- 238000010992 reflux Methods 0.000 claims description 11
- 241000628997 Flos Species 0.000 claims description 4
- 238000004080 punching Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
- E02D23/08—Lowering or sinking caissons
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
- E02D23/08—Lowering or sinking caissons
- E02D23/10—Caissons filled with compressed air
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Treatment Of Sludge (AREA)
Abstract
Heavy well construction equipment is rushed the invention discloses a kind of water conservancy, including base, cistern, sludge pump, the borehole wall and high-pressure nozzle, the base is fixedly arranged above cistern, water pump is installed on the base of cistern side, middle position above the base is provided with the borehole wall, the top of the borehole wall is fixed with transverse slat, middle position above the transverse slat is provided with threeway section, the center position of the threeway section bottom is provided with drainage tube, the transverse slat of the threeway section side is fixedly arranged above sludge pump, the output end of the sludge pump is provided with sludge pipeline, middle position below the transverse slat is provided with electric expansion bar, one end away from transverse slat is provided with orthogonal two E shapes Zhi Liuguan in electric expansion bar, compression pump is installed on the outer wall of the filtering ponds side.The present invention not only increases the heavy operating efficiency of punching, and avoids the sludge generation deposited phenomenon after impact, improves the utilization ratio of water resource, saves water resource.
Description
Technical field
The present invention relates to Open caisson construction technology field, specially a kind of water conservancy rushes heavy well construction equipment.
Background technology
With expanding economy, scientific and technological continuous progress and the increasingly reduction of world energy sources, people in life increasingly
Pay attention to saving and the utilization ratio of the energy so that harmony between man and nature develops to meet the industrialization road requirement that China is new,
Open caisson is the works of reinforced concrete earthy, and conventional caisson method mainly includes：The big plate combined support construction of shaped steel, water conservancy
Heavy well construction, cast-in-situ steel reinforced concrete open caisson construction etc. are rushed, rational construction equipment, the peace that will be constructed to sewer line is selected
Entirely, quality, progress produce material impact, and the cycle of general traditional open caisson construction equipment processing is longer, the effect in the course of work
Rate is relatively low, and the growing requirement of sink well technique can not have been met, and the open caisson construction equipment having is often in work progress
The very big wasting of resources can be produced, it is impossible to accomplish the saving resource at utmost changed, some open caisson construction equipment are also simply used
Single impact dynamics, can not both improve operating efficiency, and the soil mixture in well can not also quickly discharged, greatly influences
Activity duration of workmen.
The content of the invention
Heavy well construction equipment is rushed it is an object of the invention to provide a kind of water conservancy, to solve to propose in above-mentioned background technology
The problem of.
To achieve the above object, the present invention provides following technical scheme：A kind of water conservancy rushes heavy well construction equipment, including bottom
Seat, cistern, sludge pump, the borehole wall and high-pressure nozzle, the base are fixedly arranged above on cistern, the base of cistern side
Water pump is installed, and the output end of water pump is connected by aqueduct with cistern, the middle position above the base is provided with
The borehole wall, the middle position that the top of the borehole wall is fixed with above transverse slat, the transverse slat is provided with threeway section, the one of threeway section top
Side is provided with inlet channel, and one end of inlet channel is connected with the output end of water pump, the center position of the threeway section bottom
Drainage tube is installed, and transverse slat and the bottom extended on the inside of the borehole wall, the horizontal stroke of the threeway section side are run through in the bottom of drainage tube
Plate is fixedly arranged above sludge pump, and the input of sludge pump is provided with soil pick-up pipeline, and the one end of soil pick-up pipeline away from sludge pump is passed through
Transverse slat and the bottom extended to inside the borehole wall are worn, the output end of the sludge pump is provided with above sludge pipeline, the transverse slat far
Side from sludge pump is fixed with feeder, and the transverse slat top of feeder side is provided with air compressor, and air pressure
The input of contracting machine is connected by airway tube with the output end of feeder, and the output end of the air compressor is provided with gas transmission
Pipeline, and transverse slat and the bottom extended to inside the borehole wall, the appendix are run through in one end of gas pipeline principle air compressor
The angle that one end away from air compressor is provided between air gun, and air gun and horizontal plane on road is 60 degree, the transverse slat
The middle position of lower section is provided with one end away from transverse slat in electric expansion bar, electric expansion bar and is provided with orthogonal two
Individual E shapes Zhi Liuguan, and E shapes Zhi Liuguan input connects with the output end of drainage tube, the output end of the E shapes Zhi Liuguan is installed
There is one end away from cistern on high-pressure nozzle, the base to be provided with silt basin, and the outer wall of silt basin side is provided with mud
Floss hole, the top of the silt basin is provided with filtering ponds, and the one end of sludge pipeline away from sludge pump is extended to the over inside filter tank
Bottom, the bottom inside the filtering ponds is provided with inside plug net, the filtering ponds of the online side of plug and is fixed with screen pack, the mistake
Reflux line is installed at the top of filter tank, and the one end of reflux line away from filtering ponds is connected with the top of threeway section, the mistake
Compression pump is installed on the outer wall of filter tank side, and the output end of compression pump is connected with the inside of filtering ponds.
It is preferred that, height of the sludge pipeline away from sludge pump one end is less than the height of plug net.
It is preferred that, the reflux line is located at the height of the height more than screen pack of one end inside filtering ponds.
It is preferred that, the height of the soil pick-up pipeline least significant end is less than the height of high-pressure nozzle least significant end.
It is preferred that, the high-pressure nozzle of described two E shapes Zhi Liuguan both sides is all inwardly rolled tiltedly, and high-pressure nozzle and horizontal plane
Angle be 30 degree.
Compared with prior art, utstanding substantial characteristics and significant improvement of the present invention are：By in the upper of base
Side is installed by cistern and water pump, and the middle position installation threeway section above transverse slat, the center position of threeway section bottom
Drainage tube is installed, it is installed with installing orthogonal two E shapes Zhi Liuguan and E shape Zhi Liuguan output ends in electric expansion bar
High-pressure nozzle mutual cooperation work, what is improved rushes heavy operating efficiency, the working time is shortened, by above transverse slat
Feeder is installed in side, and installs air compressor on the transverse slat of feeder side, it is exported with air compressor
End is provided with the air gun mutual cooperation work installed on gas pipeline and gas pipeline away from air compressor one end, and it is heavy to improve
Impact dynamics during well, it is to avoid the sludge after impact produces precipitation, so as to improve the suction speed of sludge, leads to simultaneously
The bottom crossed inside filtering ponds is provided with plug net and screen pack, and installs reflux line at the top of filtering ponds, makes itself and mistake
The compression pump mutual cooperation work installed on the outer wall of filter tank, improves the utilization ratio of water resource, saves the waste of resource, this
The heavy operating efficiency of rushing not only increased is invented, and avoids the sludge after impact and produces deposited phenomenon, water money is improved
The utilization ratio in source.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is E shapes Zhi Liuguan of the invention and shaft wall structure schematic diagram.
In figure：1- bases；2- cisterns；3- inlet channels；4- transverse slats；5- feeders；6- air compressors；7- threeways
Section；8- soil pick-up pipelines；9- sludge pumps；10- sludge pipelines；The 11- boreholes wall；12- reflux lines；13- filtering ponds；14- screen packs；
15- fills in net；16- compression pumps；17- silt basins；18- mud floss holes；19- high-pressure nozzles；20- electric expansion bars；21- air guns；
22-E shapes Zhi Liuguan；23- drainage tubes；24- gas pipelines；25- water pumps.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Refer to Fig. 1-2, a kind of embodiment that the present invention is provided：A kind of water conservancy rushes heavy well construction equipment, including base
1st, cistern 2, sludge pump 9, the borehole wall 11 and high-pressure nozzle 19, base 1 are fixedly arranged above cistern 2, the bottom of the side of cistern 2
Water pump 25 is installed on seat 1, the model of the water pump 25 can be 150QJ20-96/16, and the output end of water pump 25 passes through aqueduct
Connected with cistern 2, the middle position of the top of base 1 is provided with the borehole wall 11, and the top of the borehole wall 11 is fixed with transverse slat 4, transverse slat 4
The middle position of side is provided with threeway section 7, and the side on the top of threeway section 7 is provided with inlet channel 3, and one end of inlet channel 3
Connected with the output end of water pump 25, the center position of the bottom of threeway section 7 is provided with drainage tube 23, and the bottom of drainage tube 23 is passed through
Wear transverse slat 4 and extend to the bottom of the inner side of the borehole wall 11, the transverse slat 4 of the side of threeway section 7 is fixedly arranged above sludge pump 9, the sludge pump 9
Model can be 200QJ32-260/20, the input of sludge pump 9 is provided with soil pick-up pipeline 8, the height of the least significant end of soil pick-up pipeline 8
Less than the height of the least significant end of high-pressure nozzle 19, and the one end of soil pick-up pipeline 8 away from sludge pump 9 is through transverse slat 4 and extends to the borehole wall
Bottom inside 11, the output end of sludge pump 9 is provided with sludge pipeline 10, height of the sludge pipeline 10 away from the one end of sludge pump 9
Less than the height of plug net 15, side of the top of transverse slat 4 away from sludge pump 9 is fixed with feeder 5, the horizontal stroke of the side of feeder 5
The top of plate 4 is provided with air compressor 6, and the input of air compressor 6 is connected by the output end of airway tube and feeder 5
Logical, the output end of air compressor 6 is provided with gas pipeline 24, and one end of the principle air compressor 6 of gas pipeline 24 is run through
One end away from air compressor 6 is provided with air gun 21 on transverse slat 4 and the bottom extended to inside the borehole wall 11, gas pipeline 24,
And the angle between air gun 21 and horizontal plane is 60 degree, the middle position of the lower section of transverse slat 4 is provided with electric expansion bar 20, electricity
One end away from transverse slat 4 is provided with orthogonal two E shapes Zhi Liuguan 22, two 22 liang of E shapes Zhi Liuguan on dynamic expansion link 20
The high-pressure nozzle 19 of side is all inwardly rolled tiltedly, and the angle of high-pressure nozzle 19 and horizontal plane is 30 degree, and E shapes Zhi Liuguan 22
Input is connected with the output end of drainage tube 23, and E shapes Zhi Liuguan 22 output end is provided with remote on high-pressure nozzle 19, base 1
One end of cistern 2 is provided with silt basin 17, and the outer wall of the side of silt basin 17 is provided with mud floss hole 18, the top of silt basin 17
End is provided with filtering ponds 13, and the one end of sludge pipeline 10 away from sludge pump 9 is extended to the over the bottom inside filter tank 13, filtering ponds 13
Internal bottom is provided with inside plug net 15, the filtering ponds 13 of the top of plug net 15 and is fixed with screen pack 14, the top of filtering ponds 13
Reflux line 12 is installed, the height that reflux line 12 is located at the inside one end of filtering ponds 13 is more than the height of screen pack 14, and returns
The one end of flow tube road 12 away from filtering ponds 13 is connected with the top of threeway section 7, and pressure is provided with the outer wall of the side of filtering ponds 13
Pump 16, and the output end of compression pump 16 connects with the inside of filtering ponds 13.
Operation principle：When needing to rush heavy, first by the water pump 25 of the top of base 1, by the water inside cistern 2 through entering
Waterpipe 3 is delivered to inside the threeway section 7 of the top of transverse slat 4, and electric expansion is delivered in the drainage tube 23 by the bottom of threeway section 7
Inside two E shapes Zhi Liuguan 22 of the bottom of bar 20, and sprayed by the high-pressure nozzle 19 of the output ends of E shapes Zhi Liuguan 22, so that
The borehole wall 11 sinks, and completes punching and avales heavy work, when needing increase impact dynamics, is pressed by the air compressor 6 of the top of transverse slat 4
Gas on contracting transverse slat 4 inside feeder 5, is delivered the gas to defeated in the gas pipeline 24 through the output end of air compressor 6
The inside of air gun 21 of the one end of feed channel 24 simultaneously sprays, and completion gas, liquid rush heavy work simultaneously, silt after needing sucking-off punching heavy
Mud and when making it flow back, by the sludge pump 9 of the upper side of transverse slat 4 by input of the sludge through sludge pump 9 of the bottom of the borehole wall 11
Soil pick-up pipeline 8 suck, be delivered in the sludge pipeline 10 by the output end of sludge pump 9 inside silt basin 17, and pass through mud
Plug net 15, screen pack 14 on pond 17 inside filtering ponds 13 is to mud water filtration, while passing through the pressure on the outer wall of filtering ponds 13
Water quality after filtering is compressed to inside reflux line 12 by power pump 16, and through pipeline is to the inside of high-pressure nozzle 19 and sprays,
Complete the heavy work of filtering backlash.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit is required rather than described above is limited, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the claim involved by limitation.
Claims (5)
1. a kind of water conservancy rushes heavy well construction equipment, including base（1）, cistern（2）, sludge pump（9）, the borehole wall（11）And high pressure
Shower nozzle（19）, it is characterised in that：The base（1）Be fixedly arranged above cistern（2）, cistern（2）The base of side（1）On
Water pump is installed（25）, and water pump（25）Output end pass through aqueduct and cistern（2）Connection, the base（1）Top
Middle position is provided with the borehole wall（11）, the borehole wall（11）Top be fixed with transverse slat（4）, the transverse slat（4）The centre position of top
Place is provided with threeway section（7）, threeway section（7）The side on top is provided with inlet channel（3）, and inlet channel（3）One end and water
Pump（25）Output end connection, the threeway section（7）The center position of bottom is provided with drainage tube（23）, and drainage tube（23）
Bottom run through transverse slat（4）And extend to the borehole wall（11）The bottom of inner side, the threeway section（7）The transverse slat of side（4）Top is consolidated
Surely there is sludge pump（9）, sludge pump（9）Input soil pick-up pipeline is installed（8）, and soil pick-up pipeline（8）Away from sludge pump（9）'s
Transverse slat is run through in one end（4）And extend to the borehole wall（11）Internal bottom, the sludge pump（9）Output end sludge pipeline is installed
（10）, the transverse slat（4）Top is away from sludge pump（9）Side be fixed with feeder（5）, feeder（5）The horizontal stroke of side
Plate（4）Top is provided with air compressor（6）, and air compressor（6）Input pass through airway tube and feeder（5）'s
Output end is connected, the air compressor（6）Output end gas pipeline is installed（24）, and gas pipeline（24）Principle air
Compressor（6）One end run through transverse slat（4）And extend to the borehole wall（11）Internal bottom, the gas pipeline（24）It is upper remote empty
Air compressor（6）One end air gun is installed（21）, and air gun（21）Angle between horizontal plane is 60 degree, the transverse slat
（4）The middle position of lower section is provided with electric expansion bar（20）, electric expansion bar（20）Upper remote transverse slat（4）One end install
There is orthogonal two E shapes Zhi Liuguan（22）, and E shapes Zhi Liuguan（22）Input and drainage tube（23）Output end connect
It is logical, the E shapes Zhi Liuguan（22）Output end high-pressure nozzle is installed（19）, the base（1）Upper remote cistern（2）One
End is provided with silt basin（17）, and silt basin（17）The outer wall of side is provided with mud floss hole（18）, the silt basin（17）'s
Top is provided with filtering ponds（13）, and sludge pipeline（10）Away from sludge pump（9）One end be extended to the over filter tank（13）Internal bottom
End, the filtering ponds（13）Internal bottom is provided with plug net（15）, fill in net（15）The filtering ponds of top（13）Inside is fixed with
Screen pack（14）, the filtering ponds（13）Top reflux line is installed（12）, and reflux line（12）Away from filtering ponds
（13）One end and threeway section（7）Top connection, the filtering ponds（13）Compression pump is installed on the outer wall of side（16）, and
Compression pump（16）Output end and filtering ponds（13）Inside connection.
2. a kind of water conservancy according to claim 1 rushes heavy well construction equipment, it is characterised in that：The sludge pipeline（10）
Away from sludge pump（9）The height of one end is less than plug net（15）Height.
3. a kind of water conservancy according to claim 1 rushes heavy well construction equipment, it is characterised in that：The reflux line（12）
Positioned at filtering ponds（13）The height of internal one end is more than screen pack（14）Height.
4. a kind of water conservancy according to claim 1 rushes heavy well construction equipment, it is characterised in that：The soil pick-up pipeline（8）
The height of least significant end is less than high-pressure nozzle（19）The height of least significant end.
5. a kind of water conservancy according to claim 1 rushes heavy well construction equipment, it is characterised in that：Described two E shapes tributaries
Pipe（22）The high-pressure nozzle of both sides（19）All inwardly roll tiltedly, and high-pressure nozzle（19）Angle with horizontal plane is 30 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710326758.8A CN107119703A (en) | 2017-05-10 | 2017-05-10 | A kind of water conservancy rushes heavy well construction equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710326758.8A CN107119703A (en) | 2017-05-10 | 2017-05-10 | A kind of water conservancy rushes heavy well construction equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107119703A true CN107119703A (en) | 2017-09-01 |
Family
ID=59728251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710326758.8A Pending CN107119703A (en) | 2017-05-10 | 2017-05-10 | A kind of water conservancy rushes heavy well construction equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107119703A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109183889A (en) * | 2018-10-30 | 2019-01-11 | 贵州大学 | A kind of Accrete clearing device for small hydropower station |
| CN110747881A (en) * | 2019-10-16 | 2020-02-04 | 中交二航局第四工程有限公司 | Gas pipeline and application thereof in air curtain open caisson |
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|---|---|---|---|---|
| JPH0468409B2 (en) * | 1984-05-07 | 1992-11-02 | Mitsui Constr | |
| KR20020081531A (en) * | 2001-04-18 | 2002-10-28 | 동부엔지니어링 주식회사 | Well form for the base operation of pier and it's operation method |
| CN101158162A (en) * | 2007-11-02 | 2008-04-09 | 上海市基础工程公司 | Construction method of unmanned air pressure caisson |
| CN201896317U (en) * | 2010-12-23 | 2011-07-13 | 浙江环宇建设集团有限公司 | Construction device for complex soil sinking open caisson by undrained dredging |
| CN205116247U (en) * | 2015-09-28 | 2016-03-30 | 杭州萧山水利建筑工程有限公司 | Water conservancy is towards heavy well construction equipment |
| CN106193085A (en) * | 2016-08-31 | 2016-12-07 | 合肥学院 | A kind of barrel base auxiliary is heavy passes through device and installation method |
| CN206090599U (en) * | 2016-09-28 | 2017-04-12 | 东莞市广渠建筑工程有限公司 | A pumping station caisson with an adjustable sinking attitude structure |
-
2017
- 2017-05-10 CN CN201710326758.8A patent/CN107119703A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0468409B2 (en) * | 1984-05-07 | 1992-11-02 | Mitsui Constr | |
| KR20020081531A (en) * | 2001-04-18 | 2002-10-28 | 동부엔지니어링 주식회사 | Well form for the base operation of pier and it's operation method |
| CN101158162A (en) * | 2007-11-02 | 2008-04-09 | 上海市基础工程公司 | Construction method of unmanned air pressure caisson |
| CN201896317U (en) * | 2010-12-23 | 2011-07-13 | 浙江环宇建设集团有限公司 | Construction device for complex soil sinking open caisson by undrained dredging |
| CN205116247U (en) * | 2015-09-28 | 2016-03-30 | 杭州萧山水利建筑工程有限公司 | Water conservancy is towards heavy well construction equipment |
| CN106193085A (en) * | 2016-08-31 | 2016-12-07 | 合肥学院 | A kind of barrel base auxiliary is heavy passes through device and installation method |
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Non-Patent Citations (1)
| Title |
|---|
| 廖潇等: "沉井空气吸泥下沉技术研究", 《中国科技信息》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109183889A (en) * | 2018-10-30 | 2019-01-11 | 贵州大学 | A kind of Accrete clearing device for small hydropower station |
| CN109183889B (en) * | 2018-10-30 | 2024-03-26 | 贵州大学 | A desilting device for small-size hydropower station |
| CN110747881A (en) * | 2019-10-16 | 2020-02-04 | 中交二航局第四工程有限公司 | Gas pipeline and application thereof in air curtain open caisson |
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Application publication date: 20170901 |