CN107401422A - A kind of deep-well fills relief pipeline apparatus and method - Google Patents
A kind of deep-well fills relief pipeline apparatus and method Download PDFInfo
- Publication number
- CN107401422A CN107401422A CN201710602422.XA CN201710602422A CN107401422A CN 107401422 A CN107401422 A CN 107401422A CN 201710602422 A CN201710602422 A CN 201710602422A CN 107401422 A CN107401422 A CN 107401422A
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- pressure release
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- pipeline
- release pond
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000002002 slurry Substances 0.000 claims abstract description 84
- 238000005381 potential energy Methods 0.000 claims abstract description 35
- 238000003756 stirring Methods 0.000 claims abstract description 11
- 230000004888 barrier function Effects 0.000 claims abstract description 3
- 230000001914 calming effect Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 description 14
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000002407 reforming Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000007799 cork Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
Abstract
A kind of deep-well fills relief pipeline equipment, and it includes pipeline and pressure release pond, and pressure release pond connects between tubes, and pipeline side is provided with opening, and opening is provided with potential energy device.The present invention is collected by potential energy device and converts the energy of slurry, the slurry pressure of pipeline is relaxed by pressure release pond, realize the steady of deep-well filling slurry pipeline transport, drive device of the potential energy device as other deep-well pad devices simultaneously, the potential energy of slurry is effectively utilized, and adds the linkage between equipment.Present invention additionally comprises a kind of deep-well to fill pressure releasing method：Pipe side side opening is dropped down onto under slurry and impacts baffle plate, the rotation of barrier driving main shaft；Pressure release pond is fallen into after slurry impact baffle plate；Spindle drive to countershaft, driving countershaft rotates；Countershaft driving stirring slurry rotation；Slurry in agitating paddle disturbance pressure release pond.The deep-well filling pressure releasing method using slurry potential energy be used as agitating shaft driving energy, potential energy device and agitating paddle linkage, the good integrity of whole equipment.
Description
Technical field
The present invention relates to filling in mine slurry transport field, and relief pipeline equipment and side are filled more particularly, to a kind of deep-well
Method.
Background technology
As persistent resources are exploited, mining needs to enter deep-well（Below 800 meters of earth's surface）, deep-well filling slurry it is defeated
Send, the difference in height from earth's surface to shaft bottom is increasing, causes slurry excessive to the pressure of pipeline.And the resistance of pipeline compared with
Small, there is security, pipe wear, operation cost etc. and make unfavorable factor in pipe-line transportation system.
Existing pipeline energy dissipation is to use energy-dissipation orifice plate mostly, but because deep-well filling slurry is mostly structure stream, i.e. laminar flow,
And energy-dissipation orifice plate principle is realized for aggravation slurry local turbulent and increases resistance, thus energy-dissipation orifice plate is not suitable for filling slurry and increases resistance.
Publication No. is that the A of CN 106523027 application for a patent for invention discloses a kind of deep-well pipeline transportation release filling dress
Put and its application method, the deep-well pipeline transportation release device for filling include filling pipeline, release case, one-way cock, pressure
Measuring instrument, spool, Filling Station, cork backing plate and angle steel.Its achieve reduce slurry to the pressure of pipeline, improve deep-well conveying
Stability, extend the service life of pipeline, improve a series of effects such as the security performance of pipeline.
It is disadvantageous in that：Slurry is not used from the height differential possessed potential energy in bottom surface to shaft bottom, but
Its energy is gradually used up by release case, causes the waste of energy；And difference in height is bigger, the energy of waste is more.
The content of the invention
The technical problem to be solved in the present invention is：Overcome the deficiencies in the prior art, there is provided a kind of deep-well fills relief pipeline
Apparatus and method, the steady conveying of slurry is realized, reduce pipeline pressure, while collect the potential energy of slurry, save the energy.
The technical solution adopted for the present invention to solve the technical problems is：A kind of deep-well filling relief pipeline equipment is provided,
Including pipeline and pressure release pond, it is connected at the top of pressure release pond with pipeline, afterbody is connected with another segment pipe, and pipeline side is provided with opening,
Opening is provided with potential energy device.
The circle baffle plate that potential energy device includes main shaft and main shaft periphery is provided with；Baffle plate stretches into opening.
Preferably, during baffle plate level, the sectional area for stretching into opening portion is the half of pipeline section product.
Further, caliber is more than top caliber below the opening of pipeline side.
Further, the volume in pressure release pond is not less than 10 cubic metres.
Further, the quantity in pressure release pond is two or more, and the level height in each pressure release pond reduces successively.
Further, disturbance device is provided with pressure release pond.
Disturbance device is the nozzle of calming the anger installed in pressure release bottom of pond portion, and nozzle of calming the anger is arranged on air jet pipe, air jet pipe from
Pressure release pond side is stretched into.
Or disturbance device is agitating paddle, countershaft stretches at the top of pressure release pond, and agitating paddle is arranged on the bottom of countershaft；Potential energy
Main shaft one end of reforming unit is coaxially connected with main angular wheel, and main angular wheel engages with secondary angular wheel, secondary angular wheel
Center is arranged countershaft.When pressure release pond quantity is two or more, the pipeline side between each pressure release pond is equipped with opening and is open
Place is provided with potential energy device；Main shaft one end of each potential energy device is coaxially connected with main angular wheel, main angular wheel
Engaged with secondary angular wheel, secondary angular wheel center is arranged countershaft.
The present invention also provides a kind of deep-well filling pressure releasing method, including：
By potential energy device, it is kinetic energy by the potential energy of slurry and passes to other deep-well pad devices to use.Specifically
Ground, comprise the following steps：
（1）Pipe side side opening is dropped down onto under slurry and impacts baffle plate, the rotation of barrier driving main shaft；
（2）Pressure release pond is fallen into after slurry impact baffle plate；
（3）Spindle drive to countershaft, driving countershaft rotates；
（4）Countershaft driving stirring slurry rotation；Slurry in agitating paddle disturbance pressure release pond.
Further, step（4）It is further comprising the steps of afterwards：
（5）Slurry flows into the pipeline of back segment from previous pressure release pond, under drop down onto back segment pipeline side opening, impact baffle plate；
（6）Latter pressure release pond is fallen into after slurry impact baffle plate；
（7）Spindle drive to countershaft, driving countershaft rotates；
（8）Countershaft driving stirring slurry rotation；Slurry in agitating paddle disturbance pressure release pond.
Beneficial effects of the present invention：
（1）Collected by potential energy device and convert the energy of slurry, realize the steady of deep-well filling slurry pipeline transport, simultaneously
Drive device of the potential energy device as other deep-well pad devices, is effectively utilized harmful potential energy of slurry, and adds
Linkage between deep-well pad device；
（2）Pipeline side is provided with multiple openings, open space arrangement, and each opening is equipped with potential energy device, and potential energy turns
Disguise the baffle plate put and stretch into residing opening.When difference in height is larger, this structure can gradually reclaim slurry in diverse location
The kinetic energy of whereabouts, efficiency effect is further increased, while the kinetic energy of the main shaft rotation of each potential energy device can be driven
Used to other equipment, capacity usage ratio is higher；
（3）Caliber is more than top caliber below the opening of pipeline side, and baffle plate, which leaves pipeline, needs to move longer distance and more
The long time, the time that the slurry being attached on baffle plate is shed in pipeline is more abundant, effectively reduces and comes off outside pipeline
Slurry.During baffle plate level, the sectional area for stretching into opening portion is the half of pipeline section product, on the one hand can effectively be turned
The kinetic energy that material slurry falls, on the other hand will not cause pipeline 1 to block；
（4）The slurry pressure of the pipe end of front end has been relaxed in pressure release pond, realizes the effect of pressure release, and by after low pressure slurry feeding
The pipeline at end.The volume in pressure release pond is more than 10 cubic metres, guarantee slurry distance forward in pressure release pond, and pressure release is more abundant；
The quantity in pressure release pond is two or more, and the level height in each pressure release pond reduces successively, realizes the effect of pipeline successively pressure release；
（5）Slurry is disturbed by disturbance device, the relative motion between increase slurry, particle is uniform in holding slurry
Distribution, so as to avoid alluvial phenomenon of the slurry in pressure release pond；
（6）Pressure releasing method is filled by deep-well provided by the invention, while realizing that deep-well filling slurry pipeline transport is steady, is also equipped with
The effect of alluvial of the slurry in pressure release pond is avoided, the driving energy of agitating shaft, potential energy dress are used as by the use of the potential energy of slurry
Put and linked with agitating paddle, the globality of whole equipment is preferable；
（7）The quantity in pressure release pond is more than one, and the level height in each pressure release pond reduces successively, realizes pipeline successively pressure release
Effect.Further, the pipeline side between each pressure release pond is equipped with opening and opening is provided with potential energy device；Per segment pipe
Between by potential energy device realize increase resistance effect of energy dissipation, and by energy be used for drive agitating paddle to rotate, realize and let out to each
Press the stirring of slurry in pond.
Brief description of the drawings
Fig. 1-it is the schematic diagram that a kind of 1 deep-well of embodiment fills pressure relief equipment；
Fig. 2-be Fig. 1 in A-A directions schematic diagram；
Fig. 3-it is the schematic diagram that a kind of 2 deep-well of embodiment fills pressure relief equipment；
Fig. 4-it is the structural representation of nozzle of being calmed the anger in embodiment 2；
Fig. 5-it is the schematic diagram that a kind of 3 deep-well of embodiment fills pressure relief equipment；
The enlarged diagram of Fig. 6-be in Fig. 5 at B；
Fig. 7-it is the schematic diagram that a kind of 4 deep-well of embodiment fills pressure relief equipment.
Description of reference numerals
1 pipeline；1.1 opening；2 potential energy devices；3 main shafts；4 baffle plates；5 pressure release ponds；6 air jet pipes；6.1 calm the anger nozzle；7 stirrings
Oar；8 countershafts；9 main angular wheels；10 secondary angular wheels.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
Embodiment 1
With reference to Fig. 1 and 2, a kind of deep-well fills relief pipeline equipment, including pipeline 1 and pressure release pond 5, the top of pressure release pond 5 and pipeline 1
Connection, afterbody are connected with another segment pipe 1, and the side of pipeline 1 is provided with opening 1.1, and potential energy device 2 is provided with opening 1.1.
The circle baffle plate 4 that potential energy device 2 includes main shaft 3 and the periphery of main shaft 3 is provided with；Baffle plate 4 stretches into opening 1.1.
When baffle plate 4 is horizontal, the sectional area for stretching into 1.1 parts of opening is the half of the sectional area of pipeline 1.
The lower section caliber of opening 1.1 of the side of pipeline 1 is more than top caliber.
The volume in pressure release pond is not less than 10 cubic metres.
The operation principle of the present embodiment is：
Slurry is fallen from pipeline 1, and baffle plate 4 is touched in way, by the resistance from baffle plate 4, is realized and is increased resistance effect of energy dissipation；Baffle plate
After 4 are impacted by slurry, main shaft 3 is driven to rotate.In the process, by baffle plate 4, the kinetic energy that slurry falls is partially converted into main shaft
The kinetic energy of 3 rotations.The kinetic energy of main shaft 3 can be further provided to other equipment use.
The slurry of the pipeline 1 from front end is accepted in pressure release pond 5, and after slurry enters pressure release pond 5, the kinetic energy of whereabouts is changed into
The kinetic energy of flow forward in pressure release pond 5, the slurry pressure of the end of pipeline 1 of front end is relaxed, has passed through the bottom of pond of pressure release pond 5 and pool wall
Friction gradually eliminate its kinetic energy, realize the effect of pressure release, low pressure slurry enters the pipeline 1 of rear end.
The part that baffle plate 4 stretches into opening 1.1 is excessive, easily causes pipeline 1 and blocks；Baffle plate 4 stretches into the part mistake of opening 1.1
Small, then the conversion of slurry kinetic energy is less efficient.When baffle plate 4 is horizontal, the sectional area for stretching into 1.1 parts of opening is the sectional area of pipeline 1
Half, on the one hand can effectively convert slurry whereabouts kinetic energy, on the other hand pipeline 1 will not be caused to block.
Due to the stickiness of slurry, after it contacts baffle plate 4, there may be sub-fraction slurry to be attached on baffle plate 4, and due to master
The rotation of axle 3 is taken out of outside pipeline 1 by baffle plate 4, may be come off and fallen outside pipeline 1 from baffle plate 4 under gravity.The side of pipeline 1
The lower section caliber of opening 1.1 on side is more than top caliber, and baffle plate 4, which leaves pipeline 1, to be needed to move longer distance and more long time,
Therefore the time that this structure allows the slurry being attached on baffle plate 4 to be shed in pipeline 1 is more abundant, effectively reduces and comes off in pipe
Slurry outside road 1.
The volume in pressure release pond 5 is not less than 10 cubic metres, ensures the distance that slurry moves ahead in pressure release pond 5, and pressure release is more filled
Point.
Embodiment 2
Reference picture 3 and 4, embodiments of the invention 2 are substantially the same manner as Example 1, and difference is：
The deep-well filling pressure relief equipment that the present embodiment provides includes two pressure release ponds 5, in addition to pressure release pond 5, the top of pressure release pond 5 and
Pipeline 1 is connected, and afterbody is connected with next segment pipe 1, and the volume in pressure release pond 5 is more than 10 cubic metres, and the level in two pressure release ponds 5 is high
Degree reduces successively.
Disturbance device is provided with pressure release pond 5.
Disturbance device is the nozzle 6.1 of calming the anger installed in the bottom of pressure release pond 5, and nozzle 6.1 of calming the anger is arranged on air jet pipe 6,
Air jet pipe 6 stretches into from the side of pressure release pond 5.
The operation principle of the present embodiment is：
The quantity in pressure release pond 5 is two, and the level height in each pressure release pond 5 reduces successively, realizes the effect of the successively pressure release of pipeline 1
Fruit.The quantity of pressure release pond 5 in the present embodiment is two, equally applicable for more than two pressure release ponds 5.
The time that slurry moves in pressure release pond 5 is longer, easier to be deposited in pressure release pond 5, and the consequence of alluvial is then let out
The dischargeable capacity in pond 5 is pressed to reduce.Slurry is disturbed by disturbance device, increases the relative motion between slurry, keeps material
Particle is uniformly distributed in slurry, so as to avoiding alluvial phenomenon of the slurry in pressure release pond 5.In the present embodiment, disturbance device is
To calm the anger nozzle 6, compressed air is sprayed into slurry using nozzle 6 of calming the anger, air-flow flows the stirring realized to slurry in slurry,
Realize the disturbance to slurry.
Embodiment 3
With reference to 5 and 6, embodiments of the invention 3 are substantially the same manner as Example 1, and difference is：
Disturbance device is provided with pressure release pond 5.
Disturbance device is agitating paddle 7, and countershaft 8 stretches into from the top of pressure release pond 5, and agitating paddle 7 is arranged on the bottom of countershaft 8；Gesture
One end of main shaft 3 of energy reforming unit 2 is coaxially connected with main angular wheel 9, and main angular wheel 9 engages with secondary angular wheel 10, secondary
The center of angular wheel 10 is arranged countershaft 8.
The operation principle of the present embodiment is：
Slurry is fallen from pipeline 1, and baffle plate 4 is touched in way, by the resistance from baffle plate 4, is realized and is increased resistance effect of energy dissipation；Herein
During, by baffle plate 4, the kinetic energy that slurry falls is partially converted into the kinetic energy of the rotation of main shaft 3.
Kinetic energy is transferred to the main angular wheel 9 for being coaxial therewith connection, main angular wheel 9 and secondary angular wheel 10 by main shaft 3
Engagement, transmission direction changes, and kinetic energy is transferred to secondary angular wheel 10, is further driven to countershaft 8 and rotates, the bottom of countershaft 8 is stirred
Mix oar 7 to rotate, realize the stirring to slurry in pressure release pond 5.
Embodiment 4
Reference picture 7, embodiments of the invention 4 are substantially the same manner as Example 3, and difference is：
The quantity in pressure release pond 5 is three, and the level height in each pressure release pond 5 reduces successively.
Disturbance device is equipped with each pressure release pond 5.
Disturbance device is agitating paddle 7, and countershaft 8 stretches into from the top of pressure release pond 5, and agitating paddle 7 is arranged on the bottom of countershaft 8；Respectively
The side of pipeline 1 between pressure release pond 5 is equipped with opening 1.1 and opening 1.1 and is provided with potential energy device 2；Each potential energy
One end of main shaft 3 of device 2 is coaxially connected with main angular wheel 9, and main angular wheel 9 engages with secondary angular wheel 10, secondary conical tooth
Take turns 10 centers and be arranged countershaft 8.
The operation principle of the present embodiment is：
The quantity in pressure release pond 5 is three, and each pressure release pond 5 is located at different height, realizes the effect of the successively pressure release of pipeline 1.
Slurry is fallen from pipeline 1, and baffle plate 4 is touched in way, by the resistance from baffle plate 4, is realized and is increased resistance effect of energy dissipation；
In the process, by baffle plate 4, the kinetic energy that slurry falls is partially converted into the kinetic energy of the rotation of main shaft 3.Main shaft 3 transmits kinetic energy
To the main angular wheel 9 for being coaxial therewith connection, main angular wheel 9 engages with secondary angular wheel 10, and transmission direction changes, and kinetic energy
Secondary angular wheel 10 is transferred to, countershaft 8 is further driven to and rotates, the agitating paddle 7 of the bottom of countershaft 8 rotates, and realizes in pressure release pond 5
The stirring of slurry.
The side of pipeline 1 between each pressure release pond 5 is equipped with opening 1.1 and opening 1.1 and is provided with potential energy device 2；Often
Realized between segment pipe 1 by potential energy device 2 and increase resistance effect of energy dissipation, and energy is realized for driving agitating paddle 7 to rotate
Stirring to slurry in each pressure release pond 5.
Claims (10)
1. a kind of deep-well fills relief pipeline equipment, including pipeline and pressure release pond, be connected at the top of pressure release pond with pipeline, afterbody and separately
One segment pipe connects, it is characterised in that pipeline side is provided with opening, and opening is provided with potential energy device.
2. deep-well as claimed in claim 1 fills relief pipeline equipment, it is characterised in that potential energy device include main shaft and
The circle baffle plate that main shaft periphery is provided with；Baffle plate stretches into opening.
3. deep-well as claimed in claim 2 fills relief pipeline equipment, it is characterised in that during baffle plate level, stretches into opening portion
The sectional area divided is the half of pipeline section product.
4. deep-well as claimed in claim 2 fills relief pipeline equipment, it is characterised in that caliber below the opening of pipeline side
More than top caliber；Or the volume in pressure release pond is not less than 10 cubic metres.
5. deep-well as claimed in claim 2 fills relief pipeline equipment, it is characterised in that the quantity in pressure release pond be two with
On, the level height in each pressure release pond reduces successively.
6. the deep-well filling relief pipeline equipment as described in claim 2 or 5, it is characterised in that disturbance dress is provided with pressure release pond
Put.
7. deep-well as claimed in claim 6 fills relief pipeline equipment, it is characterised in that disturbance device is installed in pressure release pond
The nozzle of calming the anger of bottom, nozzle of calming the anger are arranged on air jet pipe, and air jet pipe stretches into from pressure release pond side.
8. deep-well as claimed in claim 6 fills relief pipeline equipment, it is characterised in that disturbance device is agitating paddle, countershaft
Stretched at the top of from pressure release pond, agitating paddle is arranged on the bottom of countershaft；Main shaft one end of potential energy device is coaxially connected with main cone
Shape gear, main angular wheel engage with secondary angular wheel, and secondary angular wheel center is arranged countershaft.
9. a kind of deep-well fills pressure releasing method, it is characterised in that a kind of deep-well filling relief pipeline described in usage right requirement 8
Equipment, comprise the following steps：
（1）Pipe side side opening is dropped down onto under slurry and impacts baffle plate, the rotation of barrier driving main shaft；
（2）Pressure release pond is fallen into after slurry impact baffle plate；
（3）Spindle drive to countershaft, driving countershaft rotates；
（4）Countershaft driving stirring slurry rotation；Slurry in agitating paddle disturbance pressure release pond.
10. deep-well as claimed in claim 9 fills pressure releasing method, it is characterised in that step（4）It is further comprising the steps of afterwards：
（5）Slurry flows into the pipeline of back segment from previous pressure release pond, under drop down onto back segment pipeline side opening, impact baffle plate；
（6）Latter pressure release pond is fallen into after slurry impact baffle plate；
（7）Spindle drive to countershaft, driving countershaft rotates；
（8）Countershaft driving stirring slurry rotation；Slurry in agitating paddle disturbance pressure release pond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710602422.XA CN107401422A (en) | 2017-07-21 | 2017-07-21 | A kind of deep-well fills relief pipeline apparatus and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710602422.XA CN107401422A (en) | 2017-07-21 | 2017-07-21 | A kind of deep-well fills relief pipeline apparatus and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107401422A true CN107401422A (en) | 2017-11-28 |
Family
ID=60401255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710602422.XA Pending CN107401422A (en) | 2017-07-21 | 2017-07-21 | A kind of deep-well fills relief pipeline apparatus and method |
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| Country | Link |
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| CN (1) | CN107401422A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112970958A (en) * | 2021-03-19 | 2021-06-18 | 浙江大学 | Disease-resistant pig feed and preparation process thereof |
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| CN101725368A (en) * | 2009-11-28 | 2010-06-09 | 山东科技大学 | Thick seam large mining height working face gob-side entry retaining method |
| JP2014190135A (en) * | 2013-03-28 | 2014-10-06 | Kajima Corp | Method and device for forming bulkhead |
| CN204729128U (en) * | 2015-06-11 | 2015-10-28 | 长沙矿山研究院有限责任公司 | A kind of automatic decompression device for filling plugging |
| CN205876389U (en) * | 2016-08-11 | 2017-01-11 | 铜陵有色股份安庆月山矿业有限公司 | A decompression chamber for deep well fills |
| CN205906728U (en) * | 2016-08-16 | 2017-01-25 | 长沙矿山研究院有限责任公司 | Fill ground paste pipeline resistance -increasing device |
| CN106523027A (en) * | 2016-11-22 | 2017-03-22 | 河南理工大学 | Deep well pipeline delivery pressure relieving and filling device and using method thereof |
| CN207538857U (en) * | 2017-07-21 | 2018-06-26 | 长沙矿山研究院有限责任公司 | A kind of deep-well fills relief pipeline equipment |
-
2017
- 2017-07-21 CN CN201710602422.XA patent/CN107401422A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101725368A (en) * | 2009-11-28 | 2010-06-09 | 山东科技大学 | Thick seam large mining height working face gob-side entry retaining method |
| JP2014190135A (en) * | 2013-03-28 | 2014-10-06 | Kajima Corp | Method and device for forming bulkhead |
| CN204729128U (en) * | 2015-06-11 | 2015-10-28 | 长沙矿山研究院有限责任公司 | A kind of automatic decompression device for filling plugging |
| CN205876389U (en) * | 2016-08-11 | 2017-01-11 | 铜陵有色股份安庆月山矿业有限公司 | A decompression chamber for deep well fills |
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| CN106523027A (en) * | 2016-11-22 | 2017-03-22 | 河南理工大学 | Deep well pipeline delivery pressure relieving and filling device and using method thereof |
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| CN112970958A (en) * | 2021-03-19 | 2021-06-18 | 浙江大学 | Disease-resistant pig feed and preparation process thereof |
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Effective date of abandoning: 20231215 |