CN206177406U - Real -time tracking measurement device of ground water level - Google Patents
Real -time tracking measurement device of ground water level Download PDFInfo
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- CN206177406U CN206177406U CN201621219950.4U CN201621219950U CN206177406U CN 206177406 U CN206177406 U CN 206177406U CN 201621219950 U CN201621219950 U CN 201621219950U CN 206177406 U CN206177406 U CN 206177406U
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- ground water
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Abstract
The utility model discloses a real -time tracking measurement device of ground water level, including shell, controlling means, coiling and uncoiling device and measuring device, the bottom of shell is provided with the unwrapping wire hole, controlling means includes data external connection port, host computer and pulse coder, data external connection port and pulse coder all with host computer electric connection, the host computer setting is inside the shell, coiling and uncoiling device includes leading wheel, action wheel and motor, and leading wheel and action wheel all are located the inside and the axis of the two parallel of shell, motor and host computer electric connection, measuring device is located unwrapping wire hole below, and measuring device passes through connecting wire and is connected with the host computer, and connecting wire passes the unwrapping wire hole, takes the pile warp and crosses the leading wheel and twine on the action wheel. The utility model discloses a real -time tracking measurement device of ground water level transfers length and measuring device feedack through connecting wire, reachs the ground water level data to can carry out real -time tracking measurement when ground water level changes, have and carry out the value popularized and applied.
Description
Technical field
This utility model is related to underground water level measurement technical field, more particularly to a kind of level of ground water real-time follow-up
Device.
Background technology
Subsoil water is very close with the relation of the mankind, and well water and spring water are the most subsoil water of mankind's routine use, are occupied
Irreplaceable status.But, subsoil water will also result in some and endanger, such as underground water excess, and railway, highway can be caused to collapse
Fall into, flood mining area tunnel, form marshland etc..
Progressively expand and deepen along with mankind's breadth and depth movable on earth, superficial part and Deep Groundwater resource
Affected by varying degrees.The survey of land and resources implemented by Chinese Academy of Geological Sciences's hydrological environment Institute of Geology
Planning item《North China Plain Groundwater Contamination Investigation is evaluated》Achievement shows：North China Plain phreatic water comprehensive quality it is overall compared with
Difference, and pollute more serious, unpolluted subsoil water only accounts for the 55.87% of sampled point.Deep phreatic water comprehensive quality is slightly good
In phreatic water, pollute lighter.
At the same time, mankind's activity affects also more notable to groundwater run off.For example, in the world most of oil exploitations are all
Can be pressurizeed using groundwater resources, the oil body of equal volume is depressed into use of making a profit by earth's surface with this, be met in coal mining and contain
Water layer can draw water in advance pressure release (during Opencut coal mine mining meet Water table carry out drainage using drainage well), then working seam.
As can be seen here, mankind's activity is very huge to Effect of Underground Water Level, in some instances it may even be possible to causes lithic drainage disorderly and decreases, or even whole
Layer subsoil water disappears, this life, larger challenge of water for industrial use source proposition to region, if dealing with improperly, it will cause people
Member, the massive losses of property.
At present, for the measurement of level of ground water, domestic and international relevant unit be to respective subject knowledge and purposes very
Limited apparatus is used, without can from motion tracking detecting shaft level of ground water device occur.For example, when flatly
After inspection well is got through, just transferred to water layer using limnimeter, limnimeter is obtained apart from water surface elevation by induction installation, then led to
The wire length crossed below well head calculates the height of water surface distance earth's surface well head.However, this method is excessively limited to, error
Greatly, and by many factors such as landform, stratum and construction itselfs affected, it is impossible to draw time and the sky of level of ground water true and reliablely
Between change.It can be seen that, for the intelligent level of ground water real-time follow-up dress that real-time tracking can be carried out with water surface fluctuation in inspection well
The research and development put and use, be very necessary.
But, existing dip meter device and device, cannot accomplish with level of ground water carry out dynamic realtime with
Track, in large-scale mining activities, oil field development, and in mankind's activity close quarters operation, it is impossible to accomplish precisely, rapidly to measure
And data processing, limit development process.
Therefore, with can with Decline or rise of groundwater level real-time intelligent tracking measurement, and earth's surface wellhead equipment in real time to measurement
Instrument electronic signal is digitized process, and the exploitation of a complete set of measurement apparatus of function such as port data output seems particularly heavy
Will.
Utility model content
The purpose of this utility model is to provide a kind of level of ground water real-time follow-up device, to solve prior art in
The underground water level measurement device of presence can not carry out the technical problem of dynamic realtime tracking measurement with Decline or rise of groundwater level.
To achieve these goals, this utility model is employed the following technical solutions：
A kind of level of ground water real-time follow-up device that this utility model is provided, including：
Shell, the bottom of the shell is provided with unwrapping wire hole；
Control device, the control device includes data external-connected port, main frame and pulse codr, the data external connection end
Mouth and the pulse codr are electrically connected with the main frame, and the main frame is arranged on the enclosure；
Take-up and pay-off device, the take-up and pay-off device includes directive wheel, drivewheel and motor, the directive wheel and the master
Driving wheel is respectively positioned on the inside of the shell and the diameter parallel of the two, and the motor is electrically connected with the main frame；
Measurement apparatus, the measurement apparatus are located at unwrapping wire hole lower section, and the measurement apparatus are by connection electric wire and institute
State main frame connection, the connection electric wire through the unwrapping wire hole, take around through the directive wheel and being wrapped on the drivewheel.
Further, the shell includes horizontal base, housing, is oriented to wheel carrier and active wheel carrier, and the horizontal base is
Discoid, the housing is arranged on the horizontal base, and the guiding wheel carrier and the active wheel carrier are along the horizontal base
Be radially arranged on the horizontal base.
Further, the directive wheel is arranged on the guiding wheel carrier, and the drivewheel is arranged on the active wheel carrier
On.
Further, also including electric case, the electric case is arranged on the active wheel carrier, and the motor sets
Put in the electric case.
Further, the unwrapping wire hole is arranged on the center of the horizontal base.
Further, the data external-connected port is arranged on the side wall of the housing, and the main frame is arranged on the water
On flat pedestal, the pulse codr is arranged on the guiding wheel carrier.
Further, the measurement apparatus include measurement apparatus shell, wire seal lid, hydraulic pressure sensor and water-sensitive sensing
Device, the wire seal lid is arranged on the measurement apparatus cover top portion, and the hydraulic pressure sensor is arranged on the measurement apparatus
Outer casing bottom, the water-sensitive sensor is arranged on the hydraulic pressure sensor bottom.
Further, the measurement apparatus shell is cylindrical shape, and the wire seal lid is provided centrally with entrance hole,
The connection electric wire is connected through the entrance hole with the water-sensitive sensor and the hydraulic pressure sensor.
Further, the hydraulic pressure sensor is provided with permeable hole.
The level of ground water real-time follow-up device that this utility model is provided, by the bottom surface of shell level is put, and will be put
String holes is directed at the center of well head, by main frame and power on, host computer control electric motor operation, drives drivewheel to rotate, right
The connection electric wire being coiled on drivewheel carries out folding and unfolding, through directive wheel during connection electric wire folding and unfolding, drives directive wheel synchronous axial system,
Measurement apparatus are moved up and down with the folding and unfolding of connection electric wire in well, and to level of ground water dynamic realtime tracking, measurement apparatus are carried out
It is immersed in subsoil water after certain distance, by the data signal for measuring by wire transfer is connected to main frame, Framework computing goes out to survey
Apart from the height of the water surface, in the decentralization process of measurement apparatus, pulse codr records the number of turns that directive wheel is rotated to amount device, and
Main frame is transferred signals to, thus main frame calculates the length of connection electric wire decentralization, and main frame is carried out further to data signal
Process and store, draw the data message of level of ground water, the level of ground water data in main frame are can read by data external-connected port；
When underground water level decreasing, measurement signal is transferred to main frame by measurement apparatus, and main frame is by under the continuation of Motor Control drivewheel
Measurement apparatus are put, until measurement apparatus are immersed in certain distance in subsoil water, main frame is so as to drawing the subsoil water after declining
The data of position；When level of ground water rises, by data transfer to main frame, Framework computing goes out measurement apparatus distance to measurement apparatus
The height of the water surface, so as to draw the data of the level of ground water after rising, this level of ground water real-time follow-up device being capable of dynamic
The change of real-time follow-up level of ground water, is adapted for popularization and application.
Description of the drawings
In order to be illustrated more clearly that this utility model specific embodiment or technical scheme of the prior art, below will be right
The accompanying drawing to be used needed for specific embodiment or description of the prior art is briefly described, it should be apparent that, describe below
In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, can be with according to these other accompanying drawings of accompanying drawings acquisition.
A kind of overall structure diagram of level of ground water real-time follow-up device that Fig. 1 is provided for this utility model；
The structural representation of shell in a kind of level of ground water real-time follow-up device that Fig. 2 is provided for this utility model；
The structural representation of measurement apparatus in a kind of level of ground water real-time follow-up device that Fig. 3 is provided for this utility model
Figure；
The structure of hydraulic pressure sensor is shown in a kind of level of ground water real-time follow-up device that Fig. 4 is provided for this utility model
It is intended to.
Reference：
1- data external-connected ports；2- main frames；3- pulse codrs；
4- directive wheels；5- drivewheels；6- motor；
7- shells；8- connects electric wire；9- measurement apparatus；
701- horizontal bases；702- unwrapping wire hole；703- is oriented to wheel carrier；
704- active wheel carriers；705- electric cases；706- housings；
901- measurement apparatus shells；902- wire seal lids；903- hydraulic pressure sensors；
904- water-sensitive sensors；905- permeable holes.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described
Embodiment is a part of embodiment of this utility model, rather than the embodiment of whole.Based on the embodiment in this utility model, this
The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality
Novel protected scope.
In description of the present utility model, it should be noted that term " " center ", " on ", D score, "left", "right", " perpendicular
Directly ", the orientation or position relationship of the instruction such as " level ", " interior ", " outward " is, based on orientation shown in the drawings or position relationship, to be only
For the ease of describe this utility model and simplify description, rather than indicate or imply indication device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.Additionally, term " the
One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicating or implying relative importance.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integratedly
Connection；Can be mechanically connected, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning of the language in this utility model.
Embodiment one：
In the alternative of the present embodiment, as shown in Figure 1 and Figure 2, the present embodiment provide a kind of level of ground water in real time with
Track measurement apparatus, including：
Shell 7, the bottom of shell 7 is provided with unwrapping wire hole 702；
Control device, control device includes data external-connected port 1, main frame 2 and pulse codr 3, the He of data external-connected port 1
Pulse codr 3 is electrically connected with main frame 2, and main frame 2 is arranged on inside shell 7；
Take-up and pay-off device, take-up and pay-off device include directive wheel 4, drivewheel 5 and motor 6, directive wheel 4 and drivewheel 5 it is equal
Positioned at the inside of shell 7 and the diameter parallel of the two, motor 6 is electrically connected with main frame 2；
Measurement apparatus 9, measurement apparatus 9 are located at the lower section of unwrapping wire hole 702, and measurement apparatus 9 are connected by connection electric wire 8 with main frame 2
Connect, connection electric wire 8 through unwrapping wire hole 702, take around through directive wheel 4 and being wrapped on drivewheel 5.
In the present embodiment, shell 7 is shaped as cylindrical shape, the diameter with diameter greater than well head of its bottom surface, unwrapping wire hole
702 bottom centre for being arranged on shell 7, when using, by this device well head are positioned over, and are made in the alignment well head of unwrapping wire hole 702
Heart position.
After switching on power, motor 6 is controlled by main frame 2 and is worked, motor 6 drives drivewheel 5 to rotate, and makes to be coiled in master
Connection electric wire 8 on driving wheel 5 is able to folding and unfolding, and connection electric wire 8 connects through directive wheel 4, through unwrapping wire hole 702 and with measurement apparatus 9
Connect, the axis of directive wheel 4 and the diameter parallel of drivewheel 5, during connection 8 folding and unfolding of electric wire, drive the synchronous axial system of directive wheel 4, measurement
Device 9 is moved up and down with the folding and unfolding of connection electric wire 8 in well, and to level of ground water dynamic realtime tracking is carried out.
Measurement apparatus 9 are transferred by the bottom position of housing 706, until it is immersed in certain distance in subsoil water, measurement
To hydraulic pressure data signal be transferred to main frame 2 by connecting electric wire 8, main frame 2 thus draw measurement apparatus 9 be located at below the water surface away from
From, during measurement apparatus 9 are transferred, the number of turns that the record directive wheel 4 of pulse codr 3 is rotated, and transfer data to master
Thus machine 2, main frame 2 calculates the length of the connection decentralization of electric wire 8, and then draws height of the distance from groundwater from well head, by data
External-connected port 1 can read the level of ground water data in main frame 2.
When underground water level decreasing, the hydraulic signal of change is transferred to main frame 2 by measurement apparatus 9, and main frame 2 passes through motor
6 control drivewheels 5 continue to transfer measurement apparatus 9, make measurement apparatus 9 be immersed in certain distance in subsoil water, main frame 2 so as to
Draw the data of the level of ground water after declining.
When level of ground water rises, the hydraulic signal of change is transferred to main frame 2 by measurement apparatus 9, main frame 2 so as to draw on
The data of the level of ground water after rising.
In the alternative of the present embodiment, shell 7 includes horizontal base 701, housing 706, is oriented to wheel carrier 703 and active
Wheel carrier 704, horizontal base 701 is discoid, and housing 706 is arranged on horizontal base 701, is oriented to wheel carrier 703 and active wheel carrier
704 being radially arranged on horizontal base 701 along horizontal base 701.In the present embodiment, wheel carrier 703 and active wheel carrier are oriented to
704 being radially arranged along horizontal base 701, can make connection electric wire 8 along the radial motion of horizontal base 701, then by unwrapping wire hole 702
Decentralization, is easy to connect the folding and unfolding of electric wire 8；Housing 706 is arranged on the upper surface of horizontal base 701, the device inside a protection
Effect.
In the alternative of the present embodiment, directive wheel 4 is arranged on guiding wheel carrier 703, and drivewheel 5 is arranged on drivewheel
On frame 704.In the present embodiment, directive wheel 4 and drivewheel 5 are separately positioned on guiding wheel carrier 703 and active wheel carrier 704, are led
To the axis and the diameter parallel of drivewheel 5 of wheel 4, further the axis of the two can be perpendicular to the radius of horizontal base 701, the company of making
Connect wires 8 folding and unfolding it is more smooth.
In the alternative of the present embodiment, also including electric case 705, electric case 705 is arranged on active wheel carrier 704
On, motor 6 is arranged in electric case 705.In the present embodiment, is provided with gear train in electric case 705, the gear train with
Gear engagement on the axle of drivewheel 5, motor 6 rotates drivewheel 5 by electric case 705.
In the alternative of the present embodiment, unwrapping wire hole 702 is arranged on the center of horizontal base 701.In the present embodiment,
Connection electric wire 8 is transferred by unwrapping wire hole 702, and unwrapping wire hole 702 is located at the center of horizontal base 701, that is, connect electric wire 8 by horizontal base
Transfer at 701 centers.
In the alternative of the present embodiment, data external-connected port 1 is arranged on the side wall of housing 706, and main frame 2 is arranged on
On horizontal base 701, pulse codr 3 is arranged on guiding wheel carrier 703.In the present embodiment, by the number on the side wall of housing 706
The level of ground water information in main frame 2 is can read according to external-connected port 1, the pulse codr 3 being oriented on wheel carrier 703 can record directive wheel
4 transfer and the number of turns of synchronous axial system with connection electric wire 8.
In the alternative of the present embodiment, as shown in figure 3, measurement apparatus 9 include that measurement apparatus shell 901, electric wire is close
Capping 902, hydraulic pressure sensor 903 and water-sensitive sensor 904, wire seal lid 902 is arranged on the top of measurement apparatus shell 901,
Hydraulic pressure sensor 903 is arranged on the bottom of measurement apparatus shell 901, and water-sensitive sensor 904 is arranged on the bottom of hydraulic pressure sensor 903.
In the present embodiment, measurement apparatus 9 are followed successively by from top to bottom wire seal lid 902, measurement apparatus shell 901, hydraulic pressure sensor
903 and water-sensitive sensor 904, during decentralization, water-sensitive sensor 904 touches at first subsoil water, and water-sensitive sensor 904 is met water and led
Electricity, dehydration insulation, transfer signals to main frame 2 when touching subsoil water, after the entirety of measurement apparatus 9 is immersed in subsoil water, water
Pressure sensor 903 by the hydraulic pressure information transfer for measuring to main frame 2, during main frame 2 is so as to calculate the water located underground of measurement apparatus 9
Depth.
When underground water level decreasing, and during less than measurement apparatus 9, main frame 2 continues to transfer measurement apparatus 9, makes measurement apparatus 9 again
Secondary to be immersed in certain distance in subsoil water, main frame 2 is so as to drawing the level of ground water after declining；It is when underground water level decreasing but not low
When hydraulic pressure sensor 903, being not required to continuation decentralization measurement apparatus 9 can still measure the level of ground water after declining.
In the alternative of the present embodiment, measurement apparatus shell 901 be cylindrical shape, the center of wire seal lid 902
Entrance hole is provided with, connection electric wire 8 is connected through entrance hole with water-sensitive sensor 904 and hydraulic pressure sensor 903.In the present embodiment
In, connect electric wire 8 and be located on the axis of measurement apparatus 9, make measurement apparatus 9 that vertical state can be kept in decentralization process, survey
Amount result is more accurate.
In the alternative of the present embodiment, as shown in figure 4, hydraulic pressure sensor 903 is provided with permeable hole 905.In this reality
In applying example, hydraulic pressure sensor 903 is provided with vertical with the axis of measurement apparatus shell 901, and insertion hydraulic pressure sensor 903 is saturating
Water hole 905, by the water gaging hydraulic pressure data in permeable hole 905.
Embodiment two：
In the alternative of the present embodiment, a kind of level of ground water real-time follow-up system that the present embodiment is provided, bag
Include the level of ground water real-time follow-up device as described in embodiment one.
In the present embodiment, the level of ground water data in main frame are read by data external-connected port, then is systematically remembered
Record, to realize tracking Decline or rise of groundwater level with carrying out dynamic realtime, measures, and analysis.
Finally it should be noted that：Various embodiments above is only illustrating the technical solution of the utility model, rather than it is limited
System；Although being described in detail to this utility model with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It still can modify to the technical scheme described in foregoing embodiments, either to which part or whole
Technical characteristic carries out equivalent；And these are changed or are replaced, the essence for not making appropriate technical solution departs from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (9)
1. a kind of level of ground water real-time follow-up device, it is characterised in that include：
Shell, the bottom of the shell is provided with unwrapping wire hole；
Control device, the control device include data external-connected port, main frame and pulse codr, the data external-connected port and
The pulse codr is electrically connected with the main frame, and the main frame is arranged on the enclosure；
Take-up and pay-off device, the take-up and pay-off device includes directive wheel, drivewheel and motor, the directive wheel and the drivewheel
Inside and the diameter parallel of the two of the shell are respectively positioned on, the motor is electrically connected with the main frame；
Measurement apparatus, the measurement apparatus are located at unwrapping wire hole lower section, and the measurement apparatus are by connection electric wire and the master
Machine connects, the connection electric wire through the unwrapping wire hole, take around through the directive wheel and being wrapped on the drivewheel.
2. level of ground water real-time follow-up device according to claim 1, it is characterised in that the shell includes level
Pedestal, housing, guiding wheel carrier and active wheel carrier, the horizontal base is discoid, and the housing is arranged on the horizontal base
On, it is described to be oriented to wheel carrier and active wheel carrier being radially arranged on the horizontal base along the horizontal base.
3. level of ground water real-time follow-up device according to claim 2, it is characterised in that the directive wheel is arranged on
On the guiding wheel carrier, the drivewheel is arranged on the active wheel carrier.
4. level of ground water real-time follow-up device according to claim 3, it is characterised in that also including electric case,
The electric case is arranged on the active wheel carrier, and the motor is arranged in the electric case.
5. level of ground water real-time follow-up device according to claim 3, it is characterised in that the unwrapping wire hole is arranged on
The center of the horizontal base.
6. level of ground water real-time follow-up device according to claim 2, it is characterised in that the data external-connected port
It is arranged on the side wall of the housing, the main frame is arranged on the horizontal base, the pulse codr is arranged on described
It is oriented on wheel carrier.
7. level of ground water real-time follow-up device according to claim 1, it is characterised in that the measurement apparatus include
Measurement apparatus shell, wire seal lid, hydraulic pressure sensor and water-sensitive sensor, the wire seal lid is arranged on the measurement dress
Cover top portion is put, the hydraulic pressure sensor is arranged on the measurement apparatus outer casing bottom, and the water-sensitive sensor is arranged on described
Hydraulic pressure sensor bottom.
8. level of ground water real-time follow-up device according to claim 7, it is characterised in that the measurement apparatus shell
For cylindrical shape, the wire seal lid is provided centrally with entrance hole, the connection electric wire through the entrance hole with it is described
Water-sensitive sensor and the hydraulic pressure sensor connect.
9. level of ground water real-time follow-up device according to claim 7, it is characterised in that on the hydraulic pressure sensor
It is provided with permeable hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621219950.4U CN206177406U (en) | 2016-11-11 | 2016-11-11 | Real -time tracking measurement device of ground water level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621219950.4U CN206177406U (en) | 2016-11-11 | 2016-11-11 | Real -time tracking measurement device of ground water level |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206177406U true CN206177406U (en) | 2017-05-17 |
Family
ID=58685153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621219950.4U Expired - Fee Related CN206177406U (en) | 2016-11-11 | 2016-11-11 | Real -time tracking measurement device of ground water level |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206177406U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106382968A (en) * | 2016-11-11 | 2017-02-08 | 中国矿业大学(北京) | Real-time tracking and measuring device for underground water level |
| CN106996291A (en) * | 2017-05-24 | 2017-08-01 | 中国矿业大学(北京) | Self-cleaning fluid level measuring instrument and its system |
| CN107153038A (en) * | 2017-06-08 | 2017-09-12 | 铁道第三勘察设计院集团有限公司 | Stratum osmotic coefficient quickly determines probe and its application method |
| CN111174451A (en) * | 2020-01-08 | 2020-05-19 | 中国矿业大学(北京) | Open type waste mine energy storage circulation system |
-
2016
- 2016-11-11 CN CN201621219950.4U patent/CN206177406U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106382968A (en) * | 2016-11-11 | 2017-02-08 | 中国矿业大学(北京) | Real-time tracking and measuring device for underground water level |
| CN106382968B (en) * | 2016-11-11 | 2018-01-26 | 中国矿业大学(北京) | Level of ground water real-time follow-up device |
| CN106996291A (en) * | 2017-05-24 | 2017-08-01 | 中国矿业大学(北京) | Self-cleaning fluid level measuring instrument and its system |
| CN106996291B (en) * | 2017-05-24 | 2018-08-17 | 中国矿业大学(北京) | Self-cleaning fluid level measuring instrument and its system |
| CN107153038A (en) * | 2017-06-08 | 2017-09-12 | 铁道第三勘察设计院集团有限公司 | Stratum osmotic coefficient quickly determines probe and its application method |
| CN111174451A (en) * | 2020-01-08 | 2020-05-19 | 中国矿业大学(北京) | Open type waste mine energy storage circulation system |
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