CN106323408A - Intelligent underground water level measuring instrument - Google Patents
Intelligent underground water level measuring instrument Download PDFInfo
- Publication number
- CN106323408A CN106323408A CN201610997859.3A CN201610997859A CN106323408A CN 106323408 A CN106323408 A CN 106323408A CN 201610997859 A CN201610997859 A CN 201610997859A CN 106323408 A CN106323408 A CN 106323408A
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- Prior art keywords
- water
- hydraulic pressure
- pressure sensor
- level
- sensitive sensor
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/0023—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm with a probe suspended by a wire or thread
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/04—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by dip members, e.g. dip-sticks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses an intelligent underground water level measuring instrument. The intelligent underground water level measuring instrument comprises a measuring instrument shell, a connecting wire, a wire sealing cover, a water pressure sensor and a water-sensitive sensor, wherein the wire sealing cover is arranged at the top of the measuring instrument shell, the water pressure sensor is arranged at the bottom of the measuring instrument shell, the water-sensitive sensor is arranged at the bottom of the water pressure sensor, and the connecting wire penetrates through the wire sealing cover to be electrically connected with the water pressure sensor and the water-sensitive sensor. The intelligent underground water level measuring instrument has the advantages that the intelligent underground water level measuring instrument moves up and down in a well along with collection and release of the connecting wire and measures the underground water level dynamically in real time, the water-sensitive sensor gives a signal when contacting with the water surface, the water pressure sensor measures water pressure data after the instrument is immersed into the water surface of underground water, the height from the instrument to the water surface can be obtained, and underground water level data can be obtained according to the connecting wire length below a well mouth; the intelligent underground water level measuring instrument is high in measuring accuracy and simple in structure and has popularization and application value.
Description
Technical field
The present invention relates to level measuring technical field, particularly relate to a kind of level of ground water intelligent measuring apparatus.
Background technology
Subsoil water is very close with the relation of the mankind, and well water and spring water are the subsoil water that mankind's routine use is most, occupy
Irreplaceable status.But, subsoil water will also result in some harm, as subsoil water is too much, railway, highway can be caused to collapse
Fall into, flood tunnel, mining area, form marshland etc..
The breadth and depth movable on earth along with the mankind progressively expands and deepens, superficial part and Deep Groundwater resource
All 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 " evaluation of North China Plain Groundwater Contamination Investigation " achievement shows: North China Plain phreatic water comprehensive quality entirety is relatively
Difference, and pollute more serious, unpolluted subsoil water only accounts for the 55.87% of sampled point.Deep phreatic water comprehensive quality is the best
In phreatic water, pollute lighter.
Meanwhile, mankind's activity is the most notable on groundwater run off impact.Such as, the most most of oil exploitations are all
Groundwater resources can be utilized to pressurize, the oil body of equal volume is depressed into earth's surface with profit use with this, coal mining met and contains
Water layer can draw water in advance pressure release (during Opencut coal mine mining meet Water table use drainage well carry out drainage), working seam then.
As can be seen here, mankind's activity is the hugest 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, and this proposes bigger challenge, if dealing with improperly, it will cause people to life, the water for industrial use source in region
Member, the massive losses of property.
At present, domestic and international relevant unit utilizes respective subject knowledge, develops the apparatus that purposes is clear and definite, to subsoil water
Position measures.Such as, after a bite inspection well is got through, utilize limnimeter to transfer to water layer, obtain water by induction installation
Position instrument distance water surface elevation, then the height of water surface distance earth's surface well head is calculated by the wire length below well head.
But, existing dip meter device and device, easily by the shadow of the factors such as landform, stratum and construction itself
Ringing, the accuracy of measurement is relatively low, there is bigger error, and structure is more complicated.
Summary of the invention
It is an object of the invention to provide a kind of level of ground water intelligent measuring apparatus, to solve underground present in prior art
Level measurement device can not accurately measure level of ground water, and baroque technical problem.
To achieve these goals, the present invention is by the following technical solutions:
A kind of level of ground water intelligent measuring apparatus that the present invention provides, including measurement apparatus shell, connects electric wire, wire seal
Lid, hydraulic pressure sensor and water-sensitive sensor, described wire seal lid is arranged on described measurement apparatus cover top portion, and described hydraulic pressure passes
Sensor is arranged on described measurement apparatus outer casing bottom, and described water-sensitive sensor is arranged on bottom described hydraulic pressure sensor, described company
Connect wires and be electrically connected with described hydraulic pressure sensor and described water-sensitive sensor through described wire seal lid.
Further, described measurement apparatus shell is cylindrical shape.
Further, described hydraulic pressure sensor is round table-like, and the basal diameter of described hydraulic pressure sensor measures dress with described
The diameter of section putting shell is identical, and the bottom surface of described hydraulic pressure sensor is connected to the bottom of described measurement apparatus shell.
Further, the bottom surface of described hydraulic pressure sensor being fixedly connected with main circuit board, described main circuit board is with described
Connect electric wire to be electrically connected with.
Further, described hydraulic pressure sensor is internally provided with pressure sensing sheet, described pressure sensing sheet and described main electricity
Road plate is electrically connected with；
Being provided with permeable hole on the sidewall of described hydraulic pressure sensor, the axis of described permeable hole is perpendicular to described measurement apparatus
The axis of shell, the quantity of described permeable hole is 2, and the axis of 2 described permeable holes is mutually perpendicular to.
Further, described water-sensitive sensor is round table-like, and the basal diameter of described water-sensitive sensor passes with described hydraulic pressure
The end face diameter of sensor is identical, and the bottom surface of described water-sensitive sensor is connected on the end face of described hydraulic pressure sensor.
Further, described water-sensitive sensor internal is provided with circuit board, and described circuit board is electrical with described main circuit board
Connect；
Be electrically connected with the first electrode catheter and the second electrode catheter on described circuit board, described first electrode catheter from
The end face of described water-sensitive sensor is all passed by the free end of end and described second electrode catheter.
Further, between the end face of described first electrode catheter and described second electrode catheter and described water-sensitive sensor
It is provided with insulated enclosure circle.
Further, described wire seal lid be provided centrally with entrance hole, described connection electric wire pass described entrance hole
It is electrically connected with described main circuit board.
The level of ground water intelligent measuring apparatus that the present invention provides, including the wire seal lid being sequentially connected with from top to bottom, measurement
Crust of the device, hydraulic pressure sensor and water-sensitive sensor, also include connecting electric wire, connects electric wire and is entered measurement dress by wire seal lid
Putting enclosure and be electrically connected with hydraulic pressure sensor and water-sensitive sensor, this measuring instrument is along with connecting the folding and unfolding of electric wire in well
Moving up and down, level of ground water is carried out dynamic real-time measurement, after this measuring instrument touches the water surface, water-sensitive sensor sends letter
Number, after this measuring instrument is immersed in below groundwater level, hydraulic pressure sensor measures hydraulic pressure data, it follows that this measuring instrument away from
From the height of the water surface, further according to the length connecting electric wire below well head, draw the data message of level of ground water, this level of ground water
The accuracy that intelligent measuring apparatus is measured is higher, and error is little, and structure is relatively simple, is adapted for popularization and application.
Accompanying drawing explanation
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, below will be to specifically
In embodiment or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not paying creative work
Put, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
The overall structure schematic diagram of a kind of level of ground water intelligent measuring apparatus that Fig. 1 provides for the present invention；
The structural blast schematic diagram of a kind of level of ground water intelligent measuring apparatus that Fig. 2 provides for the present invention；
The structural representation of hydraulic pressure sensor in a kind of level of ground water intelligent measuring apparatus that Fig. 3 provides for the present invention；
The structural representation of water-sensitive sensor in a kind of level of ground water intelligent measuring apparatus that Fig. 4 provides for the present invention.
Reference:
1-connects electric wire；2-wire seal lid；3-measurement apparatus shell；
4-hydraulic pressure sensor；5-water-sensitive sensor；6-main circuit board；
7-permeable hole；8-circuit board；9-the first electrode catheter；
10-the second electrode catheter.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is clearly and completely described, it is clear that described enforcement
Example is a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under not making creative work premise, broadly falls into the scope of protection of the invention.
In describing the invention, it should be noted that term " " center ", " on ", D score, "left", "right", " vertically ",
Orientation or the position relationship of the instruction such as " level ", " interior ", " outward " they are based on orientation shown in the drawings or position relationship, merely to
Be easy to describe the present invention and simplifying describe rather than instruction or the hint device of indication or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.Additionally, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that indicate or hint relative importance.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " is installed ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be fixing connection, it is also possible to be to removably connect, or be integrally connected；Can
To be mechanical connection, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, can understand that above-mentioned term is at this with concrete condition
Concrete meaning in invention.
Embodiment one:
In the alternative of the present embodiment, as it is shown in figure 1, a kind of level of ground water intelligent measure that the present embodiment provides
Instrument, including measurement apparatus shell 3, connects electric wire 1, wire seal lid 2, hydraulic pressure sensor 4 and water-sensitive sensor 5, wire seal
Lid 2 is arranged on measurement apparatus shell 3 top, and hydraulic pressure sensor 4 is arranged on bottom measurement apparatus shell 3, and water-sensitive sensor 5 is arranged
Bottom hydraulic pressure sensor 4, connect electric wire 1 and be electrically connected with hydraulic pressure sensor 4 and water-sensitive sensor 5 through wire seal lid 2.
In the present embodiment, wire seal lid 2, measurement apparatus shell 3, hydraulic pressure sensor 4 and water-sensitive sensor 5 are arrived from above
Under be sequentially connected with, connect electric wire 1 through wire seal lid 2, enter in measurement apparatus shell 3 and with hydraulic pressure sensor 4 and water-sensitive
Sensor 5 is electrically connected with, well head transfer this device, and along with the folding and unfolding of connection electric wire 1, this device moves up and down in well, right
Level of ground water is measured in real time.
When this device touches the water surface, signal is fed back by water-sensitive sensor 5 by connecting electric wire 1, connects under electric wire 1 continuation
Put, make below the water surface of this device water located underground, hydraulic pressure sensor 4 measure hydraulic pressure data, thus can draw this device and water
Distance between face, further according to the length connecting electric wire 1 below the well head of record, just can draw level of ground water data, measure
Data are accurate, and error is less, and is affected less by environmental factors.
In the alternative of the present embodiment, measurement apparatus shell 3 is cylindrical shape.In the present embodiment, cylindrical shape
Measurement apparatus shell 3 be conducive to this device to move up and down in water, mobile smooth and easy, and to after the following certain distance of basal water table,
Easily holding position is stable, makes measurement data more accurate.
In the alternative of the present embodiment, hydraulic pressure sensor 4 is round table-like, the basal diameter of hydraulic pressure sensor 4 and survey
The diameter of section of amount crust of the device 3 is identical, and the bottom surface of hydraulic pressure sensor 4 is connected to the bottom of measurement apparatus shell 3.In this enforcement
In example, round table-like hydraulic pressure sensor 4 is conducive to this device transferring in water, in two planes up and down of hydraulic pressure sensor 4, face
Long-pending bigger for bottom surface, area less for end face, the bottom surface of hydraulic pressure sensor 4 upper, end face under, and its underrun spiral shell
Stricture of vagina is connected to the bottom of measurement apparatus shell 3, and junction is provided with sealing rubber ring.
In the alternative of the present embodiment, as in figure 2 it is shown, be fixedly connected with main circuit on the bottom surface of hydraulic pressure sensor 4
Plate 6, main circuit board 6 is electrically connected with being connected electric wire 1.In the present embodiment, electric wire 1, hydraulic pressure sensor 4 and water-sensitive sensing are connected
Device 5 is all electrically connected with main circuit board 6, and the effect of main circuit board 6 mainly carries out signal transmission.
Being provided with fixture on the bottom surface of hydraulic pressure sensor 4, the end of main circuit board 6 is bolted at fixture
On, thus main circuit board 6 is fixed on measurement apparatus shell 3 inside.
In the alternative of the present embodiment, as it is shown on figure 3, hydraulic pressure sensor 4 is internally provided with pressure sensing sheet, pressure
Vane is electrically connected with main circuit board 6；
Being provided with permeable hole 7 on the sidewall of hydraulic pressure sensor 4, the axis of permeable hole 7 is perpendicular to the axle of measurement apparatus shell 3
Line, the quantity of permeable hole 7 is 4, and the axis of adjacent permeable hole 7 is mutually perpendicular to.In the present embodiment, hydraulic pressure sensor 4 sidewall
On 4 permeable holes 7, its axis is each perpendicular to the axis of measurement apparatus shell 3, and all with the axis phase of measurement apparatus shell 3
Handing over, and the axis of adjacent permeable hole 7 is mutually perpendicular to, hydraulic pressure sensor 4 is positioned at the top of permeable hole 7, measures the water in permeable hole 7
Hydraulic pressure, measurement data is more accurate.
In the alternative of the present embodiment, water-sensitive sensor 5 is round table-like, the basal diameter of water-sensitive sensor 5 and water
The end face diameter of pressure sensor 4 is identical, and the bottom surface of water-sensitive sensor 5 is connected on the end face of hydraulic pressure sensor 4.At the present embodiment
In, round table-like water-sensitive sensor 5 is equally beneficial for this device moving up and down in water, water-sensitive sensor 5 two flat up and down
In face, area bigger for bottom surface, area less for end face, the bottom surface of water-sensitive sensor 5 upper, end face under, and its end
Face is connected with the end face of hydraulic pressure sensor 4, and connected mode is threaded or interference fit connects.
In the alternative of the present embodiment, as shown in Figure 4, water-sensitive sensor 5 is internally provided with circuit board 8, circuit board 8
It is electrically connected with main circuit board 6；
The first electrode catheter 9 and the second electrode catheter 10, the freedom of the first electrode catheter 9 it is electrically connected with on circuit board 8
The free end of end and the second electrode catheter 10 all passes the end face of water-sensitive sensor 5.In the present embodiment, the first electrode catheter 9
Being one end with the second electrode catheter 10 to be electrically connected with circuit board 8, the other end is positioned at water-sensitive through the end face of water-sensitive sensor 5
Sensor 5 is outside, and the first electrode catheter 9 exceeds water-sensitive beyond the length of water-sensitive sensor 5 end face more than the second electrode catheter 10
The length of sensor 5 end face, two electrode catheters are metal electrode probe.
When two electrode catheters contact subsoil water simultaneously, because containing a large amount of impurity in subsoil water, having electric conductivity, circuit connects
Logical, circuit board 8 sends tactile water power signal, and when the one dehydration in two electrode catheters, i.e. two electrode catheters are by subsoil water not even
Logical, then circuit disconnects, and circuit board 8 sends the dehydration signal of telecommunication.
In the alternative of the present embodiment, the first electrode catheter 9 and the second electrode catheter 10 and the top of water-sensitive sensor 5
Insulated enclosure circle it is provided with between face.In the present embodiment, the purpose arranging insulated enclosure circle is: at the first electrode catheter
9 and second carry out insulation processing between electrode catheter 10 and the end face of water-sensitive sensor 5, malfunctioning during to avoid this device to use.
In the alternative of the present embodiment, wire seal lid 2 be provided centrally with entrance hole, connect electric wire 1 pass into
String holes is electrically connected with main circuit board 6.In the present embodiment, the setting of entrance hole makes connection electric wire 1 be positioned at measurement apparatus shell 3
Axis on so that this device can keep vertical state in decentralization process, be conducive to this device in well on move down
Dynamic, after arriving the following certain distance of the water surface, this device is in vertical state also can make measurement result more accurate.
Embodiment two:
In the alternative of the present embodiment, a kind of level of ground water intelligent measuring systems that the present embodiment provides, including such as
Level of ground water intelligent measuring apparatus described in embodiment one.
In the present embodiment, also include main frame and take-up and pay-off device, wherein take-up and pay-off device include directive wheel, drivewheel and
Motor, connects electric wire 1 and is electrically connected with main frame, connects electric wire 1 and takes around through directive wheel and be wrapped on drivewheel.
After switching on power, by host computer control electric motor operation, motor drives drivewheel to rotate, and makes to be coiled in drivewheel
On connection electric wire 1 be able to folding and unfolding, connect electric wire 1 and be connected with this underground intelligent water level measuring instrument through directive wheel, directive wheel
Axis is parallel with the axis of drivewheel, when connecting electric wire 1 folding and unfolding, drives directive wheel synchronous axial system, level of ground water intelligent measuring apparatus
Along with the folding and unfolding connecting electric wire 1 moves up and down in well, level of ground water is carried out dynamic real-time measurement.
This underground intelligent water level measuring instrument is transferred by the center of well head, until it is immersed in subsoil water necessarily
Distance, the hydraulic pressure data signal that hydraulic pressure sensor 4 is measured is transferred to main frame by connecting electric wire 1, and main frame thus draws this underground
Intelligent water level measuring instrument is positioned at the distance of below the water surface, during this underground intelligent water level measuring instrument is transferred, with main frame electricity
Property the number of turns that rotates of the pulse codr record directive wheel that connects, and transfer data to main frame, main frame thus calculates connection
The length that electric wire 1 is transferred, and then draw the distance from groundwater height from well head.
When underground water level decreasing, and during less than this measuring instrument, the hydraulic signal of change is transferred to main frame by this measuring instrument, main
Machine continues to transfer this measuring instrument by Motor Control drivewheel so that it is be immersed in below groundwater level, main frame thus
Draw the data of the level of ground water after decline；When underground water level decreasing, but when being not below hydraulic pressure sensor 4, it is not required to continue to transfer
This measuring instrument the most still can record the level of ground water after decline.
When level of ground water rises, the hydraulic signal of change is transferred to main frame by this measuring instrument, main frame thus draw rising
After the data of level of ground water.
This water level measurement system can realize Decline or rise of groundwater level is measured, follows the tracks of and analyzed with carrying out dynamic realtime.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, it is not intended to limit；To the greatest extent
The present invention has been described in detail by pipe with reference to foregoing embodiments, it will be understood by those within the art that: it depends on
So the technical scheme described in foregoing embodiments can be modified, or the most some or all of technical characteristic is entered
Row equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from various embodiments of the present invention technology
The scope of scheme.
Claims (9)
1. a level of ground water intelligent measuring apparatus, it is characterised in that include measurement apparatus shell, connect electric wire, wire seal lid,
Hydraulic pressure sensor and water-sensitive sensor, described wire seal lid is arranged on described measurement apparatus cover top portion, and described hydraulic pressure senses
Device is arranged on described measurement apparatus outer casing bottom, and described water-sensitive sensor is arranged on bottom described hydraulic pressure sensor, described connection
Electric wire is electrically connected with through described wire seal lid with described hydraulic pressure sensor and described water-sensitive sensor.
Level of ground water intelligent measuring apparatus the most according to claim 1, it is characterised in that described measurement apparatus shell is cylinder
Body shape.
Level of ground water intelligent measuring apparatus the most according to claim 2, it is characterised in that described hydraulic pressure sensor is round platform
Shape, the basal diameter of described hydraulic pressure sensor is identical with the diameter of section of described measurement apparatus shell, described hydraulic pressure sensor
Bottom surface is connected to the bottom of described measurement apparatus shell.
Level of ground water intelligent measuring apparatus the most according to claim 3, it is characterised in that on the bottom surface of described hydraulic pressure sensor
Being fixedly connected with main circuit board, described main circuit board is electrically connected with the described electric wire that is connected.
Level of ground water intelligent measuring apparatus the most according to claim 4, it is characterised in that described hydraulic pressure sensor is internal to be arranged
Pressure sensing sheet, described pressure sensing sheet is had to be electrically connected with described main circuit board；
Being provided with permeable hole on the sidewall of described hydraulic pressure sensor, the axis of described permeable hole is perpendicular to described measurement apparatus shell
Axis, the quantity of described permeable hole is 4, and the axis of adjacent described permeable hole is mutually perpendicular to.
Level of ground water intelligent measuring apparatus the most according to claim 4, it is characterised in that described water-sensitive sensor is round platform
Shape, the basal diameter of described water-sensitive sensor is identical with the end face diameter of described hydraulic pressure sensor, the end of described water-sensitive sensor
Face is connected on the end face of described hydraulic pressure sensor.
Level of ground water intelligent measuring apparatus the most according to claim 6, it is characterised in that described water-sensitive sensor internal is arranged
Circuit board, described circuit board is had to be electrically connected with described main circuit board；
The first electrode catheter and the second electrode catheter, the free end of described first electrode catheter it is electrically connected with on described circuit board
With the end face that the free end of described second electrode catheter all passes described water-sensitive sensor.
Level of ground water intelligent measuring apparatus the most according to claim 7, it is characterised in that described first electrode catheter and described
It is provided with insulated enclosure circle between the end face of the second electrode catheter and described water-sensitive sensor.
Level of ground water intelligent measuring apparatus the most according to claim 4, it is characterised in that the center of described wire seal lid sets
Being equipped with entrance hole, described connection electric wire is electrically connected with through described entrance hole with described main circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610997859.3A CN106323408B (en) | 2016-11-11 | 2016-11-11 | Level of ground water intelligent measuring apparatus |
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| CN201610997859.3A CN106323408B (en) | 2016-11-11 | 2016-11-11 | Level of ground water intelligent measuring apparatus |
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| CN106323408A true CN106323408A (en) | 2017-01-11 |
| CN106323408B CN106323408B (en) | 2018-03-20 |
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| CN108534863B (en) * | 2018-07-18 | 2020-01-24 | 山东省交通规划设计院 | Geotechnical engineering reconnaissance water level survey device |
| CN113418648A (en) * | 2021-06-16 | 2021-09-21 | 山东省地质环境监测总站(山东省地质灾害防治技术指导中心) | Underground water wireless monitoring system and method |
| CN116678470A (en) * | 2023-08-03 | 2023-09-01 | 山东省地质矿产勘查开发局第二水文地质工程地质大队(山东省鲁北地质工程勘察院) | Underground water level observation equipment |
| CN116678470B (en) * | 2023-08-03 | 2023-10-27 | 山东省地质矿产勘查开发局第二水文地质工程地质大队(山东省鲁北地质工程勘察院) | Underground water level observation equipment |
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