CN106768161B - Underground water level measurement method - Google Patents
Underground water level measurement method Download PDFInfo
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- CN106768161B CN106768161B CN201610997393.7A CN201610997393A CN106768161B CN 106768161 B CN106768161 B CN 106768161B CN 201610997393 A CN201610997393 A CN 201610997393A CN 106768161 B CN106768161 B CN 106768161B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 123
- 238000000691 measurement method Methods 0.000 title claims abstract description 27
- 239000003673 groundwater Substances 0.000 claims abstract description 66
- 238000005259 measurement Methods 0.000 claims abstract description 27
- 238000012546 transfer Methods 0.000 claims abstract description 12
- 230000007423 decrease Effects 0.000 claims abstract description 7
- 230000003578 releasing effect Effects 0.000 claims abstract description 4
- 239000000523 sample Substances 0.000 claims description 27
- 238000007689 inspection Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 5
- 238000005065 mining Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000006424 Flood reaction Methods 0.000 description 1
- 206010021036 Hyponatraemia Diseases 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
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
- G01F23/14—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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- General Physics & Mathematics (AREA)
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Abstract
The invention discloses a kind of underground water level measurement methods, and by measuring device free releasing to well, when measuring device touches groundwater level, the decentralization length of record connection electric wire can obtain level of ground water；After measuring device touches groundwater level, continues to stop decentralization after decentralization measuring device is located at the following certain distance of the water surface to it, according to hydraulic pressure numerical value, measuring device can be obtained in water surface distance below through conversion；When level of ground water decline, the hydraulic pressure numerical value that measuring device measures becomes smaller, and continues to transfer measuring device, until measuring device is located at the same distance of the water surface or less, continues the length of decentralization according to connection electric wire, level of ground water can be obtained by being computed；When level of ground water rises, the hydraulic pressure numerical value that measuring device measurement obtains becomes larger, and according to the hydraulic pressure numerical value after variation, obtains measuring device in water surface distance below, level of ground water can be obtained by being computed.Underground water level measurement method of the invention can carry out real-time follow-up in WATER LEVEL CHANGES.
Description
Technical field
The present invention relates to underground water level measurement technical fields, more particularly to a kind of underground water level measurement method.
Background technique
The relationship of underground water and the mankind are very close, and well water and spring are the most underground water of mankind's routine use, occupy
Irreplaceable status.But, underground water will also result in some harm, such as underground dilutional hyponatremia, railway, highway can be caused to collapse
It falls into, floods mining area tunnel, form marshland etc..
Along with the mankind, movable breadth and depth gradually expands and deepens on earth, superficial part and Deep Groundwater resource
Influenced 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 is shown: North China Plain phreatic water comprehensive quality it is whole compared with
Difference, and pollution is more serious, unpolluted underground 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 influences groundwater run off also more significant.For example, most of oil exploitations are all in the world
It can be pressurizeed using groundwater resources, the oil body of equal volume is depressed into make a profit and use by earth's surface with this, meets and contains in coal mining
Water layer can draw water pressure release (meet water table when Opencut coal mine mining using drainage well and carry out drainage) in advance, then working seam.
It can be seen that mankind's activity is very huge to Effect of Underground Water Level, in some instances it may even be possible to lead to lithic drainage disorder and decrease or even whole
Layer underground water disappears, this proposes larger challenge to the life in region, industrial water source, if dealing with improperly, it will cause people
Member, property massive losses.
Currently, the measurement for level of ground water, domestic and international relevant unit only to respective subject knowledge and purposes very
Limited apparatus is used, and the device that can not automatically track level of ground water in detecting shaft occurs.For example, when flatly
After inspection well is got through, is just transferred using limnimeter to water layer, limnimeter is obtained apart from water surface elevation by sensing device, then lead 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 self constructions it is influenced, can not obtain time and the sky of level of ground water true and reliablely
Between change.As it can be seen that for the research and development for the intelligent underground water level measuring arrangement that can carry out real-time tracking with water surface fluctuation in inspection well
With use, be very necessary.
But existing dip meter device and device, can not accomplish with level of ground water carry out dynamic realtime with
Track can not be accomplished precisely, rapidly to measure in large-scale mining activities, oil field development, and in mankind's activity close quarters operation
And data processing, limit development process.
Therefore, have can with Decline or rise of groundwater level and real-time intelligent tracking measurement and earth's surface wellhead equipment in real time to measurement
The exploitation that instrument electronic signal carries out a full set of measurement method and measuring device of functions such as digitized processing and port data output is aobvious
It obtains particularly important.
Summary of the invention
The purpose of the present invention is to provide a kind of underground water level measurement method, with solve it is existing in the prior art cannot be with
Decline or rise of groundwater level and the technical issues of carry out dynamic realtime tracking measurement.
To achieve the goals above, the invention adopts the following technical scheme:
A kind of underground water level measurement method provided by the invention, comprising:
Step 1, it presets, the measuring device for being used to measure groundwater level is placed in the center of inspection well well head；
Step 2, it transfers, it, will be described by the connection electric wire for being used for transmission signal being electrically connected with the measuring device
In measuring device free releasing to well, when the measuring device touches groundwater level, record under the connection electric wire
Degree of lengthening h2, it is known that the length of the measuring device is h1, level of ground water is depth of the groundwater level apart from well head, that is, underground
Water level H=h1+h2；
Step 3, stop decentralization, after the measuring device touches groundwater level, continue to transfer the measuring device
Stop decentralization after being located at the following certain distance of the water surface to it, according to the hydraulic pressure numerical value that the measuring device measurement obtains, obtains institute
Measuring device is stated in water surface distance below, recording this distance is h3；
Step 4, when level of ground water declines, the hydraulic pressure numerical value that the measuring device measurement obtains becomes smaller, and continues to transfer institute
Measuring device is stated, until the measuring device is h in water surface distance below3, record the length that the connection electric wire continues decentralization
Spend △ h2, at this point, level of ground water is H=h1+h2+△h2；
Step 5, when level of ground water rises, the hydraulic pressure numerical value that the measuring device measurement obtains becomes larger, after variation
Hydraulic pressure numerical value, obtain the measuring device in water surface distance △ h below3, at this point, level of ground water is H=h1+h2+h3-△
h3。
Further, when level of ground water declines but is not below the measuring device, what the measuring device measurement obtained
Hydraulic pressure numerical value becomes smaller but greater than zero, according to the hydraulic pressure numerical value after variation, obtains the measuring device in water surface distance △ below
h3, at this point, level of ground water is H=h1+h2+h3-△h3。
Further, the measuring device includes measuring device shell, wire seal lid, hydraulic pressure sensor and water-sensitive sensing
Device, in the measuring device cover top portion, the hydraulic pressure sensor is arranged in the measuring device for the wire seal lid setting
Outer casing bottom, the water-sensitive sensor are arranged in the hydraulic pressure sensor bottom.
Further, the connection electric wire passes through the wire seal lid and the hydraulic pressure sensor and the water-sensitive senses
Device is electrically connected.
Further, main circuit board, the main circuit board and connection electricity are fixedly connected on the hydraulic pressure sensor
Line is electrically connected.
Further, the hydraulic pressure sensor is internally provided with pressure sensing piece, the pressure sensing piece and the main electricity
Road plate is electrically connected.
Further, permeable hole is provided on the side wall of the hydraulic pressure sensor, the quantity of the permeable hole is 4, phase
The axis of the adjacent permeable hole is mutually perpendicular to.
Further, the water-sensitive sensor internal is provided with circuit board, and the circuit board and the main circuit board are electrical
Connection；
Be electrically connected with first electrode probe and second electrode probe on the circuit board, the first electrode probe from
The surface of the water-sensitive sensor is pierced by with the free end of the second electrode probe by holding.
Further, between the first electrode probe and the second electrode probe and the surface of the water-sensitive sensor
It is provided with insulated enclosure circle.
Underground water level measurement method provided by the invention, measuring device with connection electric wire folding and unfolding in well on move down
It is dynamic, dynamic realtime tracking is carried out to level of ground water, after measuring device touches the water surface, signal is fed back by connection electric wire, according to even
It connects wires the length of decentralization, show that the data of level of ground water, measuring device are then immersed in certain distance in underground water, work as underground
When water level decreasing, continue to transfer measuring device, until measuring device is immersed in certain distance in underground water, according to connection electricity
Line continues the length of decentralization, is computed the data of the level of ground water after obtaining decline, when level of ground water rises, is filled according to measurement
Set the height apart from the water surface, obtain rise after level of ground water data, this level of ground water measurement method can dynamic realtime with
Track measures the variation of level of ground water, is adapted for promoting and applying.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of application schematic diagram of underground water level measurement method provided by the invention；
Fig. 2 is the structural schematic diagram of measuring device in a kind of underground water level measurement method provided by the invention；
Fig. 3 is the structural blast schematic diagram of measuring device in a kind of underground water level measurement method provided by the invention；
Fig. 4 is the structural schematic diagram of hydraulic pressure sensor in a kind of underground water level measurement method provided by the invention；
Fig. 5 is the structural schematic diagram of water-sensitive sensor in a kind of underground water level measurement method provided by the invention.
Appended drawing reference:
1- connection electric wire；2- wire seal lid；3- measuring device shell；
4- hydraulic pressure sensor；5- water-sensitive sensor；6- main circuit board；
7- permeable hole；8- circuit board；9- first electrode probe；
10- second electrode probe；11- measuring device.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Embodiment one:
In the optinal plan of the present embodiment, as shown in Figure 1, a kind of underground water level measurement method provided in this embodiment,
Include:
Step 1, it presets, the measuring device 11 for being used to measure groundwater level is placed in the centre bit of inspection well well head
It sets；
Step 2, it transfers, by the connection electric wire 1 for being used for transmission signal being electrically connected with measuring device 11, measurement is filled
It sets in 11 free releasings to well, when measuring device 11 touches groundwater level, the decentralization length h of record connection electric wire 12,
The length of known measuring device 11 is h1, level of ground water is depth of the groundwater level apart from well head, that is, level of ground water H=h1+
h2；
Step 3, stop decentralization, after measuring device 11 touches groundwater level, continue to transfer measuring device 11 to its
Stop decentralization after the following certain distance of the water surface, obtained hydraulic pressure numerical value is measured according to measuring device 11, obtains measuring device
11 in water surface distance below, and recording this distance is h3；
Step 4, when level of ground water declines, measuring device 11 measures obtained hydraulic pressure numerical value and becomes smaller, and continues decentralization measurement
Device 11, until measuring device 11 is h in water surface distance below3, record the length △ h that connection electric wire 1 continues decentralization2, this
When, level of ground water H=h1+h2+△h2；
Step 5, when level of ground water rises, measuring device 11 measures obtained hydraulic pressure numerical value and becomes larger, after variation
Hydraulic pressure numerical value obtains measuring device 11 in water surface distance △ h below3, at this point, level of ground water is H=h1+h2+h3-△h3。
In the optinal plan of the present embodiment, when level of ground water declines but is not below measuring device 11, measuring device 11
The hydraulic pressure numerical value that measurement obtains becomes smaller but greater than zero, according to the hydraulic pressure numerical value after variation, obtains measuring device 11 below the water surface
Distance △ h3, at this point, level of ground water is H=h1+h2+h3-△h3。
In the optinal plan of the present embodiment, as shown in Fig. 2, measuring device 11 includes measuring device shell 3, wire seal
Lid 2, hydraulic pressure sensor 4 and water-sensitive sensor 5, the setting of wire seal lid 2 are set in 3 top of measuring device shell, hydraulic pressure sensor 4
It sets in 3 bottom of measuring device shell, water-sensitive sensor 5 is arranged in 4 bottom of hydraulic pressure sensor.
In the optinal plan of the present embodiment, connection electric wire 1 passes through wire seal lid 2 and hydraulic pressure sensor 4 and water-sensitive passes
Sensor 5 is electrically connected.
In the present embodiment, wire seal lid 2, measuring device shell 3, hydraulic pressure sensor 4 and water-sensitive sensor 5 are arrived from above
Under be sequentially connected, connection electric wire 1 pass through wire seal lid 2, into measuring device shell 3 and with hydraulic pressure sensor 4 and water-sensitive
Sensor 5 is electrically connected, and transfers measuring device 11 by well head, and with the folding and unfolding of connection electric wire 1, measuring device 11 is upper and lower in well
It is mobile, real-time measurement is carried out to level of ground water.
When measuring device 11 touches the water surface, water-sensitive sensor 5 is fed back signal by connection electric wire 1, according to connection electricity
The decentralization length h of line 12And the length h of known measuring device 111, can obtain level of ground water H=h1+h2。
Connection electric wire 1 continues to transfer, and stops decentralization after making the following certain distance of the water surface of the water located underground of measuring device 11,
Hydraulic pressure sensor 4 measures water pressure data, it can thus be concluded that the distance between measuring device 11 and the water surface h out3。
When level of ground water decline, measuring device 11 measures obtained hydraulic pressure numerical value and becomes smaller, and continues to transfer measuring device 11,
Until measuring device 11 is h in water surface distance below3, record the length △ h that connection electric wire 1 continues decentralization2, at this point, underground water
Position is H=h1+h2+△h2, the method is suitable for level of ground water and drops to the situation of 11 or less measuring device, i.e. hydraulic pressure numerical value becomes
The case where being zero.
In addition, measuring device 11 measures obtained hydraulic pressure numerical value when level of ground water declines but is not below hydraulic pressure sensor 4
Become smaller but be greater than zero, according to the hydraulic pressure numerical value after variation, obtain measuring device 11 in water surface distance △ h below3, at this point, ground
Lower water level is H=h1+h2+h3-△h3。
This level of ground water measurement method, measurement data is accurate, and error is smaller, and is influenced by environmental factor smaller.
In the present embodiment, measuring device shell 3 is cylindrical shape, and the measuring device shell 3 of cylindrical shape is conducive to this
Device moves up and down in water, and movement is smooth, and after the arrival following certain distance of the water surface, is easy holding position and stablizes, make to measure
Data are more acurrate.
Hydraulic pressure sensor 4 is round table-like, the diameter of section phase of the basal diameter and measuring device shell 3 of hydraulic pressure sensor 4
Together, the bottom surface of hydraulic pressure sensor 4 is connected to the bottom of measuring device shell 3.In the present embodiment, round table-like hydraulic pressure sensor
4 are conducive to the decentralization of the present apparatus in water, and in two planes up and down of hydraulic pressure sensor 4, biggish area is bottom surface, and area is smaller
It is top surface, the bottom surface of hydraulic pressure sensor 4 is in upper, top surface under, and its underrun is threaded in measuring device shell 3
Bottom, and junction is equipped with sealing rubber ring.
In the optinal plan of the present embodiment, as shown in figure 3, being fixedly connected with main circuit on the bottom surface of hydraulic pressure sensor 4
Plate 6, main circuit board 6 are electrically connected with electric wire 1 is connect.In the present embodiment, electric wire 1, hydraulic pressure sensor 4 and water-sensitive sensing are connected
Device 5 is electrically connected with main circuit board 6, and the effect of main circuit board 6 mainly carries out signal transmitting.
Fixing piece is provided on the bottom surface of hydraulic pressure sensor 4, the end of main circuit board 6 is bolted in fixing piece
On, thus main circuit board 6 is fixed on inside measuring device shell 3.
In the optinal plan of the present embodiment, hydraulic pressure sensor 4 is internally provided with pressure sensing piece, pressure sensing piece and master
Circuit board 6 is electrically connected.
In the optinal plan of the present embodiment, as shown in figure 4, being provided with permeable hole 7 on the side wall of hydraulic pressure sensor 4, thoroughly
The axis in water hole 7 is perpendicular to the axis of measuring device shell 3, and the quantity of permeable hole 7 is 4, and the axis of adjacent permeable hole 7 is mutual
Vertically.In the present embodiment, the axis of adjacent permeable hole 7 is mutually perpendicular to, and the axis of each permeable hole 7 is each perpendicular to measurement dress
The axis of shell 3 is set, hydraulic pressure sensor 4 is located at the top of permeable hole 7, measures the hydraulic pressure of the water in permeable hole 7, measurement data is more
Accurately.
In the present embodiment, water-sensitive sensor 5 is round table-like, basal diameter and the hydraulic pressure sensor 4 of water-sensitive sensor 5
Top surface diameter is identical, and the bottom surface of water-sensitive sensor 5 is connected on the top surface of hydraulic pressure sensor 4.Round table-like water-sensitive sensor 5 is same
Sample is conducive to the present apparatus moving up and down in water, and in two planes up and down of water-sensitive sensor 5, biggish area is bottom surface, face
It is top surface that product is lesser, and the bottom surface of water-sensitive sensor 5 is in upper, top surface under, and the top surface of its bottom surface and hydraulic pressure sensor 4 connects
It connects, connection type is to be threadedly coupled or be interference fitted connection.
In the optinal plan of the present embodiment, as shown in figure 5, water-sensitive sensor 5 is internally provided with circuit board 8, circuit board 8
It is electrically connected with main circuit board 6；
First electrode probe 9 and second electrode probe 10, the freedom of first electrode probe 9 are electrically connected on circuit board 8
End and the free end of second electrode probe 10 are pierced by the top surface of water-sensitive sensor 5.In the present embodiment, first electrode probe 9
It is that one end and circuit board 8 are electrically connected with second electrode probe 10, the top surface that the other end passes through water-sensitive sensor 5 is located at water-sensitive
Outside sensor 5, length of the first electrode probe 9 beyond 5 top surface of water-sensitive sensor is more than that second electrode probe 10 exceeds water-sensitive
The length of 5 top surface of sensor, two electrode catheters are metal electrode probe.
When two electrode catheters contact underground water simultaneously, conductive because containing a large amount of impurities in underground water, circuit is connect
Logical, circuit board 8 issues touching water power signal, and when the dehydration of one of two electrode catheters, i.e. two electrode catheters are not connected by underground water
Logical, then circuit disconnects, and circuit board 8 issues dehydration electric signal.
In the optinal plan of the present embodiment, the top of first electrode probe 9 and second electrode probe 10 and water-sensitive sensor 5
Insulated enclosure circle is provided between face.In the present embodiment, the purpose that insulated enclosure circle is arranged is: in first electrode probe
Insulation processing is carried out between 9 and second electrode probe 10 and the top surface of water-sensitive sensor 5, to avoid failure when present apparatus use.
In the present embodiment, wire seal lid 2 is provided centrally with entrance hole, and connection electric wire 1 passes through entrance hole and main electricity
Road plate 6 is electrically connected.The setting of entrance hole is located at connection electric wire 1 on the axis of measuring device shell 3, so that the present apparatus be made to exist
It is able to maintain vertical state in decentralization process, is conducive to the present apparatus moving up and down in well, reaches the water surface an or less spacing
From rear, the present apparatus is in a vertical state can also to make measurement result more accurate.
Embodiment two:
In the optinal plan of the present embodiment, a kind of level of ground water applied as described in embodiment one provided in this embodiment
The underground water level measurement device of measurement method, including measuring device 11, connection electric wire 1, host and take-up and pay-off device.
In the present embodiment, take-up and pay-off device includes directive wheel, driving wheel and motor, and connection electric wire 1 and host are electrical
Connection, connection electric wire 1 are taken around process directive wheel and are wrapped on driving wheel.
After powering on, electric motor operation is controlled by host, motor drives driving wheel rotation, makes to be coiled in driving wheel
On connection electric wire 1 be able to folding and unfolding, connection electric wire 1 connect by directive wheel with measuring device 11, the axis of directive wheel and active
The axis of wheel is parallel, when connecting 1 folding and unfolding of electric wire, directive wheel is driven to rotate synchronously, measuring device 11 is with the folding and unfolding for connecting electric wire 1
It is moved up and down in well, dynamic real-time measurement is carried out to level of ground water.
Measuring device 11 is transferred by the center of well head, in decentralization process, is compiled with the pulse that host is electrically connected
The circle number of code device record directive wheel rotation, and host is transferred data to, thus host calculates the length that connection electric wire 1 is transferred
Degree.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (9)
1. a kind of underground water level measurement method characterized by comprising
S1 presets, the measuring device for being used to measure groundwater level is placed in the center of inspection well well head；
S2, decentralization, by the connection electric wire for being used for transmission signal being electrically connected with the measuring device, by the measuring device
In free releasing to well, when the measuring device touches groundwater level, the decentralization length h of the connection electric wire is recorded2,
The length of the known measuring device is h1, level of ground water is depth of the groundwater level apart from well head, that is, level of ground water H=h1
+h2；
S3 stops decentralization, after the measuring device touches groundwater level, continues to transfer the measuring device and is located to it
Stop decentralization after the following certain distance of the water surface, according to the hydraulic pressure numerical value that the measuring device measurement obtains, obtains the measurement dress
It sets in water surface distance below, recording this distance is h3；
S4, when level of ground water decline, the hydraulic pressure numerical value that the measuring device measurement obtains becomes smaller, and continues to transfer the measurement dress
It sets, until the measuring device is h in water surface distance below3, record the length △ h that the connection electric wire continues decentralization2, this
When, level of ground water H=h1+h2+△h2；
S5, when level of ground water rises, the hydraulic pressure numerical value that the measuring device measurement obtains becomes larger, according to the hydraulic pressure number after variation
Value, obtains the measuring device in water surface distance △ h below3, at this point, level of ground water is H=h1+h2+h3-△h3。
2. underground water level measurement method according to claim 1, which is characterized in that when level of ground water declines but is not below institute
When stating measuring device, the hydraulic pressure numerical value that the measuring device measurement obtains becomes smaller but is greater than zero, according to the hydraulic pressure numerical value after variation,
Obtain the measuring device in water surface distance △ h below3, at this point, level of ground water is H=h1+h2+h3-△h3。
3. underground water level measurement method according to claim 2, which is characterized in that the measuring device includes measuring device
Shell, wire seal lid, hydraulic pressure sensor and water-sensitive sensor, the wire seal lid are arranged on measuring device shell top
Portion, the hydraulic pressure sensor setting are sensed in the measuring device outer casing bottom, the water-sensitive sensor setting in the hydraulic pressure
Device bottom.
4. underground water level measurement method according to claim 3, which is characterized in that the connection electric wire passes through the electric wire
Sealing cover and the hydraulic pressure sensor and the water-sensitive sensor are electrically connected.
5. underground water level measurement method according to claim 4, which is characterized in that be fixedly connected on the hydraulic pressure sensor
There is main circuit board, the main circuit board and the connection electric wire are electrically connected.
6. underground water level measurement method according to claim 5, which is characterized in that the hydraulic pressure sensor is internally provided with
Pressure sensing piece, the pressure sensing piece and the main circuit board are electrically connected.
7. underground water level measurement method according to claim 6, which is characterized in that set on the side wall of the hydraulic pressure sensor
It is equipped with permeable hole, the quantity of the permeable hole is 4, and the axis of the adjacent permeable hole is mutually perpendicular to.
8. underground water level measurement method according to claim 5, which is characterized in that the water-sensitive sensor internal is provided with
Circuit board, the circuit board and the main circuit board are electrically connected；
First electrode probe and second electrode probe, the free end of the first electrode probe are electrically connected on the circuit board
The surface of the water-sensitive sensor is pierced by with the free end of the second electrode probe.
9. underground water level measurement method according to claim 8, which is characterized in that the first electrode probe and described
Insulated enclosure circle is provided between two electrode catheters and the surface of the water-sensitive sensor.
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| CN201610997393.7A CN106768161B (en) | 2016-11-11 | 2016-11-11 | Underground water level measurement method |
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