WO2013162116A1 - 해안 지하수 모니터링 시스템 - Google Patents
해안 지하수 모니터링 시스템 Download PDFInfo
- Publication number
- WO2013162116A1 WO2013162116A1 PCT/KR2012/004176 KR2012004176W WO2013162116A1 WO 2013162116 A1 WO2013162116 A1 WO 2013162116A1 KR 2012004176 W KR2012004176 W KR 2012004176W WO 2013162116 A1 WO2013162116 A1 WO 2013162116A1
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- Prior art keywords
- measuring
- distance
- freshwater
- interface
- measurement sensor
- Prior art date
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
- G08C19/02—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
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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
- G01F23/18—Indicating, recording or alarm devices actuated electrically
-
- 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
- G01F23/30—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 floats
-
- 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
- G01F23/30—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 floats
- G01F23/64—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 floats of the free float type without mechanical transmission elements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
- G01S15/06—Systems determining the position data of a target
- G01S15/08—Systems for measuring distance only
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2209/00—Arrangements in telecontrol or telemetry systems
- H04Q2209/80—Arrangements in the sub-station, i.e. sensing device
- H04Q2209/84—Measuring functions
- H04Q2209/845—Measuring functions where the measuring is synchronized between sensing devices
Definitions
- the present invention relates to a coastal groundwater monitoring system.
- the groundwater level is lowered due to the excessive use of groundwater, which is contaminated by the inflow of brine (sea water) into the groundwater, thereby exposing the groundwater to the danger of not using not only drinking water but also agricultural or industrial water.
- brine brine
- groundwater observation wells that monitor groundwater changes are installed by installing wired or wireless measuring sensors that penetrate groundwater observation wells and measure groundwater level, temperature, and conductivity values.
- the freshwater interface (groundwater and brine interface) changes by two mechanisms.
- the first is a phenomenon in which the thickness of the freshwater layer is reduced, and the other is a phenomenon in which the thickness of the salt water layer is changed.
- the thickness of the freshwater layer may increase due to rainfall or decrease (thinner) due to nearby pumping activities.
- the brine layer changes as the sea level changes periodically due to tidal phenomena.
- the thickness of the freshwater layer becomes thinner and the saltwater layer becomes thicker than the reference point.
- the freshwater interface increases, and when the freshwater layer becomes thicker and the thickness of the saltwater layer decreases, the freshwater boundary falls.
- the present invention has been invented to solve this problem, by introducing a measurement sensor capable of measuring the freshwater interface and the distance measurement in freshwater to measure the distance between the freshwater interface position tracking device and the measuring sensor, and measuring the ground water surface
- the purpose of the warning is to limit the use of groundwater when there is a risk of seawater infiltration into the groundwater by measuring the change of freshwater lens thickness or the change of freshwater interface depth in real time.
- Coastal groundwater monitoring system for achieving the above object is a freshwater saltwater interface position tracking device which is inserted into the observation well to measure the groundwater in the coastal area and moves in accordance with the buoyancy change on the saltwater interface; And a first measuring sensor inserted into the observation well, the distance measuring unit being positioned above the salt water interface position tracking device and measuring a first distance from the salt water interface position tracking device.
- the measuring sensor may include a first transmitter for transmitting the measured first distance.
- the first measuring sensor is characterized in that it comprises a hydraulic pressure measuring unit capable of measuring the hydraulic pressure.
- the invention is characterized in that it comprises a second measuring sensor inserted into the observation well, installed in the atmosphere.
- the distance measuring unit is characterized in that it comprises a sound wave generator, a sound wave receiver or a laser generator and a laser receiver.
- the second measurement sensor is characterized in that it comprises an atmospheric pressure measuring unit for measuring the atmospheric pressure.
- the second measurement sensor is characterized in that it comprises a second transmitter for transmitting the measured atmospheric pressure data.
- the present invention characterized in that it comprises a monitor for monitoring the freshwater lens thickness or freshwater interface depth by the data transmitted from the first transmitter and the data transmitted from the second transmitter.
- the monitor is characterized in that it comprises an alarm unit for providing an alarm when the freshwater lens thickness or the freshwater interface depth is less than a predetermined value.
- Coastal groundwater monitoring system is inserted into an observation well for measuring the groundwater in the coastal area, the saltwater interface position tracking device that moves in accordance with the change of buoyancy on the saltwater interface;
- a distance measuring part inserted into the observation well and fixedly positioned above the freshwater brine interface position tracking device to measure a first distance a with the freshwater brine interface location tracking device, and a hydraulic pressure measuring unit measuring water pressure;
- a second measuring sensor including an atmospheric pressure measuring unit measuring atmospheric pressure; Sleep measurement sensor for measuring the ground water surface; And a database for storing data measured by the first measurement sensor, the second measurement sensor, and the sleep measurement sensor, an operation unit for calculating the data stored in the database, and a value calculated by the operation unit compared with a preset value.
- Comparator And
- a monitor including an alarm unit configured to provide an alarm when a value calculated by comparing in the comparison unit is smaller than a preset value.
- the calculating unit corrects the ground water level measured by the sleep measurement sensor by using the water pressure measured by the water pressure measurement unit of the first measurement sensor and the atmospheric pressure of the second measurement sensor, The second distance to the first measuring sensor is calculated, and the freshwater lens thickness is calculated by the sum of the first distance a and the second distance b.
- Coastal groundwater monitoring method is inserted in the observatory to measure the groundwater in the coastal area of the saltwater interface position tracking device that moves in accordance with the buoyancy change on the saltwater interface; And a first measuring sensor inserted into the observation well, the distance measuring unit being positioned above the salt water interface position tracking device and measuring a first distance from the salt water interface position tracking device.
- the first sensor for measuring the first distance from the first measurement sensor to the freshwater interface position tracking device in the coastal groundwater monitoring system, the measurement sensor includes a first transmitter for transmitting the measured first distance. step; A transmission step of transmitting the measured first distance to the monitor through the first transmitter after the first distance measurement step; And monitoring the freshwater lens thickness or the freshwater interface depth change using the transmitted data.
- Coastal groundwater monitoring method is inserted in the observatory to measure the groundwater in the coastal area of the saltwater interface position tracking device that moves in accordance with the buoyancy change on the saltwater interface;
- a first measurement sensor which is inserted into the observation well and positioned above the salt water interface position tracking device and includes a distance measuring unit measuring a first distance from the salt water interface position tracking device and a hydraulic pressure measuring unit measuring water pressure; ;
- a second measuring sensor including an atmospheric pressure measuring unit measuring atmospheric pressure; Sleep measurement sensor for measuring the ground water surface; And a database storing data measured by the first measurement sensor, the second measurement sensor, and the sleep measurement sensor.
- a calculation unit configured to calculate the data stored in the database, and using the sleep measurement sensor in a coastal groundwater monitoring system including a monitor to provide an alarm when a value calculated by the calculation unit is smaller than a preset value.
- the distance from the ground level to the first measurement sensor of the stored data is characterized in that it comprises a calculation step of calculating the freshwater lens thickness in combination with the first distance by correcting by the atmospheric pressure and the water pressure.
- Coastal groundwater monitoring system made in the above is to observe the saltwater interface in real time, and according to the measurement of the change in freshwater lens thickness or the depth of the saltwater interface depth, if there is a risk that seawater can penetrate the groundwater, groundwater use By issuing a warning limiting the risk, there is an effect of facilitating coastal groundwater management.
- 1 is a schematic state diagram installed in the observation well to measure the groundwater is the brine interface position tracking device used in the present invention.
- FIG. 2 is a schematic state diagram in which the saltwater interface position tracking device used in the present invention is installed and operated in an observation well for measuring groundwater.
- Figure 3 is a perspective view of the brine interface position tracking device used in the present invention.
- Figure 4 is an exploded perspective view of the brine interface position tracking device used in the present invention.
- FIG. 5 is a schematic view of a variable metal member of the saltwater interface position tracking device according to the present invention.
- FIG. 6 is an exploded cross-sectional view of the saltwater interface position tracking device according to the present invention.
- Figure 7 is an enlarged view showing the air outlet of the saltwater interface position tracking device according to the present invention.
- FIG. 9 is a schematic diagram of a coastal groundwater monitoring system in accordance with the present invention.
- FIG. 10 is a block diagram of a first measuring sensor according to the present invention.
- FIG. 11 is a block diagram of a second measuring sensor according to the present invention.
- FIG. 12 is a block diagram of a monitor according to the present invention.
- Figure 13 shows the change of the groundwater surface and freshwater interface according to the use of groundwater.
- FIG. 14 is a flow chart of a coastal groundwater monitoring method according to the present invention.
- 15 is a flow chart of a coast groundwater monitoring method as still another embodiment according to the present invention.
- the present inventors the saltwater interface position tracking device 1 is inserted into the drilled (perforated) observation well (2) to measure the groundwater change in the coastal area as shown in Figs. 1 and 2 up and down according to the variation of the saltwater interface of the groundwater.
- buoyancy guide 10 for adjusting the size of the buoyancy largely by using a fluid, and is installed in the lower portion of the buoyancy guide 10 It consists of a wireless measuring sensor 20 for measuring the ground water level, the temperature, the value of the electrical conductivity of the ground water, and the other hole 30 is installed to surround the wireless measuring sensor 20 in the lower portion of the buoyancy conductor (10).
- the buoyancy inductor 10 has an inner space 11a to contain the fluid, and a buoyancy body 11 in the form of a closed pipe (pipe) in which the opening 11b is formed to insert the fluid thereon, and
- the lower part of the buoyancy body 11 has a sub-racket 12 having a through-hole 12a for installing the wireless measuring sensor 20, and a screw for installing the perforated pipe 30 to the outside of the sub-racket 12 (13) is formed, the sealing cap 14 including a variable metal member (15) attached to the magnet to insert the fluid in the inner space (11a) and seal the opening (11b) in the upper portion of the buoyancy body (11) This is installed.
- variable metal member 15 is expandable and reduced in size by expanding the metal wings 17 in the circumferential direction.
- variable metal member 15 is attached by replacing metal members having different sizes with the sealing cap 14 or by attaching the metal member to the sealing cap 14, and the metal member.
- the size may be varied by adding another metal member of a larger size in the circumferential direction.
- variable metal member 15 is attached to the cap 14 for sealing when the fresh water interface position tracking device 1 is installed and recovered in the groundwater observation well 2, and then the number of the variable metal members 15 is attached and recovered.
- the electromagnet is located exactly on top of the variable metal member 15, the fresh water interface position tracking device 1 is recoverable by magnetic force.
- variable metal member 15 is set to be slightly smaller than the diameter of the groundwater observation well 2 so that the electromagnet can be easily recovered at any position of the groundwater observation well 2.
- variable metal member 15 and the sealing cap 14 may be coupled by screws, and the protruding portion having a thread is formed on the variable metal member 15 itself so that the female thread portion is formed at the upper end of the sealing cap 14. You can also combine.
- the opening 11b and the sealing cap 14 are generally formed with screw grooves corresponding to each other, and a packing 16 made of rubber material for ensuring airtightness is positioned between the opening 11b and the sealing cap 14. Then, the fluid 40 is inserted into the inner space 11a through the opening 11b to adjust the size of the buoyancy and then sealed with a sealing cap 14.
- the wireless measuring sensor 20 is a conventional measurement of the groundwater level, temperature, electrical conductivity values, etc. in the coastal area, the wireless measuring sensor 20 measures the change in the groundwater signal to the recording device installed on the ground by wireless communication Send to confirm the change of position of freshwater interface on the ground.
- the wireless measuring sensor 20 is formed with a connector 21 provided with a through-hole 22 to be installed in the racket 12 formed on the buoyancy guide 10 as shown in FIG.
- the wireless measuring sensor 20 matches the through hole 12a formed in the buckle 12 of the buoyancy guide 10 with the through hole 22 of the connector 21, and then inserts a pin. To be fixedly installed underneath the buoyancy guide (10).
- the other hole 30 is installed on the periphery of the wireless measuring sensor 20 to protect the wireless measuring sensor 20, and the groundwater and the brine flow into the wireless measuring sensor 20 located inside as shown in FIG. 4. Be sure to
- a plurality of inflow holes 32 are formed on the outer circumferential surface of the perforated body 31, and groundwater and brine flow into the perforated body 31 through the inflow hole 32.
- the screw groove 33 is formed on the upper surface of the perforated body 31 between the perforated body 31 and the female screw portion 13 formed in the lower portion of the buoyancy body 11 Screw connection is possible.
- the plurality of inflow holes 32 are formed in the longitudinal direction of the perforated body 31.
- the groundwater brine position tracking device (1) When the groundwater brine position tracking device (1) is inserted into the groundwater observation well (2), the groundwater and the brine are introduced from the inflow hole (32) located below the perforated body (31), and the inflow hole (32) formed in the upper portion Through the air remaining in the perforated body 31 is discharged.
- the microcavity is formed at the uppermost portion of the perforated body 31, that is, the screwed coupling portion between the male screw portion 33 formed on the upper surface of the perforated body 31 and the female screw portion 13 formed on the lower portion of the buoyancy body 11. And air can remain in this area and affect buoyancy.
- an air outlet 34 is formed in the male screw part 33, and the female screw part 13 is provided. Air outlet 34 is also formed in the corresponding position.
- the air outlet 34 formed in the male threaded portion 33 and the air outlet 34 formed in the female threaded portion 13 can communicate with each other when the male threaded portion 33 and the female threaded portion 13 are coupled to each other.
- the micro air remaining at the top of the body 31 is completely discharged through the air outlet 34.
- the other hole 30 may be installed to be detached from the outer circumferential surface of the wireless measurement sensor 20 to protect the wireless measurement sensor 20, but the buoyancy of the wireless measurement sensor 20 directly in the absence of the other hole 30 is buoyant. It can be installed and used in the derivative (10).
- a screw thread is formed on the upper outer circumferential surface of the wireless measuring sensor 20 to be screwed with the connector 21.
- a screw thread is formed on the upper outer circumferential surface of the wireless measuring sensor 20 from which the connector 21 is removed, and a screw thread may be formed on the lower surface of the buoyancy guide 10 and screwed directly.
- the wireless measuring sensor 20 may have a variety of forms, and may also vary in size, the diameter of the upper outer peripheral surface is different depending on the size and buoyancy inducer 10 of a certain size In order to be screwed together, the connecting member 16 is used.
- the first screw thread 24 is formed on the upper outer circumferential surface of the connecting member 16, and the second screw thread 18 is formed on the lower inner circumferential surface thereof so that the second screw thread 18 is a screw thread formed on the radio measuring sensor 20.
- the first screw thread 24 is coupled to the thread formed on the lower inner circumferential surface of the buoyancy body 11 of the buoyancy inductor 10 to couple the buoyancy inductor 10 and the wireless measuring sensor 20.
- the diameter of the second screw thread 18 of the connecting member 16 may be formed in various sizes according to the diameter of the wireless measuring sensor 20, the diameter of the first screw thread 24 is the lower inner peripheral surface of the buoyancy body 11 It is fixed according to the diameter.
- the buoyancy inductor 10 has an inner space 11a to include a fluid, and has a bottom-closed pipe (tube) in which an opening 11b is formed to insert a fluid thereon.
- the buoyancy body 11 of the, the lower inner peripheral surface is formed with a screw thread is coupled to the wireless measuring sensor 20, the sealing member to prevent the fluid contained therein due to the screw thread formed on the lower surface of the blocked pipe (pipe). (19) is formed at the lower end of the inner space (11a) to isolate the screw thread and the inner space (11a) to be watertight.
- FIG. 9 is a schematic diagram of a coastal groundwater monitoring system in accordance with the present invention.
- the coastal groundwater monitoring system includes a freshwater interface position tracking device 1, a first measurement sensor 100, and a first transmitter 120.
- Brine interface location tracking device (1) is inserted into the observation well (2) for measuring the groundwater in the coastal area to measure the change in the position of the salt water interface (5) while moving in accordance with the buoyancy change on the salt water interface (5) .
- the first measurement sensor 100 is installed between the groundwater surface 4 and the freshwater interface 5, that is, installed above the freshwater interface location tracking device 1, but fixed to a predetermined height of the freshwater flux.
- FIG. 10 is a block diagram of a first measuring sensor according to the present invention.
- the first measuring sensor 100 measures the first distance a with the freshwater interface surface position tracking device 1 and the measured first distance a. It includes a first transmitter 120 capable of transmitting.
- the first measuring sensor 100 includes a hydraulic pressure measuring unit 130 to measure the fresh water pressure in real time.
- the distance measuring unit 110 may be applied to any technology that can measure the distance in water, and in one embodiment, including a sound wave generator or laser generator 111 and a sound wave receiver or laser receiver 112, sound wave generator Sound waves generated from the (111) is reflected back to the fresh water interface position tracking device (1) is detected by the sound wave receiver 112 and the distance can be measured through this, or laser generated from the laser generator 111 The laser beam reflected on the water interface position tracking device 1 and returned to the laser receiver 112 can detect the distance.
- a sound wave generator or laser generator 111 and a sound wave receiver or laser receiver 112
- sound wave generator Sound waves generated from the (111) is reflected back to the fresh water interface position tracking device (1) is detected by the sound wave receiver 112 and the distance can be measured through this, or laser generated from the laser generator 111
- the laser beam reflected on the water interface position tracking device 1 and returned to the laser receiver 112 can detect the distance.
- FIG. 11 is a block diagram of a second measuring sensor according to the present invention.
- the present invention may include a second measuring sensor 200 inserted into the groundwater observation well 2 and installed in the atmosphere, and the second measuring sensor 200 may include an atmospheric pressure measuring unit ( 210 and a second transmitter 220 for transmitting the measured atmospheric pressure data.
- the second measuring sensor 200 may include an atmospheric pressure measuring unit ( 210 and a second transmitter 220 for transmitting the measured atmospheric pressure data.
- the atmospheric pressure is measured as a correction value when measuring the change in the thickness of the freshwater lens between the groundwater surface 4 and the saltwater interface 5 because the groundwater surface 4 changes slightly according to the atmospheric pressure. .
- Data of the first distance a measured by the first measurement sensor 100 is transmitted through the first transmitter 120, and atmospheric pressure data measured by the second measurement sensor 200 is transmitted to the second transmitter 220. Transmitted by the monitor 300 to monitor the freshwater lens thickness and / or the freshwater interface depth.
- the freshwater lens thickness is the first distance a between the freshwater interface tracking device 1 and the first measurement sensor 100 floating at the freshwater interface 5 and the first measurement sensor 100 from the groundwater surface 4. It is the sum of the second distance b to.
- the distance from the groundwater surface 4 to the first measuring sensor 100 is installed so that the height of the first measuring sensor 100 is fixed, but the groundwater surface 5 changes according to atmospheric pressure, and the groundwater surface ( The change in 4) can be calculated as a change in water pressure, and the second distance b is corrected by using the change in atmospheric pressure and the water pressure measured by the water pressure measuring unit 130 of the first measuring sensor 100. .
- the freshwater interface depth means the distance from the ground surface of the groundwater observation well (2) to the freshwater interface (5), which is the sum of the first distance (a) and the second distance (b). It is computed as the sum of the 3rd distance c from the ground surface 6 which meets the entrance of to, and the groundwater surface 4.
- the first underground water level 4 measures and records the distance when the underground water level 4 and the surface measurement sensor 400 come in contact with the ground water level sensor 400 while lowering the ground water observation well 2.
- the change in the groundwater level 4 is calculated based on the first groundwater level 4 through the change in the water pressure measured by the pressure measuring unit 130.
- FIG. 12 is a block diagram of a monitor according to the present invention.
- the monitor 300 includes an alarm unit 350 that provides an alarm when the freshwater lens thickness or the freshwater interface depth is smaller than the preset value P set by the user. do.
- the monitor 300 can know the altitude of the ground surface 6 of the groundwater observation well through the altitude from the sea level 3, and the altitude of the fresh water interface 5 is the elevation of the ground surface 6 of the groundwater observation well. Calculated from the first distance (a), the second distance (b), and the third distance (c) from the above, and when the altitude above sea level of the salt water interface 5 rises above the reference set value (P1), groundwater The groundwater level of the observation well (2) is lowered by that much, which means that the brine has risen, thus providing an alarm to manage the groundwater.
- the alarm unit 350 may be recognized by the user in various ways such as a sound or a warning lamp.
- the monitor 300 may provide an alarm to the alarm unit 350 by using the first distance observed from the first measurement sensor 100 through the first transmitter 120 of the first measurement sensor 100.
- the comparison unit 330 and the comparison unit 330 comparing the preset reference value P1 set in advance, the freshwater lens thickness is smaller than the preset value P, or the freshwater interface depth value is the reference value. If greater than the set value (P1) includes an alarm unit for providing an alarm.
- the hydraulic pressure measuring unit 130 of the first measurement sensor 100 is based on the groundwater level 4 measured by the sleep measurement sensor 400.
- the hydraulic pressure measuring unit 130 of the first measurement sensor 100 is based on the groundwater level 4 measured by the sleep measurement sensor 400.
- the second distance b is calculated.
- the freshwater lens thickness is calculated from the sum of the first distance (a), the second distance (b), and the third distance (c), and the freshwater boundary depth value is calculated through the difference of these values from the elevation of the surface of the earth.
- the monitor 300 additionally displays various data stored in the database 310 in real time and the freshwater lens thickness or the freshwater interface depth value calculated by the operation unit 320 on the display unit 340 to monitor the user visually. have.
- the freshwater lens thickness or the freshwater brine depth value is smaller than the preset value (P).
- P the preset value
- the rainwater that penetrates naturally decreases and the freshwater lens thickness becomes thin and the saltwater thickness becomes thick.
- the groundwater surface (4) is conical form around the groundwater well due to the excessive pumping of groundwater in the groundwater well in the coastal area. It means that the saltwater interface rises in a conical shape as it descends, so that the saltwater interface is located above the predetermined depth, and the elevation of the saltwater interface by the amniotic fluid is the groundwater level (2) in the groundwater observation well (2) of FIG. 4) and the change of the freshwater interface 5 can be seen in the drawing.
- FIG. 14 is a flow chart of a coastal groundwater monitoring method according to the present invention.
- the coastal groundwater monitoring method according to the present invention is inserted into an observation well (2) for measuring groundwater in a coastal area, and tracks the position of the saltwater interface where the saltwater interface (5) moves according to the change of buoyancy on the saltwater interface (5).
- Device 1 a distance measuring unit 110 inserted into the observation well 2 and positioned above the freshwater brine interface position tracking device 1 to measure a first distance a with the freshwater brine interface position tracking device 1.
- Coastal groundwater monitoring system comprising a first measuring sensor 100 including a), the first measuring sensor 100 includes a first transmitter 120 for transmitting the measured first distance (a)
- 15 is a flow chart of a coast groundwater monitoring method as still another embodiment according to the present invention.
- a coastal groundwater monitoring method is inserted in the observation well (2) for measuring the groundwater in the coastal area and the fresh salt boundary surface position moving in accordance with the change of buoyancy on the fresh salt interface (5) Tracking device 1;
- a distance measuring unit 110 inserted into the observation well 2 and positioned above the freshwater brine interface location tracking device 1 and measuring a first distance a with the freshwater brine interface location tracking device 1;
- a first measuring sensor 100 comprising a hydraulic pressure measuring unit 130 for measuring the hydraulic pressure;
- Sleep measurement sensor 400 for measuring the ground water surface (4);
- a database 310 storing data measured by the first measurement sensor 100, the second measurement sensor 200, and the sleep measurement sensor 400.
- the sleep measurement sensor in the coastal groundwater monitoring system including a monitor 300 including an alarm unit 350 that provides an alarm when the comparison unit 330 is smaller or larger than the preset value P or the reference set value P1.
- the coastal groundwater monitoring system observes the saltwater interface in real time, and thus measures the change of the freshwater lens thickness or the depth of the saltwater interface to warn the use of groundwater when there is a risk of seawater infiltration into the groundwater.
- the announcement there is an effect of facilitating the management of the coastal groundwater, and thus there is industrial applicability.
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Abstract
Description
Claims (12)
- 해안지역의 지하수를 측정하는 관측정에 삽입되어 담염수 경계면상에서 부력의 변화에 따라 이동하는 담염수 경계면 위치 추적장치; 및상기 관측정에 삽입되고, 상기 담염수 경계면 위치 추적장치보다 상부에 위치하여 상기 담염수 경계면 위치 추적장치와의 제1거리를 측정하는 거리측정부를 포함하는 제1측정센서를 포함하고,상기 제1측정센서는 측정한 상기 제1거리를 송신하는 제1송신부를 포함하는 것을 특징으로 하는 해안 지하수 모니터링 시스템.
- 제1항에 있어서,상기 제1측정센서는 수압도 측정할 수 있는 수압측정부를 포함하는 것을 특징으로 하는 해안 지하수 모니터링 시스템.
- 제2항에 있어서,상기 관측정의 내부에 삽입되며, 대기중에 설치된 제2측정센서를 포함하는 것을 특징으로 하는 해안 지하수 모니터링 시스템.
- 제1항에 있어서,상기 거리측정부는 음파 발생기와 음파수신기 또는 레이저 발생기와 레이저수신기를 포함하는 것을 특징으로 하는 해안 지하수 모니터링 시스템.
- 제3항에 있어서,상기 제2측정센서는 대기압을 측정하는 대기압 측정부를 포함하는 것을 특징으로 하는 해안 지하수 모니터링 시스템.
- 제5항에 있어서,상기 제2측정센서는 측정한 대기압 데이터를 전송하는 제2송신부를 포함하는 것을 특징으로 하는 해안 지하수 모니터링 시스템.
- 제6항에 있어서,상기 제1송신부에서 전송된 데이터와 상기 제2송신부에서 전송된 데이터에 의해 담수렌즈 두께 또는 담염수 경계면 심도를 감시하는 모니터를 포함하는 것을 특징으로 하는 해안 지하수 모니터링 시스템.
- 제7항에 있어서,상기 모니터는 상기 담수렌즈 두께가 기설정값보다 작거나, 상기 담염수 경계면 심도가 기준설정값보다 크면 알람을 제공하는 알람부를 포함하는 것을 특징으로 하는 해안 지하수 모니터링 시스템.
- 해안지역의 지하수를 측정하는 관측정에 삽입되어 담염수 경계면상에서 부력의 변화에 따라 이동하는 담염수 경계면 위치 추적장치;상기 관측정에 삽입되고, 상기 담염수 경계면 위치 추적장치보다 상부에 위치하여 상기 담염수 경계면 위치 추적장치와의 제1거리를 측정하는 거리측정부 및 수압을 측정하는 수압측정부를 포함하는 제1측정센서;대기압을 측정하는 대기압 측정부를 포함하는 제2측정센서;지하수면을 측정하는 수면측정센서; 및상기 제1측정센서와 상기 제2측정센서, 상기 수면측정센서에서 측정된 데이터를 저장하는 데이터베이스, 상기 데이터베이스에 저장된 상기 데이터를 연산하는 연산부, 상기 연산부에서 연산된 값이 기설정값과 비교하는 비교부; 상기 비교부에서 비교하여 연산된 값이 기설정값보다 작으면 알람을 제공하는 알람부를 포함하는 모니터를 포함하는 것을 특징으로 하는 해안 지하수 모니터링 시스템.
- 제9항에 있어서,상기 연산부는 수면측정센서에서 측정한 지하수면을 제1측정센서의 상기 수압측정부에서 측정한 수압과 상기 제2측정센서의 대기압을 이용하여 보정함으로써, 상기 지하수면으로부터 상기 제1측정센서까지의 제2거리를 연산하고,상기 제1거리와 상기 제2거리의 합으로 담수 렌즈 두께를 연산하는 것을 특징으로 하는 해안 지하수 모니터링 시스템.
- 해안지역의 지하수를 측정하는 관측정에 삽입되어 담염수 경계면상에서 부력의 변화에 따라 이동하는 담염수 경계면 위치 추적장치; 및 상기 관측정에 삽입되고, 상기 담염수 경계면 위치 추적장치보다 상부에 위치하여 상기 담염수 경계면 위치 추적장치와의 제1거리를 측정하는 거리측정부를 포함하는 제1측정센서를 포함하고, 상기 제1측정센서는 측정한 상기 제1거리를 송신하는 제1송신부를 포함하는 것을 해안 지하수 모니터링 시스템에서 상기 제1측정센서로부터 상기 담염수 경계면 위치 추적장치까지의 상기 제1거리를 측정하는 제1거리 측정단계;상기 제1거리 측정단계 후, 측정한 상기 제1거리를 상기 제1송신부를 통해 모니터에 전송하는 전송단계;전송된 데이터를 이용하여 담수 렌즈 두께 또는 담염수 경계면 심도 변화를 모니터링하는 모니터링 단계를 포함하는 것을 특징으로 하는 해안 지하수 모니터링 방법.
- 해안지역의 지하수를 측정하는 관측정에 삽입되어 담염수 경계면상에서 부력의 변화에 따라 이동하는 담염수 경계면 위치 추적장치; 상기 관측정에 삽입되고, 상기 담염수 경계면 위치 추적장치보다 상부에 위치하여 상기 담염수 경계면 위치 추적장치와의 제1거리를 측정하는 거리측정부 및 수압을 측정하는 수압측정부를 포함하는 제1측정센서; 대기압을 측정하는 대기압 측정부를 포함하는 제2측정센서; 지하수면을 측정하는 수면측정센서; 및 상기 제1측정센서와 상기 제2측정센서, 상기 수면측정센서에서 측정된 데이터를 저장하는 데이터베이스, 상기 데이터베이스에 저장된 상기 데이터를 연산하는 연산부, 상기 연산부에서 연산된 값이 기설정값보다 작은지 비교하는 비교부, 상기 비교부에서 연산된 값이 기설정값보다 작으면 알람을 제공하는 알람부를 포함한 모니터를 포함하는 해안 지하수 모니터링 시스템에서 상기 수면측정센서를 이용하여 지하수면을 측정하는 지하수면 측정단계;상기 제1측정센서로부터 상기 담염수 경계면 위치 추적장치까지의 상기 제1거리를 측정하고, 수압을 측정하는 제1거리 및 수압측정단계;상기 제2측정센서의 대기압 측정부에서 대기압을 측정하는 대기압 측정단계;상기 데이터 베이스에 측정된 상기 데이터를 저장하는 저장단계;저장된 상기 데이터 중 상기 지하수면으로부터의 상기 제1측정센서까지의 거리는 상기 대기압 및 상기 수압에 의해 보정하여 상기 제1거리와 합하여 담수렌즈 두께를 연산하는 연산단계를 포함하는 것을 특징으로 하는 해안 지하수 모니터링 방법.
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CN117870826A (zh) * | 2024-03-13 | 2024-04-12 | 山东省地矿工程勘察院(山东省地质矿产勘查开发局八〇一水文地质工程地质大队) | 一种岩溶地下水水位波动异常预警设备 |
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KR101649726B1 (ko) * | 2014-10-22 | 2016-08-22 | 한국해양과학기술원 | 부유식 수환경 측정장치 및 이를 이용한 실시간 수환경 모니터링 방법 |
KR102011500B1 (ko) | 2016-11-15 | 2019-08-19 | 동아대학교 산학협력단 | 해수침투 저감을 위한 무동력 해수양수 시스템, 및 이 시스템에서의 관정의 최적화 설계를 위한 장치 및 방법 |
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