KR101653609B1 - Survey apparatus of deep well aquifer underground water - Google Patents

Survey apparatus of deep well aquifer underground water Download PDF

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Publication number
KR101653609B1
KR101653609B1 KR1020160099415A KR20160099415A KR101653609B1 KR 101653609 B1 KR101653609 B1 KR 101653609B1 KR 1020160099415 A KR1020160099415 A KR 1020160099415A KR 20160099415 A KR20160099415 A KR 20160099415A KR 101653609 B1 KR101653609 B1 KR 101653609B1
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KR
South Korea
Prior art keywords
tube
groundwater
circumferential surface
water
inner circumferential
Prior art date
Application number
KR1020160099415A
Other languages
Korean (ko)
Inventor
정성래
Original Assignee
주식회사 성지엔지니어링
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Priority to KR1020160099415A priority Critical patent/KR101653609B1/en
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D1/00—Investigation of foundation soil in situ
    • E02D1/02—Investigation of foundation soil in situ before construction work
    • E02D1/06—Sampling of ground water
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/12—Packers; Plugs
    • E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
    • E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
    • E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
    • E21B49/084—Obtaining fluid samples or testing fluids, in boreholes or wells with means for conveying samples through pipe to surface

Abstract

The present invention relates to a groundwater aquifer for groundwater aquifers, and more particularly, to prevent inflow of upper ground contaminated groundwater of groundwater aquifers or to conduct a pumping test for each groundwater depth section, The present invention relates to a groundwater aquifer for aquatic aquifers to prevent damage to an expansion tube due to contact with an inner circumferential surface formed on the inner circumferential surface and to confine an inner circumferential surface forming an underground water surface and an expansion tube.

Description

TECHNICAL FIELD [0001] The present invention relates to a groundwater aquifer,

The present invention relates to a groundwater aquifer groundwater irrigation apparatus in the field of groundwater irradiation technology. More particularly, the present invention relates to a groundwater aquifer groundwater irrigation apparatus, The present invention relates to a groundwater aquifer for aquatic aquifers to prevent breakage of an expansion tube due to contact with an inner circumferential surface forming an underground water surface, and airtightness between an inner circumferential surface forming an underground water surface and an expansion tube.

Groundwater (groundwater) refers to the water that flows through the gaps between rocks or underground strata. As the industrialization progresses, environmental pollution deepens and soils become polluted. The contamination rate of groundwater is also increasing day by day.

The strata usually consist of a layer of weathered rock with a high permeability to soil and groundwater composed of ordinary soil and sand, and a soft rock layer, which can be called impervious layer, followed by a rock and a rock layer.

The rock aquifer underground water formed in the layer below the soft rock layer is not affected by the contaminated groundwater from the soil layer or the weathered rock layer above the stratum, and maintains a clear and clean water quality.

However, since the soil layer and the weathered rock layer are easily contaminated by various contaminants introduced from the surface of the ground, the groundwater flowing through the space is also polluted together.

During the groundwater development process, the soil layer and the weathered rock layer are pierced, and the pierced section is then passed through the soft rock layer, the normal rock layer, and the rock layer.

As a result, groundwater contaminated by pollution or contamination is mixed into the groundwater of natural rocky aquifer which is naturally contaminated, and it becomes a main factor of contamination of rock aquifer groundwater.

A Korean Patent Registration No. 10-1242719 (Mar. 03, 2013) discloses an apparatus for investigating an aquifer underground aquifer and an investigation method using the same.

However, in such conventional groundwater aquifers aquifers, the inflation tube may be damaged due to contact with the inner circumferential surface of the inflow tube due to the inflation of the inflation tube, as well as the inner circumferential surface of the groundwater tube and the inflation tube There is a problem that it is not confidential.

Korea Patent Registration No. 10-1242719 (Mar. 23, 2013) 'Apparatus for Investigation of Groundwater Aquifers and Investigation Method Using the Aqueous Groundwater'

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to prevent inflow of upper ground contaminated groundwater in the groundwater bed, or to conduct a pumping test for each groundwater depth section, The present invention provides a groundwater aquifer for groundwater aquifers to prevent breakage of an expansion tube due to contact with an inner circumferential surface forming an underground water surface and airtightness between an inner circumferential surface forming an underground water surface and an expansion tube.

The problems to be solved by the present invention are not limited to those mentioned above, and other solutions not mentioned can be clearly understood by those skilled in the art from the following description.

In order to achieve the above-mentioned object, the present invention provides a method for preventing the inflow of upper ground contaminated groundwater of an underground water channel or conducting a pumping test for ground water depth zone, connecting a water pipe to upper and lower pipes through a water pipe, A packer device installed inside the underground water well excavated in order to collect rock ground aquifer underground water and having an expansion tube; An underwater motor pump connected to a water pipe connected to a lower portion of the water pipe; An integrating flow meter mounted on a discharge pipe installed in a water pipe connected to the upper portion of the water pipe; A flow control valve installed in the discharge pipe; A pressurized fluid injection device for injecting a pressurized fluid for expanding the expansion tube; An upper end connected to the pressurized fluid injecting device and a lower end connected to the inflating tube such that pressurized fluid is injected into the inflating tube as the pressurized fluid injecting device is driven; A power cable provided inside the water pipe; And a level measuring tube; An expansion unit provided at both end portions of the water supply pipe and having a power cable and a lead-out portion of the level measuring tube; An expanding tube located at the top of the water pipe and connected to the level measuring tube; A lower end connected to the expanding tube, and an upper end drawn to the ground; And a water level measuring sensor accommodated in the water level measuring tube. The groundwater aquifer is a groundwater aquifer for aquatic aquifers, which prevents breakage of the expansion tube due to contact with an inner circumferential surface forming an underground water surface due to expansion of the expansion tube, Wherein the airtight portion includes an airtight tube disposed between the inner circumferential surface of the groundwater core and the inflation tube, and an airtight portion that airtightens between the inner circumferential surface of the groundwater and the inflation tube. The pressurized fluid supplied to the inflating tube through the inflating tube is branched according to the driving of the pressurized fluid injecting apparatus, and the airtight tube is connected to the inflating tube, To be injected together with the branch tube; And an outer flexible tube connected to an outer circumferential surface of the airtight tube to form an inner circumferential surface defining the groundwater flow and a space between the branch tubes, wherein the outer flexible tube has an outer circumferential surface to stably contact the inner circumferential surface of the irrigation water And a plurality of grooves that are recessed inward are formed.

According to the present invention, first, there is an effect of securing a leakage-free shielding function even under high water pressure inside the groundwater well.

Secondly, since the water level can be stabilized at a certain level, it is possible to check the leakage amount together with the accurate water withdrawal amount.

Third, it is possible to prevent breakage of the expansion tube due to contact with the inner circumferential surface of the groundwater due to the expansion of the expansion tube, and to improve airtightness between the inner circumferential surface forming the groundwater and the expansion tube.

The effects of the present invention are not limited to those mentioned above, and other solutions not mentioned may be clearly understood by those skilled in the art from the following description.

1 is a cross-sectional view of an underground water heart, showing a state in which a groundwater aquifer for aquatic aquifers according to the present invention is installed.
2 is a front view showing a packer device in a groundwater aquifer for aquatic aquifers according to the present invention.
FIG. 3 is a cross-sectional view illustrating an expanded portion of the aqueduct aquifer groundwater irrigation apparatus according to the present invention.
FIG. 4 is a cross-sectional view of a water pipe in a groundwater aquifer according to the present invention.
5 is a cross-sectional view showing a packer device in a groundwater aquifer for aquatic aquifers according to the present invention.
And
FIG. 6 is a front view showing a state in which a hermetic part is provided in a cardiac aquarium groundwater irradiating apparatus according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. And should not be construed as limited to the embodiments described herein.

Since the embodiments according to the concept of the present invention can make various changes and have various forms, specific embodiments are illustrated in the drawings and described in detail herein.

It should be understood that the embodiments according to the concept of the present invention are not limited to the particular mode of disclosure but include all modifications, equivalents and alternatives falling within the spirit and scope of the present invention.

Since the present invention uses the previously-described prior art 1242719 as it is, all the features of the device configuration described below can be understood as the matters described in the registered patent No. 1242719. [

However, in the present invention, among the configurations disclosed in the above-mentioned Japanese Patent No. 1242719, a groundwater aquifer aquifer is replaced with a groundwater aquifers groundwater irradiator, and the groundwater aquifers are disposed in the vicinity of the inner surface of the expansion tube And further includes a structure for sealing the inner circumferential surface of the groundwater tube and the expansion tube, and a description of the operation thereof, and this part is the most important constitutional feature.

Therefore, the device structure, characteristics, and operation relationship described below will be incorporated by reference in the above-mentioned Japanese Patent No. 1242719, and the structure related to the main features of the present invention will be described in detail at the rear end.

1 to 5, the groundwater aquifer for groundwater aquifers according to the present invention can prevent the inflow of the groundwater contaminated groundwater into the upper layer or perform the pumping test for each groundwater depth section, A packer device 2 connected to the upper and lower portions of the groundwater pipe 1 and connected to the lower portion of the water pipe 30, A submerged motor pump 5 connected to the pipe 6, an integrating flow meter 10 mounted on a discharge pipe 9 installed in a water pipe 6 connected to the upper part of the water pipe 30, 9, a pressurized fluid injection device 60 for injecting a pressurized fluid for expanding the inflation tube 20 of the water supply pipe 30, The power cable 24 And a water level measuring tube 35. [

The water supply pipe 30 is provided with an expansion part 22 at both ends and the extension part 52 of the expansion part 22 is formed with a draw part of the power cable 24 and the water level measurement tube 35 .

The water level measuring tube 35 is connected to an expansion tube 26. The water level measuring tube 27 is connected to the expansion tube 26 and the water level measuring sensor 40 is installed inside.

The expansion tube 20 and the water supply pipe 30 are connected to each other by a high pressure press in a state where the end portion of the expansion tube 20 is inserted between the water supply pipe 30 and the fixing band 21, .

The inflation tube 20 is preferably fabricated by impregnating nylon yarn or an iron core so as to withstand the high water pressure of the underground water heart 1.

This configuration can be understood in a similar manner to that of a general type of geotechnical grouting packer.

One end portion of the tube portion 22 coupled with the water pipe 30 has a narrow diameter like a narrow part of a funnel shape and has an outer diameter equal to that of the water pipe 30, And has the enlarged surface portion 52 in which the end portion has a large diameter and a large surface area.

The packer device 2 is connected at its lower end to the underwater motor pump 5 by a positive water pipe 6 and at the lower end thereof with the power cable 24 for operating the underwater motor pump 5, And the level control line 25 for controlling the power generation of the underwater motor pump 5 are connected together.

When the groundwater level of the packer device 2 is lowered by the operation of the underwater motor pump 5 or when the groundwater level is increased due to the inflow of groundwater when the underwater motor pump 5 is stopped, An air breathing pipe may be provided for allowing the outside air to be sucked or discharged.

For this purpose, the water level measuring tube 35 functions as an air breathing tube and has a function for water level measurement.

The water level measuring tube 35 may have a circular cross section or may have a thin rectangular shape so as to be installed along the inner circumferential surface of the water pipe 30.

The level measuring tube 35 is installed to penetrate through the expanding portion 22 provided at the upper and lower ends of the packer device 2 and has a water level The measurement tube socket 31 is attached to the water level measurement tube socket 31 and the water level measurement tube 27 is connected after the expansion tube 26 is connected to the water level measurement tube socket 31.

The level measuring sensor 40 is accommodated in the level measuring pipe 27 while being connected to the switch measuring cable 41.

The water level sensor 40 may be a pressure sensor or a water level sensor, and measures groundwater level.

The enlarged pipe portion 22 may be provided with a water pipe socket 51 or a connecting flange 50 for connecting the water pipe 6 to the enlarged surface portion 52.

The water pipe socket 51 or the connecting flange 50 may be disposed at a central position or an eccentric position of the extended face portion 52 and may be installed together or separately as shown in FIG. .

The enlarged surface portion 52 may have a flat surface and may have a hemispherical shape so that the shape of the enlarged surface portion 52 may be modified so as not to be caught in the surroundings during the lifting operation.

An injection tube 28 for injecting a pressurized fluid for inflating the inflation tube 20 is positioned between the outer circumferential surface of the water pipe 30 and the inflation tube 20 through the inside of the fixing band 21 And is drawn out to the ground through the infusion tube socket 53 provided in the enlarged surface portion 52 through the expanded portion 22 as shown in FIG.

The pressurized fluid injector 60 for inflating the inflation tube 20 can inject high pressure gas through a pressure regulator (not shown), or inject clean water using a water pressure pump (not shown).

The packer device 2 is installed inside the emptied groundwater freshwater 1 and the inflated tube 20 is inflated by using the pressurized fluid infusion device 60. [ (3) and the rock groundwater (4) are shielded by shielding the inside section of the groundwater channel (1) by expanding the groundwater channel.

Then, the underwater motor pump 5 is operated to perform a pumping test, and the amount of pumped water is adjusted through the operation of the flow rate adjusting valve 11.

The water level measuring sensor 40 is inserted into the water level measuring pipe 27 to check the groundwater level of the lower portion of the packer device 2. [

In order to maintain the stable water level, the amount of water is adjusted through the operation of the flow rate adjusting valve 11, and the reagent or dye is injected into the water level measuring pipe 27 to check whether the packer device is leaked or not.

A method of checking whether or not a leak has occurred can be confirmed by checking the color of the dye put into the naked eye by installing the camera 23 at the lower end of the packer device 2 together with the method of water quality inspection.

Preferably, a camera cable (not shown) connected to the camera 23 is inserted into the water pipe 30.

In the present invention, as shown in FIG. 6, the expansion tube 20 is prevented from being damaged by contact with the inner circumferential surface forming the groundwater core 1 according to the expansion of the expansion tube 20, The airtightness of the inner circumferential surface of the groundwater centric 1 and the airtightness of the expansion tube 20 is further improved.

The airtight portion 80 includes an airtight tube 81 disposed between the inner circumferential surface of the groundwater centric 1 and the inflation tube 20, one end portion of the airtight tube 80 is connected to the injection tube 28, Includes a branch tube (82) connected to the airtight tube (81).

The airtight tube (81) has a circular ring shape having upper and lower openings, and may be formed in the same shape as the material of the expansion tube (20).

The branch tube 82 allows the pressurized fluid introduced into the expansion tube 20 to be injected into the airtight tube 81 while being branched according to the driving of the pressurized fluid injector 60.

Accordingly, the airtight tube 81 is expanded together with the expansion tube 20 according to the driving of the pressurized fluid injector 60, so that the airtight tube 81 can be confined between the expansion tube 20 and the inner circumferential surface, have.

The airtight tube 81 is pressed against the inner circumferential surface forming the underground water heart 1 in accordance with the pressure of the expansion tube 20 and is compressed between the inner circumferential surface of the inflatable tube 20 and the inner circumferential surface And breakage such as tearing of the expansion tube 20 due to contact with the inner circumferential surface of the groundwater core 1 can be prevented.

The airtight portion 80 may further include an on-off valve 83 provided on the branch tube 82.

The opening and closing valve 83 allows the airtight tube 81 to expand together with the expansion tube 20 or only the expansion tube 20 to expand according to the inner diameter of the groundwater freshness 1. [

The opening / closing valve 83 prevents the pressurized fluid supplied to the injection tube 28 from being injected into the airtight tube 81 due to breakage of the airtight tube 81 or the like.

That is, when the diameter of the groundwater centric 1 is small, the opening / closing valve 83 is blocked so that only the expansion tube 20 can be expanded. At this time, the airtight tube 81 can be airtightly sealed between the expansion tube 20 and the inner circumferential surface forming the groundwater centric depression 1 by the compression due to the pressing of the expansion tube 20, It is of course possible to prevent the tube 20 from coming into contact with the inner circumferential surface of the groundwater core 1.

The opening / closing valve 83 opens the opening / closing valve 83 so that the airtight tube 81 can be expanded together with the expansion tube 20 when the diameter of the groundwater 1 is large. At this time, it is needless to say that excessive expansion of the expansion tube 20 can be prevented by expansion of the airtight tube 81.

The airtight portion 80 may further include an internal flexible tube 84 connected between the expansion tube 20 and the airtight tube 81.

The inner flexible tube 84 has a tubular shape with open top and bottom, and may be made of rubber, silicon, or the like.

The inner flexible tube 84 is connected between the expansion tube 20 and the airtight tube 81 by an adhesive or the like and is connected to the expansion tube 20 which is expanded together with the driving of the pressurized fluid injection device 60. [ And the airtight tube (81) are pressed against each other in a direction opposite to each other, so that they can be uniformly contacted with each other and expanded.

Further, the inner flexible tube 84 is prevented from being damaged due to friction due to contact between the expansion tube 20 and the airtight tube 81.

The airtight portion 80 may further include an external flexible tube 85 connected to an outer circumferential surface of the airtight tube 81.

The outer flexible pipe 85 is formed in a tubular shape having upper and lower openings, and may be made of rubber, silicone, or the like.

The outer flexible pipe 85 is connected to the outside of the airtight tube 81 by an adhesive or the like and is connected to the inner circumferential surface of the airtight tube 81, To be confidential.

The outer flexible pipe 85 can prevent breakage or the like which may be generated while the hermetic tube 81 is in contact with the inner circumferential surface of the groundwater core 1 according to the expansion of the hermetic tube 81 .

The outer flexible pipe 85 may be formed with a plurality of grooves 85a recessed inwardly from the outer circumferential surface so as to stably contact the irregular inner circumferential surface of the groundwater 1.

Therefore, the present invention is capable of preventing airtightness between the inner circumferential surface of the underground water heart 1 and the airtight tube 81, as well as damage due to contact with the inner circumferential surface of the underground water heart 1 .

Reference numeral 7 is a contamination-preventing grouting wall, 8 is a grouting casing, 32 is a power cable socket, and 33 is a water level control line socket.

1: Underground water 2: Packer device
3: contaminated groundwater 4: rock groundwater
5: Submersible motor pump 6: Amniotic pump
9: Discharge tube 11: Flow adjusting valve
20: Expansion tube 22: Expansion tube
23: camera 24: power cable
25: Water level control line 26: Expansion tube
27: level gauge 28: injection tube
30: water pipe 31: water level measuring pipe socket
35: water level measuring tube 40: water level measuring sensor
50: connecting flange 52: extended face
53: injection tube socket 70: water pipe socket
80: airtight portion 81: airtight tube
82: branch tube 83: opening / closing valve
84: inner flexible pipe 85: outer flexible pipe
85a:

Claims (1)

It can prevent the inflow of upper ground contaminated groundwater of underground water depth,
A packer device installed inside the underground water well excavated to receive the rock aquifer underground water and connected to the upper and lower pipes through the water pipe, respectively, and having an expansion tube;
An underwater motor pump connected to a water pipe connected to a lower portion of the water pipe;
An integrating flow meter mounted on a discharge pipe installed in a water pipe connected to the upper portion of the water pipe;
A flow control valve installed in the discharge pipe;
A pressurized fluid injection device for injecting a pressurized fluid for expanding the expansion tube;
An upper end connected to the pressurized fluid injecting device and a lower end connected to the inflating tube such that pressurized fluid is injected into the inflating tube as the pressurized fluid injecting device is driven;
A power cable provided inside the water pipe; And a level measuring tube;
An expansion unit provided at both end portions of the water supply pipe and having a power cable and a lead-out portion of the level measuring tube;
An expanding tube located at the top of the water pipe and connected to the level measuring tube;
A lower end connected to the expanding tube, and an upper end drawn to the ground; And
And a water level sensor accommodated in the water level measuring pipe,
Further comprising an airtight portion for preventing airtightness between the inner circumferential surface of the inflating tube and the inflating tube while preventing damage to the inflating tube due to contact with an inner circumferential surface of the inflating tube due to expansion of the inflating tube,
The gas-
An airtight tube disposed between the inner circumferential surface of the groundwater and the inflation tube;
The pressurized fluid supplied to the inflating tube through the inflating tube is branched according to the driving of the pressurized fluid injecting apparatus, and the airtight tube is connected to the inflating tube, To be injected together with the branch tube; And
And an outer flexible tube connected to an outer circumferential surface of the airtight tube to seal the space between the inner circumferential surface and the branch tube,
Wherein the outer flexible tube includes:
Wherein a plurality of grooves that are recessed inward from the outer circumferential surface are formed so as to stably contact the irregular inner circumferential surface of the underground water heart.
KR1020160099415A 2016-08-04 2016-08-04 Survey apparatus of deep well aquifer underground water KR101653609B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020160099415A KR101653609B1 (en) 2016-08-04 2016-08-04 Survey apparatus of deep well aquifer underground water

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Application Number Priority Date Filing Date Title
KR1020160099415A KR101653609B1 (en) 2016-08-04 2016-08-04 Survey apparatus of deep well aquifer underground water

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113701848A (en) * 2021-07-14 2021-11-26 核工业二四三大队 Automatic measuring instrument for water level in well
KR20210158625A (en) * 2020-06-24 2021-12-31 한국원자력연구원 Non-shrinkable packer device
KR102368137B1 (en) * 2021-06-10 2022-02-28 권병철 Pneumatic packer for grouting construction
CN115615756A (en) * 2022-10-11 2023-01-17 河北环境工程学院 Method and device for monitoring and evaluating pollution easiness of underground water

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120125619A1 (en) * 2009-05-27 2012-05-24 Peter Wood Active external casing packer (ecp) for frac operations in oil and gas wells
US20120125641A1 (en) * 2010-11-22 2012-05-24 Boise State University Modular hydraulic packer-and-port system
KR101242719B1 (en) 2010-10-21 2013-03-12 주식회사 지앤지테크놀러지 Apparatus and method for check ground well

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120125619A1 (en) * 2009-05-27 2012-05-24 Peter Wood Active external casing packer (ecp) for frac operations in oil and gas wells
KR101242719B1 (en) 2010-10-21 2013-03-12 주식회사 지앤지테크놀러지 Apparatus and method for check ground well
US20120125641A1 (en) * 2010-11-22 2012-05-24 Boise State University Modular hydraulic packer-and-port system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210158625A (en) * 2020-06-24 2021-12-31 한국원자력연구원 Non-shrinkable packer device
KR102391461B1 (en) 2020-06-24 2022-04-27 한국원자력연구원 Non-shrinkable packer device
KR102368137B1 (en) * 2021-06-10 2022-02-28 권병철 Pneumatic packer for grouting construction
CN113701848A (en) * 2021-07-14 2021-11-26 核工业二四三大队 Automatic measuring instrument for water level in well
CN113701848B (en) * 2021-07-14 2023-12-26 核工业二四三大队 Automatic measuring instrument for water level in well
CN115615756A (en) * 2022-10-11 2023-01-17 河北环境工程学院 Method and device for monitoring and evaluating pollution easiness of underground water
CN115615756B (en) * 2022-10-11 2024-01-26 河北环境工程学院 Underground water pollution-prone monitoring and evaluating method and device

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