KR101770389B1 - filter cleansing method of apparatus for draining ground water - Google Patents

filter cleansing method of apparatus for draining ground water Download PDF

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Publication number
KR101770389B1
KR101770389B1 KR1020150059667A KR20150059667A KR101770389B1 KR 101770389 B1 KR101770389 B1 KR 101770389B1 KR 1020150059667 A KR1020150059667 A KR 1020150059667A KR 20150059667 A KR20150059667 A KR 20150059667A KR 101770389 B1 KR101770389 B1 KR 101770389B1
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South Korea
Prior art keywords
washing
filter
water
pipe
groundwater
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KR1020150059667A
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Korean (ko)
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KR20160128003A (en
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홍종인
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홍종인
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
    • E02D31/025—Draining membranes, sheets or fabric specially adapted therefor, e.g. with dimples

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Hydrology & Water Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)

Abstract

The method of cleaning a clogged filter of a groundwater drainage apparatus of the present invention includes a hold-lane board surrounded by a filter or a filter wrapped by a filter for collecting groundwater, A filter clogging detecting step of detecting whether the filter is clogged from a test tube having a height equal to or higher than the height of the design stable water level and passing through the base concrete layer by communicating with the space portion partitioned by the pipe or the drain- A preliminary washing step for lowering the level of the ground water by separating the sealing cap from each washing pipe for supplying the high-pressure washing water for washing the filter, washing the filter around the washing pipe by supplying the washing water of the set pressure to the washing pipes And a space portion partitioned by a pipe or a drain hole board of the drainage portion, Through the concrete floor and a filter washing step for supplying wash water for cleaning of the filter is set on the cleaning tube.

Figure R1020150059667

Description

Background of the Invention Field of the Invention [0001] The present invention relates to a filter cleaning method for a groundwater drainage apparatus,

More particularly, the present invention relates to a filter for enclosing a hold-lane board or a pipe for drainage of groundwater, that is, a clogging filter of a groundwater drainage device for cleaning a nonwoven fabric, ≪ / RTI >

Generally, when the final floor of an architectural structure is installed below the groundwater, positive pressure (buoyancy) is generated by the space excluded by the structure, that is, the floor of the building structure and the groundwater head difference of the underground outer wall of the building structure. This positive pressure acts as a counter-reaction against the self-weight of the building, which may damage the building structure, so it is necessary to adjust the level of groundwater.

In the case of large-scale buildings such as apartments, the underground parking lot has become legally required recently. Due to the increase in the number of residents and the desire to secure the green space of tenants, the underground parking lot of the apartment is located in a lower area, The influence of positive pressure on buildings is getting bigger.

Therefore, an anchor method and a dewatering method are used to prevent the positive pressure due to the water level change of the groundwater from affecting the building structure.

As an example of a drainage method, Korean Patent Registration No. 317530 discloses a positive pressure relief system for an underground structure, and a registered utility model No. 0195274 discloses a vertical drain pipe for preventing buoyancy of underground structures. Patent Registration No. 0443640 discloses an underground building A system for installing buoyancy prevention vertical drain pipes is posted.

In the posted drain pipe installation system, an inlet pipe of a vertical drain pipe is vertically installed inside a drain hole, and a filter pipe vertically installed in the ground is connected to the lower end of the inlet pipe, and a pipe and an upper pipe are connected to the upper end of the inlet pipe And the height of the water pipe provided at the upper end of the pipe is adjusted to the height of the ground water in the normal state.

In the drainage system for preventing the buoyancy of buildings in the above-described examples, the nonwoven fabric is clogged by the filter surrounding the drain pipe, that is, the fine particles piled up in the ground water drained from the drain. If the drainage of the groundwater is not smoothly performed, the head of the groundwater rises and the building structure is damaged by the positive pressure.

In order to detect the clogging of the corrosion water of the ground water, the present inventor filed and filed a registration (Korean Patent Registration No. 1129402) for a filter clogging detection unit with a groundwater drainage apparatus. Further, the present inventor filed and registered a groundwater drainage device having a filter cleaning device (Korea Patent No. 1039417).

 The inventors of the present invention have found that, in the process of continuously studying the drainage system for eliminating the positive pressure of the building structure as described above, the nonwoven fabric, which is a filter for covering the pipe or the hold-lane board, Considering the fact that it does not exist, it has been researched and developed an efficient washing method and filed a follow-up application.

Korea Patent No. 1129402 Korean Patent No. 1039417

The present invention has been made in view of the above problems, and it is an object of the present invention to provide a nonwoven fabric which can detect and clean the clogging of a nonwoven fabric, which is a filter that surrounds a pipe or a drain pan to drain groundwater generating pressure of a building, And a cleaning method of the clogging filter of the apparatus.

Another object of the present invention is to provide a cleaning method of a clogging filter of a groundwater drainage apparatus capable of preventing the occurrence of defects of a structure during injection of high-pressure washing water by making the injection pressure for washing the filter to be equal to or less than the converted maximum- have.

According to an aspect of the present invention, there is provided a cleaning method of a clogging filter of a groundwater drainage apparatus,

And a hold-lane board wrapped by a filter or a filter enclosed by a filter for collecting groundwater. A filter for detecting whether the filter is clogged from a detection tube having a height equal to or higher than the height of the design stable water level of the groundwater. Step,

The washing pipes communicate with the space partitioned by the drainage part or the drain pan of the drainage part to supply high-pressure washing water through the base concrete layer for washing the filter. Into a group of wash water discharge tubes for the washing tub,

A sealing cap separation step of injecting washing water into the washing water supply tube group and separating the sealing cap from the washing tubes so that the washing water can be discharged from the washing water discharge tube group,

The washing water is supplied to the washing pipes selected as the washing water supply pipe group for supplying the washing water and the washing water passing through the filter is discharged to the washing pipes of the washing water discharge pipe group in which the sealing cap is separated, And a washing step.

In the present invention, the filter clogging detection step may further include a comparison step of determining whether the filter is clogged by comparing the observation water level and the water level that are detected through the detection tube with each other.

And a set pressure conversion step of converting the allowable water level of the groundwater into a pressure and setting the pressure as an injection pressure in the filter cleaning step. When the water level detected through the detection tube is lower than the allowable water level And a washing completion judgment step of judging that the washing of the filter is completed.

According to an aspect of the present invention, there is provided a cleaning method of a clogging filter of a groundwater drainage apparatus,

And a hold-lane board surrounded by a filter or a filter wrapped by a filter for collecting groundwater, wherein a height of the inspection vessel is equal to or higher than a height of the design stable water level of the groundwater, A filter clogging detecting step of detecting whether the filter is clogged,

Separating the sealing cap from the respective washing pipes for supplying the high-pressure washing water through the base concrete layer for washing the filter, communicating with the space portion partitioned by the drainage portion of the drainage portion or the hold- A preliminary washing step of lowering the water level of the groundwater by first washing the filter around the washing pipe,

The washing pipes communicate with the space partitioned by the drainage part or the drain pan of the drainage part to supply high-pressure washing water through the base concrete layer for washing the filter. Into a group of wash water discharge tubes for the washing tub,

The washing water is supplied to the washing pipes selected as the washing water supply pipe groups for supplying the washing water so that the washing water passing through the filter is discharged to the washing pipes of the washing water discharge pipe group in which the sealing cap is separated, And a filter cleaning step.

The cleaning method of the clogging filter of the groundwater drainage apparatus of the present invention can prevent the building from being damaged by the positive pressure by cleaning the clogged filter (the filter contaminated by the fine particles) of the groundwater drainage device for reducing the positive pressure of the building , Cleaning efficiency and reliability of the filter clogged by the fine particles can be improved.

1 is a sectional view showing a groundwater drainage apparatus for carrying out a clogging filter cleaning method of a groundwater drainage apparatus according to the present invention,
2 and 3 are sectional views showing a state in which a test tube for detecting a clogging state of a filter of a groundwater drainage apparatus is installed,
FIG. 4 is a sectional view showing a state where a test tube and a straight pipe are installed to detect a clogging state of a filter of a groundwater drainage device,
FIG. 5 is a block diagram showing a clogging filter cleaning method of a groundwater drainage apparatus according to the present invention. FIG.
6 is a partially cutaway perspective view showing a state where washing water is sprayed through a washing pipe of a groundwater drainage apparatus according to the present invention,
7 is a plan view showing a state where washing water is sprayed through a washing pipe of a groundwater drainage apparatus according to the present invention.

The cleaning method of the clogging filter of the groundwater drainage device according to the present invention is for cleaning the clogging filter of the groundwater drainage device for reducing the positive pressure of the building. Fig. 1 is a view for cleaning the clogging filter of the groundwater drainage device FIGS. 2 and 3 are cross-sectional views showing a state where a test tube for detecting the clogging state of the filter of the groundwater drainage device is installed.

Referring to the drawings, a groundwater drainage apparatus for carrying out a clogging filter cleaning method of a groundwater drainage apparatus according to the present invention includes a groundwater drainage apparatus, which is surrounded by a pipe 21 or a filter 30 surrounded by a filter for collecting groundwater, A drainage unit 20 including a drainage line 25 and a drainage line 25 and a drainage line 20 connected to the drainage unit 20 and a drainage unit 20 for collecting groundwater drained through the drainage unit 20. The drainage unit 20, (Not shown) is connected to the inside of the bottom plate 21 or the hold-down board 25 and penetrates through the base concrete layer 200. In order to insert a nozzle for injecting high-pressure washing water for washing the filter, And a cleaning pipe (40).

The cleaning pipe 40 is provided with a nozzle for injecting high-pressure cleaning water or a high-pressure cleaning water for cleaning the filter 30 surrounding the pipe 21 or the hold-lane board 25, 1 to 3 as shown in FIGS. 1 to 3, a vertically installed pipe connected to the drain pipe 21 or the drain pipe 25, or a slope installed for smooth supply and discharge of the cleaning nozzle I have. As shown in the drawing, a cleaning pipe (not shown) extending in the longitudinal direction of the hold-down board 25 and having a plurality of spray holes formed on the outer circumferential surface thereof may be connected. The spray holes formed in the cleaning pipe are radially formed on the outer circumferential surface of the cleaning pipe so that the filter 30 surrounding the hold-down board 25 can be cleaned.

The sealing cap 45 is coupled to the end of the washing pipe 40 to prevent the groundwater from flowing back through the washing pipe 40 when the washing pipe 40 is not in use. .

As shown in FIG. 4, some of the cleaning pipes 40 are connected to a horizontal connection pipe 51, which is connected to a wall of a building 52). The continuous straight pipe 52 may be connected to an outlet pipe (not shown) so that water can be discharged to the collection pipe 100 when the overflow occurs. The straight pipe 52 may be connected to the pipe 21 or the hold-lane board 25 without being connected to the cleaning pipe 40.

In addition, on the side adjacent to the drainage part, a test tube 70 for detecting the clogging of the filter can be installed at a height adjacent to the water permeable layer 61 made of sand or the like that surrounds the drainage part. The detection tube 70 is closed by the fine particles piled up in the groundwater into which the filter 30 is permeated, that is, the filter 30 constituting the drainage section 20 is discharged by using the water level or the pressure of the groundwater. If not, it is possible to detect whether the filter 30 is clogged by discharging groundwater through the test tube 70. That is, when the groundwater is discharged normally, the water level detected through the inspection tube 70 maintains the observation water level H1 substantially equal to the water level detected through the straight pipe, and the clogging of the filter 30 It is detected that the water level is higher than the water level detected by the straight pipe 52 or higher than the water level H2.

In the case where the filter is clogged by the fine particles in the groundwater drainage apparatus constructed as described above, the clogging filter cleaning method 100 according to the present invention for cleaning the clogging filter can be applied to the above- A filter plugging detection step of detecting and determining whether the filter 30 is clogged or not, that is, whether the filter is clogged by the fine particles, by comparing the water level of the ground water detected by the filter 30 with the water level detected through the detection tube 70 300).

The drainage apparatus 10 for preventing the generation of positive pressure is provided with a drainage board 25 and a drainage unit 25 which is formed by a filter 30 that surrounds the drainage board 25 or a drainage pipe 21 that is surrounded by a filter when the groundwater level rises The groundwater level is maintained at the observation water level H1 or less by discharging the groundwater to the water collection system 100 through the water level sensor 20. Particularly, when the groundwater is sufficiently discharged through the drainage part 20, the groundwater flows over the groundwater through the continuous straight pipe (in the case of the (52) permanent drainage device, there is no straight pipe). In this process, when the filter 30 is clogged by the moving fine grains during the discharge of the groundwater, the discharge of the groundwater is not smoothly performed, and the head of the groundwater rises to above the design safety level. In this case, since the nonwoven fabric as the filter 30 is clogged, the amount of overflow is reduced through the continuous straight pipe 53. When the groundwater is not sufficiently discharged, the groundwater level is raised by the undrained groundwater, and the groundwater rises above the water level of the test tube 70, that is, the observed water level H1, And is close to the water level H2. When the clogging of the filter 30 is relatively severe, the water is discharged through the test tube 70.

In view of this point, in the filter clogging detection step, as shown in FIGS. 1 and 4, the water level exceeding the observation water level H1 detected through the detection tube 70, H2, it is determined that the filter 30 is clogged by the fine particles of the soil, and if it is less than the observation water level H1 through the inspection tube 70, the filter is not blocked and drainage of the groundwater is normally performed (Step 310).

 If it is determined that the filter 30 of the groundwater drainage device 10 is blocked through the comparison step 310 of the filter clogging detection step 300 as described above, the filter 30 is backwashed through the cleaning pipe 40 A filter cleaning step 400 is performed.

The filter cleaning step 400 includes a preliminary cleaning step 500 that firstly filters the filter located around the cleaning tube 40 to lower the water level of the groundwater first. When the clogging of the filter is allowed to proceed beyond the permissible value, it is necessary to lower the water level of the groundwater as described above because there is a risk that the building will be damaged by the positive pressure acting on the building.

2, 3 and 6, the pre-cleaning step communicates with the space portion defined by the pipe 21 or the hold-lane board 25 of the drainage portion 20 to penetrate the base concrete layer The sealing cap 45 is separated from each of the cleaning pipes 40 for supplying the high-pressure cleaning water for cleaning the filter 30. [ Then, the washing water is sprayed to the washing pipes 40 and the preliminary washing water injection step 510 is performed to wash the filter 30 around the washing pipe 40, The water level of the groundwater is lowered to the observation water level H1 or less by allowing the water to be discharged through the rainboard 25 or the washing pipe. Here, the sealing cap 45 must be separated to prevent additional water pressure from being applied to a state in which a positive pressure higher than the allowable water level is applied.

In the preliminary washing water spraying step 510, the spraying pressure of the washing water is preferably sprayed at a pressure of 5 to 7 times the converted pressing pressure with the observed water level H1 of the observation tube 70.

 This preliminary cleaning step is a preliminary cleaning step to prevent the building from being damaged by the pressure exceeding the allowable value due to clogging of the filter beyond the allowable value. The preliminary washing step 500 may be selectively performed depending on the degree of clogging of the filter 30 without necessarily performing the washing process.

When the preliminary cleaning step is completed, a cleaning tube grouping step 410 is performed to group the cleaning tubes 40 to clean the filter 30 blocked by the fine particles.

6 and 7, the washing tubulation grouping step 410 includes a washing water pipe group 600 for supplying the washing pipes 40 with high-pressure washing water and a washing water supply pipe group 600 for supplying the washing water to the filter 30 in the reverse direction And a washing water discharge tube group 650 through which wash water is discharged through the washing tube.

The washing tubing grouping step 410 allows the washing water for washing the filter 30 to flow smoothly into a closed underground space. If the flow of the groundwater is not smooth when the washing water is supplied through the washing pipe 40, the separated foreign substances can not be separated from the filter 30 while washing the filter 30, 30). Therefore, in order to activate the fluidity of the ground water, the washing pipes for supplying the washing water and the washing pipes for discharging the washing water and the ground water are grouped to supply and discharge the washing water. The cleaning efficiency of the filter 30 can be improved. The washing tubing grouping step 410 may group the washing tubs so that the filter 20 is divided into a blocked area and backwashed a plurality of times.

When the cleaning pipes 40 are grouped, a sealing cap separating step 420 for separating the sealing cap sealing the cleaning pipe 40 is performed.

In the state where the sealed cap separating step 420 is performed as described above, the washing water injecting step 430 injects the washing water of the set pressure to the washing pipes 40 set by the washing water supplying pipe group.

The washing water spraying step 430 is connected to the discharge port of the pump 81 for pumping the washing water as shown in FIG. 6 and FIG. 7, and the spraying pipe 82 provided with the spraying nozzle is connected to the washing pipes 40 . A packing 83 for sealing is formed between the outer circumferential surface of the spray tube 82 and the inner circumferential surface of the washing tube 40 to prevent the washing water sprayed through the spray tube 82 from flowing back through the washing tube 40 Install it. In this state, the washing water injection step is performed by driving the pump and injecting the high-pressure washing water into the space surrounded by the filter 30 of the oil pipe 21 or the hold-lane board 25 through the injection pipe 82. At this time, a setting pressure converting step 431 is further provided so as to inject the jetting pressure of the washing water injected through the jetting tube 82 at a pressure converted into the allowable water level. At this time, the injection pressure and injection amount should be adjusted so that the water level of the test tube is below the allowable water level. If the allowable water level rises due to the injection of the washing water, the positive pressure acting on the building increases, which can damage the building. Therefore, the safety of the structure should be given priority when cleaning the filter.

It is preferable that the washing water spraying step is carried out at least 5 times in 5 minutes at a time. However, the present invention is not limited to this and can be determined by a separate washing completion judgment step 432.

The washing completion determination step 432 determines whether the washing water is sprayed through the washing tube 40 after the washing water is sprayed for a predetermined time in the washing water spraying step 430, It is judged that the cleaning of the filter is completed if the water level is below the observation water level H1.

The cleaning operation of the clogging filter of the groundwater drainage apparatus is completed by repeatedly performing the cleaning operation through the cleaning tubes 40 grouped in the cleaning tube grouping system as described above.

On the other hand, if the clogging of the filter is performed within a short time, and an urgent situation occurs, it is preferable that the permanent drainage system can be operated by partially normalizing it as described above.

As described above, the clogging filter cleaning method of the groundwater drainage device can backwash the clogging filter, which is inevitably generated in the process of draining the ground water, so that the drainage can not be smoothly caused by the clogging filter The increase of the positive pressure can be fundamentally prevented. Further, damage to the building can be prevented by the positive pressure. Also, it is possible to reduce the work flow and cost due to the maintenance work of the clogging filter. Particularly, by performing the preliminary cleaning step of cleaning the filter, it is possible to prevent the building from being damaged by the increase of the positive pressure beyond the allowable value due to clogging of the filter beyond the allowable limit.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

The clogged filter cleaning method of the groundwater drainage apparatus of the present invention is widely applicable to the backwashing of various filters in a closed space of various industrial facilities.

Claims (6)

And a hold-lane board surrounded by a filter or a filter wrapped by a filter for collecting groundwater, wherein a height of the inspection vessel is equal to or higher than a height of the design stable water level of the groundwater, A filter clogging detecting step of detecting whether the filter is clogged,
The sealing cap is separated from each of the washing pipes for supplying the high-pressure washing water through the base concrete layer to communicate with the space partitioned by the pipe or the hold-lane board to clean the filter, A preliminary washing step of supplying the water to the pipes to lower the level of the ground water by washing the filter around the washing pipe,
And a filter cleaning step of communicating with the space defined by the perforated pipe or the hold-lane board to penetrate the base concrete layer and supplying the wash water set for washing the filter to the washing pipes,
The filter cleaning step communicates with the space defined by the pipe or the hold-lane board to penetrate the base concrete layer. The washing pipes for washing the filter are connected to a washing water supply pipe group for supplying the washing water, Grouping the wash water into a group, and supplying wash water to the wash tubes selected as the wash water supply tube group for supplying the wash water, so that the wash water passed through the filter is discharged to the washing tube And a washing water injection step of washing the filter by allowing the water to be discharged to the outside. delete delete And a hold-lane board surrounded by a filter or a filter wrapped by a filter for collecting groundwater, wherein a height of the inspection vessel is equal to or higher than a height of the design stable water level of the groundwater, A filter clogging detecting step of detecting whether the filter is clogged,
The washing pipes communicate with the space partitioned by the pipe or hold-lane board to penetrate the base concrete layer and supply the washing water of a set pressure for washing the filter. The washing water pipes for supplying the washing water and the drain water A washing tubulation grouping step of separating the washing tubs into a group of washing water discharge tubes for the washing tub,
A sealing cap separating step of separating the sealing cap from the washing pipes of the washing water discharge tube group for discharging the washing water separated by the washing tube grouping step,
The washing water is supplied to the washing pipes selected as the washing water supply pipe group for supplying the washing water and the washing water passing through the filter is discharged to the washing pipes of the washing water discharge pipe group in which the sealing cap is separated, And a cleaning step of cleaning the clogged filter of the groundwater drainage device. 5. The method of claim 4,
The filter clogging detecting step may include a comparing step of determining that the filter is blocked if the level detected through the detecting tube is below the observation water level and the drainage is normal without the filter being blocked and the water level detected through the detecting tube is higher than the water- Wherein the dust collecting apparatus further comprises a dust collecting unit for dust collecting the groundwater. 5. The method of claim 4,
Further comprising a set pressure converting step of converting the allowable water level of the ground water into pressure in the filter washing step,
And a washing completion judging step of judging that the washing of the filter is completed if the water level detected through the inspection tube is below the observation water level.
KR1020150059667A 2015-04-28 2015-04-28 filter cleansing method of apparatus for draining ground water KR101770389B1 (en)

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Cited By (1)

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CN108612132A (en) * 2018-05-11 2018-10-02 河海大学 Based on the bridge anti-scouring system and installation method from sensing FRP grids

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KR102094157B1 (en) * 2019-10-02 2020-03-27 지에스이앤씨(주) Rodding eye system cleaning by high pressure permanent drainage materials for building
CN112342944A (en) * 2020-10-30 2021-02-09 李振基 Culvert anti-blocking drainage structure
CN116735274A (en) * 2023-06-14 2023-09-12 内蒙古北科交大机器人有限公司 Acid extraction sampling device and tank car cover assembly

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Publication number Priority date Publication date Assignee Title
KR101129402B1 (en) 2009-05-15 2012-03-27 홍종인 under ground water drainage apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108612132A (en) * 2018-05-11 2018-10-02 河海大学 Based on the bridge anti-scouring system and installation method from sensing FRP grids

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