KR20200142936A - Water intake structure for underground water having sealed cover - Google Patents

Abstract

The present invention relates to an underground water intake structure having a tubular well sealing cover which is easily installed, disassembled, and assembled. The underground water intake structure having a tubular well sealing cover comprises: a grouting part including a filling part filled with a grouting material to be formed, and a casing penetrating the filling part and allowing an intake pipe for receiving underground water to be embedded therein; a lower unit including a fixed flange fixed on the upper surface of the grouting part, a protective pipe of a hollow cylindrical shape extended upward from the fixed flange, and a first fastening flange formed on the upper end of the protective flange; an upper unit including a second fastening flange corresponding to the first fastening flange to be coupled to the lower unit, a first connection pipe extended downward from the second fastening flange to pass through the protective pipe to be connected to the intake pipe, a pressure measurement hole extended upward from the second fastening flange to be connected to move underground water to an underground water intake facility and allowing a pressure gauge for measuring the pressure in a tubular well to be installed on one side thereof, and a second connection pipe having a gas discharge hole in which an air vent for discharging gas floating in the tubular well can be installed; and a cover including a third fastening flange corresponding to the second fastening flange to be connected to the upper unit, an accommodation pipe of a hollow cylindrical shape extended upward from the third fastening flange and exposing an end of the second connection pipe through a side thereof while accommodating the second connection pipe therein, and a lid mounted to be opened and closed on the upper end of the accommodation pipe.

Description

Water intake structure for underground water having sealed cover

The present invention is applicable to large-diameter public wells, and relates to a groundwater intake structure provided with a well sealing cover having a sealed structure so as to prevent contamination of groundwater by introducing pollutants into the casing.

In general, groundwater refers to water that fills or flows in gaps between underground strata or rocks, and groundwater intake facilities are provided to pump groundwater so that such groundwater can be used as water for agriculture, industrial use, and living water for agricultural and fishing villages.

In general, groundwater has a better quality than surface water and has the advantage of securing stable water quantity through short-term facility construction, so in the case of Korea, which belongs to a water shortage country, a five-year plan for groundwater development was established under the leadership of the government from the 1960s. As a result, research technology has been systematized, and various research equipment and development equipment have been actively introduced.

In recent years, the contamination problem of groundwater has emerged due to the inflow of sewage through the groundwater well, and various measures to solve this problem have been enacted and implemented by law.

Conventionally, in order to block the inflow of contaminants through the groundwater well, various sealing devices have been proposed to seal the upper end of the casing of the groundwater well. However, the structure is not easy to install due to the complicated structure, and cleaning or maintenance of the groundwater well There was a problem that was not practical because it was difficult to disassemble or assemble for repair.

In the case of Jeju Special Self-Governing Province, which is the best administrative area for groundwater management in Korea, the method used to perform secondary filling grouting after primary filling grouting due to the revision of related laws and regulations on groundwater development and installation standards for facilities using facilities. In accordance with these regulations, it was necessary to develop a structure that can prevent the inflow of contaminants into the casing with only the fixed-ho cover after the first filling grouting in accordance with these regulations.

Korean Patent Registration No. 10-1040364

Therefore, it is an object of the present invention to effectively block contaminants from flowing into the casing to prevent contamination of groundwater, can be applied to large public wells, and provide a groundwater intake structure that is easy to install, disassemble, and assemble. I want to.

The groundwater intake structure (hereinafter referred to as "the structure of the present invention") provided with a pipe well sealing cover of the present invention for achieving the above object passes through the filling portion formed by filling the grout material and the filling portion, and collects groundwater therein. Grouting unit including a casing in which the intake pipe is embedded; A lower unit including a fixing flange fixed to an upper surface of the grouting part, a hollow cylindrical protective tube extending upward from the fixing flange, and a first fastening flange formed on an upper end of the protective tube; A second fastening flange corresponding to the first fastening flange so as to be coupled to the lower unit, a first connecting tube extending downward from the second fastening flange and passing through the inside of the protective tube body to be connected to the water intake tube, A pressure measuring hole that extends upward from the second fastening flange and connects to the groundwater intake facility so that groundwater can be moved, and a pressure gauge can be installed on one side to measure the pressure inside the well, and a gas floating inside the well. An upper unit including a second connection pipe having a gas discharge hole through which an air vent is installed; A third fastening flange corresponding to the second fastening flange so as to be coupled to the upper unit, and extending upward from the third fastening flange and receiving the second connector therein, the end of the second connector is laterally It characterized in that it comprises a; and a hollow cylindrical receiving tube body to be exposed, and a cover including a cover mounted to be opened and closed at an upper end of the receiving tube body.

As an example, a recognition unit for displaying at least one of letters, numbers, and figures is formed on the upper surface of the cover.

As an example, the lower unit includes an insertion pipe extending a predetermined length below the fixing flange, the insertion pipe being inserted between the casing and the filling part, and packing of an elastic material between the fixing flange and the grouting part. It is characterized by being published.

As an example, the casing includes an outer casing in contact with the filling portion, and an inner casing that is spaced apart from the outer casing inside the outer casing and is inserted into the ground deeper than the depth of the filling portion.

As an example, the outer circumferential surface of the outer casing is characterized in that a plurality of protruding center holders are formed.

As an example, the center holding member is characterized in that it is configured in a bar shape in which an inclined gradient is formed upward from the outer periphery of the outer casing.

As an example, the center holding hole is configured at the lower end of the outer casing, and a grout injection pipe is formed inside the hole while the end of the grout injection pipe made of a flexible material is fixed to the center holding hole. After placing the outer casing so that the spirally wound shape is formed, the grout material is discharged while drawing the grout inlet pipe of the spirally wound shape from the outer casing so that the grout material is filled in a spiral upward direction from the bottom to constitute a filling part. It is characterized.

As described above, the structure of the present invention has the advantage of being able to effectively block contaminants from flowing into the groundwater through the well.

In addition, the structure of the present invention has the advantage of being easy to maintain and manage because it can monitor the level of groundwater and the pressure inside the well.

1 is a perspective view showing the structure of the present invention,
Figure 2 is an exploded perspective view of the main components in the structure of the present invention shown in Figure 1,
Figure 3 is a side cross-sectional view showing the structure of the present invention shown in Figure 1,
4 is a side cross-sectional view showing an embodiment of a grouting unit as a configuration of the present invention,
5 is a side cross-sectional view showing another embodiment of an outer casing in the grouting unit,
6 is a side cross-sectional view showing another embodiment of external tasing in a grouting unit.

Hereinafter, a method according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The structure (1) of the present invention is a structure that interconnects the water intake pipe (a) extending through the ground to collect groundwater and the groundwater intake facility (b) as shown in FIG. It characterized in that it comprises a unit (3), an upper unit (4), and a cover (5).

That is, the structure (1) of the present invention includes a filling portion (21) formed by filling a grout material and a casing (22) that penetrates the filling portion (21) and has a water intake pipe (a) for collecting groundwater therein. Grouting unit 2 including; A fixing flange 31 fixed to the upper surface of the grouting part 2, a hollow cylindrical protective tube 32 extending upward from the fixing flange 31, and a first formed on the upper end of the protective tube 32 A lower unit 3 including one fastening flange 33; A second fastening flange 41 corresponding to the first fastening flange 33 so as to be coupled to the lower unit 3, and extending downward from the second fastening flange 41 to the inside of the protective tube 32 The first connection pipe 42 connected to the water intake pipe (a) through and extends upward from the second fastening flange 41 so that the groundwater can be moved to the groundwater intake facility (b), A pressure measurement hole 431 through which a pressure gauge (e) can be installed for measuring the pressure inside the well, and a gas discharge hole 432 through which an air vent (f) for discharging the gas floating inside the well can be installed. An upper unit 4 including a second connector 43 formed; A third fastening flange 51 corresponding to the second fastening flange 41 so as to be coupled to the upper unit 4, and extending upward from the third fastening flange 51, the second connector ( 43) a hollow cylindrical receiving tube body 52 that exposes the end of the second connector 43 to the side while being accommodated, and a cover 53 mounted to be opened and closed at the top of the receiving tube body 52 It characterized in that it includes; a cover (5) comprising a.

The upper unit 4 has a first connection pipe 42 whose lower end is connected to the water intake pipe (a) to interconnect the water intake pipe (a) and the groundwater intake facility (b), as described above, and the first connection The second connector 43 extending from the upper end of the tube 42, formed between the first connector 42 and the second connector 43, and can be flange-coupled with the lower unit 3 It includes a second fastening flange (41).

The first connector 42 extends downward through the inside of the lower unit 3 to be described later, and the drawing number is not shown so that it can be connected to the water intake pipe a as described above, but the connection flange is Is formed.

In addition, the connection flange formed at the lower end of the first connection pipe 42 has no drawing number, but an inlet groove is formed on one side, which is a water level extending downward through the second fastening flange 41 to be described later. It is formed from one edge to the inside so that the observation tube (not shown in the drawing number) can pass.

The second connector 43 extends from an upper end of the first connector 42 to an upper end, and a hollow is in communication with the first connector 42. In addition, the upper outlet of the second connector 43 is opened toward the horizontal direction because it is curved to be connected to the extension pipe d extending in the horizontal direction.

Although the drawing number is not shown so that the end of the second connection pipe 43 can be flange-coupled with the extension pipe (d), a connection flange is formed, and the extension pipe (d) is connected to the groundwater intake facility (b). Since it is connected, the groundwater collected through the intake pipe (a) passes through the upper unit (4) and then flows into the groundwater intake facility (b) and is used as agricultural water, industrial water, or household water.

A pressure measuring hole 431 and a gas discharge hole 432 in which a pressure gauge e and an air vent f may be respectively installed are formed in the second connector 43.

A pressure gauge (e) is installed in the pressure measuring hole 431 so that the pressure state inside the public well can be observed from the outside, and the air vent (f) installed in the gas discharge hole 432 floats inside the well. By discharging the gas to the outside, it prevents the gas from being mixed into the groundwater and also prevents the discharge output of the discharge pump (not shown) from being lowered by the gas.

A plurality of fastening holes penetrating the upper and lower surfaces of the second fastening flange 41 are formed to be spaced apart from each other in the circumferential direction, and are bolted to the lower unit 3 to be described later through fastening bolts.

The second fastening flange 41 is formed in a disk shape whose outer diameter is relatively larger than that of the first connector 42 and the second connector 43, and a water level observation tube (not shown) on one side. A water level observation part 411 for installing the is formed, and a cable entry port 412 is formed on the other side to allow a power cable (not shown) to enter the well.

The water level observation part 411 is a cylindrical member protruding upward from the upper surface of the second fastening flange 41, and a thread is formed on the outer circumferential surface of the upper end, so after inserting the water level observation tube, an observation cover (drawing number not shown) ) To block the inflow of contaminants through the water level observation unit 411.

The cable entry port 412 provides a passage through which a power cable can be inserted to supply power to the water intake pump, and the cable entry port 412 also blocks the inflow of contaminants through a separate cover surrounding the power cable.

In addition, on the upper surface of the second fastening flange 41, a hoisting ring 413 is provided on both sides opposite to each other around the second connector 43. The hoisting ring 413 is formed to connect with working devices such as a crane for transporting the upper unit 4, and the position or number of the hoisting ring 413 may be variously formed as needed.

The lower unit (3) is fixed to the ground and is coupled to the upper unit (4) to support the upper unit (4), a first fastening flange (33) coupled to the second fastening flange (41), 1 A cylindrical protective tube 32 extending downward from the fastening flange 33, and a fixing flange 31 formed under the protective tube 32 and fixed to the grouting part 2 through anchor bolts, and fixed It includes an insertion pipe 34 extending to the lower portion of the flange 31 and surrounding the upper portion of the casing 22.

The first fastening flange 33 has an outer diameter corresponding to the second fastening flange 41, and fastening holes corresponding to the fastening holes formed in the second fastening flange 41 are formed to be spaced apart along the circumferential direction. . So, as described above, after installing the fastening bolts through the fastening holes of the second fastening flange 41 and the first fastening flange 33, the nut is fastened to the second fastening flange 41 and the first fastening flange 33. Combine with each other.

In particular, as shown in FIG. 2, a gasket made of elastic material (not shown in the drawing number) is installed between the second fastening flange 41 and the first fastening flange 33 to prevent the second fastening flange 41 and the second fastening flange. 1 It prevents the formation of a spaced space through which contaminants can enter between the fastening flanges 33.

The protective tube body 32 is a hollow cylindrical member having a relatively larger inner diameter than the first connector 42, and a passage is provided so that the first connector 42, the water level observation tube, and the power cable can extend underground. And protects against damage from earth pressure or external impact.

In the fixing flange 31, a plurality of fixing holes are formed to be spaced apart along the circumferential direction, and the fixing flange 31 is fixed to the grouting part 2 through anchor bolts. When fixing the fixing flange 31 to the grouting portion 2, a packing 35 may be further installed between the fixing flange 31 and the upper surface of the grouting portion 2.

The packing 35 may be formed of a rubber or synthetic resin material having elasticity like a gasket, and is installed so that the shock applied to the lower unit 3 is not transmitted to the casing 22 and can be buffered.

That is, when pumping is interrupted in the process of pumping groundwater, a large load may be transmitted to the casing 22 through the lower unit 3 due to a water-hammer phenomenon occurring in the pipe. When a large load is applied to the casing 22, the casing 22 is cracked or cracks occur, increasing the likelihood that contaminants flow into the casing 22.

Therefore, the load of the lower unit 3 is not directly transmitted to the casing 22 through the packing 35 having elasticity. In addition, since the packing 35 is formed of rubber or synthetic resin material capable of elastic deformation, if the packing 35 is installed between the fixing flange 31 and the upper surface of the grouting part 2, the space between them disappears. It can maximize the sealing effect to block the material.

The insertion pipe 34 extending below the fixing flange 31 serves to fix the casing 22 by being posted on the bonding surface between the casing 22 and the grouting portion 2.

The grouting portion 2 includes a filling portion 21 formed by filling the grout material, and a casing 22 penetrating the filling portion 21 and having an intake pipe (a) for collecting groundwater therein. It features.

In the basic example of FIG. 1, when forming an underground water intake facility, a grouting hole having a diameter larger than that of the casing 22 is excavated at a point where groundwater is to be collected, and then the grouting hole is filled with grout material to fill the filling part ( 21) is formed.

First, after the filling part 21 is formed, a hole having a diameter larger than that of the casing 22 is excavated, and the casing 22 is inserted and installed so that the grouting part 2 is constructed.

In the grouting part 2 constructed in this way, since a space is formed between the inner circumferential surface of the filling part 21 and the casing 22, when an external force acts, the casing 22 is not fixed, so flow occurs. It may lead to breakage of the casing 22. Therefore, by inserting the insertion pipe 34 between the casing 22 and the inner circumferential surface of the filling portion 21, the casing 22 is fixed so that it cannot flow.

The insertion pipe 34 is preferably formed to have an inner diameter corresponding to the outer circumferential diameter of the casing 22 because the casing 22 must be fitted therein.

As described above, the insertion pipe 34 is installed to be coupled to the upper end of the casing 22, and the fixing flange 31 is placed on the upper part of the grouting part 2 (filling part 21) with the packing 35 installed. To the top) through anchor bolts.

Then, by fastening the upper unit 4 to the upper portion of the lower unit 3, the protective concrete c is poured out of the protective tube 32 as shown in FIG. 1.

The cover 5 is a third fastening flange 51 corresponding to the second fastening flange 41 so as to be coupled to the upper unit 4, as shown in FIG. 1, and from the third fastening flange 51. A hollow cylindrical receiving tube body 52 extending upward and allowing the end of the second connecting tube 43 to be exposed to the side while the second connecting tube 43 is accommodated therein, and the receiving tube body 52 It is characterized by consisting of a cover (5) including a cover (53) mounted to be opened and closed at the top.

The pressure gauge (e), air vent (f), etc. configured in the second connection pipe 43 are arranged to be exposed so as to be monitored at any time.

In addition, as shown in FIG. 1, a recognition unit 531 displaying at least one of letters, numbers, and figures is formed on the upper surface of the cover 53 so that the history of the water intake structure to which the present invention is applied is clearly recognized from the outside. It makes sense.

In a state in which the lower unit 3 is fixed to the ground by the structure (1) of the present invention mentioned above, the first connector 42 of the upper unit 4 is the protective tube body 32 of the lower unit 3 It passes through the inside and is connected to the intake pipe (a).

And the upper unit (4) is the second fastening flange (41) of the lower unit (3) and the second fastening flange (33) of the lower unit (3) is coupled to each other through a fastening bolt with the gasket interposed between the inside of the casing (22) It can block contaminants from entering.

In addition, the upper unit 4 is equipped with a pressure gauge for measuring the pressure inside the well, an air vent capable of discharging the gas inside the well, and a water level observation pipe for observing the level of groundwater in the well. Can be easily checked, and this configuration is also protected by the cover 5 as seen above.

Meanwhile, as mentioned above, the grouting part 2 is constructed by inserting and installing the casing 22 after excavating a hole having a larger diameter than the casing 22 after filling the grout material so that the filling part 21 is formed. However, in the process of excavating a hole in the filling section 21, there may be problems such as the introduction of contaminants into the groundwater due to cracks in the filling section 21, and a decrease in structural integrity due to incomplete installation of the casing 22. have.

Accordingly, in the present invention, as shown in FIG. 4, the casing 22 forms a space between the outer casing 221 in contact with the filling part 21 and the outer casing 221 inside the outer casing 221 And it presents an example including an inner casing 222 inserted into the ground deeper than the depth of the filling part 21. In addition, the outer circumferential surface of the outer casing 221 is configured with a plurality of protruding center holders 221-1.

In order to construct the grouting part 2 of the embodiment shown in FIG. 4, first, a perforation is made to a certain depth on the surface, and an outer casing 221 smaller than the diameter of the perforation is placed, and the inner periphery of the perforation and the outer casing The grout material is filled between the outer peripheries of the 221 so that the filling part 21 is configured.

By doing this, there is no need for a process of separately excavating the filling part 21 to form a hole. Next, another perforation (referred to as a second perforation) is made below the perforation so as to have a smaller diameter than the outer casing 221 inside the outer casing 221, and the inner inner part of the second perforation from the ground surface It is to mount the casing 222.

By constructing in this way, the casing 22 forms a space between the outer casing 221 in contact with the filling portion 21 and the outer casing 221 in the interior of the outer casing 221, and the filling portion 21 It characterized in that it comprises an inner casing 222 inserted into the ground deeper than the depth of ).

The outer casing 221 functions as a formwork and also functions as an order wall.

The outer casing 221 is characterized in that it is configured with a center retainer (221-1) protruding a plurality of the outer periphery. An example of the center retainer 221-1 is configured in a curved handle shape as shown in FIG. 4, and the reason for this configuration is to give elasticity to the shape in the case of a non-smooth surface of the inner periphery of the perforation. It is also to correct this so that the center of the outer casing 221 is maintained in the perforation.

In addition, when the outer casing 221 is placed in the perforation by making the center retainer 221-1 in a handle shape, the outer casing 221 is perforated by pressing the inner periphery of the perforation. It is to be fixed in. The reason for this fixation is to control the problem that the outer casing 221 floats due to the filling pressure of the grout material when the grout material is filled in a later process, and the grout material leaks to the bottom of the outer casing 221.

In addition, an embodiment for further reinforcing the fixing force for preventing the grout material from leaking is shown in FIG. 5, and the center retainer 221-1 presented in FIG. 5 is a top surface at the outer periphery of the outer casing 221. When filling the grout material in a later process, it is made to be constructed in a bar shape with an inclined gradient in the direction so that it can be easily placed due to the elasticity of the center holder 221-1, which is placed through the perforation of the outer casing 221. Even if the filling pressure of the grout material acts, the end of the center holder 221-1 presses the inner periphery of the perforation so that the lifting of the outer casing 221 is controlled.

That is, when the present embodiment is applied, the outer casing 221 is fixed so that it is easily set in the downward direction in the perforation, but the upward drawing is not easy.

On the other hand, it may be necessary to remove the outer casing 221 configured as described above when necessary, such as a closed hole. However, in the present invention, since the outer casing 221 is made of a degradable material, such disassembly is not required, and thus an embodiment is proposed to facilitate post-management.

To this end, of course, the outer casing 221 must be made of a degradable material, but the outer casing 221 has at least a strength enough to maintain its shape even when the grout material is filled in a post process, and the strength having resistance to earth pressure after construction Since it must be expressed, it is reasonable to use a biodegradable resin.

For example, the material of the outer casing 221 is made of a biodegradable resin, so that after the outer casing 221 is buried in the ground, it is naturally decomposed at the point when its function is fulfilled, so that the structure according to the construction method of the present invention can be easily disassembled and It is desirable to prevent secondary contamination.

To this end, in the present invention, a resin containing 30 to 60 parts by weight of dicarboxylic acid and 5 to 25 parts by weight of polyorganosiloxane based on 100 parts by weight of cyclodextrin, which is an oligosaccharide, is used as the naturally degradable resin, or corn as another embodiment Based on 100 parts by weight of PLA (polylactide) extracted from starch, a resin containing 1 to 10 parts by weight of PBAT (Polybutylene adipate-coterephthalate) of a petroleum-based biodegradable resin is presented.

In addition, the biodegradable resin contains 10 to 20 parts by weight of an inorganic filler consisting of one or a mixture of two or more of hydroxyapatite, calcium carbonate, and talc based on 100 parts by weight of cyclodextrin or 100 parts by weight of PLA (polylactide). Strength, elasticity, and durability of the outer casing 221 may be increased by further including a portion.

Meanwhile, in configuring the filling part 21, the grout material must be tightly filled between the inner periphery of the perforation and the outer periphery of the outer casing 221 to increase the blocking efficiency of pollutants. To this end, the present invention proposes an embodiment as shown in FIG. 6.

In this embodiment, as shown in FIG. 6, the center retainer 221-1 is configured at the lower end of the outer casing 221, a plurality of discharge holes 61 are formed, and a grout injection pipe made of a flexible material. While the end of (6) is fixed to the center holder (221-1), the outer casing 221 is rotated when the outer casing 221 is placed inside the perforation, so that the grout injection pipe 6 It is characterized in that a shape wound in a spiral form is formed in the casing 221.

In more detail, after fixing the grout injection pipe 6 to the center holding hole 221-1 of the outer casing 221 using a fixture (fixed enough to be disassembled by the pulling force), In the process of placing the casing 221, or by rotating the outer casing 221 after being placed, the grout injection pipes 6-1 and 6-2 surround the outer casing 221 as shown in FIG. It is to make it form.

Next, the grout material is discharged while drawing the grout injection pipe 6 spirally wound from the outer casing 221 so that the grout material is helically filled from the bottom to the top.

That is, the grout material is filled while drawing the grout inlet tube 6 from the bottom to the top, but in the previous step, the grout inlet tube 6 is wound around the outer casing 221 at the outer periphery of the grout inlet tube 6 When drawing, a spiral flow is formed from downward to upward.

Due to this spiral flow, in FIG. 6, the grout material is also helically filled from the bottom to the top by the grout injection pipes 6-1 and 6-2, so that it is tightly sealed between the perforation and the outer casing 221. Filling takes place.

It will be appreciated by those skilled in the art through the above description that various changes and modifications can be made without departing from the technical idea of the present invention. Therefore, the technical scope of the present invention is not limited to the contents described in the detailed description of the specification, but should be determined by the claims.

1: structure of the present invention 2: grouting unit
3: lower unit 4: upper unit
5: cover

Claims (7)

A grouting portion including a filling portion formed by filling the grout material and a casing in which a water intake pipe for collecting groundwater is embedded therein through the filling portion;
A lower unit including a fixing flange fixed to an upper surface of the grouting part, a hollow cylindrical protective tube extending upward from the fixing flange, and a first fastening flange formed on an upper end of the protective tube;
A second fastening flange corresponding to the first fastening flange so as to be coupled to the lower unit, a first connecting tube extending downward from the second fastening flange and passing through the inside of the protective tube body to be connected to the water intake tube, A pressure measuring hole that extends upward from the second fastening flange and connects to the groundwater intake facility so that groundwater can be moved, and a pressure gauge can be installed on one side to measure the pressure inside the well, and a gas floating inside the well. An upper unit including a second connection pipe having a gas discharge hole through which an air vent for installation is formed; And
A third fastening flange corresponding to the second fastening flange so as to be coupled to the upper unit, and extending upward from the third fastening flange and receiving the second connector therein, the end of the second connector is laterally A cover including a hollow cylindrical receiving pipe body to be exposed and a cover mounted to be opened and closed at an upper end of the receiving pipe body.
The method of claim 1,
An underground water intake structure provided with a pipe well sealing cover, characterized in that a recognition part for displaying at least one of letters, numbers, and figures is formed on the upper surface of the cover.
The method of claim 1,
The lower unit includes an insertion pipe extending a predetermined length below the fixing flange, the insertion pipe being inserted between the casing and the filling part, and a packing made of elastic material between the fixing flange and the grouting part. Groundwater intake structure provided with a well sealing cover, characterized in that.
The method of claim 1,
The casing includes an outer casing in contact with the filling portion, and an inner casing that is spaced apart from the outer casing in the inner casing and is inserted into the ground deeper than the depth of the filling portion. Equipped groundwater intake structure.
The method of claim 1,
Groundwater intake structure provided with a pipe well sealing cover, characterized in that a plurality of protruding centers are formed on the outer circumferential surface of the outer casing.
The method of claim 5,
The center holding unit is a groundwater intake structure provided with a pipe well sealing cover, characterized in that it is configured in a bar shape in which an inclined gradient is formed upward from the outer periphery of the outer casing.
The method of claim 5,
The center holding unit is configured at the lower end of the outer casing, a plurality of discharge holes is formed and the end of the grout injection pipe made of a flexible material is fixed to the center holding unit, and the grout injection pipe is inserted into the outer casing. After the grout is placed so that the spirally wound shape is formed in the outer casing, the grout material is discharged while drawing the grout inlet pipe of the spirally wound shape from the outer casing, and the grout material is filled in a spirally upward direction from the bottom to form a filling part Groundwater intake structure equipped with a well sealing cover.

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