KR102388171B1 - Vertical Hole applied with Drainage Structure of Precast Segment and Drainage Construction Method for Vertical Hole Using the Same - Google Patents

Abstract

The present invention relates to a drainage structure of a precast segment, a vertical hole having the drainage structure applied thereto, a method for forming a drainage structure of a precast segment and a drainage construction method using the same, the vertical hole comprising: a horizontal drainage groove in the form of a concave groove extending to both ends in the lateral direction of a block in the circumferential direction of the segment on an upper or lower surface of the block; a vertical drainage groove in the form of a concave groove extending to both ends of the upper and lower surfaces of the block in the heightwise direction of the segment at a central part of both ends in the lateral direction of the block; and a central drainage hole connected to the horizontal drainage groove by penetrating the upper and lower surfaces of the block in the height direction of the vertical hole at a position separated by an identical interval from an end at one side and an end at the other side of each block. Therefore, a drainage connected in a horizontal direction or in a vertical direction is formed inside the segment or the wall surface of the vertical hole when the segment of the wall surface of the vertical hole is formed by connecting the block.

Description

{Vertical Hole applied with Drainage Structure of Precast Segment and Drainage Construction Method for Vertical Hole Using the Same}

The present invention relates to a drainage structure applied to a vertical sphere of a top-down precast segment, and more particularly, a horizontal drainage groove in the form of a concave groove extending to both ends in the lateral direction of the block along the segment circumferential direction on the upper or lower surface of the block , a vertical drainage groove in the form of a concave groove extending to both upper and lower ends of the block along the height direction of the segment at the center of both lateral ends of the block and connecting to a horizontal drainage groove, spaced at equal intervals from one end and the other end of each block It consists of a horizontal drainage groove and a central drainage hole that penetrates the upper and lower surfaces of the block along the vertical sphere height direction at the point, and is connected horizontally and vertically inside the segment or vertical sphere wall when connecting blocks to form a segment or vertical sphere wall It relates to a drainage structure of a precast segment in which a drainage channel is formed, a vertical sphere to which the drainage structure is applied, and a method for constructing a vertical sphere of a precast segment using the same.

In general, when constructing underground facilities such as subways, underground tunnels, underground multi-story parking lots, underground pipelines, ventilation ducts, emergency passages, electric power outlets, and communication ports, the ground is excavated in a circular shape along the downward direction from the surface of the earth, and the formwork installed inside the excavation surface By pouring concrete on the wall, a vertical sphere made of concrete walls is formed.

In addition, recently, in order to shorten the time required for concrete pouring and curing in the formwork and to improve the construction speed, a plurality of arch-shaped precast blocks are connected to form a ring-shaped segment, and a vertical sphere is constructed. Top-down precast segment vertical sphere construction method in which the segment laminate is moved downward along the excavation direction by the weight of the segment laminate or the indenter installed on the upper part of the segment laminate by repeating the stacking of segments at the location and excavation of the lowermost segment This was developed.

During the downward movement of the segment stack during the construction of the top-down precast segment vertical sphere, due to the uneven composition of the soil forming the ground, the ground with high frictional force such as soft ground or clay may be partially formed, As the downward movement speed for each part of the segment laminate or the magnitude of the friction force between the outer wall of the segment laminate and the excavation surface of the ground works differently, uneven descent of the segment laminate may occur, resulting in inclined settlement of the constructed vertical sphere.

When the vertical sphere is inclined to subside, a gap may be formed in the connecting surface between each segment or block constituting the vertical sphere and leakage may occur. Since it is very difficult to block the leakage in the spaced area between blocks, there was a problem that the cause of the leakage had to be blocked during the construction process.

The occurrence of leaks in the connection between segments or blocks as described above causes an increase in maintenance cost of the vertical sphere as additional leak blocking reinforcement work is performed after the construction of the vertical sphere is completed, and even if a small leak occurs at a level where there is no problem in the function or safety of the vertical sphere , as a new construction method, the reliability of the construction method itself of the top-down precast segment vertical sphere, which is gradually expanding the scope of application, can be greatly reduced.

In order to solve this problem, by installing waterproofing materials such as water-expandable gaskets and water-repellent materials on the bonding surfaces of adjacently connected blocks of the vertical sphere of the top-down precast segment, or by installing waterproof grout on the outer peripheral surface of the segment, water leakage from the bonding surface gap The waterproof construction method that blocks the occurrence is widely applied.

However, the waterproof construction method using waterproofing material installation or waterproof grout construction is a process of aligning segments when stacking segments due to the nature of the construction method of stacking heavy blocks, or in the process of moving down due to ground excavation after segment stacking, between segments connecting up and down It is easy to breakage of the inserted or applied waterproofing material due to lateral relative movement or lateral frictional force action.

Therefore, in the top-down segment vertical sphere structure precision construction method of Republic of Korea Patent Publication No. 10-2176930 (registered on November 4, 2020), an induction drain hole is formed along the vertical direction on the outer surface of the block constituting the outer wall surface of the vertical sphere, A construction method is proposed to prevent infiltration of water from entering the inner wall of the vertical hole by allowing rainwater or groundwater flowing into the vertical hole from the ground to be discharged along the induction drain.

However, as shown in FIGS. 1 and 2, the structural stability of the vertical sphere 1 is increased through the integration of the vertical sphere 1 and the ground, and the ground bearing capacity according to the solidification of the excavated ground is increased. In order to reduce the permeability of rainwater or groundwater in the vertical hole (1), the grout (2) layer should be formed by injecting fillers such as cement between the outer wall of the constructed vertical hole (1) and the excavated surface of the ground, In the case of the vertical hole (1) according to the construction method, the filler material injected during the formation of the soil or grout (2) layer separated from the excavation surface of the ground blocks the induction drain hole exposed on the outer wall of the vertical hole (1) while blocking the vertical hole (1) There was a problem that the drainage function did not function normally.

Republic of Korea Patent Publication No. 10-2176930 (Registered on Nov. 4, 2020)

In an embodiment of the present invention, in the construction of the top-down precast segment vertical sphere, the seepage water penetrating into the segment or inter-block connection part is induced and drained along the drainage channel formed inside the segment, and after the vertical sphere construction is completed, the leakage blocking reinforcement construction is additionally performed. Provides a drainage structure and drainage structure construction method for a precast segment vertical sphere that can prevent an increase in maintenance cost of a vertical sphere and significantly improve the reliability of a top-down precast segment vertical sphere whose application range is gradually expanding as a new construction method aim to do

According to an embodiment of the present invention, a ring-shaped segment formed by connecting a plurality of precast arch-shaped blocks laterally to a vertical sphere excavation surface is inserted, and the side ends of the blocks stacked on top are connected to the lower part. By repeating the stacking of segments and excavation of the ground so as to be located in the center of the blocks of the segments to be arranged, the segments are moved downward to form the wall surface of the vertical sphere, but either the upper surface or the lower surface of each block constituting the segment, or the central part of both sides Horizontal drainage grooves that are formed to form a concave groove recessed in the height direction of the block and extend to both ends in the lateral direction of the block along the circumferential direction of the segment; Vertical drainage grooves extending to both upper and lower ends of the block along the height direction of the segment to form a concave groove recessed by It is formed at points spaced apart from each other at equal intervals and is composed of a horizontal drain groove and a central drain hole that passes through the upper and lower surfaces of the block along the height direction of the vertical sphere and connects the blocks laterally to form a horizontal drain groove of each block when forming a segment. and vertical drainage grooves are connected to each other to form horizontal and vertical drainage channels inside the segments, and the central drainage holes between segments connected vertically when forming vertical spheres by stacking segments are connected to each other in a straight line.

According to an embodiment of the present invention, a vertical wall wall is formed by stacking a plurality of segments, but a central drain hole formed in the direction of one end of the block of a specific segment is in line with the central drain hole formed in the direction of the other end of the block of the segment stacked up or down The vertical drainage groove and the central drainage hole of each segment are connected to each other with the horizontal drainage grooves and vertical drainage grooves of other segments stacked by connecting upwards or downwards, and horizontally and vertically across the inside of the vertical wall wall. By forming a connecting drain, the vertical drain groove and the central drain hole of the lowermost segment are connected to the drain facility of the vertical hole.

According to an embodiment of the present invention, the central drain hole of each block constituting the same segment of one or more layers is divided up and down to include an upper central drain hole and a lower central drain hole, and a concave groove-shaped inspection hole formed along the inner surface of each block is installed. The upper central drain hole and the lower central drain section connection part are exposed toward the inner wall of the vertical port through the Reduce the water pressure acting on the drain.

According to an embodiment of the present invention, the upper central drain hole and the lower central drain hole are respectively formed inside the upper central drain pipe and the lower central drain pipe having a pipe shape. buried and formed.

According to an embodiment of the present invention, the drainage facility is installed in the vertical drainage groove and the central drainage port of the lowermost segment, a collection box for collecting the infiltrated water discharged through the vertical drainage groove and the central drainage hole, and storing the infiltrated water to a sewage treatment facility A floor drain pipe that discharges, a water collection pipe that discharges the infiltrated water collected in the collection box to the floor drain pipe, and is installed inside the collection box to filter foreign substances in the seepage water, reduce the water pressure acting on the water collection pipe, and use a water collecting filter that is detachable from the collection box. is done

According to an embodiment of the present invention, a drain cap is mounted on the upper part of the central drain hole formed in the uppermost segment to close the upper end of the central drain hole, and at least the horizontal drain groove and the vertical drain groove are the basis of at least the horizontal drain groove and the vertical drain groove on the contact surface of each block. A strip-shaped water stop material spaced apart from the horizontal or vertical drainage grooves at regular intervals in the segment circumferential direction to include the direction is formed.

According to an embodiment of the present invention, it prevents the occurrence of leakage in the connection part between segments or blocks during the construction of the top-down precast segment vertical sphere, thereby preventing the increase in the maintenance cost of the vertical sphere due to the additional performance of the leak blocking reinforcement construction after the completion of the vertical sphere construction, As a new method, there is an effect that can greatly improve the reliability of the method of the vertical sphere of the top-down precast segment, which is gradually expanding the scope of application.

According to an embodiment of the present invention, the horizontal and vertical drainage grooves, the vertical drainage grooves, and the central drainage holes formed in each block and the inter-segment coupling surface of the top-down precast segment vertical sphere are connected to each other, and are connected in the horizontal and vertical directions throughout the inside of the vertical sphere wall surface It has the effect of blocking water leakage into the inner wall of the vertical hole by discharging the infiltrated water flowing into the wall of the vertical hole directly to the drainage facility by forming a drainage channel.

According to an embodiment of the present invention, since the drain channel formed by connecting the horizontal drain groove, the vertical drain groove and the central drain hole to each other is located inside the wall surface of the vertical hole, the filler injected when the soil or grout layer separated from the ground excavation surface is formed into the drain channel It has the effect of preventing the occurrence of blockage of the drainage channel as it flows in.

According to an embodiment of the present invention, by forming a central drain hole at a point spaced at the same distance from the end of one side and the end of the other side of each block constituting the vertical sphere, the blocks that are connected and stacked vertically during construction of the vertical sphere are zigzag. There is an effect that the infiltration water can be discharged more smoothly while the central drain hole between the upper and lower blocks connected in the process of arrangement is connected in a straight line with each other.

According to an embodiment of the present invention, by installing a detachable filter in the central drain port of each block constituting some segments, there is an effect of filtering foreign substances in the infiltrated water flowing along the drainage channel and preventing the occurrence of clogging of the drain due to the sedimentation of foreign substances.

According to an embodiment of the present invention, by controlling the flow rate and flow rate of the infiltrated water flowing along the drain channel during the filtering process of foreign substances in the infiltrated water through a filter mounted on the central drain hole, the water pressure acting on the drain channel formed inside the wall surface of the vertical hole is reduced. , it has the effect of more effectively blocking the inflow of infiltration water into the inner wall of the vertical sphere.

According to an embodiment of the present invention, through the filter removal and filter cover opening/closing structure mounted on the central drain port, foreign substances accumulated inside the central drain hole can be removed through the inspection hole when the filter is removed, making it easier to maintain the drain. has the effect of

According to an embodiment of the present invention, foreign substances in infiltrated water discharged along a drainage facility or a sewage treatment facility are filtered through a water collection filter mounted in a water collection box of a drainage facility to prevent clogging of a drainage facility or sewage treatment facility due to sedimentation of foreign matter has the effect of

According to an embodiment of the present invention, by controlling the flow rate and flow rate of infiltrated water flowing through a drainage facility or sewage treatment facility in the process of filtering foreign substances in the infiltrated water through a water collecting filter mounted in the water collecting box, it acts on a drainage facility or a sewage treatment facility By reducing the water pressure, there is an effect that can prevent the occurrence of backflow of seepage water in drainage facilities or sewage treatment facilities.

According to an embodiment of the present invention, there is an effect of blocking the infiltration of water discharged along the drainage channel formed in the wall surface of the vertical sphere through the water stop material formed on the connection surface between the blocks from flowing into the inner wall of the vertical sphere.

According to an embodiment of the present invention, it is possible to prevent foreign substances from entering the central drain hole of the uppermost segment through the central drain hole formed in the uppermost segment or the drain cap mounted on the upper central drain hole, thereby preventing the occurrence of clogging of the vertical drain. there is.

1 is a view showing a planar structure of a general vertical sphere.
FIG. 2 is a view showing a cross-sectional structure of a vertical sphere taken along line AA′ of FIG. 1 .
3 is a diagram illustrating a ring-shaped segment shape formed by connecting a plurality of blocks forming an arcuate shape in a lateral direction.
4 is a view showing the positions and shapes of horizontal and vertical drain grooves and a central drain hole formed in a block according to an embodiment of the present invention.
5 is a view showing a cross-sectional shape of horizontal and vertical drainage grooves formed in a block according to an embodiment of the present invention.
6 is a view showing the arrangement relationship of vertical drainage grooves between blocks stacked vertically connected to each other according to the positions of vertical drainage grooves formed in blocks according to an embodiment of the present invention.
7 is a view showing a connection structure between the lowermost segment and the shoe according to an embodiment of the present invention.
8 is a view showing the internal structure of the inspection unit in a state in which the filter is mounted on the connection part of the upper and lower central drainage sections of the block in which the inspection port is formed according to an embodiment of the present invention.
9 is a view showing the internal structure of the inspection unit in a state in which the filter is mounted on the connection part of the upper and lower central drain section of the block in which the upper and lower central drain pipes are embedded according to an embodiment of the present invention.
10 is a view showing the closing structure of the central upper central drain hole of the uppermost segment of the inspection hole through the drain cap according to an embodiment of the present invention.
11 is a diagram illustrating a structure of a connection surface between blocks in which a water stop material is installed according to an embodiment of the present invention.
12 is a diagram illustrating a connection structure between a water collection box, a water collection filter, and a floor drain pipe of a drainage facility according to an embodiment of the present invention.
13 is a view showing the shape of a drainage channel integrally formed inside a wall surface of a vertical sphere by connecting horizontal and vertical drainage grooves and a central drainage section according to an embodiment of the present invention.
14 is a view showing a drainage construction sequence using a drainage structure of a precast segment vertical sphere according to an embodiment of the present invention.

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

It will be described in detail focusing on the parts necessary to understand the operation and operation according to the present invention.

While describing the embodiments of the present invention, descriptions of technical contents that are well known in the technical field to which the present invention pertains and are not directly related to the present invention will be omitted.

This is to more clearly convey the gist of the present invention without obscuring the gist of the present invention by omitting unnecessary description.

In addition, in describing the components of the present invention, different reference numerals may be given to components of the same name according to the drawings, and the same reference numerals may be given even though they are different drawings.

However, even in such a case, it does not mean that the corresponding components have different functions depending on the embodiment or that they have the same function in different embodiments, and the function of each component depends on the corresponding embodiment. It should be judged based on the description of each component in

In addition, the technical terms used in this specification should be interpreted as meanings generally understood by those of ordinary skill in the art to which the present invention belongs, unless otherwise defined in this specification, and excessively inclusive It should not be construed as meaning or in an excessively reduced meaning.

Also, the singular expression used herein includes the plural expression unless the context dictates otherwise.

In the present application, terms such as "consisting of" or "comprising" should not be construed as necessarily including all of the various components or various steps described in the specification, some of which components or some steps are It should be construed that it may not include, or may further include additional components or steps.

The drainage structure of the precast segment 10 according to the embodiment of the present invention is a vertical sphere (1) by stacking a plurality of segments 10 having a drainage structure formed on the ground excavation surface excavated vertically downward from the ground in the vertical direction. During construction, a drainage channel is formed inside the wall surface of the constructed vertical hole 1, and rainwater or groundwater flowing in from the excavated ground is discharged along the drainage channel formed by the drainage structure of the segment 10, ) It is a structure to prevent seepage water from leaking inside.

Each segment 10 is to form a ring-shaped segment 10 by connecting a plurality of precast arch-shaped blocks 100 in the lateral direction as shown in FIG. 3 , and the formed segment 10 ) is laminated in a plurality of layers as much as the height of the vertical sphere (1) to be constructed to form the wall surface of the vertical sphere (1).

When the segment 10 is laminated in a plurality of layers to construct the vertical sphere 1, the block 100 of the segment 10 to be stacked on top is a block of the segment 10 in which the side end is connected to the bottom (100) Located in the central part, the side ends of each block 100 of the segments 10 that are connected and stacked up and down are arranged to form a zigzag shape with each other.

In the present invention, in order to clearly explain the drainage structure formed in the segment 10, one end of each block 100 constituting one segment 10 and the other end direction are the basis. The positional relationship is described, and one end and the other end of each block 100 are defined as the counterclockwise end of the arch formed by the block 100 and the clockwise end of the arch formed by the block 100 , respectively.

As shown in FIG. 4 , a concave recessed in the height direction of the block 100 in either one of the upper surface or the lower surface of each block 100 constituting the segment 10 , or in the center of both upper and lower surfaces of the block 100 . A horizontal drain groove 110 may be formed to form a groove, and the horizontal drain groove 110 extends to both ends in the lateral direction of the block 100 along the circumferential direction of the segment 10 .

And in the central portion of both lateral ends of each block 100 , vertical drainage grooves 120 are formed to form a concave groove recessed in the width direction of the block 100 , and the vertical drainage grooves 120 are the segments of the segment 10 . While extending to both ends of the upper and lower surfaces of the block 100 along the height direction and connecting to the horizontal drainage groove 110, a plurality of blocks 100 are connected in the lateral direction to form the segment 10, the horizontal level of each block 100 The drain groove 110 and the vertical drain groove 120 are connected to each other.

As shown in FIG. 5 , the cross-sectional shapes of the horizontal drainage grooves 110 and the vertical drainage grooves 120 of each block 100 may be formed in any one shape selected from among polygonal, semi-circular, and semi-elliptical shapes.

In addition, one central drain hole 131 is formed at a point spaced at equal intervals along the arch circumferential direction from one end and the other end of each block 100 , and one block 100 has a total of two central drain holes 131 . ) is formed, and each central drain hole 131 penetrates the upper and lower surfaces of each block 100 along the height direction of the vertical sphere 1, either on one side of the upper and lower surfaces of the block 100, or of the block 100 . While connecting to the horizontal drainage grooves 110 formed on both sides of the upper and lower surfaces, a drainage channel is formed inside each block 100 .

Therefore, the drainage structure of the precast segment 10 prevents the drainage channel formed during the construction of the vertical hole 1 from being exposed to the outside of the wall surface of the vertical hole 1, so that foreign substances such as soil separated from the excavated ground surface block the drainage passage. As the drainage performance of the vertical sphere (1) constructed in accordance with this is reduced or lost, the seepage water is prevented from leaking into the vertical sphere (1).

The vertical sphere 1 to which the drainage structure of the precast segment 10 according to an embodiment of the present invention is applied is constructed by stacking a plurality of segments 10 having the drainage structure formed in the top and bottom, and by stacking the segments 10 When the wall surface of the vertical sphere 1 is formed, a drainage channel communicating in the horizontal and vertical directions is formed on the connection surface between the blocks 100 connected to each other in the lateral direction or the vertical direction.

The horizontal and vertical drains formed by the horizontal drain grooves 110 and the vertical drain grooves 120 of each block 100 are located inside the wall surface of the vertical hole 1, so that foreign substances penetrate into the drain from the outside. to prevent

When the vertical sphere (1) is constructed, the side end of the block 100 of the segment 10 to be stacked on the top is placed in the center of the block 100 of the segment 10 that is arranged by connecting the upper or lower part, and is connected and stacked up and down The side ends of each block 100 of the segment 10 are arranged to form a zigzag shape with each other.

At this time, as shown in FIG. 6 , the central drain hole 131 formed in one end direction of the upper block 100 is connected to the central drain hole 131 formed in the other end direction of the lower block 100, and the upper The central drain hole 131 formed in the direction of the other end of the side block 100 may be connected to the central drain hole 131 formed in the direction of one end of the lower block 100 .

Through this, as each central drain hole 131 of the block 100 that is vertically connected and stacked is connected in a vertical direction in a straight direction, the change in the discharge direction of the seepage water discharged along the central drain hole 131 does not occur, so that the infiltration water to allow for smoother discharge of

In addition, as shown in FIG. 8 , among the plurality of segments 10 constituting the vertical sphere 1 , the block 100 constituting one or more partial segments 10 has a concave groove in the vertical direction of the inner wall surface of the vertical sphere 1 . A shape of the inspection hole 160 may be formed, and the inspection hole 160 is formed one at a point spaced apart from each other by the same distance from the end of one side and the end of the other side of each block 100 .

The inspection opening 160 is formed in each block 100 constituting the same segment 10, and the segment 10 in which the inspection opening 160 is formed is a plurality of segment 10 layers of the constructed vertical sphere 1, One or more layers may be formed, and when the segment 10 in which the inspection hole 160 is formed is formed in a plurality of layers, each segment 10 in which the inspection hole 160 is formed is constant along the height direction of the vertical sphere 1 . It is preferable that they are arranged to be spaced apart.

The central drain 131 of each block 100 in which the inspection port 160 is formed is divided up and down to form an upper central drain 141 and a lower central drain 151, respectively, and an upper central drain 141 and a lower central drain ( 151) is exposed toward the inner wall of the vertical port 1 through the inspection hole 160, and the filter 161 can be detachably mounted on the connection between the upper central drain 141 and the lower central drain 151. there is.

As shown in FIG. 10 , a filter cover 162 having a structure that is detachable or openable is mounted on the inspection port 160 , and as foreign substances in the air inside the vertical opening 1 are introduced through the inspection port 160 , the filter 161 . It is possible to lower the rate of contamination, and thus, by increasing the cleaning or replacement cycle of the filter 161, the maintenance of the vertical sphere 1 is easier.

The filter 161 filters foreign substances contained in the permeated water when the permeated water moves along the drain formed by the horizontal drain 110, the vertical drain 120, and the central drain 131, When the drain groove 120 or the central drain hole 131 is blocked by foreign substances, a reverse flow of the seepage water occurs, or as it flows into the inner wall of the vertical hole 1, it prevents leakage of the coupling surface between the blocks 100.

In addition, the block disposed under the vertical port (1) by lowering the water pressure acting on the drainage channel under the vertical port (1) by acting as a resistor that lowers the flow rate of the infiltrated water moving along the drainage channel and controlling the discharge flow rate of the infiltrated water. (100) has a function of reducing the possibility of leakage between the coupling surface.

In addition, when the filter 161 is separated for cleaning or replacement of the filter 161, it is possible to easily remove foreign substances accumulated inside the central drain hole 131 through the inspection hole 160, and in particular, each block stacked up and down ( Due to the structural characteristics of the central drain 131 of 100) being connected to form a straight line, foreign substances accumulated in the central drain 131 of the segment 10 in which the inspection hole 160 is formed as well as the other segments 10 connected up and down are collected together. By allowing it to be removed, maintenance of the drain can be made easier.

As shown in FIG. 9 , the upper central drain 141 is a drain formed inside the upper central drain 140 having a pipe shape, and the lower central drain 151 is formed in the lower central drain 150 having a pipe shape. It may be configured as a drainage channel, and the upper central drain pipe 140 and the lower central drain pipe 150 may be formed in a state embedded in the block 100 during the production and manufacturing process of the block 100 through precast.

When the segments 10 are stacked to construct the vertical hole 1, the horizontal drain groove 110, the vertical drain groove 120, and the central drain hole 131 formed on the connecting surface between the blocks 100 and the segments 10 that are connected to each other. ) are connected to each other to form a drainage channel that is connected horizontally and vertically over the entire inside of the wall of the vertical port (1), and discharge the infiltrated water flowing into the wall of the vertical port (1) to the drainage facility (200). (1) It can prevent leakage.

Through the integration of the vertical sphere (1) and the ground, the structural stability of the vertical sphere (1) is increased, the ground bearing capacity according to the consolidation of the excavated ground is increased, and the permeability of rainwater or groundwater in the vertical sphere (1) is improved. In order to reduce it, a grout (2) layer is formed by injecting a filler such as cement between the outer wall of the constructed vertical sphere (1) and the excavation surface of the ground.

Accordingly, the drainage function of the vertical hole (1) decreases as the soil separated from the excavation surface or the filler material injected when the grout (2) layer is formed blocks the drainage channel of the vertical hole (1), or the drainage function is completely blocked can lose

Therefore, in the vertical sphere to which the drainage structure and drainage structure of the precast segment according to the embodiment of the present invention are applied, the vertical sphere 1 formed by the horizontal drainage groove 110 , the vertical drainage groove 120 , and the central drainage hole 131 . of the vertical hole (1) is formed inside the wall, and the filler material injected when the soil or grout (2) layer separated from the ground excavation surface is formed blocks the drain of the vertical hole (1). To prevent deterioration or loss of drainage function.

In addition, a drainage facility 200 may be installed to be connected to the vertical drain groove 120 and the central drain hole 131 of the segment 10 stacked at the bottom of the vertical hole 1 .

As shown in FIG. 12 , the drainage system 200 includes a collection box 210 mounted in the vertical drainage groove 120 and the central drainage hole 131 of the lowermost segment 10 , and a collection box through the collection pipe 230 . It consists of a floor drain pipe 220 connected to the 210 and a water collecting filter 211 mounted inside the water collecting box 210 .

The permeated water introduced through the coupling surface between the blocks 100 of the vertical port 1 moves downward through the horizontal drain groove 110 and the vertical drain groove 120 and the central drain hole 131, When discharged from the vertical drain groove 120 or the central drain hole 131, after being collected by the water collection box 210, foreign substances contained in the infiltrated water are filtered through the water collection filter 211, and the filtered infiltrated water is collected It is discharged and stored in the floor drain pipe 220 through the water pipe 230 , and then is discharged to a sewage treatment facility connected to the floor drain pipe 220 by the operation of a pump installed in the floor drain pipe 220 .

The water collection filter 211 acts as a resistor to lower the flow rate of the infiltrated water discharged to the sewage treatment facility and controls the discharge flow rate of the infiltrated water, thereby preventing a rapid increase in water pressure acting on the drainage facility 200, 200) or the vertical port 1, and the connection between the drainage system 200 and the drainage system 200, reduce the possibility of leakage or seepage water backflow in the drainage system 200 or sewage treatment facility.

In addition, the water collection filter 211 prevents foreign substances contained in the permeated water from accumulating in the drainage channel, so that the cross-sectional area of the drainage passage decreases due to the accumulated foreign matter, resulting in a decrease in the drainage speed, or an increase in the pressure in the drainage passage as the drainage passage is completely blocked. Thus, the permeated water is prevented from leaking into the wall surface of the vertical port (1).

In this case, the water collection filter 211 is configured to be detachable, and when the drainage speed decreases due to an increase in the accumulated amount of foreign substances, the water collection filter 211 is separated from the water collection box 210 to be cleaned or replaced, thereby making it easier to manage the water collection filter 211 .

A drain cap 142 may be mounted to the central drain hole 131 or the upper central drain hole 141 formed on the upper surface of the uppermost segment 10 of the vertical hole 1 .

The drain cap 142 closes the central drain hole 131 or the upper central drain hole 141 of the upper surface of the uppermost segment 10 of the vertical hole 1, so that foreign substances such as soil in the stratum can enter the drain of the vertical hole 1 It is desirable to prevent inflow into the interior and to be made of a material with excellent mechanical properties and corrosion resistance, such as FRP (Fiber Reinforced Plastic).

As shown in FIG. 11, the water stop material 170 may be inserted or applied to the contact surface of the connection part between each block 100 constituting the vertical sphere 1, and the water stop material 170 is made of a water-expandable elastic material, By sealing the connection between blocks 100 while expanding when in contact with permeated water, the vertical port (1) of permeated water through the horizontal drain groove 110 or the vertical drain groove 120 while moving downward in the drain (1) It prevents leakage as it flows out to the inner wall.

The water stop material 170 is formed in a band shape spaced apart from the horizontal drain groove 110 or the vertical drain groove 120 at a predetermined interval along the circumferential direction of the segment 10, and the horizontal drain groove 110 and the vertical drain groove 120 ) may be disposed on either side of the vertical sphere (1) in the inner wall direction or the outer wall direction, or on both sides of the vertical sphere (1) on the inside and outside wall surfaces, and the water stop material 170 is disposed in the horizontal drain groove 110 and vertical When it is disposed on only one side of the drain groove 120, it should be disposed in the direction of the inner wall surface of the vertical sphere (1) in order to prevent leakage of water from the inner wall surface of the vertical sphere (1).

A method of forming the drainage structure of the precast segment 10 and the drainage construction method of the vertical sphere 1 using the drainage structure of the precast segment 10 according to an embodiment of the present invention configured as above will be described as follows.

As shown in FIG. 14 , the method for forming the drainage structure of the precast segment 10 according to the present invention includes the block 100 manufacturing process and the segment 10 forming the segment 10 by connecting the manufactured block 100 . ) forming process, and the vertical sphere (1) drainage construction method using the drainage structure of the segment 10 is the lowest segment combining step (S10), segment stacking step (S20), shoe separation step (S30), drainage facility construction Step S40 is performed.

In the block 100 manufacturing process, after injecting the casting material into the mold for manufacturing the block 100, curing the casting material to manufacture the arch-shaped precast block 100 .

In the mold for manufacturing the block 100, there is a protrusion in the height direction of the block 100 along the circumferential direction of the arch from the center of the arch surface of the block 100 on either or both of the upper surface or the lower surface of the block 100. It protrudes to a predetermined height, and at one end of the transverse direction and the center of the other end inside the mold for manufacturing the block 100, protrusions protrude at a predetermined height in the inner direction of the mold.

In addition, in the mold for manufacturing the block 100 , a rod or pipe-shaped member is fixed to each point spaced at equal intervals from one end and the other end of the mold in the circumferential direction of the arch in the mold height direction.

In the process of manufacturing the block 100 while the casting material injected into the mold for manufacturing the block 100 is cured, vertical and horizontal concave grooves of a shape complementary to the protrusion formed inside the mold are horizontally drained from the horizontal drainage groove 110 and vertical drainage. A groove 120 is formed, and a central drain hole 131 having the same shape as the external shape of a rod or pipe-shaped member is formed, and the horizontal drain groove 110 of each block 100 includes a vertical drain groove 120 and a center It is connected to the end of the drain hole (131).

In the process of forming the segment 10 , the blocks 100 manufactured by the block 100 manufacturing process are laterally connected to form a segment 10 of one layer, and horizontal drainage formed in each block 100 . As the grooves 110 are connected to each other, a circumferential drainage channel is formed on one or both of the upper surface or the lower surface of the segment 10. By connecting the vertical drainage channel and the drainage channel penetrating the inside of each block 100 in the vertical direction, a drainage channel communicating horizontally and vertically on the connection surface between the blocks 100 constituting the segment 10 is formed.

At this time, the central drain hole 131 formed in the process of manufacturing the block 100 may be formed in the form of a column-shaped hole penetrating the block 100 or may be formed in the form of an intubation embedded in the block 100 , the central drain hole When the block 131 is configured as an intubation type buried inside the block 100, instead of fixing a rod or pipe-shaped member inside the block 100 mold, a central drain pipe 130 having a central drain hole 131 is formed. After being inserted into the mold, the process of forming the central drain hole 131 in the form of an intubation can be added by injecting and curing the casting material.

In the lowermost segment combining step (S10), as shown in FIG. 7, a ring-shaped shoe is placed on the ground surface of the vertical sphere 1, and a plurality of blocks 100 are laterally connected to the upper part of the shoe. The formed ring-shaped lowermost segment 10 is coupled and fixed.

The shoe is a segment (10) for preventing the lowermost segment (10) from being damaged by collision or contact with the excavation surface during downward movement of the high load segment (10) stack during the construction process of the vertical sphere (1). As a protection device, in order to prevent deformation or damage caused by a load of the segment 10 stack, it is preferable to make it of a high-strength material such as steel.

When the coupling between the shoe and the lower segment 10 is completed, the bottom surface of the lower end of the shoe is excavated to move the shoe and the lowermost segment 10 downward along the excavation direction by the weight of the shoe and the lowermost segment 10. Downward movement following excavation of the bottom surface is performed until it reaches a height at which a new layer of segment 10 can be stacked on the top surface of the segment 10 .

In the segment stacking step (S20), the segment 10 is additionally stacked on the upper surface of the uppermost segment 10 stacked on the shoe or segment 10, and the bottom surface of the shoe bottom is excavated to lower the segment 10 stacked structure. The moving process is repeated until the stack of segments 10 reaches the height of the vertical sphere 1 .

As shown in FIG. 13 , the vertical drain groove 120 and the central drain hole 131 of each segment 10 are connected to the upper or lower side by the segment 10 stacking, and the horizontal drain groove of the other segments 10 stacked. (110) and the vertical drain groove (120) and connected to each other, the vertical sphere (1) over the entire inside of the wall surface is formed a drainage channel connected in the horizontal and vertical directions.

At this time, in order to increase the structural stability of the vertical sphere 1, the side end of the block 100 of the segment 10 that is connected to the upper part is connected to the lower part and is stacked so that it is located in the center of the block 100 of the laminated segment. , since the central drain hole 131 of each block 100 is formed at a point spaced apart from one side and the other end of the block 100 at the same distance, each central drain hole 131 formed inside the segment 10 stack is formed in the vertical direction. connected in a straight line.

Through this, the infiltrated water discharged along a specific central drain hole 131 moves to the horizontal drain groove 110 and the vertical drain groove 120 or the central drain hole 131 of another line, and the infiltration water discharge direction is converted into a horizontal or vertical direction. This does not occur, and the specific central drain 131 and the central drain 131 are connected and discharged in a straight direction along the vertical downward direction along the formed central drain 131 line, thereby penetrating through the central drain 131 The discharge of water can be made more smoothly.

In addition, in some blocks 100 of the blocks 100 manufactured in the block 100 manufacturing process, a concave groove-shaped inspection tool is located at the same distance from one end and the other end of the inner surface of the arch formed by the block 100 . 160 is formed, and each central drain 131 is divided up and down to form two flow paths, an upper central drain 141 and a lower central drain 151, and an upper central drain 141 and a lower central drain ( 151) may be configured to be exposed in the direction of the inner arch surface of the block 100 through the inspection hole 160.

When the process of manufacturing the block 100A in which the connection parts of the upper and lower central drain holes 141 and 151 are exposed through the inspection hole 160 is added to the block 100 manufacturing process, in the segment stacking step (S20), the upper central drain hole ( 141), the process of configuring the segment 10A of one or more layers only with the block 100A in which the lower central drain hole 151 and the inspection hole 160 are formed may be added.

A detachable filter 161 is mounted on the connection part between the upper central drain port 141 and the lower central drain port 151, and the filter 161 filters foreign substances of the infiltrated water flowing into the internal drain of the vertical port (1) wall, It has a function of reducing the water pressure acting on the drainage channel and reducing the possibility of leakage.

Therefore, when two or more layers of the segment 10A composed of the block 100A in which the upper and lower central drain holes 141 and 151 and the inspection hole 160 are formed are formed, one or more layers of the general segment 10 are formed between each segment 10A. By stacking the segments 10A consisting of the blocks 100A in which the upper and lower central drain holes 141 and 151 and the inspection ports 160 are formed are spaced apart by a predetermined interval, the filter 161 is positioned in the height direction of the vertical hole 1 It is preferable to configure it so that it can be appropriately dispersed and arranged accordingly.

In addition, in the case of manufacturing the block 100 by configuring the upper and lower central drain holes 141 and 151 in an intubation form during the block 100 manufacturing process, the upper central drain hole 141 is formed when the casting material is injected into the block 100 mold. By inserting the formed upper central drain pipe 140 and the lower central drain pipe 150 formed with the lower central drain hole 151 into the mold, the upper central drain pipe 140 and the lower central drain pipe 150 are inside the manufactured block 100. A process of embedding may be added.

When the segment 10 stacking and downward movement are completed and the vertical sphere 1 wall surface formation is completed, a shoe separation step (S30) of separating and recovering the shoe from the lowest segment 10 is performed, and the vertical sphere 1 construction is performed. Depending on the method, the shoe separation step ( S30 ) may be omitted so that the shoe separation and recovery may not be performed.

In the drainage facility construction step (S40), the drainage facility 200 of the vertical port 1 is installed under the lowest segment 10, and the vertical drainage groove 120 and the central drainage port 131 of the lowest segment 10 are drained. When connecting to the facility 200, and when the shoe separation step (S30) is omitted, a drainage channel connected to the vertical drain groove 120 and the central drain hole 131 of the lowest segment 10 is formed inside the shoe, and the shoe It may be substituted for the process of connecting the drainage channel formed in the dam to the drainage facility 200 .

The drainage system 200 is a vertical drainage groove 120 formed on the lower surface of the lowermost segment 10, a water collecting box 210 mounted on the central drain 131, and a floor drain pipe for storing infiltrated water and discharging it to a sewage treatment facility (220) and the water collecting box 210 and the water collecting pipe 230 connecting the floor drain pipe 220 to each other, after separating and recovering the shoe in the shoe separation step (S30), the lowermost segment 10 lower A process of installing the water collecting box 210 and the floor drain pipe 220 in the sump and connecting the water collecting box 210 and the floor drain pipe 220 to the water collecting pipe 230 may be added.

In addition, when the water stop material 170 is inserted or applied to the connection surface between each block 100 of the vertical sphere 1, after curing of each block 100 is completed in the block 100 manufacturing process, the segment 10 During the forming process or the segment lamination step (S20), the process of inserting or applying the water stop material 170 to the connection surface between the blocks 100 may be added, and during the segment lamination step (S20), it is connected vertically or horizontally to By additionally adding the process of fixing the connected block 100 with a fastener, it is possible to further improve the leak prevention performance of the connection part between the blocks 100 and at the same time increase the structural stability of the vertical sphere 1 .

And after completing the formation of the wall surface of the vertical port 1 according to the segment lamination step (S20), the drain cap 142 is placed in the central drain hole 131 or the upper central drain hole 141 that is opened to the upper surface of the uppermost segment 10. By mounting, a process of closing the central drain hole 131 or the upper central drain hole 141 connected to the upper surface of the uppermost segment 10 may be added.

Although embodiments of the present invention have been described with reference to the above, those skilled in the art to which the present invention pertains will understand that the present invention may be embodied in other specific forms without changing the technical spirit or essential characteristics thereof.

Therefore, the embodiments described above are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention described in the above detailed description is indicated by the following claims, meaning and All changes or modifications derived from the scope and its equivalents should be construed as being included in the scope of the present invention.

1: vertical hole 2: grout
10: segment 100: block
110: horizontal drain groove 120: vertical drain groove
130: central drain pipe 131: central drain
140: upper central drain pipe 141: upper central drain port
142: drain cap 150: lower central drain pipe
151: lower central drain port 160: access port
161: filter 162: filter cover
170: index material 200: drainage facility
210: water collecting box 211: water collecting filter
220: floor drain pipe 230: water collection pipe

Claims (12)

Inserting a ring-shaped segment 10 formed by connecting a plurality of precast arch-shaped blocks 100 in the lateral direction to the excavation surface of the vertical sphere 1, and the segment 10 stacked on top of the By repeating the lamination of the segment 10 and the excavation of the ground so that the block 100 side end is located in the central part of the block 100 of the segment 10 that is disposed adjacent to the lower portion, the segment 10 is moved downward to move the vertical sphere (1) to form the wall surface,
The segment 10 is formed to form a concave groove recessed in the height direction of the block 100 on either one or both central portions of the upper surface or the lower surface of each block 100 constituting the segment 10 in the circumferential direction of the segment 10 . Horizontal drainage grooves 110 extending to both ends in the lateral direction along the block 100;
It is formed at a point spaced at equal intervals along the arc circumferential direction from one end and the other end of each block 100 constituting the segment 10, and blocks inside the block 100 along the height direction of the vertical sphere 1 A central drain hole 131 formed as a through hole passing through the upper and lower surfaces of the 100 and connected to the horizontal drain groove 110;
consists of,
When the block 100 is laterally connected to form the segment 10, the horizontal drain groove 110 and the central drain hole 131 of each block 100 are connected to each other to form a horizontal and vertical drainage channel inside the segment 10. The number of precast segments with drainage structure applied, characterized in that the central drainage holes 131 between the segments 10 that are connected up and down when the vertical sphere 1 is formed by stacking the segments 10 are connected in a straight line direct ball. According to claim 1,
It is formed to form a concave groove recessed in the width direction of the block 100 in the central portion of both ends of the block 100 in the lateral direction of each block 100 constituting the segment 10, and the block 100 along the height direction of the segment 10 A vertical drain groove 120 extending to both ends of the upper and lower surfaces and extending to the horizontal drain groove 110 is added,
A plurality of segments 10 are stacked to form a vertical sphere wall surface, but a central drain hole 131 formed in the direction at one end of the block of a specific segment 10 is stacked in the upper or lower part of the block 10 of the segment 10 It is connected in a straight line with the central drain hole 131 formed in the direction of the other end of As the horizontal drainage groove 110 and the vertical drainage groove 120 are connected to each other, a drainage passage connected in the horizontal and vertical directions is formed over the entire inside of the wall surface of the vertical sphere 1, so that the vertical drainage groove of the lowermost segment 10 ( 120) and the central drain hole 131 is a vertical hole to which the drainage structure of the precast segment is applied, characterized in that it is connected to the drainage facility 200 of the vertical hole 131. 3. The method of claim 2,
The central drain 131 of each block 100 constituting one or more layers of the same segment 10 is divided up and down into an upper central drain 141 and a lower central drain 151, and the The connection part between the upper central drain hole 141 and the lower central drain hole 151 is exposed in the direction of the inner wall surface of the vertical hole 1 through the concave groove-shaped inspection hole 160 formed along the inner surface, and the upper central drain hole 141 and A detachable filter 161 is mounted on the connection part between the lower central drain holes 151 to filter foreign substances in the seepage water and to reduce the water pressure acting on the drain channel formed inside the wall surface of the vertical hole (1) Precast segment, characterized in that A vertical sphere with a drainage structure of 4. The method of claim 3,
The upper central drain 141 and the lower central drain 151 are respectively formed in the upper central drain 140 and the lower central drain 150 in the shape of a pipe, and the upper central drain 140 and the lower central drain 150 ) is a vertical sphere to which the drainage structure of the precast segment is applied, characterized in that it is formed by being buried inside the block 100 when the precast block 100 is manufactured. 3. The method of claim 2,
The drainage facility 200 is
a water collecting box 210 mounted on the vertical drain groove 120 and the central drain hole 131 of the lowermost segment 10 to collect seepage water discharged through the vertical drain groove 120 and the central drain hole 131;
a floor drain pipe 220 for storing seepage water and discharging it to a sewage treatment facility;
a water collecting pipe 230 for discharging the permeated water collected in the water collecting box 210 to the floor draining pipe 220 ;
a water collecting filter 211 mounted inside the water collecting box 210 to filter foreign substances in the permeated water, to reduce the water pressure acting on the water collecting pipe 230 , and to be detachable from the water collecting box 210 ;
A vertical sphere to which the drainage structure of the precast segment is applied, characterized in that consisting of. 3. The method of claim 2,
A drain cap 142 is mounted on the upper portion of the central drain 131 formed in the uppermost segment 10 to close the upper end of the central drain 131, and at least a horizontal drain groove 110 on the contact surface of the connection between each block 100. and a band-shaped index spaced apart from the horizontal drain groove 110 or the vertical drain groove 120 at a predetermined interval in the circumferential direction of the segment 10 so as to include the inner wall direction of the vertical sphere 1 based on the vertical drain groove 120 . A vertical sphere to which the drainage structure of the precast segment is applied, characterized in that the ash 170 is formed. Inserting a ring-shaped segment 10 formed by connecting a plurality of precast arch-shaped blocks 100 in the lateral direction to the excavation surface of the vertical sphere 1, and the segment 10 stacked on top of the By repeating the lamination of the segment 10 and the excavation of the ground so that the block 100 side end is located in the central part of the block 100 of the segment 10 that is disposed adjacent to the lower portion, the segment 10 is moved downward to move the vertical sphere (1) to form the wall surface,
An arch-shaped precast block 100 is manufactured by injecting a casting material into the block 100 manufacturing mold and then curing, and each manufactured block 100 has either the upper surface or the lower surface of the block 100 or Horizontal drainage grooves 110, which form a concave groove recessed in the height direction of the block 100 in both central portions and extend to both ends in the lateral direction of the segment 10 along the circumferential direction of the segment 10, of the block 100 It forms a concave groove recessed in the width direction of the block 100 at the center of both ends in the lateral direction, and extends to both ends of the upper and lower surfaces of the block 100 along the height direction of the segment 10 to connect with the horizontal drain groove 110 Vertical drainage groove 120, formed at the same distance from one end and the other end of each block 100 along the arch circumferential direction, the upper and lower surfaces of the block 100 along the height direction of the vertical sphere (1) The process of manufacturing the block 100 to form a central drain hole 131 that penetrates through the horizontal drain groove 110 and the continuous central drain hole 131, and a plurality of the manufactured blocks 100 are laterally connected to each other. The horizontal drainage groove 110 and the vertical drainage groove 120 are connected to each other to form a segment 10 in which horizontal and vertical drainage channels are formed. Precast segment vertical sphere construction method, characterized in that the central drain hole 131 is formed so that the central drain hole 131 between the segments 10 connecting up and down is connected in a straight line. 8. The method of claim 7,
The vertical sphere (1) wall surface is constructed by stacking the segment 10 on which the drainage structure is formed in a plurality of layers,
The lowest segment combining step ( S10);
A segment ( 10) located in the central part of the block 100, the central drain hole 131 formed in the direction of one end of the block 100 is in line with the central drain hole 131 formed in the direction of the other end of the block 100 stacked up or down The vertical drain groove 120 and the central drain hole 131 of each segment 10 are connected to the horizontal drain groove 110 and the vertical drain groove 120 of the other segments 10 that are connected to the upper or lower side and are stacked. ) and while being connected to each other, the vertical sphere (1) segment stacking step (S20) in which drainage channels connected in horizontal and vertical directions are formed over the entire inside wall surface;
Separating the shoe from the lowermost segment 10 after completing the formation of the wall surface of the vertical sphere 1 by the segment 10 stacking, and a shoe separation step (S30) that can be omitted;
Install the drainage facility 200 of the vertical port (1) in the lower part of the lowest segment (10), but the vertical drainage groove (120) and the central drainage port (131) of the lowest segment (10) are the drainage facilities ( 200), the drainage facility construction step (S40);
Precast segment vertical sphere construction method, characterized in that consisting of. 9. The method of claim 8,
The block 100 constituting the partial segment 10 is composed of an upper central drain 141 and a lower central drain 151 by dividing the central drain 131 up and down, and is formed along the inner surface of the block 100 . The connection between the upper central drain 141 and the lower central drain 151 through the concave groove-shaped inspection hole 160 is configured to be exposed in the direction of the inner wall of the vertical hole (1),
In the segment stacking step (S20), the process of stacking one or more layers of segments 10 is added only with the block 100 having the upper central drain 141, the lower central drain 151, and the inspection hole 160 formed therein,
A detachable filter 161 is mounted on the connection between the upper central drain 141 and the lower central drain 151 to filter foreign substances from the infiltrated water flowing into the wall internal drain of the completed vertical hole 1 and act on the drain. Precast segment vertical sphere construction method, characterized in that to reduce the water pressure. 10. The method of claim 9,
When the upper central drain 141 and the lower central drain 151 are formed in the block 100 constituting the segment 10, the upper central drain 141 and the lower central drain 151 are formed inside, respectively. Precast segment vertical sphere construction method, characterized in that the upper central drain pipe 140 and the lower central drain pipe 150 are buried in the block 100 and formed. 9. The method of claim 8,
The drainage facility 200 installed in the drainage facility construction step (S40) is installed in the vertical drainage groove 120 and the central drainage hole 131 of the lowermost segment 10, and a collection box 210 to collect the discharged water. , a floor drain pipe 220 for storing and discharging permeated water to a sewage treatment facility, a water collecting pipe 230 for discharging permeated water collected in the water collection box 210 to a floor drain pipe 220, mounted inside the water collecting box 210 Precast segment vertical sphere construction method, characterized in that it filters foreign substances in the permeated water, reduces the water pressure acting on the water collecting pipe (230), and consists of a water collecting filter (211) detachable from the water collecting box (210). According to any one of claims 7 or 8 selected from,
A drain cap 142 is mounted on the upper part of the central drain hole 131 formed in the block 100 of the segment 10 stacked on top of the vertical hole 1, and at least a horizontal drain groove ( 110) and the vertical drainage groove 120 as a basis for the vertical sphere (1) to include the inner wall direction from the horizontal drainage groove 110 or the vertical drainage groove 120 to the segment 10 in the circumferential direction at a certain interval to include a band shape Precast segment vertical sphere construction method, characterized in that the water stop material 170 is added.

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