KR20080084135A

KR20080084135A - Segment for rehabilitating pipe

Info

Publication number: KR20080084135A
Application number: KR1020070025415A
Authority: KR
Inventors: 박병권
Original assignee: (주)씨스이엔지
Priority date: 2007-03-15
Filing date: 2007-03-15
Publication date: 2008-09-19

Abstract

A segment for rehabilitating a pipe is provided to obtain high water tightness at a longitudinal connected portion by surface-contacting fitting projected parts and recessed parts of side plates and increasing contact areas of the plates. A segment(1) for rehabilitating a pipe has connected surfaces to be connected in a longitudinal direction and a circumferential direction of the pipe sequentially. Side plates(102,103) are installed as longitudinal connected surfaces. A projected part(102c) is formed on an outer surface of one of the side plates. A recessed part(102d) is fitted to the projection part. Additional recessed and projected parts(103c,103d) are formed on outer surfaces of the other side plate and formed to circumferential directions sequentially. The recessed and projected parts of the side plates are fitted to each other and surface-contacted with each other in order to obtain water tightness of the pipe.

Description

Segment for Pipeline Repair Pipes {SEGMENT FOR REHABILITATING PIPE}

1 is a plan view showing the surface of the pipeline segment for repair pipes according to the present invention.

FIG. 2 is a side view seen from the C direction shown in FIG. 1. FIG.

FIG. 3 is a sectional view seen on the line A-A shown in FIG. 1; FIG.

Figure 4 is a bottom view showing the rear surface of the pipeline repair pipe segment shown in FIG.

FIG. 5 is a side view seen in the D direction shown in FIG. 1; FIG.

FIG. 6 is an enlarged view of a sectional view and a part thereof on the line B-B shown in FIG. 1; FIG.

Figure 7 is a cross-sectional view terminated each of their connecting portions to explain a method for connecting the pipeline repair pipe segments in the circumferential direction according to the present invention.

8 is a cross-sectional view of the connection state of the segment member for the pipe repair pipe shown in FIG.

9 is a cross-sectional view of each connection part thereof broken to explain a method of longitudinally connecting segments for pipeline repair pipes according to the present invention;

10 is an enlarged view of a cross-sectional view and a portion of a connection state of the pipeline repair pipe segments shown in FIG. 9;

Figure 11 is a cross-sectional view showing a state in which a maintenance tube assembled with segments of the pipeline maintenance pipe according to the present invention installed in the existing installation pipe.

Figure 12 is a working view illustrating the appearance of assembling the repair pipe into the pipeline repair pipe segments in accordance with the present invention.

13 is an enlarged cross-sectional view showing a segment for a conventional pipeline repair pipe and a portion thereof.

14 is an enlarged sectional view showing a state in which a segment for a conventional pipeline repair pipe is longitudinally connected and a portion thereof.

Explanation of symbols on the main parts of the drawings

1: segment 2: pipe unit

3: Conservatory 4: Existing

5: manhole 6: bolt for connecting segments

7: Nut for connecting segment 9: Bolt for connecting pipe unit

10: Nut for connecting pipe unit 101: Inner plate

102, 103: side plates 102c, 103d: protrusions

102d, 103c: recess 104, 105

104d, 105e: recess 104e, 104d: protrusion

Japanese Laid-Open Patent Publication 2003-214098

The present invention relates to a segment member for a pipeline repair pipe used to assemble a pipeline repair pipe that repairs an old sewage pipe and extends its life.

In order to repair the old sewage pipe (hereinafter, referred to as an existing pipe), which is installed and worn, the water pipe 3 assembled with a smaller outer diameter in the existing pipe 4 is assembled as shown in FIG. Next, a known method for repairing an existing tube for filling and curing a filler (not shown) between the assembled repair tube 3 and the existing tube 4 to constitute a so-called composite tube is known from the documents cited above.

The water conduit 3 is assembled with segments connected in turn in the circumferential and longitudinal directions to the conduit. That is, in the manhole 5 leading to the existing pipe 4, as shown in FIG. 12, the operator S connects the arc-shaped segment in the circumferential direction of the arc (circumferential direction of the repair pipe), and thus a short ring. At the same time assembling the pipe unit (2) of the shape, while fixing the bolt (9) to each segment (1), the tube unit (2) in the existing pipe with the bolt (9) and nuts not shown The water supply pipe 3 is assembled by connecting in the longitudinal direction one by one.

FIG. 13: shows sectional drawing cut | disconnected in the width direction (the longitudinal direction of a repair pipe) of the conventional segment 1. As shown in FIG. In this figure, the side plates 202 and 203 are provided on both sides in the width direction of the inner surface plate 201 in which the lower surface is the inner circumferential surface of the water conduit, and the V-shaped protrusions 202a and the rectangular grooves ( 203a) is formed continuously in the circumferential direction of the maintenance tube. As shown in Fig. 14, the segments 1 are connected to each other in the longitudinal direction of the conduit by connecting the pipe units 2, and the recesses formed in the side plates 203 of one segment 1 are then connected. A sealing material (not shown) is applied in the 203a, and the protrusion 202a formed in the side plate 202 of the next segment 1 is fitted into the recess 203a, so that the outer surfaces of the side plates 202 and 203 are connected to each other. Are connected in close contact with each other. With such a structure, watertightness is obtained at the connection part in the longitudinal direction, and watertightness is also obtained with the same structure at the circumferential connection part.

However, in the structure of the conventional segment 1 as described above, the apex portion of the V-shaped protrusion 202a is formed in the state where the protrusions 202a are inserted in the recess 203a and the segments 1 are connected to each other as described above. There is a problem that only a line contact with the flat surface inside the recess 203a has a small contact area with each other, and a gap is formed in the connecting portion, so that watertightness cannot be sufficiently secured.

In order to solve this problem, it is an object of the present invention to provide a structure capable of improving the watertightness at the connecting portion of segments in a pipeline repair pipe segment.

Pipe line maintenance pipe segment according to the present invention to achieve the above object, the connection surface for connecting in order in the longitudinal direction and the circumferential direction of the water supply pipe, in this connection surface to one connection surface in the longitudinal direction of the connection surface in each direction Convex projections formed convexly, concave grooves formed concave at the connecting surface thereof, and concave grooves and projections formed to fit into the projections and concave grooves formed on one side of the connecting surface on the opposite side of the longitudinal direction, respectively. And projections and recesses formed on the connecting surfaces in the longitudinal direction are continuously formed in the circumferential direction, and when connected in the longitudinal direction, the protrusions and recesses formed on one connecting surface of one segment are next. Grooves and protrusions formed on the opposite connecting surface of the segment are tightly fitted to be in surface contact. Characterized in that configured.

In addition, the pipeline repair pipe segment according to the present invention as described above has a projection formed convexly at this connection surface in one of the circumferential connection surfaces, a groove portion concavely formed at the connection surface in connection with the projection, and On the opposite side of the circumferential direction there is a groove and a protrusion formed in a shape that fits into each of the protrusions and the grooves of the one connection surface, respectively, the protrusions and grooves formed on each of the circumferential direction in the longitudinal direction described above. It is formed continuously, and when connected in the circumferential direction, the groove portion and the projection portion of the opposite connection surface of the next segment is in close contact with the projection portion and the groove portion of the one connecting surface of one segment, characterized in that the surface contact It is done.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings. The carried out pipe maintenance pipe segment is used to assemble a maintenance pipe for repairing an existing and installed old sewer pipe (hereinafter referred to as an existing pipe) and extending its life. As shown in Fig. 12, it is possible to assemble in an existing tube 4 to form a primarily annular tube unit 2, where each segment 1 divides the tube unit 2 in the circumferential direction, for example, into 5 parts. Corresponds to the size of. That is, in the existing pipe, one segment of the pipe unit 2 may be formed by connecting five segments 1 in the circumferential direction, and the plurality of the formed tube units 2 are sequentially connected in the longitudinal direction. It is possible to establish the conservative pipe (3).

(Example)

1 to 6, the segment 1 preferably includes an inner plate 101, side plates 102 and 103, end plates 104 and 105, and two reinforcing plates 106 and 107, each of which is transparent, It is integrally formed by injection molding of translucent or opaque plastics. As the transparent plastic, vinyl chloride, ABS, a duraster polymer such as a brand name are used, PVC, polyethylene, and the like are used as the translucent plastic, and PVC, polyester, ABS, polyethylene, polypropylene and the like are used as the opaque plastic.

The inner surface plate 101 is a plate having a constant width and formed in an arc shape having a predetermined angle, for example, about 72 ㅀ, and its lower surface (inner surface of the arc) is the inner circumferential surface of the pipe unit 2, that is, the conservative pipe. Becomes the inner circumference of. In addition, the circumferential direction of the circular arc of the inner surface board 101 becomes the circumferential direction of a repair tube, and the width direction of the inner surface plate 101 becomes the longitudinal direction of a repair tube. Rectangular openings 101a are formed at the end portions on both sides of the inner plate 101 in the circumferential direction. The opening 101a is formed to allow the bolt 6 (see Fig. 8) to be fastened with the next segment 1 to be connected adjacently in the circumferential direction from the inside. It is fixed to prevent.

The side plates 102 and 103 are formed over the entire length in the longitudinal direction along the edges on both sides of the circumferential direction of the inner plate 101, and are erected toward the outside of the arc of the inner plate 101. In each of the side plates 102 and 103, bolt through holes 102a and 103a through which bolts 9 for connecting pipe units 2 adjacent in the longitudinal direction are connected at regular intervals in the circumferential direction, as shown in FIG. In several places, for example, in this embodiment, it is formed in 14 places. Each bolt through hole is slightly larger than the head of bolt 9 or that of nut 10.

The outer face of the side plates 102, 103 is in contact with that of the other segment 1 assembled in the tube unit 2 to be adjacently connected in its longitudinal direction for the longitudinal connection of the tube unit 2 as described later. Each connection surface of a longitudinal direction becomes. Referring to Fig. 6, at the lower end of the outer surface of the side plate 102 on one side in the longitudinal direction (left in the drawing), a protrusion 102c protruding from the outer surface and a recessed portion 102d connected to it and recessed at the outer surface thereof. ) Is formed. Moreover, in the lower end part of the outer side surface of the side plate 103 of the opposite side (right side in drawing), the recessed part 103c which was concave in the outer side surface, and the protrusion part 103d which protruded from the outer side surface in connection with this are formed. These are formed successively over the entire length of the side plates 102 and 103 along the circumferential opposite side edges of the inner plate 101, respectively.

The protruding portion 102c of one side plate 102 is inclined in the upper and lower sides in the drawing along the protruding direction so that the cross section along the protruding direction is trapezoidal and the width of the distal end is gradually narrowed toward the distal end. The sides are formed in a planar shape parallel to the plate surface of the side plate (vertical in the drawing). As for the groove part 102d of this side plate 102, the upper surface in the figure is joined to the lower surface of the protrusion part 102c along the groove direction. And the cross-sectional shape along the groove direction is approximately "

", Inclined so that the inner surface in the groove direction is acute with respect to the upper surface.

The recess 103c of the opposite side plate 103 has a shape that fits snugly with the protrusion 102c of the one side plate 102, that is, a shape that can be tightly fitted in a surface contact without gaps, and the protrusion 103d. ) Is shaped to fit snugly 102d of the one side plate 102. In addition, in correspondence with the protrusions 102c and the recesses 102d of one side plate, the upper side in the figure is shown along the protruding direction of the protrusions 103d on the lower side in the figure along the groove direction 103c of the opposite side plate. The sides are connected.

The end plates 104 and 105 are formed along the circumferential opposite side edges of the inner plate 101 over the entire length in the width direction of the inner plate, respectively, and are erected toward the outer side of the arc of the inner plate 101. In the end plates 104 and 105, bolt through holes 104a and 105a for penetrating the bolts 6 (see Fig. 8) for connection with the next segment 1 to be connected in the circumferential direction are formed in several places.

Each outer surface of the end plates 104, 105 is a circumferential connecting surface which abuts each other with the next segment 1 to be connected adjacently in the circumferential direction. As shown in the cross-sectional view of FIG. 7, a groove portion 104c concave in a V-shape is formed at the outer side in the vertical direction of the outer side surface of the end plate 104, and a groove portion concave in the outer side at the lower end thereof. 104d) and the protrusion part 104e which protruded from the outer side surface are formed in the up-and-down connection. In the upper and lower center portions of the outer surface of the end plate 105 on the opposite side, protrusions 105c protruding in a V-shape from the outer side are formed, and at the lower end thereof, protrusions 105d protruding from the outer side and at the outer side thereof. The recessed recessed part 105e is formed by connecting up and down. These are formed over the entire length along the width direction (length direction) of the end plates 104,105.

The shapes of the protrusion 105d and the recess 105e of the end plate 105 correspond to the protrusion 102c and the recess 102d of the side plate 102, respectively. That is, the protrusion 105d has a trapezoidal cross-sectional shape in the protruding direction, and the upper and lower surfaces are inclined along the protruding direction so that the upper and lower widths in the drawing gradually become narrower toward the distal end side, and the distal end surface is vertical. It is formed in the shape of one (parallel to the plane) plane. In addition, the groove portion 105e is inclined so that the upper surface thereof is connected to the lower surface of the protrusion 105d in the drawing along the groove direction, and the inner surface of the groove direction is acute with respect to the upper surface in the drawing.

The recessed part 104d of the end plate 104 is fitted in the shape of the protrusion part 105d, and the protrusion part 104e fits in the recessed part 105e. Moreover, in correspondence with the protrusion part 105d and the recessed part 105e, the upper side surface is connected to the lower surface side along the protrusion direction of the protrusion part 104e along the groove direction of the recessed part 104d. Moreover, the shape of the recessed part 104c and the protrusion part 105c also correspond.

The reinforcement plates 106 and 107 are for reinforcing the mechanical strength of the entirety of the segment 1, and are directed toward the outside of the arc of the inner plate 101 from the inner side plates 102 and 103 of the surface of the inner plate 101 (outer side of the arc). Erected The reinforcing plates 106 and 107 are provided with a plurality of bolt through holes 106a and cutouts 107a for penetrating the bolts 9 (see FIG. 9) for connecting the pipe units 2 adjacent in the longitudinal direction to the side plates 102 and 103. Is formed at a position corresponding to each of the bolt through holes 102a and 103a. The size of the bolt through hole 106a is slightly larger than the diameter of the shaft portion of the bolt 9 and smaller than that of the head of the bolt 9 or the nut 10.

On the inner side of the side plates 102 and 103 and on both sides of the reinforcing plates 106 and 107 (one side of the reinforcing plate 107 is only one side), a plurality of small right-angled triangle ribs 102b and 103b extending laterally to prevent each deformation. 106b and 107b are mutually staggered between the adjacent bolt through holes 102a, 103a and 106a and the notch 107a, and the bottom is integrally formed on the inner surface plate 101 (refer to FIG. 5). .

The tubing unit 2 can be assembled by connecting the segments 1 having the above structure in the circumferential direction as shown in FIG. 12 described above, and by connecting the tubing unit 2 in the longitudinal direction one by one, the desired maintenance pipe ( 3) can be assembled. The connecting method in the circumferential direction and the longitudinal direction will be described with reference to FIGS. 7 to 10.

First, prior to connecting in the circumferential direction, the bolt 9 for connecting the tube unit 2 shown in FIG. 9 is fixed to the segment 1. Of course, this fixing may be performed after connection in the circumferential direction.

To fix the bolt 9, first, the bolt 9 is inserted into one of the segment 1 side plates 102 and 103, for example, into the bolt through hole 102a of the side plate 102, and the bolts of the reinforcing plates 106 and 107 are inserted. The through hole 106a and the notch 107a pass through the bolt through hole 103a of the side plate 103. As shown in FIG. 9, the head of the bolt 9 is attached to the side plate 102 side reinforcement plate 106. As shown in FIG. Insert it to the position where it abuts. Then, the nut 10 is fastened to the distal end side of the bolt 9 protruding outward from the side plate 103 and tightened to a position where the side plate 102 is in contact with the reinforcing plate 106, and the cylindrical positioning member 19 ), The bolt 9 is fixed by inserting the bolt 9 into the position where it is in contact with the reinforcing plate 106 toward the side plate 103. The positioning member 19 positions the bolt 9 concentrically with the bolt through hole 103a, and simultaneously positions the bolt through holes 102a and 103a between the pipe units 2 connected as described below. It is to fit.

In addition, the fixing position of the bolt 9 is set to half or less of the number of bolt through-holes 102a, and is fixed by one to several bolt through-holes. Here, the length of the bolt 9 is designed such that the length of the portion protruding from the side plate 103 is slightly shorter than the width of the segment 1 (from the outer side of the side plate 102 to the outer side of the side plate 103).

In this manner, the bolts 9 are fixed to the plurality of segments 1, and then the segments 1 are sequentially connected in the circumferential direction as shown in FIGS. 7 to 8. That is, in FIG. 7, the protrusions 105c and 105d and the recess 105e of the left segment 1 end plate 105 are respectively formed in the recesses 104c and 104d and the protrusions of the right segment 1 end plate 104, respectively. 104e), the outer surfaces of the end plates 104, 105 are brought into close contact with each other. At this time, the sealing material which is not shown in figure is previously apply | coated to the inner surface of the groove part 104c, 104d and the groove part 105e.

Next, as shown in FIG. 8, the bolt 6 is inserted into the opening 101a of the inner surface plate 101 of the right segment 1 and inserted into the bolt through holes 104a and 105a of the end plates 104 and 105, and the left segment The nut 7 is inserted from the opening 101a of (1), screwed to the bolt 6, and fastened to the end plate 105, and the segments 1 and 1 are connected in the circumferential direction. By connecting the plurality of segments 1 in the circumferential direction in this way, the tube unit 2 is assembled as shown in FIG.

Next, the connection between the pipe units 2 is performed as shown in FIGS. 9 and 10. For example, in FIG. 9, the left tube unit 2 is connected to the tube unit 2 which is already assembled as part of the conduit 3 on the right side. First, each segment 1 of the right tube unit 2 is connected. The bolt 9 protruding to the outer side of the side plate 103 is passed through the side plate 102 and the reinforcing plates 106 and 107 at the portion where the bolt 9 of the segment 1 of the left tube unit 2 is not fixed. Through the holes 102a and 106a and the notch 107a, the positioning member 19 is inserted into the bolt through hole 102a, and the segment 1 side plate 102 of the left pipe unit 2 is inserted. The outer surface of the right side pipe unit (2) to the outer surface of the segment (1) side plate (103) by pressing the projection (102c) and the groove portion (102d) of the side plate (102) as shown in FIG. The outer surfaces of the side plates 102 and 103 are brought into close contact with the 103c and the protrusion 103d. Moreover, the sealing material which is not shown in figure is previously apply | coated to the inner surface of the recessed parts 102d and 103c. Here, the distal end of the bolt 9 protruding from the segment 1 of the right tube unit 2 in FIG. 9 reaches the inner side of the segment 1 side plate 103 of the left tube unit 2, so that the bolt is penetrated. The left tube unit 2 is fixedly connected to the right tube unit 2 by screwing the nut 10 to the end of the bolt 9 in the hole 103a and fastening it to the reinforcement plate 106 adjacent to the side plate 103. To be assembled as part of the maintenance pipe 3.

According to the present embodiment as described above, in order to connect the segments 1 to each other as part of the tube unit 2 in the longitudinal direction, as shown in FIG. 10, the protrusions 102c and the recesses 102d of the side plate 102 are connected. When fitting into the recess 103c and the protrusion 103d of the side plate 103, the shapes of the protrusion 102c and the recess 103c coincide, and the shapes of the recess 102d and the protrusion 103d coincide with each other. Therefore, the protrusions 102c and the recesses 102d can be brought into surface contact with the grooves 103c and the protrusions 103d in intimate (no gap) surface contact. Moreover, since the protrusion part 102c, the recessed part 102d, and the recessed part 103c, and the protrusion part 103d are connected, and the shape which combined them is entangled, the area which contact | contacts surface partly becomes large and a connection can be strengthened. . Therefore, the watertightness of the longitudinal connection part can be improved and sufficient watertightness can be ensured.

At the time of the longitudinal connection, by the fastening force of the bolt 9, a downward force is applied from the inclined lower side of the protrusion 102c to the protrusion 103d, but from the inclined inner side of the recess 102d. Since upward force is applied and canceled, bending of the protrusion 103d can be prevented.

The same applies to the connection in the circumferential direction, and as shown in FIGS. 7 to 8, the protrusions 105c and 105d and the recess 105e of the end plate 105 are respectively recessed portions 104c and 104d of the end plate 104. And since the mutually fitting shapes coincide with each other when the projections 104e are fitted, they can be brought into close contact with each other, and the projections 105d and the grooves 105e, and the grooves 104d and the projections 104e. In the portion, the area in contact with the surface is partially enlarged, thereby making it possible to firmly bond. Therefore, the watertightness can be improved also about the connection part of the circumferential direction, and sufficient watertightness can be ensured. Similarly, bending of the protrusion 104e can be prevented.

In the present embodiment, the shapes of the protrusions 102c, 103d, 104e, and 105d and the recesses 102d, 103c, 104d, and 105e are square in shape as a whole when viewed from the side, respectively, It may be a round shape with curved sides.

In addition, in the above-mentioned embodiment, although the protrusion part 102c or 105d formed in the side plate 102 or the end plate 105 is formed so that the width | variety of the upper and lower sides may become narrow toward the front end side of a protrusion part, the upper surface and The lower surface may be a horizontal surface, respectively, and the grooves 103c and 104d fitted into the protrusions 102c and 105d may be formed as grooves having surfaces in intimate surface contact therewith.

The protrusions 103d or 104e formed on the side plate 103 or the end plate 104 incline downwards toward the tip side of the protrusion, and the tip end face of the protrusion is inclined with respect to the vertical direction. And / or the tip surface may be horizontal or vertical. In this case, the groove portions 102d and 105e fitted with the protrusions 103d and 104e can also be formed as groove portions having surfaces in intimate surface contact therewith.

The protrusions 102c and 103d formed on the side plates 102 and 103, the groove portions 103c and 102d fitted to the protrusions thereof, and the protrusions 104e and 105d formed on the end plates 104 and 105 and the protrusions thereof are fitted. The recessed groove portions 105e and 104d are formed in the lower portion of the segment, respectively, but can be formed in the center portion, for example.

According to the present invention, when connecting segments for the pipeline repair pipe in the longitudinal direction, the grooves and the projections formed on the opposite connection surface of the other segment with respect to the projections and the grooves formed in one connecting surface in the longitudinal direction of one segment, the surface closely Since the projecting portion and the groove portion are intertwined in a continuous shape while being in contact with each other, the contact area is partially enlarged and strongly coupled, so that sufficient watertightness at the longitudinal connecting portion can be ensured. Moreover, also about the connection in the circumferential direction, sufficient watertightness in the connection part can be ensured similarly.

Claims

A segment for assembling a conduit for repairing an aging pipe, comprising: a connection surface for connecting one after another in the longitudinal direction and a circumferential direction of the maintenance tube, and one of the connection surfaces in each direction in this connection surface. Convex projections formed convexly, concave grooves formed concave at the connecting surface thereof, and concave grooves and projections formed to fit into the projections and concave grooves formed on one side of the connecting surface on the opposite side of the longitudinal direction, respectively. And projections and recesses formed on the connecting surfaces in the longitudinal direction are continuously formed in the circumferential direction, and when connected in the longitudinal direction, the protrusions and recesses formed on one connecting surface of one segment are next. Grooves and protrusions formed on the opposite connecting surface of the segment are fitted in close contact with each other. Segment for pipeline maintenance pipes, characterized in that configured.

The said one connecting surface of Claim 1 in which the protrusion part formed convexly in this connection surface in the said circumferential direction connection surface, the recessed part formed concave in this connection surface in connection with this projection part, and said one connection surface in the opposite connection surface in the circumferential direction Each of the protrusions and the grooves of the grooves and projections formed in a shape that fits each, and the projections and grooves formed on each of the connecting surface in the circumferential direction are continuously formed in the above-mentioned longitudinal direction, and in the circumferential direction Segment for conduit repair pipe, characterized in that when the connecting portion and the groove and the projection of the opposite connection surface of the next segment is in close contact with the projection and the groove of the one connecting surface of the one segment.

A segment for assembling a conduit for repairing an aging pipe, comprising: a connection surface for connecting in order in the longitudinal direction and a circumferential direction of the maintenance pipe, and one connection surface in the circumferential direction among the connection surfaces in each direction. Convex protrusions formed, concave grooves formed concave in the connecting surface thereof, and grooves and protrusions formed in a shape that fits into the protrusions and grooves formed on one side of the connecting surface on the opposite circumferential connecting surface, respectively. And projections and recesses formed on the connecting surfaces in the circumferential direction are continuously formed in the longitudinal direction, and when connected in the circumferential direction, the projections and the recesses formed on one connecting surface of one segment are next. Grooves and protrusions formed on the opposite connecting surface of the segment are fitted in close contact with each other. Segment for pipeline maintenance pipes, characterized in that configured.

The inner side plate of which one side becomes the inner peripheral surface of the said maintenance pipe, and the side plate provided in the said circumferential direction along the said circumferential direction of this inner side surface, are provided side by side, and each outer side surface of the both side plates is the said length. A segment for conduit repair pipes, characterized in that it has a connection surface opposite to one connection surface in a direction.

The inner side plate of which one side becomes the inner peripheral surface of the said maintenance pipe, and the end plate provided in parallel with the both sides along the said longitudinal direction of this inner side plate are provided, and each outer side surface of the both end plates has the said Segment for repairing a conduit for conduit, characterized in that it has a connection surface opposite to one circumferential connection surface.

The groove according to any one of claims 1 to 5, wherein one side with respect to the groove direction of the groove portion formed in the connection surface is joined to one side with respect to the projecting direction of the protrusion formed on the one connection surface, and the groove formed on the opposite connection surface. A segment for conduit repair pipes, characterized in that one side with respect to the direction of the groove of the portion is connected to one side with respect to the direction of protrusion of the protrusion formed on the connecting surface thereof.

The side surface with respect to the protrusion direction becomes inclined so that the cross-sectional shape in the protrusion direction of the protrusion formed in the said one connection surface may become narrow gradually toward the front end side, The groove direction of the groove part of the one connection surface Segment for conduit repair pipe, characterized in that the inner surface is inclined to form an acute angle with respect to one side of the groove portion connected to one side of the projection.