KR20040033551A - Execution method for repairing manhole and manhole structure repaired by the same execution method - Google Patents

Abstract

PURPOSE: A repair method for a manhole is provided to secure the flatness of a road surface and the safety and rapidness of vehicles. CONSTITUTION: The repair method for a manhole comprises the steps of: cutting off the surroundings of the existing manhole cover by installing a vertical cutter on the upper part of the existing manhole cover, then removing the existing manhole housing containing the existing manhole cover by exposing the top of a horizontal flange of the existing manhole housing to the outside; forming a cut section by cutting off an inner circumferential surface of a manhole lower structure horizontally by installing/operating a horizontal cutter on the top of a manhole where the existing manhole housing is removed, then installing a safety device on the cut section; excavating from the top of the manhole lower structure to the horizontal cut section, and injecting rapid hardening mortar between the bases formed by installing a new manhole lower structure and between pavement layers; locating a new manhole housing attached with a backup member on the top of the new manhole lower structure, then injecting rapid hardening mortar between the top of the new manhole lower structure and the base of the new manhole housing and between pavement layers to fix the new manhole housing; injecting road sealants(25e) between an outer flange of the new manhole housing and the vertical cut section of a road surface layer and on the road surface around a manhole having rugged parts to correspond the upper surface of the new manhole housing to the road surface layer; and setting a new manhole cover(24d) on the top of the new manhole housing, then covering up a through-hole of the manhole.

Description

Manhole repair method and the manhole structure repaired by the construction method {EXECUTION METHOD FOR REPAIRING MANHOLE AND MANHOLE STRUCTURE REPAIRED BY THE SAME EXECUTION METHOD}

The present invention relates to a manhole repair method and a manhole structure repaired and repaired by the construction method. More specifically, the manhole is repaired by different materials, equipment, and construction methods used for repair and repair of a manhole embedded in a road. After the construction, the flatness of the road surface and the safety and speed of the traffic vehicle can be secured, and the manhole repairing method that can be easily carried out at a later cost as well as the renovation of the manhole, which is carried out as needed later, and its The manhole structure repaired by the construction method.

In general, the manhole buried in the road is a structure that can be accessed when maintenance of facilities such as underground pipes, water, gas pipes, and electric / communication lines. It can be divided into constructed substructures. And around the manhole is composed of pavement layer initially constructed during road construction and road surface layer formed by overlay construction.

However, the rib, which is an upper structure, may be pushed to one side while being flowed due to the impact load of the traffic vehicle, and a height deviation occurs between the road surface and the manhole after the road surface becomes higher than the manhole surface after the overlay.

If the durability of the brick or concrete substructure is poorly constructed or old, the durability is reduced, and the manhole and surrounding roads are settled while falling under the impact load of the traffic vehicle.

As described above, since the settlement of the manhole and the road surface and the height deviation generated between the road surface and the manhole decreases the rapidity while hindering vehicle traffic, in this case, the construction of the manhole is made to match the manhole surface and the road surface.

Then, referring to the conventional manhole structure constructed by the conventional manhole construction method by reference to Figures 2 to 3 attached as follows.

2 is a cross-sectional view of a manhole constructed by a conventional manhole construction method, and FIG. 3 shows that the manhole 27 that has been constructed by a conventional manhole construction method has a road surface 25a and a height deviation 25b due to the overlay 25. It is sectional drawing which shows the generated state.

As shown in Figure 2 to 3, the existing manhole can be largely divided into an upper structure consisting of ribs 27 and the lid 27b, and a lower structure 30 consisting of a brick layer or concrete, such a structure In more detail,

A manhole lower structure 30 composed of a corkcrete or brick layer on the upper surface of the conduit slab 29 buried underground and a through hole 29a formed to allow access to the conduit; A rib 27 mounted on the lower manhole structure 30 and firmly fixed to the rib 27 having a horizontal flange 27a and a seating jaw formed therein; A lid 27b mounted on the seating jaw of the rib 27 to cover the through hole 29a of the manhole; It is composed of a pavement layer 26 around a manhole, such as an asphalt concrete layer.

However, the existing manhole of such a structure, as described above, as the lower structure 30 is broken by the impact load of the traffic vehicle, the upper structure rib 27 flows and sinks, or the road surface 25a is disposed after the overlay 25. When the height deviation 25b occurs between the manhole 27 and the road surface 25a while being higher than the surface of the manhole 27, the manhole is repaired to improve the flatness of the road surface while strengthening the manhole.

So here is a brief look at the conventional construction of the repair method of the manhole as follows.

Conventional manhole repair methods have been developed in a variety of ways, the construction methods are different in each of the equipment and materials used and how to use them, summarize the differences in cutting and digging the pavement layer including the road surface layer The method and the equipment used at this time are different, and the material of the height adjusting ring or superhard mortar adjusting the height of the manhole and the method of use are different, respectively, and the ribs are fixed by filling the excavated pavement layer and the road surface layer. The method and the materials used are also different.

And there is a variety of ways to adjust the height of the manhole by fixing the height adjustment ring on the top of the ribs without having to excavate the road surface and the height adjustment ring used at this time.

However, when repairing the manhole by the repair method of the conventional manhole as described above, there were various problems as follows.

First, if the manhole repaired by the conventional method is renovated as necessary, the process is very difficult and requires excessive construction cost, such as digging high strength cemented carbide mortar used as backfilling material during the repairing process. It became.

Second, when the renovated manhole is repaired according to the conventional method, a lot of excavated wastes are generated because the road surface around the manhole is excessively excavated, and this waste becomes an environmental pollutant and the excavated part It took a large amount of superhard mortar, which was very expensive to backfill.

Third, when a cemented carbide mortar mixed with a resin component is laid on the upper surface of the lower part of the manhole, and a height adjusting ring and ribs are placed on it in order to fix it, a portion of the resin component, which is a mixture, is hardened in the process of curing the cemented carbide mortar. Since the voids are formed in the cemented carbide mortar as it flows out, the cemented carbide mortar inferior in durability due to the voids may be easily broken by the impact load of the traffic vehicle, even if the cemented carbide mortar is cured.

Fourth, in the case where the height of the manhole is raised by fixing the height adjusting ring standardized to a certain thickness by screwing or the like on the top of the rib, the height of the manhole is adjusted by the thickness of the standardized height adjusting ring. It is higher or lower than the road surface, and even if the manhole is repaired, the flatness of the road is reduced, and the height adjustment ring screwed on the top of the rib and the tightening bolt and nut are impact load and vibration of the traffic vehicle. As easily broken.

In order to solve the problems of the conventional manhole repair method and the manhole structure as described above, the present invention is more robust than before by replacing the existing ribs with a new type of ribs with improved function and then improved repair function of the manhole At the same time, when the manhole is later renovated as needed, it is easy to lift the ribs without injecting and hardening the road surface and inject and harden the carbide mortar underneath to make the manhole renovation process much more difficult than before. It is an object of the present invention to provide a manhole repair method and a manhole structure repaired and repaired by the construction method which can greatly reduce the cost required.

1 is a process diagram showing a schematic process of the repair construction method of the manhole according to the present invention;

2 is a cross-sectional view of a manhole constructed by a conventional manhole construction method;

3 is a cross-sectional view showing a state in which a height deviation is generated by overlay construction of a manhole that has been constructed by a conventional manhole construction method;

Figure 4 is a cross-sectional view showing a state in which the vertical cutter used in the repair construction method of the manhole according to the present invention is installed on the top of the conventional manhole;

Figure 5 is a cross-sectional view showing a vertical cut surface formed around the manhole cover by a vertical cutter used in the repair method of the manhole according to the present invention;

6 is a cross-sectional view showing a state in which the upper surface of the horizontal flange of the existing manhole housing completely exposed to the outside by the repairing method of the manhole according to the present invention;

Figure 7 is a cross-sectional view showing a state in which the existing manhole housing including a manhole cover is removed by a repair method of the manhole according to the present invention;

8 is a cross-sectional view showing a state in which a horizontal cutting surface is formed in the lower structure of the manhole by installing a horizontal cutter used for repairing a manhole according to the present invention;

9 is a cross-sectional view showing a state in which a safety device is installed on the horizontal cutting surface formed by the repair method of the manhole according to the present invention;

10 is a cross-sectional view illustrating a state in which the manhole is excavated from the upper portion of the lower portion of the manhole structure to a horizontal cutting surface by the repairing method according to the present invention;

Figure 11 is a cross-sectional view showing a state in which the new manhole lower structure is located on the horizontal cutting plane in the upper portion of the manhole lower structure excavated by the repair method of the manhole according to the present invention;

12 is a cross-sectional view showing a state in which the superscopy mortar is injected and integrated between the bottom surface of the new manhole lower structure and the pavement layer installed by the repairing method of the manhole according to the present invention;

Figure 13 is a cross-sectional view showing a state in which the new manhole housing is installed on the upper surface of the new manhole lower structure integrated by the repair method of the manhole according to the present invention;

14 is a cross-sectional view showing a state in which superscopy mortar is injected between the bottom surface of the new manhole housing and the packaging layer installed by the repair method of the manhole according to the present invention;

15 is a cross-sectional view showing a state in which a new manhole cover is seated after road sealing material is injected and applied to a vertical cut surface and a peripheral road surface formed by a new manhole housing fixed by a repairing method of a manhole according to the present invention;

16 is a top plan view of a manhole repaired by the manhole repair method according to the present invention.

<Explanation of symbols for the main parts of the drawings>

22: New manhole lower structure 23a, b: Carbide mortar

24: new manhole housing 24a: inner flange

24b: backup material 24c: outer flange

24d: new manhole cover 25: road surface layer (overlay layer)

25a: road surface 25b: height deviation point

25c: vertical cut surface 25d: road surface layer inside cut surface

25e: road seal 26: pavement layer

26a: Excavation surface of the packaging layer 26b: Pavement layer inside the cutting surface

30: existing manhole lower structure 30a: remaining manhole lower structure

30b: Inner circumferential surface of the lower manhole structure 30c: Horizontal cut surface

31: Horizontal cutter (frame) 31a: Load of horizontal cutter

31b: Horizontal cutter blade 32: Vertical cutter (engine cutter)

32a: rotating plate 32b: adjusting rod

33: Manhole mounter (frame) 34: Safety device

In order to achieve the above object, the present invention cuts the circumference of the manhole cover by installing a vertical cutter in the upper center of the existing manhole cover, and then completely exposed to the outside of the horizontal flange of the existing manhole housing the existing manhole Removing the existing manhole housing unit including a lid;

Installing a horizontal cutter on the upper manhole from which the existing manhole housing is removed, cutting the inner circumferential surface of the lower manhole structure in a horizontal state to form a cut surface, and then installing a safety device on the cut surface;

Excavating from an upper end of the lower manhole structure to a horizontal cutting surface, and then injecting supersonic mortar between the pavement layer and the bottom layer formed by installing a new manhole lower structure to integrate the lower manhole;

A new manhole housing having a backing material attached to the lower end of the new manhole lower structure is placed, and a new manhole housing is injected by injecting superscopy mortar between the upper surface of the new manhole lower structure and the bottom of the new manhole housing and between the pavement layer. Fixing;

Injecting and applying a road sealant between the fixed outer periphery of the new manhole housing and the vertical cut surface of the road surface layer and the road surface around the uneven manhole to match the top surface of the new manhole housing with the road surface layer;

It provides a repair construction method of the manhole comprising the step of covering the through-holes of the manhole by seating a new manhole cover on the top of the new manhole housing with the same height as the road surface layer.

In addition, the present invention provides a manhole lower structure in which a manhole lower structure of a brick layer or concrete structure is partially excavated and only a part thereof remains; A new manhole lower structure made of precast concrete, which is installed on the upper end of the manhole lower structure which has been excavated by replacing the excavated portion of the manhole lower structure; A newly installed new manhole housing composed of an inner circumferential flange, an outer circumferential flange, a backing material and a seating jaw, while being installed to replace the existing manhole housing on top of the new manhole lower structure; Superhard mortar hardened by injection between the upper surface of the excavated and remaining manhole lower structure and the bottom and pavement layers of the new manhole lower structure and superhard mortar hardened by being injected around the upper surface of the new manhole lower structure and the new manhole housing Wow; A manhole cover mounted on the seating jaw of the new manhole housing and covering the through hole of the manhole; The new manhole housing and the road seal material of the rubber asphalt system, which is an elastic material that matches the top surface and the road surface of the newly installed new manhole housing in a state of being injected or applied to the uneven portions of the road surface layer and the road surface. It provides a repaired manhole structure characterized by.

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

1 is a process chart showing a schematic process of the repair method of a manhole according to the present invention.

As shown in Figure 1, the manhole repair method according to the present invention is carried out in each step, hereinafter will be described in detail by subdividing the present invention in each step.

Figure 4 is a cross-sectional view showing a state in which the vertical cutter used in the repair method of the manhole according to the present invention is installed on the top of the conventional manhole, Figure 5 is a manhole cover by the vertical cutter used in the repair method of the manhole according to the present invention It is sectional drawing which shows the vertical cutting surface formed in the periphery.

As shown in Figures 4 to 5, the present invention is installed by operating the vertical cutter 32 in the central portion of the upper surface of the existing manhole cover 27b installed on top of the manhole 27, the upper periphery of the manhole 27 While enclosing the cut surface 25c perpendicular to the road surface layer 25 is formed.

6 is a cross-sectional view showing a state in which the upper surface of the horizontal flange of the existing manhole housing completely exposed to the outside by the repair method of the manhole according to the present invention, Figure 7 is a conventional manhole cover by the repair method of the manhole according to the present invention It is a cross-sectional view showing a state in which the existing manhole housing integral including.

As shown in FIGS. 6 to 7, the present invention removes the vertical cutter 32 from the upper surface of the existing manhole cover 27b, and then the road surface layer 25d and the paving layer inside the vertical cut surface 25c. 26b) is sequentially excavated to completely expose the upper surface of the horizontal flange 27a constituting the existing rib 27 to the outside,

When completely exposed as described above, the existing manhole housing 27 including the existing manhole cover 27b is demolished from the top of the manhole.

8 is a cross-sectional view showing a state in which a horizontal cutting surface is formed in the lower structure of the manhole by installing a horizontal cutter used for repairing the manhole according to the present invention, Figure 9 is a horizontal formed by the repair method of the manhole according to the present invention It is sectional drawing which shows the state in which the safety device is installed in the cut surface.

As shown in Figure 8 to 9, by installing and operating the horizontal cutter 31 on the top of the manhole, the existing manhole housing 27 is removed, the inner circumferential surface of the manhole lower structure 30 composed of a concrete or brick layer A cut surface 30c in a horizontal state is formed at 30b,

When the cut surface 30c of the formed horizontal state is formed, the horizontal cutter 31 is removed, and then the horizontal state of the formed horizontal state is prevented in order to prevent various safety accidents that may occur in the excavation process of the manhole lower structure 30 to be performed. The safety device 34 is inserted into the cutting surface 30c.

10 is a cross-sectional view illustrating a state in which the manhole is excavated from the upper portion of the lower portion of the manhole structure to a horizontal cutting surface by the repairing method of the manhole according to the present invention.

As shown in FIG. 10, the present invention excavates from the upper end of the manhole lower structure 30 to the horizontal cutting surface 30c so that the horizontal cutting surface 30c is excavated and becomes a flat upper surface of the remaining manhole lower structure 30a. To do the work,

When the horizontal work is completed as described above, the safety device 34 installed in the manhole is removed from the manhole.

11 is a cross-sectional view illustrating a state in which a new manhole lower structure is positioned on a horizontal cut surface at an upper portion of a manhole lower structure excavated by the repairing method of a manhole according to the present invention.

As shown in Fig. 11, the present invention wets the surface of the excavation surface 26a of the pavement layer, the horizontal cutting surface 30c, and the surface of the new novel manhole substructure 30a made of precast concrete. Since the injection and adhesion of the cemented carbide mortar can be performed well,

The new manhole lower structure 22, which is made of precast concrete, is installed on the upper surface of the excavated remaining manhole lower structure 30a to replace the excavated portion of the lower manhole structure.

12 is a cross-sectional view showing a state in which superscopy mortar is injected and integrated between the bottom surface of the new manhole lower structure and the pavement layer installed by the repairing method of the manhole according to the present invention.

As shown in FIG. 13, the present invention provides a structure between the top surface of the excavated remaining manhole lower structure 30a and the bottom surface of the newly installed new manhole lower structure 22 and the newly installed new manhole lower structure 22 and the paving layer ( By inserting the cemented carbide mortar 23 between the 26, the excavated and left manhole lower structure 30a and the newly installed new manhole lower structure 22 and the pavement layer 26 are integrated.

13 is a cross-sectional view showing a state in which the new manhole housing is installed on the upper surface of the lower manhole structure integrated by the repair method of the manhole according to the present invention, Figure 14 is installed by the repair method of the manhole according to the present invention It is sectional drawing which shows the state which superhard mirror mortar is inject | poured between the bottom face of a new manhole housing, and a pavement layer.

As shown in Figure 13 to 14, the present invention is a frame 33 of the manhole installer in a state in which the new manhole housing 24 of the new type different from the existing manhole housing 27 is fastened to the manhole installer 33 It is installed at the center of the upper end of the manhole so as to span the road surface 25a around the manhole, and a backup material 24b is provided between the inner circumferential flange 24a of the newly installed new rib 24 and the newly installed manhole lower structure 22. Make sure that it fits tightly,

By inserting the superhard mirror mortar 23b between the upper surface of the newly installed new manhole lower structure 22 and the bottom of the newly installed new manhole housing 24 and between the newly installed new rib 24 and the packaging layer 26, The newly installed new manhole housing 24 is fixed on the newly installed new manhole lower structure 22. At this time, when the new manhole housing 24 is fixed, a drier such as a gas burner is used to attach to the road surface layer 25. The newly installed new ribs 24 are fixed on the formed vertical cut surface 25c and the newly installed new manhole lower structure 22.

15 is a cross-sectional view illustrating a state in which a new manhole cover is seated after road sealing material is injected and applied to a vertical cut surface and a peripheral road surface formed by a new manhole housing fixed by a repairing method of a manhole according to the present invention. 16 is a top plan view of the manhole repaired by the manhole repair method according to the present invention.

As shown in Figs. 15 to 16, a vertical cut surface 25c formed on the road surface layer 25 using a dryer such as a gas burner and a peripheral flange 24c and a manhole periphery of the newly installed new manhole housing 24 are shown. After drying the road surface (25a) of the new manhole housing 24, the manhole installer 33 is separated and removed,

Unevenness while injecting the road seal material 25e of rubber asphalt system, which is a stretchable material, between the outer peripheral flange 24c of the newly installed new manhole housing 24 and the vertical cut surface 25c of the road surface layer 25. The road sealant 25e is also applied to the road surface around the formed manhole to precisely match the road surface 25a with the upper surface of the newly installed rib 24.

The manhole of the present invention by covering the through-hole 29a of the manhole by seating a new manhole cover 24d of a new form having improved function than the existing manhole cover 27b removed on the top of the newly installed manhole housing 24 The repair construction method is completed.

Hereinafter, embodiments of the present invention will be described in more detail with reference to FIGS.

4 to 5, the vertical cutter 32 is installed in the central portion of the upper surface of the existing manhole cover 27b, and then operated while setting the operating range of the vertical cutter to the outside of the upper periphery of the manhole. The cut surface 25c of the perpendicular state is formed on the road surface layer 25 while the manhole is wrapped at regular intervals.

Here, referring to the use method and features of the vertical cutter consisting of the rotating plate 32a, the adjusting rod 32b, and the engine-type cutter 32 are as follows.

The method of using the vertical cutter, the step of installing a rotating plate (32a) in the central portion of the upper surface of the existing manhole cover (27b) is installed; Fastening an adjusting rod (32b) to the rotating plate (32a); Fastening an engine type cutter (32) to one end of the adjusting rod (32b); By adjusting the length of the adjusting rod (32b) through the step of setting the cutting range (the cutting surface formed in the road surface layer to form a circle on the road surface where the radius of the circle is a cutting range) When the 32 is operated, the engine cutter 32a turns around the manhole around the rotating plate to form a cut surface 25c perpendicular to the road surface layer 25.

In addition, the vertical cutter 32 is characterized by a simple structure, easy to use and low in cost to purchase and lower the maintenance cost of the manhole.

Subsequently, as shown in FIG. 6, the vertical cutter 32 is removed from the upper surface of the existing manhole cover 27b, and then the road surface layer between the existing manhole housings 27 at the vertical cutting surface 25c using a pavement crusher. 25d and the pavement layer 26b are sequentially excavated to completely expose the upper surface of the horizontal flange 27a constituting the existing manhole housing 27 to the outside,

As shown in FIGS. 7 to 8, the existing manhole housing 27 including the manhole cover 27b is demolished from the upper end of the manhole, and as shown in FIG. 8, the existing manhole housing 27 is A horizontal cutter 31 having an operating range set on the top of the removed manhole is operated to form a horizontal cut surface 30c on the inner circumferential surface 30b of the manhole lower structure 30 which is a brick or concrete layer.

Herein, the structure, the method of use, and the features of the horizontal cutter 31 will be described as follows.

It is composed of a rod 31a capable of adjusting the vertical height while being mounted on the horizontal cutter 31, and a horizontal cutter blade 31b which rotates at high speed by a motor attached to one end of the rod 31a. .

And the use of the horizontal cutter 31 is to remove the existing manhole housing 27 at the top of the manhole and then look at the state of the manhole lower structure 30, whether the excavation and excavation range of the manhole lower structure 30 Will be determined,

After the excavation range is determined as described above, the horizontal cutter 31 is operated in a horizontal state in which the operating range, that is, the height (the distance from the road surface to the portion to be cut off) and the width (proportional to the inner diameter of the manhole) are set. The frame 31 of the cutter is installed in the center of the top of the manhole so as to span the road surface layer 25 on the outside of the manhole, and then operated.

The horizontal cutter blade 31b that rotates at a high speed by the hydraulic motor mounted to one end of the rod 31a rotates at least one or more times along the inner circumferential surface of the manhole lower structure 30, and thus the whole of the manhole lower structure 30 Is cut in a horizontal state to a certain depth to form a cutting surface 30c in a horizontal state.

Thereafter, the horizontal cutter 31 is used by going through the process of removing the horizontal cutter 31 from the upper end of the manhole.

On the other hand, the reason for using the horizontal cutter 31 in the present invention is because the manhole lower structure 30 is inferior as described above, or the manhole 27 surface and road surface 925a due to the overlay 25 construction, etc. When the height deviation 25b occurs between), the manhole lower structure 30 and the rib 27 are excavated and removed, and then the rib 27 removed thereon is firmly restored while the manhole lower structure 30 is firmly recovered. To fix the manhole again.

In the conventional manhole repair method, the manhole substructure and ribs were difficult to repair and repair at the same time because of lack of technology for excavating and restoring the manhole substructure. For this reason, most of the conventional manholes were limited to height adjustment of the ribs 27. The repair of the manhole was made, and the manhole undercarriage 30 had no choice but to be repaired.

Therefore, even if the manhole has been repaired, the manhole lower structure 30, which is inferior to the impact load of the traffic vehicle, easily descends, and even the repaired rib 27 may easily flow and settle down.

Therefore, when the cutting portion 30c of the poor manhole lower structure 30 is cut horizontally using the horizontal cutter 31, the cut surface 30c is flat, and the height from the cut surface 30c to the road surface 25a is newly installed. Since the thickness of the manhole lower structure 22 made of precast concrete and the new rib 24 newly installed on the upper side is the same, the new manhole lower structure 22 newly installed on the horizontal cut surface 30c and Even if the ribs are placed one after another without height adjustment, it is possible to easily match the height of the surface of the manhole and the height of the road surface 25a, and then, by injecting and hardening the superhard mirror mortar 23 around them, the manhole lower structure Since the entire manhole including the 30 can be repaired very precisely and steadily, quickly and economically, the newly developed horizontal cutter 31 for repairing the manhole is newly developed and used in the present invention. A.

Subsequently, as shown in FIG. 9, the horizontal cutter 31 is removed from the upper end of the manhole, and then in the manhole to prevent various safety accidents that may occur during the excavation process of the manhole lower structure 30, which is a brick or concrete layer. Install the safety device (34).

Then, as shown in FIG. 10, the manhole lower structure 30 is excavated to the horizontal cutting surface 30c using the pavement crusher, so that the horizontal cutting surface 30c is excavated and the flat upper surface of the remaining manhole lower structure 30a is removed. After this, the safety device 34 installed in the manhole is removed from the manhole,

As shown in Fig. 11, the surface of the excavation surface 26a of the pavement layer and the horizontal cut surface 30c and the surface of the manhole substructure 22 made of precast concrete to be used in the future is moistened, followed by the injection of superhard mortar. And after the adhesion is made well, a new manhole substructure 22 made of precast concrete is installed on the upper surface of the remaining manhole substructure 30a to replace the excavated manhole substructure. .

As shown in FIG. 12, a superhard tip mortar 23a is disposed between the upper surface of the excavated remaining manhole lower structure 30a and the bottom surface of the newly installed new manhole lower structure 22 and the excavation surface 26a of the pavement layer. By injecting, the excavated remaining manhole lower structure 30a and the newly installed new manhole lower structure 22 and the excavated pavement layer 26 are integrated.

Thereafter, as shown in FIG. 13, the frame 33 of the manhole installer spans the road surface layer 24 around the manhole while the new manhole housing 24 of the new type is suspended on the manhole installer 33. Installed at the center of the upper end of the manhole, the backing material 24b is sandwiched between the inner circumferential flange 24a of the newly installed manhole housing 24 and the upper surface of the newly installed manhole lower structure 22. .

As shown in Figure 14, by inserting the superscopy mortar (23b) between the upper surface of the newly installed new manhole lower structure 22 and the bottom surface of the excavated pavement layer 26 and the newly installed new rib 24, The newly installed new rib 24 is fixed to the upper surface of the newly installed new manhole lower structure 22,

Then, as illustrated in FIG. 15, hot air is dried between the vertical cut surface formed in the road surface layer 25 and the outer circumferential flange 24c of the newly installed new manhole housing 24 and around the manhole. Later, the manhole installer 33 is detached from the newly installed new manhole housing 24 and then removed.

Injecting and applying the newly-installed manhole housing 24, the outer flange (24c) and the hot air-dry vertical cut surface (25c) and the road seal material (25e) of the rubber asphalt system as a stretch material to the unevenness formed on the road surface around the manhole In order to precisely match the top surface of the newly installed rib 24 with the road surface 25a, a new type of manhole cover 24d is seated on the seating jaw of the newly installed new rib 24. According to the repair method of the manhole according to the repair of the manhole is completed.

As described above, when the manhole is repaired by the repairing method of the manhole according to the present invention, the following various effects can be obtained.

First, when the existing rib 27 is dismantled and replaced with a new rib 24 having a new shape, the new rib 24 newly installed in the superscopy mortar 23b fixed to the upper end of the newly installed new manhole lower structure 22 is installed. Since the inner circumferential flange 24a of the) is buried and firmly fixed, the rib 24 does not flow even after the impact load of the traffic.

Second, when removing the existing rib 27 and replacing it with a new type of new rib 24, the repaired manhole needs to be cut or excavated in the road surface layer and pavement layer around the manhole. Easy lifting of the ribs 24 to precisely match the height of the top surface of the ribs with the height of the road surface 25a, and then inserting and hardening a superhard mirror mortar under the ribs 24 to rebuild the manhole. Since it is completed, it is possible to minimize the construction cost required while facilitating the renovation construction of the manhole.

Third, by cutting (30c) and excavating a predetermined portion of the manhole lower structure (30), which is inferior in durability, using a horizontal cutter (31) and a road crusher, and replacing the excavated portion with a new material to repair the manhole. While facilitating the construction process, the entire manhole including the manhole lower structure 30 can be repaired quickly, precisely, and firmly.

Fourth, the manhole mounting device 33 is used to precisely match the height of the manhole surface, that is, the top surface of the rib 24 with the height of the road surface 25a, thereby facilitating the installation process of the rib 24 and repairing the manhole very precisely. It is possible to construct.

Fifth, since the excavation of the road surface layer and the pavement layer 26 can be reduced as much as possible when the renovated manhole is repaired later, it is possible to reduce the occurrence of excavation waste, which is a source of environmental pollution, and to refill the excavated pavement layer. By minimizing the cost of the super fast mortars (23a, 23b), the cost of manhole repair can be minimized.

Sixth, the manhole can be repaired precisely and firmly to significantly improve the manhole's robustness and the flatness of the road surface 25a, as well as to maintain such a state continuously, thereby maintaining the safety and speed of the traffic. Therefore, it is possible to reduce the noise generated by the collision between the manhole cover and the traffic vehicle, thereby improving the year's environment.

Claims (7)

Install the vertical cutter 32 at the upper center of the existing manhole cover 27b to cut the periphery of the manhole cover 27b, and then completely expose the upper surface of the horizontal flange 27a of the existing manhole housing 27 to the outside. Dismantling the existing manhole housing 27 integrally including the existing manhole cover 27b; By installing the horizontal cutter 31 on the upper manhole in which the existing manhole housing 27 is removed, the inner peripheral surface 30b of the manhole lower structure 30 is cut in a horizontal state to form a cutting surface 30c, and then the cutting surface Installing a safety device (34) at 30c; After excavating from the upper end of the manhole lower structure 30 to the horizontal cutting surface 30c, supersonic mortar 23a is injected between the bottom surface and the pavement layer 26 formed by installing the new manhole lower structure 22. To integrate; A new manhole housing 24 having a backing material 24b attached thereto is disposed on the lower surface of the new manhole lower structure 22, and the upper surface of the new manhole lower structure 22 and the bottom of the new manhole housing 24. Fixing a new manhole housing 24 by injecting a superscopy mortar 23a between the pavement layer 26 and the pavement layer 26; New manholes are injected and applied to the road surface material 25e between the outer circumferential flange 24c of the fixed new manhole housing 24 and the vertical cut surface 25c of the road surface layer 25 and the road surface around the manhole in which the unevenness is formed. Matching the top surface of the housing (24) with the road surface layer (25); Repairing method of the manhole comprising a step of covering the through hole (29a) of the manhole by seating a new manhole cover (24d) on the top of the new manhole housing 24, the height of the road surface layer (25). The method of claim 1, The step of cutting the periphery of the manhole cover 27b in the step of removing the existing manhole housing 27 integrally installs the rotary plate 32a of the vertical cutter on the central portion of the upper surface of the manhole cover 27b. The operating range of the vertical cutter 32 is set by fastening the adjusting rod 32b to the rotating plate 32a and adjusting the length of the adjusting rod 32b. Then, the engine-type cutter is attached to one end of the adjusting rod 32b. (32) is fastened, and the engine-type cutter 32 attached to one end of the adjusting rod 32b is operated so that the engine-type cutter 32 surrounds the existing ribs 27 with the rotation plate 32a as the axis. Repairing method of the manhole, characterized in that to form a cut surface (25c) perpendicular to the road surface layer 25 while turning. The method of claim 1, In the step of installing the safety device 34 on the cut surface 30c, the process of cutting the inner circumferential surface 30b of the manhole lower structure 30 in a horizontal state to form the cut surface 30c includes the manhole lower structure 30. Determine the excavation and cutting range of the manhole lower structure 30 by looking at the state of, then the height of the operating range of the horizontal cutter 31 in accordance with the determined excavation and cutting range (site to be cut of the manhole lower structure on the road surface) Intervals) and width (width of the cutting line to be formed in a horizontal state), and the frame 31 of the horizontal cutter is installed at the upper center of the manhole 27 so that the outside of the manhole spans the road surface 25a. After the horizontal cutter 31 is operated, the blade 31b of the operating horizontal cutter 31 cuts a predetermined portion of the lower manhole structure 930 to an appropriate depth while rotating the inner circumferential surface 30b of the lower manhole structure at least one turn. Characterized in that to form a flat cutting surface (30c) The repair of a manhole construction method. The method of claim 1, The step of injecting and integrating the superhard mirror mortar 23a between the bottom surface formed by installing the new manhole lower structure 22 and between the pavement layer 26 is an excavation surface 26a of the pavement layer 26 and the Clean the cut surface (30c) formed in a horizontal state to clean, sprayed with water wet enough not flowing on the surface of the clean cut surface (30c) and the new manhole lower structure 22, and then free depending on the depth of the excavated manhole lower structure One or several new manhole substructures 22 made of cast concrete are piled up, and superhard mortars 23a and 23b are injected into the interspace formed by the installed new manhole substructures 22, Repairing method of the manhole, characterized in that the hard boiled mortar (23a) injected into the space between the fixed new manhole housing (24) using a dryer to cure. The method of claim 1, The step of fixing the new manhole housing 24 by injecting a superhard mirror mortar 23a between the upper surface of the new manhole lower structure 22 and the bottom of the new manhole housing 24 and the packaging layer 26 is performed. If the top surface height of the manhole housing 24 is higher or lower than the road surface 25a, completely remove the backup material 24b from the inner circumference flange 24a or replace it with a backup material 24b of different thickness, and then replace the new manhole housing ( 24) Re-installation method of the manhole, characterized in that to match the height of the manhole top surface and the road surface again. The method of claim 1, Matching the upper surface of the new manhole housing 24 with the road surface layer 25 is performed by injecting a superhard mortar 23b between the new manhole lower structure 22 and the new manhole housing 24. The superscopy mirror mortar 23b is filled up to the middle of the outer peripheral flange 24c of the new manhole housing 24 and the vertical cut surface 25c of the road surface layer 25, and then from the surface of the filled superscopy mortar 23b to the road surface. While injecting the road seal material 25e of the rubber asphalt system, which is a stretchable material, the uneven portions formed on the road surface 25a are also coated with the road seal material 25e to precisely cover the surfaces of the road surface 25a and the manhole 24. The repair construction method of the manhole characterized by matching. A manhole lower structure in which part of the manhole lower structure of the brick layer or concrete structure is excavated and only part thereof remains; A new manhole lower structure made of precast concrete, which is installed on the upper end of the manhole lower structure which has been excavated by replacing the excavated portion of the manhole lower structure; A newly installed new rib composed of an inner circumferential flange, an outer circumferential flange, a backing member, a seating jaw, etc., while being installed by replacing the existing manhole housing on the upper portion of the new manhole lower structure; Superhard mortar hardened by injection between the upper surface of the excavated and remaining manhole lower structure and the bottom and pavement layers of the new manhole lower structure and superhard mortar hardened by being injected around the upper surface of the new manhole lower structure and the new manhole housing Wow; A manhole cover mounted on the seating jaw of the new manhole housing and covering the through hole of the manhole; The new manhole housing and the road seal material of the rubber asphalt system, which is an elastic material that matches the top surface and the road surface of the newly installed new ribs very precisely in the state of being injected or applied to the uneven part of the road surface layer and the road surface. Repaired manhole structure.