KR20040005722A - Method of construction for manhole repair and level control device using the method of construction - Google Patents

Method of construction for manhole repair and level control device using the method of construction Download PDF

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Publication number
KR20040005722A
KR20040005722A KR1020030084901A KR20030084901A KR20040005722A KR 20040005722 A KR20040005722 A KR 20040005722A KR 1020030084901 A KR1020030084901 A KR 1020030084901A KR 20030084901 A KR20030084901 A KR 20030084901A KR 20040005722 A KR20040005722 A KR 20040005722A
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KR
South Korea
Prior art keywords
manhole
frame
horizontal
manhole frame
road surface
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KR1020030084901A
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Korean (ko)
Inventor
서병구
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서병구
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Priority to KR1020030084901A priority Critical patent/KR20040005722A/en
Publication of KR20040005722A publication Critical patent/KR20040005722A/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/128—Repairs of manhole shafts
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14—Covers for manholes or the like; Frames for covers
    • E02D29/1409—Covers for manholes or the like; Frames for covers adjustable in height or inclination
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00—Production methods
    • E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00—Production methods
    • E02D2250/003—Injection of material
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00—Materials
    • E02D2300/0004—Synthetics
    • E02D2300/0018—Cement used as binder
    • E02D2300/0021—Mortar

Abstract

PURPOSE: A manhole repairing method and a leveling apparatus are provided to prevent accidents by restricting protrusion or subsidence of the manhole with leveling the manhole with the ground, and to work easily with simple structure at a low cost. CONSTITUTION: Asphalt outside a manhole is excavated by a cutter and a rock drill, and a manhole cover(30') is separated from a manhole frame(30). A leveling apparatus(40) having plural hydraulic cylinders(42) is installed in the inner periphery of the manhole frame, and the inner periphery of the manhole frame is pressed by an adjusting bar(44) formed in the end of a piston rod(43) of the hydraulic cylinder. The pressed manhole frame is placed in the upper part of a manhole port, and the adjusting bar of the leveling apparatus is suspended on the ground to level the manhole frame with the ground. A stand(60) is mounted between the manhole frame and the manhole port, and a mold(70) is mounted in the manhole port. Mortar is poured outside the manhole, and hardened to fix the manhole frame.

Description

맨홀보수공법 및 그 공법에 사용되는 수평조절장치{Method of construction for manhole repair and level control device using the method of construction}Method of construction for manhole repair and level control device using the method of construction}

본 발명은 맨홀보수공법 및 그 공법에 사용되는 수평조절장치에 관한 것으로, 더욱 상세하게는 맨홀의 보수작업시 삼각수평실린더로 형성된 수평조절장치를 이용하여 맨홀이 노면과 수평을 이루도록 형성함으로써, 경사진 노면에서도 맨홀의 돌출이나 함몰이 발생하지 않아 대형사고 등을 방지할 수 있고, 수평조절장치의 구조가 간단하여 작업이 용이할 뿐만 아니라, 시공비가 저렴하여 매우 경제적인 맨홀보수공법 및 그 공법에 사용되는 수평조절장치에 관한 것이다.The present invention relates to a manhole repair method and a horizontal adjusting device used in the method, and more particularly, by forming the manhole to be horizontal to the road surface by using a horizontal adjusting device formed of a triangular horizontal cylinder during the repair of the manhole. Manholes can be prevented from protruding or recessed on the surface of the photograph, and large accidents can be prevented.The structure of the horizontal adjusting device is simple, which makes it easy to work, and the construction cost is low. It relates to a leveling device used.

일반적으로 맨홀은 최초설치시 도로의 노면과 수평이 되도록 설치되나 도로의 아스팔트를 덧씌우는 보수공사가 시행되면 기존 노면보다 그 높이가 높아져 맨홀이 노면에 함몰되어지는 현상이 발생하게 된다. 따라서 도로 보수공사가 진행되면 맨홀도 보수공사를 수행하게 되는데, 상기 보수공사는 먼저 기존 맨홀커버와 맨홀프레임을 노면에서 분리하고, 맨홀구 외주면에 변화된 노면 높이만큼의 벽돌을 적층하거나 콘크리트를 타설한 후 상기 벽돌이나 콘크리트가 경화되면 맨홀을 노면과 동일하게 재설치하였다. 하지만 상기와 같은 보수공사는 작업이 복잡하고 번거러울 뿐만 아니라, 작업시간이 많이 소모되는 등의 문제가 발생되었다.In general, the manhole is installed to be level with the road surface at the time of initial installation, but if the repair work is overlaid with the asphalt of the road, the height is higher than the existing road surface, causing the manhole to sink into the road surface. Therefore, when the road repair work is carried out, the manhole is also repaired, and the repair work first separates the existing manhole cover and manhole frame from the road surface, and laminates or places concrete as much as the changed road height on the outer circumference of the manhole hole. After the brick or concrete is cured, the manhole is reinstalled in the same manner as the road surface. However, the repair work as described above has a problem such as not only complicated and cumbersome work, but also a lot of work time.

따라서 최근 맨홀프레임의 저면으로 볼트나 스프링을 장착하여 보수공사시 상기 볼트나 스프링을 통해 맨홀의 높이를 증대시킨 것이 있으나, 이는 노면과 동일한 높이로 증대시키기 위해서 정밀한 조절작업이 필요하고, 그로 인하여 작업시간이 많이 소모되었다. 뿐만 아니라, 노면이 경사각으로 형성될 경우 노면과의 수평유지가 힘들어 차량운행시 소음이 발생되거나 맨홀이 이탈되어 자칫 대형사고를 유발시킬 수 있는 우려가 발생하고 있는 실정이다.Therefore, in recent years, the height of the manhole is increased through the bolt or the spring during the repair work by installing the bolt or the spring to the bottom of the manhole frame, but this requires precise adjustment work to increase the height to the same height as the road surface, thereby working It was a lot of time. In addition, when the road surface is formed at an inclination angle, it is difficult to maintain the level with the road surface, and there is a concern that noise may occur during driving of the vehicle or the manhole may be separated to cause a large accident.

본 발명의 목적은 종래의 이와같은 문제점을 해소하고자 한 데 있는 것으로, 삼각수평실린더로 형성된 수평조절장치를 이용하여 맨홀분리단계, 수평조절단계, 맨홀프레임 고정단계로 맨홀 보수작업을 진행함으로써, 수평조절장치가 맨홀 프레임을 지지하는 동시에 노면과의 정확한 수평을 유지시켜 도로 안전성은 증대시키고 소음은 감소시킬 뿐만 아니라, 수평조절장치의 장착 및 작동이 용이하여 전체 작업시간을 단축시키고, 공정의 효율성은 증대시킬 수 있는 맨홀보수공법 및 그 공법에 사용되는 수평조절장치를 제공코자 하는데 그 목적이 있다.The object of the present invention is to solve such problems in the prior art, by using a horizontal adjustment device formed of a triangular horizontal cylinder, the manhole separation step, the horizontal adjustment step, the manhole frame fixing step to proceed to the manhole, horizontal The adjuster supports the manhole frame and at the same time maintains the exact level of the road surface, which increases road safety and reduces noise, and it is easy to install and operate the leveling device, which shortens the overall working time and improves the efficiency of the process. The purpose of the present invention is to provide a manhole repair method that can be increased and a leveling device used in the method.

도 1은 본 발명의 전체 공법의 흐름을 도시한 단면도1 is a cross-sectional view showing the flow of the entire construction method of the present invention

도 2는 본 발명의 맨홀분리단계를 도시한 상태도Figure 2 is a state diagram showing a manhole separation step of the present invention

도 3a 내지 3c는 본 발명의 수평조절단계를 도시한 상태도Figure 3a to 3c is a state diagram showing a horizontal adjustment step of the present invention

도 4a 또는 4b는 본 발명의 맨홀프레임고정단계를 도시한 상태도Figure 4a or 4b is a state diagram showing a manhole frame fixing step of the present invention

< 도면의 주요부분에 대한 부호의 설명 ><Description of Symbols for Major Parts of Drawings>

10: 커터기 20: 착암기 30: 맨홀프레임10: cutter 20: rock drill 30: manhole frame

30': 맨홀커버 40: 수평조절장치 41: 고정편30 ': Manhole cover 40: Leveling device 41: Fixed piece

42: 실린더 43: 피스톤 로드 44: 조절대42: cylinder 43: piston rod 44: adjuster

45: 수평조절부 46: 압착부 47: 유체유입구45: horizontal adjustment portion 46: crimping portion 47: fluid inlet

47': 유체유출구 50: 맨홀구 60: 거치대47 ': fluid outlet 50: manhole 60: holder

70: 거푸집 80: 스크래퍼 100: 맨홀70: die 80: scraper 100: manhole

S1: 맨홀분리단계 S2: 수평조절단계 S3: 맨홀프레임고정단계S1: Manhole separation step S2: Horizontal adjustment step S3: Manhole frame fixing step

통상의 맨홀보수공법에 있어서, 맨홀(100) 외곽의 아스팔트를 커터기(10)와 착암기(20)로 굴착하여 맨홀커버(30')와 맨홀프레임(30)을 분리해 내는 맨홀분리단계(S1)와; 분리된 상기 맨홀(100)의 맨홀프레임(30) 내주연 중심으로는 다수개의 유압실런더(42)로 형성된 수평조절장치(40)를 장착한 후, 유압실린더(42)의 피스톤 로드(43) 종단에 형성되어 있는 조절대(44)로 맨홀프레임(30) 내주면을 가압하고, 가압된 상태의 맨홀프레임(30)은 맨홀구(50) 상측으로 위치시키되,수평조절장치(40)의 조절대(44)가 노면에 걸치게 하여 맨홀프레임(30)이 노면과 수평을 유지하도록 하는 수평조절단계(S2)와; 맨홀프레임(30)과 맨홀구(50) 사이의 공간에는 거치대(60)를 장착하고, 맨홀구(50) 내부에는 거푸집(70)을 장착한 후, 맨홀구(50) 외곽의 굴착부분에 모르타르를 타설하고 포설 및 다짐하는 맨홀프레임 고정단계(S3);를 포함하여 형성됨을 특징으로 하는 것이다.In the conventional manhole repair method, the manhole separation step (S1) for digging the asphalt outside the manhole 100 with the cutter 10 and the rock drill 20 to separate the manhole cover 30 'and the manhole frame 30 Wow; After mounting the horizontal adjusting device 40 formed of a plurality of hydraulic cylinders 42 to the inner circumferential center of the manhole frame 30 of the separated manhole 100, the piston rod 43 of the hydraulic cylinder 42 The manhole frame 30 pressurizes the inner circumferential surface of the manhole frame 30 with the adjuster 44 formed at the end, and the manhole frame 30 in the pressurized state is positioned above the manhole hole 50, and the adjuster of the horizontal adjusting device 40 is provided. Horizontal adjustment step (S2) so that the 44 over the road surface so that the manhole frame 30 is level with the road surface; Mount the cradle 60 in the space between the manhole frame 30 and the manhole hole 50, the formwork 70 is mounted in the manhole hole 50, and then mortar on the excavated portion of the manhole hole 50 It is characterized in that it is formed, including; and the manhole frame fixing step of placing and compacting (S3).

통상의 수평조절장치(40)에 있어서, 중심의 고정편(41) 외주연으로 3개의 유압실린더(42)가 소정각도로 이격 용착되어 있고, 상기 유압실린더(42)의 상측에는 유체유입구(47)와 유체유출구(47')가 형성되어 있으며, 상기 유압실린더(42)의 각 피스톤 로드(43) 종단에는 "ㄱ"자 형상의 조절대(44)가 용착되어져 있되, 상기 각 조절대(44)의 수평으로된 상측 수평유지부(45)는 수직으로된 일측 압착부(46)보다 길게 형성되어져 있음을 특징으로 하는 것이다.In the usual horizontal control device 40, three hydraulic cylinders 42 are welded at predetermined angles on the outer circumference of the fixed piece 41 in the center, and the fluid inlet 47 is located above the hydraulic cylinders 42. ) And the fluid outlet 47 ', and the end of each piston rod 43 of the hydraulic cylinder 42 is welded to the end of the "44" shaped member 44, each of the adjusters 44 The horizontal horizontal holding portion 45 of the horizontal) is characterized in that it is formed longer than the one pressing portion 46 vertically.

이하 첨부된 도면을 참조하여 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 본 발명의 기술적 사상을 용이하게 실시할 수 있도록 상세하게 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the technical idea of the present invention.

도 1은 본 발명의 전체 공법의 흐름을 도시한 단면도, 도 2는 본 발명의 맨홀분리단계를 도시한 상태도, 도 3a 내지 3c는 본 발명의 수평조절단계를 도시한 상태도, 도 4a 또는 4b는 본 발명의 맨홀프레임고정단계를 도시한 상태도로서,1 is a cross-sectional view showing the flow of the entire method of the present invention, Figure 2 is a state diagram showing a manhole separation step of the present invention, Figures 3a to 3c is a state diagram showing a horizontal adjustment step of the present invention, Figure 4a or 4b is a state diagram showing a manhole frame fixing step of the present invention,

먼저 맨홀분리단계(S1)에서는 도 2에 도시된 바와 같이 맨홀(100) 외곽의 노면을 커터기(10)로 절단하고, 절단된 부분의 아스팔트는 착암기(20)로 굴착한 후,노면에 고정되어져 있는 맨홀 커버(30')와 맨홀 프레임(30)을 분리해 낸다.First, in the manhole separation step (S1), as shown in FIG. The manhole cover 30 'and the manhole frame 30 are separated.

수평조절단계(S2)에서는 먼저 도 3a에 도시된 바와 같이 맨홀프레임(30)의 중심으로 수평조절장치(40)를 장착하는데, 상기 수평조절장치(40)는 도 3a에 도시된 바와 같이 중심 고정편(41)의 외주연으로 3개의 유압 실린더(42)를 120°간격으로 이격 장착하고, 상기 유압 실린더(42)의 피스톤 로드(43) 종단에는 "ㄱ"자 형상의 조절대(44)를 장착하는데, 수평으로 형성된 조절대(44)의 상면은 노면에 걸쳐 수평을 유지하기 위한 수평유지부(45)로 형성되고, 수직으로 형성된 조절대(44) 측면은 맨홀프레임(30)의 내주면을 압착하기 위한 압착부(46)로 형성된 것이다.In the horizontal adjustment step (S2), first, as shown in FIG. 3a, the horizontal adjusting device 40 is mounted to the center of the manhole frame 30, and the horizontal adjusting device 40 is fixed to the center as shown in FIG. 3a. Three hydraulic cylinders 42 are mounted at 120 ° apart from the outer periphery of the piece 41, and the piston rod 43 of the hydraulic cylinder 42 has a " a " Mounting, the upper surface of the horizontally formed adjuster 44 is formed of a horizontal holding portion 45 for maintaining a horizontal level over the road surface, the vertically formed adjuster 44 side is the inner circumferential surface of the manhole frame 30 It is formed of a pressing portion 46 for pressing.

상기와 같이 형성된 수평조절장치(40)의 장착시 유체유입구(47)로 유입된 유체의 유압에 의해 각 피스톤 로드(43)가 전진하게 되고, 상기 전진을 통해 피스톤 로드(43) 종단에 용착된 조절대(44)의 압착부(46)는 맨홀프레임(30)의 상면과 내주면을 압착하게 되며, 그 압착력에 의해 맨홀프레임(30)이 지지된다.When the horizontal adjustment device 40 formed as described above, each piston rod 43 is advanced by the hydraulic pressure of the fluid introduced into the fluid inlet 47, and is welded to the end of the piston rod 43 through the advance The pressing portion 46 of the adjuster 44 is to press the upper surface and the inner peripheral surface of the manhole frame 30, the manhole frame 30 is supported by the pressing force.

그리고 상기와 같이 수평조절장치(40)에 의해 지지되는 맨홀프레임(30)은 도 3b에 도시된 바와 같이 맨홀구(50) 상측으로 안착되는데, 이때 조절대(44)의 수평유지부(45)가 길게 형성되어져 있어 노면에 걸쳐지게 되고, 맨홀프레임(30)은 별도의 지지장치없이 맨홀구(50) 상측에 떠있게 된다. 그리고 상기 조절대(44)가 노면과 접면되어져 있어 맨홀프레임(30)이 자동적으로 노면과 수평을 유지할 수 있게 되는 것이다.And the manhole frame 30 supported by the horizontal adjustment device 40 as described above is seated on the upper side of the manhole hole 50, as shown in Figure 3b, wherein the horizontal holding portion 45 of the adjuster 44 Is formed long and is spread over the road surface, the manhole frame 30 is floating above the manhole hole 50 without a separate support device. And the adjuster 44 is in contact with the road surface so that the manhole frame 30 can be automatically level with the road surface.

맨홀프레임 고정단계(S3)에서는 노면과 수평을 유지하고 있는 맨홀프레임(30)의 저면, 즉 맨홀 프레임(30)과 맨홀구(50) 외주연 사이에 도 4a에도시된 바와 같이 파이프나 벽돌 등의 거치대(60)을 장착하고, 맨홀구(50) 내부에는 모르타르가 맨홀구(50) 내부로 유입되지 않게 거푸집(70)을 설치한 후, 맨홀프레임(30)과 노면 사이의 굴착된 부분에 도 4b에 도시된 바와 같이 모르타르를 타설하는데, 타설된 모르타르는 통상의 스크래퍼 등을 통해 포설 및 다짐한다.In the manhole frame fixing step (S3), as shown in FIG. 4A, a pipe or a brick is disposed between the bottom of the manhole frame 30 that is level with the road surface, that is, between the manhole frame 30 and the outer periphery of the manhole hole 50. Mount the cradle 60, the manhole hole (50) inside the mortar is installed so as not to flow into the manhole hole (50), and then installed in the excavated portion between the manhole frame 30 and the road surface As shown in FIG. 4B, mortar is poured, and the poured mortar is laid and compacted through a conventional scraper or the like.

모르타르의 포설 및 다짐 후에는 수평조절장치(40)의 유체유출구(47')를 통해 실린더(42)에 삽입된 유체를 유출시키고, 맨홀프레임(30)에서 수평조절장치(40)를 해제한 후, 맨홀프레임(30) 상단에 맨홀커버(30')를 장착한다.After laying and compacting the mortar, the fluid inserted into the cylinder 42 is discharged through the fluid outlet 47 'of the leveling device 40, and the leveling device 40 is released from the manhole frame 30. The manhole cover 30 'is mounted on the top of the manhole frame 30.

상기와 같이 모르타르가 타설된 맨홀프레임(30)의 외곽은 모르타르의 특성에 의해 단시간내에 경화되어 교통의 흐름을 재개할 수 있게 된다.As described above, the outer portion of the manhole frame 30 in which mortar is poured is cured in a short time by the characteristics of the mortar, so that the flow of traffic can be resumed.

이와같이 본 발명은 맨홀프레임에 수평조절장치를 장착하여 경사진 노면에서도 노면과 수평을 자동적으로 유지할 수 있게 함으로써, 맨홀의 일측이 노면에 돌출되거나 함몰되는 것을 방지할 수 있고, 그로 인하여 대형사고 등을 예방할 수 있으며, 수평조절장치의 장착과 작동이 간단하여 맨홀 보수작업을 용이하게 수행할 수 있을 뿐만 아니라, 작업 시간을 최소화할 수 있는데 그 효과가 있다.Thus, the present invention is equipped with a horizontal adjustment device to the manhole frame to automatically maintain the road surface and even on the inclined road surface, it is possible to prevent one side of the manhole from protruding or sinking on the road surface, thereby preventing a large accident It can be prevented, and the installation and operation of the leveling device is simple, so that the manhole maintenance can be easily performed, and the working time can be minimized.

Claims (2)

통상의 맨홀보수공법에 있어서, 맨홀(100) 외곽의 아스팔트를 커터기(10)와 착암기(20)로 굴착하여 맨홀커버(30')와 맨홀프레임(30)을 분리해 내는 맨홀분리단계(S1)와; 분리된 상기 맨홀(100)의 맨홀프레임(30) 내주연 중심으로는 다수개의 유압실런더(42)로 형성된 수평조절장치(40)를 장착한 후, 유압실린더(42)의 피스톤 로드(43) 종단에 형성되어 있는 조절대(44)로 맨홀프레임(30) 내주면을 가압하고, 가압된 상태의 맨홀프레임(30)은 맨홀구(50) 상측으로 위치시키되, 수평조절장치(40)의 조절대(44)가 노면에 걸치게 하여 맨홀프레임(30)이 노면과 수평을 유지하도록 하는 수평조절단계(S2)와; 맨홀프레임(30)과 맨홀구(50) 사이의 공간에는 거치대(60)를 장착하고, 맨홀구(50) 내부에는 거푸집(70)을 장착한 후, 맨홀구(50) 외곽의 굴착부분에 모르타르를 타설하고 포설 및 다짐하는 맨홀프레임 고정단계(S3);를 포함하여 형성됨을 특징으로 하는 맨홀보수공법.In the conventional manhole repair method, the manhole separation step (S1) for digging the asphalt outside the manhole 100 with the cutter 10 and the rock drill 20 to separate the manhole cover 30 'and the manhole frame 30 Wow; After mounting the horizontal adjusting device 40 formed of a plurality of hydraulic cylinders 42 to the inner circumferential center of the manhole frame 30 of the separated manhole 100, the piston rod 43 of the hydraulic cylinder 42 The manhole frame 30 presses the inner circumferential surface with the adjuster 44 formed at the end, and the manhole frame 30 in the pressurized state is positioned above the manhole hole 50, but the adjuster of the horizontal adjusting device 40 is Horizontal adjustment step (S2) so that the 44 over the road surface so that the manhole frame 30 is level with the road surface; Mount the cradle 60 in the space between the manhole frame 30 and the manhole hole 50, the formwork 70 is mounted in the manhole hole 50, and then mortar on the excavated portion of the manhole hole 50 Manhole repair method, characterized in that formed; including; and the manhole frame fixing step of placing and compacting (S3). 통상의 수평조절장치(40)에 있어서, 중심의 고정편(41) 외주연으로 3개의 유압실린더(42)가 소정각도로 이격 용착되어 있고, 상기 유압실린더(42)의 상측에는 유체유입구(47)와 유체유출구(47')가 형성되어 있으며, 상기 유압실린더(42)의 각 피스톤 로드(43) 종단에는 "ㄱ"자 형상의 조절대(44)가 용착되어져 있되, 상기 각 조절대(44)의 수평으로된 상측 수평유지부(45)는 수직으로된 일측 압착부(46)보다길게 형성되어져 있음을 특징으로 하는 맨홀보수공법에 사용되는 수평조절장치.In the usual horizontal control device 40, three hydraulic cylinders 42 are welded at predetermined angles on the outer circumference of the fixed piece 41 in the center, and the fluid inlet 47 is located above the hydraulic cylinders 42. ) And the fluid outlet 47 ', and the end of each piston rod 43 of the hydraulic cylinder 42 is welded to the end of the "44" shaped member 44, each of the adjusters 44 Horizontal leveling device used in the manhole repair method, characterized in that the horizontal horizontal upper portion 45 is formed longer than the vertical pressing portion 46 of the vertical.
KR1020030084901A 2003-11-27 2003-11-27 Method of construction for manhole repair and level control device using the method of construction KR20040005722A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100885659B1 (en) * 2007-02-06 2009-02-25 이윤영 Manhole repair method
KR100905728B1 (en) * 2009-02-26 2009-07-01 이동균 Manhole repairing apparutus and manhole repairing method using the same
KR100919492B1 (en) * 2007-12-24 2009-09-28 삼서공업 주식회사 Pressurization device for manhole

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100885659B1 (en) * 2007-02-06 2009-02-25 이윤영 Manhole repair method
KR100919492B1 (en) * 2007-12-24 2009-09-28 삼서공업 주식회사 Pressurization device for manhole
KR100905728B1 (en) * 2009-02-26 2009-07-01 이동균 Manhole repairing apparutus and manhole repairing method using the same

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