KR200305659Y1 - manpower tunnel propeller for a concrete pipe - Google Patents
manpower tunnel propeller for a concrete pipe Download PDFInfo
- Publication number
- KR200305659Y1 KR200305659Y1 KR20-2002-0032034U KR20020032034U KR200305659Y1 KR 200305659 Y1 KR200305659 Y1 KR 200305659Y1 KR 20020032034 U KR20020032034 U KR 20020032034U KR 200305659 Y1 KR200305659 Y1 KR 200305659Y1
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- South Korea
- Prior art keywords
- tunnel
- propulsion member
- propeller
- concrete pipe
- concrete
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/04—Driving tunnels or galleries through loose materials; Apparatus therefor not otherwise provided for
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
Abstract
본 고안은 콘크리트관용 인력터널추진기에 관한 것이다.The present invention relates to a manpower tunnel propeller for concrete pipes.
본 고안은 지중에 터널을 굴착하면서 콘크리트관을 시공하기 위하여 원통형의 관체 내부에 작업실이 구비된 공지의 터널추진기에 있어서, 상기 터널추진기(T)를 전방추진부재(T1)와 후방추진부재(T2)로 각각 구성하며, 전방추진기(T1)의 후방측에 출입구(1)와 개폐문(2)을 장치하고, 개폐문(2)에 차수용그라우팅주입구(3)를 형성하며, 후방추진부재(T2)의 관체외부와 관통되도록 형성된 유출공(12)에 주입관 (13)을 연결하며, 전방추진부재(T1)와 후방추진부재(T2)의 연결부위(h)가 유압실린더 (24)의 작동에 의하여 유동되도록 장치하여 구성된 것으로서, 작업능률이 향상되고 지반 붕괴를 방지할 수 있는 유익한 고안인 것이다.The present invention is a well-known tunnel propeller equipped with a working room inside a cylindrical tube to construct a concrete pipe while excavating a tunnel in the ground, the tunnel propeller (T) to the front propulsion member (T1) and the rear propulsion member (T2) And each of which comprises an entrance (1) and an opening / closing door (2) on the rear side of the front propeller (T1), and forms a grouting injection hole (3) for the opening / closing door (2), and a rear propulsion member (T2). The injection pipe 13 is connected to the outflow hole 12 formed so as to penetrate the outside of the tube, and the connection portion h of the front propulsion member T1 and the rear propulsion member T2 is connected to the operation of the hydraulic cylinder 24. It is configured to flow by the device, it is an advantageous design that can improve the work efficiency and prevent the ground collapse.
Description
본 고안은 지중에 콘크리트관을 시공하기 위한 장치에 관한 것으로, 특히 터널추진기를 이용하여 콘크리트관을 매입 시공하므로 작업능률이 향상되고 시공 후 지반 붕괴를 방지할 수 있도록 한 콘크리트관용 인력터널추진기에 관한 것이다.The present invention relates to a device for constructing concrete pipes in the ground, and in particular, to a concrete pipe manpower tunnel propeller that can improve work efficiency and prevent ground collapse after construction by constructing concrete pipes using tunnel propellers. will be.
일반적으로, 상하수관이나 전선관등의 용도로 사용하기 위하여 지면으로 부터 일정깊이에 터널을 굴착하고 콘크리트관을 매설시공하는 방법이 통용되어 왔다.In general, in order to use for water and sewage pipes or conduits, a method of digging a tunnel at a certain depth from the ground and laying a concrete pipe has been commonly used.
상기한 터널을 굴착하기 위한 방법으로서 터널보링머신에 의한 방법, 실드공법, 세미실드공법등이 있으나, 굴착거리가 짧은 경우나, 상기 공법을 실행하기에 작업여건이 적합하지 않은 경우에는 강관추진 공법이 이용되었다.As a method for excavating the tunnel, a tunnel boring machine method, a shielding method, a semi-shielding method, and the like, but when the excavation distance is short or when the working conditions are not suitable to carry out the method, the steel pipe propulsion method This was used.
상기 강관추진 공법을 이용하여 콘크리트관을 지중에 시공하는 종래의 방법은, 도3에 도시된 바와같이, 작업자가 개인굴착 장비를 이용하여 터널을 굴착하여 굴착된 터널에 원통형의 강관을 압입시켜 터널의 내부 공간을 확보하고, 외부에서 강관을 압입시키면, 터널에 진입되어 있던 강관이 전진되고 새로운 강관이 유입되는 방식을 반복적으로 실행하므로서 강관이 길이 방향으로 연장되면 내부에 콘크리트관을 시공하는 것이다.In the conventional method of constructing a concrete pipe in the ground using the steel pipe propulsion method, as shown in FIG. 3, the operator presses a cylindrical steel pipe into the excavated tunnel by excavating the tunnel by using a personal excavation equipment. To secure the internal space of the, when the steel pipe is pushed in from the outside, the steel pipe that has entered the tunnel is advanced and the new steel pipe is introduced repeatedly while the steel pipe extends in the longitudinal direction to construct a concrete pipe inside.
그러나, 이러한 종래의 시공방법은 작업공정이 많고 작업시간이 지연되어 작업이 비효율적이며, 지반이 붕괴되는 등 다음과 같은 문제가 제기 되었다.However, such a conventional construction method has a lot of work processes and delayed working time, the work is inefficient, the ground is collapsed, the following problems have been raised.
첫째, 일차적으로 강관을 터널에 설치한 후에 콘크리트관을 재차 시공하여야 되기 때문 이중작업을 하게 되며, 이에 따른 공사기간 지연과 공사비용 상승의 문제가 있었다.First, since the concrete pipes must be reconstructed after the steel pipes are installed in the tunnels, the double work is performed, and there is a problem of delay in construction period and increase in construction cost.
둘째, 터널이 굴착된 상태에서 강관을 압입하며, 이때 터널의 내주면과 강관의 외주면사이에 공간부가 발생한다. 이러한 공간부는 지면에서 하중이 가해지면, 침하되어 도로붕괴 사고의 원인이 되었다.Secondly, the steel pipe is press-fitted when the tunnel is excavated, and a space portion is generated between the inner circumferential surface of the tunnel and the outer circumferential surface of the steel pipe. When the space is loaded from the ground, these spaces are settled, causing road collapse.
셋째, 상기 강관의 각각 연결부를 용접하여야 되기 때문에 이에 따른 작업공정 이 많아지고 작업시간의 지연과 인력 손실이 따랐으며, 더욱이, 강관의 연결이 직선으로 이루어지는 경우에만 용접이 가능하므로 터널시공의 방향이 곡선으로 진행되는 경우에는 작업이 불가능하였다.Third, since the connection parts of the steel pipes have to be welded, the work process is increased according to this, and the work time is delayed and the manpower loss is followed. Moreover, since the welding is possible only when the connection of the steel pipes is straight, the direction of tunnel construction is Work was not possible in the case of a curve.
본 고안은 상기한 문제를 해결하기 위하여, 연구개발된 것으로서, 콘크리트관을 지중에 시공함에 있어 종래와 같이 강관을 미리 설치하는 일없이 터널을 굴착하면서 콘크리트관을 직접시공하므로 작업능률이 향상되도록 하는 데 그 기술적 과제가 있다.The present invention has been researched and developed in order to solve the above problems, and when constructing concrete pipes in the ground, it is possible to improve the work efficiency by constructing concrete pipes directly while digging tunnels without installing steel pipes as before. There are technical challenges.
본 고안의 다른 기술적 과제는 시공할때에 콘크리트관의 외주면에 특수활재를 주입하므로서 침하에 따른 지반 붕괴가 방지되도록 하는 데 있다.Another technical problem of the present invention is to prevent ground collapse due to settlement by injecting a special active material into the outer peripheral surface of the concrete pipe during construction.
본 고안의 다른 기술적과제는 콘크리트관의 시공방향이 직선 뿐 아니라 곡선으로 이루어지는 경우에도 쉽게 시공할 수 있도록 하는 데 있다.Another technical problem of the present invention is to make it easy to construct even when the construction direction of the concrete pipe is not only straight but curved.
도 1은 본 고안의 시공상태를 보인 측면도.1 is a side view showing a construction state of the present invention.
도 2는 본 고안의 중요한 부분을 보인 확대단면도.Figure 2 is an enlarged cross-sectional view showing an important part of the present invention.
도 3은 종래의 시공상태를 보인 측면도.Figure 3 is a side view showing a conventional construction state.
* 도면의 주요부분에 대한 부호설명 ** Explanation of Signs of Major Parts of Drawings *
T : 터널추진기 T1 : 전방추진부재T: Tunnel propeller T1: Front propulsion member
T2 : 후방추진부재 1 : 출입구T2: rear propulsion member 1: entrance
2 : 개폐문 3 : 차수용그라우팅주입구2: opening and closing door 3: car grouting inlet
12 : 유출공 13 : 주입관12: outlet hole 13: injection tube
h : 연결부위 24 : 유압실린더h: Connecting part 24: Hydraulic cylinder
본 고안은 지중에 터널을 굴착하면서 콘크리트관을 시공하기 위하여, 원통형의 관체 내부에 작업실이 구비된 공지의 터널추진기에 있어서, 상기 터널추진기를 전방 추진부재와 후방추진부재로 각각 구성하여 전방추진부재의 후방측에 개폐문을 장치하고 개폐문의 중앙측에 차수용그라우팅주입구를 형성하고 후방 추진부재에 주입관을 장치하며, 전방추진부재와 후방추진부재의 연결부위에 실린더를 장치하여 유압펌프에 의하여 상기 연결부위가 유동되도록 장치한 것이다.The present invention is a well-known tunnel propeller equipped with a working room inside a cylindrical tube in order to construct a concrete pipe while excavating a tunnel in the ground, wherein the tunnel propeller is composed of the front propulsion member and the rear propulsion member, respectively, the front propulsion member The opening and closing door is provided on the rear side of the door, and the grouting inlet for the order is formed on the center side of the opening and closing door, and the injection pipe is installed on the rear propulsion member, and the cylinder is installed on the connection part of the front propulsion member and the rear propulsion member by the hydraulic pump. The connection part is designed to flow.
이하, 본 고안의 구성 및 이에 따른 작용을 첨부된 도면에 의하여 상세히 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings, the configuration and operation of the present invention in detail as follows.
도 1은 본 고안의 시공상태를 보인 측면도.1 is a side view showing a construction state of the present invention.
도 2는 본 고안의 중요한 부분을 보인 확대 단면도이다.2 is an enlarged cross-sectional view showing an important part of the present invention.
본 고안은 도1과 도2에 도시된 바와같이, 내구성과 강도가 큰 금속재로서 원통형의 터널추진기(T)를 구성하며, 터널추진기(T)는 전후에 전방추진부재(T1)와 후방추진부재(T2)를 각가 유동되게 결합하여 구성한다.1 and 2, the present invention constitutes a cylindrical tunnel propeller T as a metal material having high durability and strength, and the tunnel propeller T has a front propulsion member T1 and a rear propulsion member before and after. (T2) is composed by combining the flow angle.
상기 전방추진부재(T1)는 관체(4) 내부에 작업실(a)을 구비하고 후방측에 출입구(1)를 형성하여 출입구(1)를 여닫을 수 있는 개폐문짝(2)을 장치하며 개폐문짝 (2)의 중앙부에 차수용그라우팅주입구(3)를 설치한다.The front propulsion member (T1) is provided with a working room (a) inside the tubular body (4) and to form an opening (1) on the rear side to install the opening and closing door (2) that can open and close the door (1) opening and closing door ( Install the grouting injection hole (3) in the center of 2).
상기 후방추진부재(T2)는 관체(11)에 내외부가 관통되는 유출공(12)을 형성하여 주입관(13)을 유출공(12)에 연결한다.The rear propulsion member T2 forms an outlet hole 12 penetrating the inside and the outside of the tube body 11 to connect the injection tube 13 to the outlet hole 12.
그리고 상기 전방추진부재(T1)의 후방 외주연부에 연결플랜지(21)를 형성하고 상기 후방추진부재(T2)의 전방 외주연부에 연결단부(22)를 형성하여서, 연결단부(22)의 외주연부에 연결플랜지(21)가 위치되도록 결합하고 결합한 틈새에 패킹 (23)을 형성하며 후방추진기(21)의 전방측에 연결된 전방추진부재(T1)가 연결부위 (h)를 지점으로 유동되도록 장치한다.In addition, the connecting flange 21 is formed at the rear outer periphery of the front propulsion member T1, and the connecting end 22 is formed at the front outer periphery of the rear propulsion member T2, so that the outer periphery of the connecting end 22 is formed. The coupling flange 21 is located in the coupling to form a packing (23) in the combined gap and the front propulsion member (T1) connected to the front side of the rear propeller 21 is installed so that the connection portion (h) flows to the point. .
또한, 전방추진부재(T1)의 관체(4) 내부에 유입실린더(24)를 장치하여 유압실린더(24)의 피스톤(24a)이 후방추진부재(T2)의 전방단부(22a)에 밀착지지되도록 장치하며, 이러한 유압실린더(24)는 상하 좌우에 각각 장치한다.In addition, the inlet cylinder 24 is installed inside the tubular body 4 of the front propulsion member T1 so that the piston 24a of the hydraulic cylinder 24 is closely attached to the front end 22a of the rear propulsion member T2. The hydraulic cylinder 24 is installed on the top, bottom, left and right, respectively.
그리고 상기 후방추진부재(T2)의 내부에 유압펌프(25)를 장치하고 분배기(26)를 유압펌프(25)의 출구측에 장치하여 분배기(26)에 연결된 각각의 유압호스 (27)를 상기 유압실린더(24)에 연결장치한다.Then, the hydraulic pump 25 is installed inside the rear propulsion member T2 and the distributor 26 is installed at the outlet side of the hydraulic pump 25 to connect each hydraulic hose 27 connected to the distributor 26. It is connected to the hydraulic cylinder (24).
이와같이 구성된 본 고안은 수직터널을 굴착하여 작업공간이 확보된 상태에서 좌우 길이방향으로 터널을 굴삭하는 것이며, 작업자가 개인 장비인 굴착기를 이용하여 터널을 굴착하는 것이다.The present invention configured as described above is to excavate the tunnel in the longitudinal direction in the state where the working space is secured by excavating the vertical tunnel, and the operator excavates the tunnel by using an excavator which is a personal equipment.
터널의 진입부가 굴착되면, 진입부에 터널추진기(T)를 설치하며, 계속 터널이 굴착됨에 따라 터널추진기(T)를 전진시키고 터널추진기(T)의 후방측에 콘크리트관(C)을 진입시키고 재차 새로운 콘크리트관(C)을 진입시키는 방법이 반복적으로 실행되므로서 굴착된 터널내에 콘크리트관(C)이 시공되는 것이다.When the entrance part of the tunnel is excavated, the tunnel propeller T is installed at the entrance part. As the tunnel continues to be excavated, the tunnel propeller T is advanced and the concrete pipe C is introduced into the rear side of the tunnel propeller T. The concrete pipe (C) is constructed in the excavated tunnel by repeating the method of entering a new concrete pipe (C) again.
이러한 콘크리트관(C)의 시공방법은 공지된 기술에 의한 것이며, 본원 고안의 기술적 구성에 의한 작용적 특징은 다음과 같다.The construction method of such a concrete pipe (C) is by a known technique, the functional characteristics by the technical configuration of the present invention is as follows.
터널추진기(T)가 설치된 상태에서 관체(4) 내부의 작업실(a)에서 작업자가 굴착기로써 굴착작업을 하게되며,In the working room (a) of the pipe 4 in the state in which the tunnel propeller T is installed, the worker performs excavation work as an excavator,
이때, 굴착된 지중이 붕괴되거나 지하수가 유출될 경우, 작업자가 작업실(a)로 부터 나온후에 개폐문짝(2)을 닫아 출입구(1)를 차단하며, 차수용그라우팅주입구(3)를 통하여 그라우팅작업을 실시하거나 유출된 지하수를 배출시키는 것이다.At this time, when the excavated ground collapses or the groundwater flows out, after the worker exits from the working room (a), closes the opening and closing door (2) to block the doorway (1), grouting work through the grouting inlet for the order (3) Or drain the groundwater.
또한, 지하수의 유출량이 많지 않을 경우에는 작업실(a)에서 굴착작업이 진행됨과 동시에 차수용그라우팅주입구(3)를 통하여 배수작업을 하므로서 작업능률을 상승시킬 수 있다.In addition, when the outflow of the groundwater is not much, the excavation work is carried out in the working room (a) and at the same time drainage work through the order grouting inlet (3) can increase the work efficiency.
그리고, 터널이 굴착방향이 직선상으로 이루어지지 않고 곡선방향으로 진행되어야 할 경우에는 각각의 유압실린더(24)를 작동시켜 전방추진부재(T1)의 방향을 조절하는 것이다.In addition, when the tunnel is to be carried out in a curved direction rather than a straight line excavation direction by operating the respective hydraulic cylinders 24 to adjust the direction of the front propulsion member (T1).
즉, 작업자가 전방추진부재(T1)의 진행방향을 조절하고자 할 경우, 원하는 위치의 유압실린더(24)가 작동되도록 분배기(26)의 조작레버(26a)를 조작시킨 후에 유압펌프(25)를 작동시키면, 유압펌프(25)에서 발생된 유압이 선택되어진 유압실린더(24)를 작동시키게 되며, 작동된 유압실린더(24)의 피스톤(24a)이 인장됨에 따라, 연결부위(h)의 틈새가 벌어지면서 전방추진부재(T1)의 전체방향이 작동된 유압실린더(24)의 타측방향으로 전환된다.That is, when the operator wants to adjust the traveling direction of the front propulsion member T1, the hydraulic pump 25 is operated after operating the operation lever 26a of the distributor 26 so that the hydraulic cylinder 24 at the desired position is operated. When activated, the hydraulic pressure generated in the hydraulic pump 25 operates the selected hydraulic cylinder 24, and as the piston 24a of the operated hydraulic cylinder 24 is tensioned, the gap of the connection portion h is increased. As it opens, the entire direction of the front propulsion member T1 is switched to the other direction of the operated hydraulic cylinder 24.
상기 전방추진부재(T1)의 방향 조절은 작은 각도로 이루어지면서, 여러번의 방향조절을 하게 되므로 비교적 완만한 곡선 방향으로 터널의 진행 및 콘크리트관의 시공이 이루어진다.The direction control of the front propulsion member (T1) is made at a small angle, because the direction is controlled several times, the progress of the tunnel and the construction of the concrete pipe is made in a relatively gentle curve direction.
굴착된 상기 터널은 콘크리트관(C)이 유입되기 위하여, 콘크리트관(C)의 외경보다 크게 굴착되고 터널 내주면이 매끈한 상태가 아니므로 터널에 콘크리트관 (C)이 시공된 상태에서 콘크리트관(C)의 외주면과 터널 내주면 사이에 공간이 형성된다.The excavated tunnel is excavated larger than the outer diameter of the concrete pipe (C) in order to enter the concrete pipe (C), and the inner circumferential surface of the tunnel is not smooth, so that the concrete pipe (C) in the tunnel construction state A space is formed between the outer circumferential surface of the c) and the inner circumferential surface of the tunnel.
때문에 이러한 공간을 젤리 형태의 특후활재로써 충진시키기 위하여, 상기 터널추진기(T)의 후방추진부재(T2)가 터널내에 위치된 상태에서, 주입관(13)을 통하여 외부에서 공급되는 특수활재가 유출공(12)을 통하여 후방추진부재(T2)의 외측으로 유출되면서 공간이 메꿔지는 것이다.Therefore, in order to fill this space with a jelly-shaped thickener, in the state where the rear propulsion member T2 of the tunnel propeller T is located in the tunnel, the special active material supplied from the outside through the injection pipe 13 flows out. Outflow of the rear propulsion member (T2) through the ball 12 is to fill the space.
후방추진부재(T2)는 터널내로 진입된 후 재차 특수활재가 주입되고 원위치에콘크리트관(C)이 진입되어지는 작업이 반복적으로 실행되므로서 연결된 콘크리트관 (C)의 외주부에 특수활재가 충진되는 것이다.After the rear propulsion member T2 enters the tunnel, the special active material is injected again, and the special active material is filled in the outer circumference of the connected concrete pipe (C) by repeatedly performing the operation of the concrete pipe (C) entering the original position. will be.
상기한 본 고안은 터널의 굴착과 터널추진기의 전진과 새로운 콘크리트관의 진입이 계속적으로 실행되므로서, 터널내에 콘크리트관으로 된 관로가 시공되는 것이다.According to the present invention, the excavation of the tunnel, the advancement of the tunnel propeller, and the entry of the new concrete pipe are continuously executed, so that the pipeline is made of concrete pipes in the tunnel.
그리고 콘크리트관(C)의 시공이 완료되면, 콘크리트관(C)에 형성된 유출공을 통하여 콘크리트관(C)의 외주면에 몰타르를 충진하는 것이다.And when the construction of the concrete pipe (C) is completed, filling the mortar on the outer peripheral surface of the concrete pipe (C) through the outflow hole formed in the concrete pipe (C).
상기한 바와같이 본 고안은 터널을 굴착하면서 콘크리트관을 시공할때에 종래와 같이 미리 강관을 설치하는 일 없이 콘크리트관을 터널에 직접 시공하므로서 작업시간이 단축되고 인력이 최소화되어 작업능률을 극대화할 수 있는 것이다.As described above, the present invention constructs the concrete pipe directly in the tunnel without installing the steel pipe in advance as before when constructing the concrete pipe while digging the tunnel, thereby reducing work time and minimizing manpower to maximize work efficiency. It can be.
또한, 시공중 콘크리트관이 외주면에 특수활재가 충진되므로 지면에서 가해지는 충격이나 하중에 의하여 지반이 침하되는 일없이 안전성이 보장될 뿐 아니라, 각각의 콘크리트관이 연결된 부위에 누수가 발생될 우려가 없는 것이다.In addition, since the concrete tube is filled with special active material on the outer circumferential surface during construction, not only the ground is subsided by the impact or load applied from the ground, but also the safety is ensured, and there is a possibility that leakage occurs at the site where each concrete tube is connected. It is not there.
또한, 터널추진기의 진행방향을 조절할 수 있기 때문에 콘크리트관의 시공을 일직선상을 물론 곡선상으로도 할 수 있으므로, 터널굴착중 암벽이나 매설물 등을 우회해가면서 능률적으로 작업할 수 있을 뿐 아니라, 목표지점까지 최단거리로 시공할 수 있는 것이다.In addition, since the direction of tunnel propulsion can be adjusted, the construction of concrete pipes can be done in a straight line as well as in a curved line. Therefore, it is possible to efficiently work while bypassing rock walls and buried materials during tunnel excavation. It can be constructed in the shortest distance to the point.
상기한 본 고안은 기존의 콘크리트관 시공문제를 간단한 구조로 개선하여 모든 상하수관이나 전선관 등의 시공을 능률적으로 할 수 있므며, 작업환경이 좋지않은 곳에서도 적용이 가능할 뿐 아니라, 대형 터널공사에도 적용하여 실용화 할 수 있는 유익한 고안인 것이다.The above-described design improves the existing concrete pipe construction problem with a simple structure, so that all the water and sewage pipes and conduits can be efficiently installed, and can be applied even in a poor working environment. It is a useful design that can be applied and practical.
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| Application Number | Priority Date | Filing Date | Title |
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| KR20-2002-0032034U KR200305659Y1 (en) | 2002-10-28 | 2002-10-28 | manpower tunnel propeller for a concrete pipe |
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| Application Number | Priority Date | Filing Date | Title |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040036469A (en) * | 2002-10-26 | 2004-04-30 | 김명수 | manpower tunnel propeller for a concrete pipe |
| KR20180067826A (en) | 2016-12-13 | 2018-06-21 | 강릉건설 주식회사 | excavator using propulsion of caisson, and excavation method using the same |
| KR20180070079A (en) | 2016-12-16 | 2018-06-26 | 강릉건설 주식회사 | excavator using propulsion of assembled front tip |
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2002
- 2002-10-28 KR KR20-2002-0032034U patent/KR200305659Y1/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040036469A (en) * | 2002-10-26 | 2004-04-30 | 김명수 | manpower tunnel propeller for a concrete pipe |
| KR20180067826A (en) | 2016-12-13 | 2018-06-21 | 강릉건설 주식회사 | excavator using propulsion of caisson, and excavation method using the same |
| KR20180070079A (en) | 2016-12-16 | 2018-06-26 | 강릉건설 주식회사 | excavator using propulsion of assembled front tip |
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