KR100729567B1 - Vacuum consolidation dehydration promotion method and its drainage pipe - Google Patents

Vacuum consolidation dehydration promotion method and its drainage pipe Download PDF

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KR100729567B1
KR100729567B1 KR1020060070181A KR20060070181A KR100729567B1 KR 100729567 B1 KR100729567 B1 KR 100729567B1 KR 1020060070181 A KR1020060070181 A KR 1020060070181A KR 20060070181 A KR20060070181 A KR 20060070181A KR 100729567 B1 KR100729567 B1 KR 100729567B1
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drainage
drain pipe
vacuum
drain
promotion method
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Korean (ko)
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윤윤모
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주식회사 대한아이엠
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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
    • E02D3/02—Improving by compacting
    • E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2200/00—Geometrical or physical properties
    • E02D2200/16—Shapes

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)

Abstract

본 발명은 진공압밀 탈수촉진 공법 및 그 배수파이프에 관한 것으로 상세하게는 압밀 촉진을 위한 배수재의 내측에 진공압을 이용하여 지하수를 강제 흡입하여 배수하는 드레인 파이프를 더 설치하여 단시간에 배수재의 내측으로 유입된 지하수를 배수할 수 있도록 한 진공압밀 탈수촉진 공법 및 그 배수파이프에 관한 것인바, 본 발명의 진공압밀 탈수촉진 공법용 배수파이프는 진공펌프와 배수재의 사이에 설치되는 배수관 연결구과 연결되어 수직으로 매립되되 다수의 통공을 형성한 원형의 배수재가 연결 설치되며 배수재의 표면에 부직포가 피착되어 필터층을 형성하여 이루어진 진공압밀 탈수촉진 공법용 배수파이프에 있어서, 상기 진공펌프와 배수재의 사이에 설치되는 배수관 연결구와 연결 구성되며 배수재의 내측에 인입 설치되는 드레인 파이프를 더 설치하고 점토층의 최상부면보다 아래 되는 위치의 배수재 내측으로 패킹수단이 설치되며 배수재의 하측 끝단면보다 내측에 설치된 드레인 파이프의 하측 끝단면이 조금 상부에 올려져 형성되어 이루어진 것에 그 특징이 있다.The present invention relates to a vacuum consolidation dehydration promotion method and its drainage pipe, and more specifically, by installing a drain pipe for forcibly suctioning and draining groundwater using vacuum pressure inside the drainage material for promoting consolidation, and then into the drainage material in a short time. It relates to a vacuum condensation dehydration promotion method and the drainage pipe for draining the groundwater flow, the drainage pipe for vacuum condensation dehydration promotion method of the present invention is connected to the drain pipe connection installed between the vacuum pump and the drainage vertically In the drain pipe for vacuum condensation dehydration promotion method, which is buried but formed with a plurality of through-holes and a nonwoven fabric is deposited on the surface of the drain material to form a filter layer, the drain pipe is installed between the vacuum pump and the drain material. Drain that is connected to the connector and is installed in the drain It is characterized by the fact that the packing means is installed inside the drainage material at the position below the top surface of the clay layer, and the lower end surface of the drain pipe installed on the inner side of the drainage material is raised a little above the top surface of the clay layer. .

Description

진공압밀 탈수촉진 공법 및 그 배수파이프{Method of construction for promoting drain by vacuum and pressure, and drain pipe there of}Method of construction for promoting drain by vacuum and pressure, and drain pipe there of}

도 1은 종래의 진공탈수 압밀촉진 공법의 구조를 보여주는 예시도.1 is an exemplary view showing a structure of a conventional vacuum dehydration consolidation promotion method.

도 2는 본 발명의 기술이 적용된 압밀 촉진을 위한 배수 파이프의 구조를 보여주는 단면도.Figure 2 is a cross-sectional view showing the structure of the drain pipe for promoting consolidation to which the technique of the present invention is applied.

도 3a 내지 도 3b는 본 발명의 압밀 촉진을 위한 배수 파이프의 구조를 보여주는 단면도.3a to 3b is a cross-sectional view showing the structure of the drain pipe for promoting consolidation of the present invention.

도 4a 내지 도 4c는 배수재 내부에 설치된 드레인 파이프 끝단의 형상을 보여주는 예시도.Figures 4a to 4c is an exemplary view showing the shape of the end of the drain pipe installed in the drain.

도 5는 본 발명의 요부인 드레인 파이프의 다른 실시예를 보여주는 정면도.5 is a front view showing another embodiment of a drain pipe which is a main part of the present invention.

도 6은 본 발명의 다른 압밀 촉진을 위한 배수 파이프의 설치구조를 보여주는 단면도.Figure 6 is a cross-sectional view showing the installation structure of the drainage pipe for promoting another consolidation of the present invention.

본 발명은 진공압밀 탈수촉진 공법 및 그 배수파이프에 관한 것으로 상세하게는 압밀 촉진을 위한 배수재의 내측에 진공압을 이용하여 지하수를 강제 흡입하여 배수하는 드레인 파이프를 더 설치하여 단시간에 배수재의 내측으로 유입된 지하수를 배수할 수 있도록 한 진공압밀 탈수촉진 공법 및 그 배수파이프에 관한 것이다.The present invention relates to a vacuum consolidation dehydration promotion method and its drainage pipe, and more specifically, by installing a drain pipe for forcibly suctioning and draining groundwater using vacuum pressure inside the drainage material for promoting consolidation, and then into the drainage material in a short time. The present invention relates to a vacuum consolidation dehydration promotion method and a drainage pipe for draining the groundwater introduced therein.

통상 연약지반이라 함은 상부구조물을 지지할 수 없는 상태의 지반을 지칭하는 것으로, 즉 연약지반이라 하더라도 상부 구조물을 지지할 수 있느냐의 여부는 그 지반이 받는 하중의 크기에 달려 있는 상대적인 개념이다.In general, the soft ground refers to the ground in a state where the upper structure cannot be supported, that is, whether the soft ground can support the upper structure is a relative concept depending on the magnitude of the load that the ground receives.

상기 연약지반은 점성토립자와 그 사이에 지하수가 존재하여 지하수가 과다할 경우 공학적으로 연약지반으로 분류하고, 이 과잉간극수를 배수처리 하는 것을 연약지반 개량의 주 목표로 한다.The soft ground is classified as soft ground if the groundwater is present between the viscous granules and excessive groundwater, and the main target of the soft ground improvement is to drain the excess gap water.

연약지반내 과잉간극수를 배수처리 하는 방법으로는 Well point 공법과 Deep well 공법 및 진공압밀 탈수촉진 공법 등이 있으며, 상기 Well point 공법은 Well point라는 흡수관을 1.0-2.0m 간격으로 지하수면 아래에 설치하고 진공펌프와 연결하여 지하수를 강제적으로 흡수하여 펌프로 배수시켜서 지하수 수위를 저하시키는 공법이다.The drainage treatment of excess pore water in the soft ground includes well point method, deep well method and vacuum consolidation dehydration promotion method. The well point method uses an absorbing tube called the well point at the bottom of the water table at 1.0-2.0m intervals. Installed and connected to the vacuum pump forcibly absorbing groundwater and drained by the pump to reduce the groundwater level.

Deep well공법은 직경 0.3-1.0m 정도의 우물을 굴착하여 이 속에 관을 삽입 하고 내부로 유입되는 지하수를 펌프로 양수하는 공법으로 굴착에 앞서서 지하수위를 저하시키는 공법이다. Deep well method is a method of digging a well with a diameter of 0.3-1.0m, inserting a pipe into it, and pumping the groundwater flowing into the pump with a method of lowering the groundwater level before drilling.

한편 상기 진공압밀 탈수촉진 공법은 첨부도면 도 1에 도시된 바와 같이 지표면에 모래(100)를 타설하고 비닐시이트(200) 등의 기밀성의 막을 덮은 후 지반에 일정간격으로 배수재(310)를 박아 지반 속의 지하수를 진공펌프(400)로 배수하는 공법으로 배수재 구멍주위에 부직포재의 필터층(320)을 부착하여 토립자의 이동 없이 지하수만을 배수하여 지하수위를 낮추면서 지반을 압밀하는 공법을 말한다.Meanwhile, in the vacuum consolidation dehydration promotion method, as shown in FIG. 1, sand 100 is placed on the surface of the ground and the airtight material 310 is embedded in the ground at a predetermined interval after covering the airtight film such as the vinyl sheet 200. The method of draining the groundwater in the vacuum pump 400 is a method of consolidating the ground while attaching the filter layer 320 of the nonwoven fabric material around the drainage hole to drain only the groundwater without the movement of the earth and lower the groundwater level.

상기와 같은 종래 진공압밀 탈수촉진 공법은 진공펌프를 작동시켜 배수재의 내부를 진공상태로 만들어 대기압을 하중으로 이용하여 유효하중을 증가시켜 지하수를 외부로 배수하고자 할 때 배수재 내의 진공을 형성시키는 시간이 오래 소요되어 지하수를 배출하고자 하는 시간이 많이 걸렸으며 토압에 의해 쉽게 배수재가 변형되는 문제점이 있었다.In the conventional vacuum consolidation dehydration promotion method as described above, the vacuum pump is operated to make the interior of the drainage material into a vacuum state, and the atmospheric pressure is used as a load to increase the effective load to drain the groundwater to the outside. It took a long time to discharge the groundwater was a long time, there was a problem that the drainage easily deformed by the earth pressure.

본 발명은 상기한 종래 문제점을 감안하여 안출한 것으로서 진공펌프의 작동으로 배수재 내측의 공간을 빠르게 진공으로 형성시키고 따라서 이른 시간에 많은 양의 지하수를 배출시킬 수 있음과 더불어 토압에 의해 배수재의 변형을 방지하도록 한 진공압밀 탈수촉진 공법용 배수파이프를 제공하는데 있다.The present invention has been made in view of the above-mentioned conventional problems, and the vacuum inside the drainage can be rapidly formed by the operation of the vacuum pump, so that a large amount of groundwater can be discharged at an early time, and the deformation of the drainage by the earth pressure can be achieved. The present invention provides a drainage pipe for vacuum condensation dehydration promotion.

이러한 본 발명의 목적은 진공펌프와 배수재의 사이에 설치되는 배수관 연결구과 연결되어 수직으로 매립되되 다수의 통공을 형성한 원형의 배수재가 연결 설 치되며 배수재의 표면에 부직포가 피착되어 필터층 형성하여 이루어진 진공압밀 탈수촉진 공법용 배수파이프에 있어서, 진공펌프와 배수재의 사이에 설치되는 배수관 연결구와 연결 구성되며 배수재의 내측에 인입 설치되는 드레인 파이프를 더 설치하고 점토층의 최상부면보다 아래되는 위치의 배수재 내측으로 패킹수단이 설치되어 이루어진 것을 특징으로 하는 진공압밀 탈수촉진 공법 및 그 배수파이프에 의하여 달성된다.The object of the present invention is connected to the drain pipe connector is installed between the vacuum pump and the drain material is buried vertically, but the circular drain is formed by connecting a plurality of through holes connected to the non-woven fabric is deposited on the surface of the drain material to form a vacuum layer In the condensate dehydration promotion drainage pipe, it is connected to the drain pipe connector provided between the vacuum pump and the drainage material, and further installs a drain pipe that is introduced into the drainage material and is packed into the drainage material at a position lower than the top surface of the clay layer. It is achieved by a vacuum consolidation dehydration acceleration method and its drainage pipe, characterized in that the means is provided.

이하 바람직한 실시예를 첨부된 도면에 의거하여 상세히 설명하면 다음과 같다.Hereinafter, exemplary embodiments will be described in detail with reference to the accompanying drawings.

첨부도면 도 2는 본 발명의 기술이 적용된 압밀 촉진을 위한 배수 파이프의 구조를 보여주는 단면도로써 이에 따르면 본 발명은 지표면에 모래(100)를 타설하고 비닐시이트(200) 등의 기밀성의 막을 덮은 후 지반에 일정간격으로 배수재(310)를 박아 지반 속의 지하수를 진공펌프와 배수재의 사이에 설치되는 배수관 연결구과 연결되어 수직으로 매립되되 다수의 통공을 형성한 원형의 배수재가 연결 설치되며 배수재의 표면에 부직포가 피착되어 필터층 형성하여 이루어진 진공압밀 탈수촉진 공법에 있어서, 상기 비닐시이트(200)의 설치를 생략하고상기 진공펌프(400)와 배수재(310)의 사이에 설치되는 배수연결구(500)와 연결 구성되며 배수재(310)의 내측에 인입 설치되는 드레인 파이프(30)를 더 설치하고 점토층의 최상부면보다 아래되는 위치의 배수재(310) 내측으로 패킹수단(40)이 설치되어 이루어진 구조이 다.2 is a cross-sectional view showing a structure of a drainage pipe for promoting consolidation to which the technique of the present invention is applied, and according to the present invention, the sand is placed on the ground and the airtight film such as the vinyl sheet 200 is covered. The drainage 310 is driven at regular intervals in the ground, and the groundwater in the ground is connected to the drain pipe connector installed between the vacuum pump and the drainage, and is vertically buried, and a circular drainage that forms a plurality of through holes is connected and a nonwoven fabric is installed on the surface of the drainage. In the vacuum consolidation dehydration promotion method formed by being deposited to form a filter layer, the installation of the vinyl sheet 200 is omitted and is connected to the drain connector 500 installed between the vacuum pump 400 and the drainage material 310. The drainage material 310 of the position which is installed below the uppermost surface of the clay layer further installing the drain pipe 30 which is installed inlet inside the drainage material 310 Toward the 9000000000002 comprising a packing means (40) is installed.

상기와 같은 구조로 이루어진 본 발명의 작용 효과는 먼저 배수연결구(500)에 연결 구성되어 있는 진공펌프(400)를 작동시키면 진공압이 배수재(310) 내부에 형성됨과 동시에 배수재(310)의 주변에 잔존하는 지하수를 흡입하는 효과를 발생시키며 흡입되는 지하수는 부직포재의 필터층(320)에 의해 여과되어 여과된 지하수가 배수재(310) 내부에 모여지게 된다. Operational effect of the present invention made of the above structure is the first operating the vacuum pump 400 is connected to the drain connector 500 is formed in the drainage 310 and at the same time around the drainage 310 It generates the effect of sucking the remaining ground water and the ground water is sucked by the filter layer 320 of the non-woven fabric and the filtered ground water is collected inside the drainage material 310.

예컨데 배수재(310)의 주변에 잔존하는 지하수는 필터층(320)을 통과하여 여과된 상태로 지하수가 배수재(310)의 내부에 충입되면 진공압에 의해 배수재(310) 내부에 설치된 드레인 파이프(30)에 의해 지하수가 지면 밖으로 배출되게 된다. For example, when the groundwater remaining around the drainage material 310 is filtered through the filter layer 320 and the groundwater is filled into the drainage material 310, the drain pipe 30 installed inside the drainage material 310 by vacuum pressure. Groundwater is discharged out of the ground.

이때 상기 드레인 파이프(30)의 외주면에는 일정간격으로 지지리브(30a)를 형성하여 사용하는 것이 바람직하며, 그 이유는 토압에 의해 배수재(310)가 변형되는 것을 방지하기 위함이다.At this time, it is preferable to form and use the support ribs 30a on the outer circumferential surface of the drain pipe 30 at a predetermined interval, for the purpose of preventing the drainage material 310 from being deformed by earth pressure.

한편 상기 드레인 파이프(30) 하측 끝단면의 형상이 1개이상의 요홈을 형성하도록 형성하는 것이 바람직하다. 그 형태는 첨부도면 도 4에 도시된 바와 같이 삼각 요홈과 삼각요철이 형성되거나 사각요홈과 사각요철이 반복 형성되거나 반원홈을 형성시켜 사용할 수 있으며, 상기와 같이 드레인 파이프 하측 끝단면의 형상을 형성시켜 사용하는 이유는 진공펌프의 작동시 드레인 파이프 하측 끝단의 막힘을 방지하기 위해서이다.On the other hand, the shape of the lower end surface of the drain pipe 30 is preferably formed to form one or more grooves. Its shape can be used to form a triangular groove and triangular irregularities or repeated square grooves and square irregularities or semi-circular grooves as shown in Figure 4, forming the shape of the lower end surface of the drain pipe as described above The reason for this is to prevent clogging of the lower end of the drain pipe during operation of the vacuum pump.

또한 첨부도면 도 5에 도시된 바와 같이 상기 드레인 파이프(30)의 외주연에는 통공(30b)을 형성시켜 사용할 수 있다. 상기 통공(30b)은 지하수의 배출시 배출 량의 확대 및 배출시간을 단축시키는 역활을 수행한다.In addition, as shown in FIG. 5, the outer periphery of the drain pipe 30 may be formed by using a through hole 30b. The through hole 30b serves to expand the discharge amount and shorten the discharge time during the discharge of groundwater.

첨부도면 도 6은 본 발명의 진공압밀 탈수촉진 공법의 다른 실시예로써 배수재를 설치하기 위하여 굴착한 굴착지의 지반 구조를 형성하는 점성토립자의 입자가 커서 진공을 형성시키기 곤란성이 있을 때에는 배수재(310)의 하단 내측에 패킹(40a)을 더 설치하여 배수재(310) 내부가 진공 형성이 용이하게 할 수도 있다.Figure 6 is another embodiment of the vacuum consolidation dehydration promotion method of the present invention, when the particles of viscous granules forming the ground structure of the excavated site excavated to install the drainage material is difficult to form a large vacuum drainage material 310 The packing 40a may be further installed inside the bottom of the drainer 310 to facilitate vacuum formation.

이와 같은 구조를 갖는 본 발명은 진공펌프의 작동으로 배수재 내측의 공간을 빠르게 진공으로 형성시키고 따라서 이른 시간에 많은 양의 지하수를 배출시킬 수 있음과 더불어 토압에 의해 배수재의 변형을 방지하도록 하는 효과가 있다.The present invention having such a structure has the effect of preventing the deformation of the drain material by the earth pressure as well as being able to quickly discharge a large amount of groundwater in the early time by vacuuming the space inside the drain material by the operation of the vacuum pump. have.

Claims (6)

진공펌프와 배수재의 사이에 설치되는 배수관 연결구과 연결되어 수직으로 매립되되 다수의 통공을 형성한 원형의 배수재가 연결 설치되며 배수재의 표면에 부직포가 피착되어 필터층 형성하여 이루어진 진공압밀 탈수촉진 공법에 있어서, In the vacuum condensation dehydration promotion method, which is connected to the drain pipe connector which is installed between the vacuum pump and the drainage material and is vertically embedded, and a circular drainage material having a plurality of through holes is connected and a nonwoven fabric is deposited on the surface of the drainage material to form a filter layer. 상기 진공펌프와 배수재의 사이에 설치되는 배수관 연결구와 연결 구성되며 배수재의 내측에 인입 설치되는 드레인 파이프를 더 설치하고 점토층의 최상부면보다 아래 되는 위치의 배수재 내측으로 패킹수단이 설치되며 배수재의 하측 끝단면보다 내측에 설치된 드레인 파이프의 하측 끝단면이 조금 상부에 올려져 형성되어 이루어진 것을 특징으로 하는 진공압밀 탈수촉진 공법.It is connected to the drain pipe connector is installed between the vacuum pump and the drainage and further install a drain pipe installed in the inside of the drainage, the packing means is installed into the drainage in a position lower than the top surface of the clay layer and the lower end surface of the drainage A vacuum consolidation and dehydration promotion method, characterized in that the lower end surface of the drain pipe provided on the inner side is formed on the upper portion of the drain pipe. 제 1 항에 있어서, 상기 배수재의 하단 내측에 패킹을 더 설치하여 배수재 내부가 진공 형성이 용이하게 할 수도 있도록 한 것을 특징으로 하는 진공압밀 탈수촉진 공법.The vacuum consolidation dehydration promoting method according to claim 1, wherein a packing is further provided inside the lower end of the drain to facilitate vacuum formation inside the drain. 진공펌프와 배수재의 사이에 설치되는 배수관 연결구과 연결되어 수직으로 매립되되 다수의 통공을 형성한 원형의 배수재가 연결 설치되며 배수재의 표면에 부직포가 피착되어 필터층 형성하여 이루어진 진공압밀 탈수촉진 공법용 배수파이 프에 있어서, Drain pipe for vacuum consolidation and dehydration promotion method, which is connected to the drain pipe connector installed between the vacuum pump and the drain material, is vertically buried, and a circular drain material having a plurality of through holes is connected. In f 상기 진공펌프와 배수재의 사이에 설치되는 배수관 연결구와 연결 구성되며 배수재의 내측에 인입 설치되는 드레인 파이프를 더 설치하고 점토층의 최상부면보다 아래 되는 위치의 배수재 내측으로 패킹수단이 설치되며 배수재의 하측 끝단면보다 내측에 설치된 드레인 파이프의 하측 끝단면이 조금 상부에 올려져 형성되어 이루어진 것을 특징으로 하는 진공압밀 탈수촉진 공법용 배수파이프.It is connected to the drain pipe connector is installed between the vacuum pump and the drainage and further install a drain pipe installed in the inside of the drainage, the packing means is installed into the drainage in a position lower than the top surface of the clay layer and the lower end surface of the drainage A drain pipe for the vacuum consolidation and dehydration promotion method, characterized in that the lower end surface of the drain pipe provided on the inner side is formed to be slightly raised above. 제 3 항에 있어서, 상기 드레인 파이프의 외주면에는 일정간격으로 지지리브가 형성되어 있는 것을 특징으로 하는 진공압밀 탈수촉진 공법용 배수파이프.4. The drain pipe for vacuum consolidation and dehydration promoting method according to claim 3, wherein support ribs are formed on the outer circumferential surface of the drain pipe at a predetermined interval. 제 3 항에 있어서, 상기 드레인 파이프 하측 끝단면의 형상이 1개 이상의 요홈을 형성하도록 형성된 것을 특징으로 하는 진공압밀 탈수촉진 공법용 배수파이프.4. The drain pipe of claim 3, wherein the shape of the lower end surface of the drain pipe is formed to form at least one recess. 제 3 항에 있어서, 상기 드레인 파이프의 외주연에는 통공이 형성된 것을 특징으로 하는 진공압밀 탈수촉진 공법용 배수파이프. The drain pipe for vacuum consolidation dehydration promotion method according to claim 3, wherein the outer periphery of the drain pipe is formed with a through hole.
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KR101037952B1 (en) * 2008-05-22 2011-05-31 이재주 Soft ground drainage system with double vacuum pump
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CN109944263A (en) * 2019-03-22 2019-06-28 同济大学 Double vacuum dredging and precipitation system and method
KR20210078688A (en) 2019-12-19 2021-06-29 주식회사 네오엔비즈 Pneumatic Automated Aquaculture Farm.
CN112921949A (en) * 2021-01-18 2021-06-08 江苏鑫泰岩土科技有限公司 Ultra-low water level dynamic compaction system and method
CN113494041A (en) * 2021-07-27 2021-10-12 中国建筑土木建设有限公司 Construction device and construction method for building temporary sidewalk on sludge terrain
CN113494041B (en) * 2021-07-27 2022-06-17 中国建筑土木建设有限公司 Construction device and construction method for building temporary sidewalk on sludge terrain
KR20230057204A (en) 2021-10-21 2023-04-28 주식회사 네오엔비즈 Pneumatic Feeding System for Aquaculture Farm

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