KR100795695B1 - Drainage system for draining surface and sub-surface water in top layer of soft ground and improvement method for top layer of soft ground using the same - Google Patents

Drainage system for draining surface and sub-surface water in top layer of soft ground and improvement method for top layer of soft ground using the same Download PDF

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KR100795695B1
KR100795695B1 KR1020060116785A KR20060116785A KR100795695B1 KR 100795695 B1 KR100795695 B1 KR 100795695B1 KR 1020060116785 A KR1020060116785 A KR 1020060116785A KR 20060116785 A KR20060116785 A KR 20060116785A KR 100795695 B1 KR100795695 B1 KR 100795695B1
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drainage
soft ground
ground
water
core
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Korean (ko)
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김동항
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김동항
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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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/18—Reclamation of land from water or marshes
    • 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
    • E02D2200/1685—Shapes cylindrical
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00—Materials
    • E02D2300/0004—Synthetics
    • E02D2300/0006—Plastics
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2450/00—Gaskets
    • E02D2450/10—Membranes
    • E02D2450/105—Membranes impermeable
    • E02D2450/106—Membranes impermeable for liquids
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00—Miscellaneous
    • E02D2600/40—Miscellaneous comprising stabilising elements

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

Abstract

A drainage member for simultaneous drainage of surface water and sub-surface water in a top layer of the ultra soft ground and a soft ground improvement method using the same are provided to increase draining efficiency of the drainage member and to obtain ground soil bearing capacity of the very soft ground by inserting a spring shaped core material and a net shaped core material in a filter member. A pipe body having a core(3) and a filter material(4) is vertically and horizontally connected. The shape of the pipe body is maintained by bonding the core inserted in the filter material with reinforcing cores(5,5') to a longitudinal direction of a spring(3s). Vertical drainage members(1) are formed at the upper part of a horizontal drainage member(2) with a predetermined gap. A floating device, which is made of a styrofoam material, is attached at the upper end of the vertical drainage member.

Description

초연약지반 천층의 표면수와 지중수의 동시 배수용 배수재 및 이를 이용한 연약지반 개량공법{Drainage system for draining surface and sub-surface water in top layer of soft ground and improvement method for top layer of soft ground using the same}Drainage system for draining surface and sub-surface water in top layer of soft ground and improvement method for top layer of soft ground using the same}

도 1은 본 발명 수직수평연결한 배수재의 사시도1 is a perspective view of the drainage material vertically connected to the present invention

도 2는 본 발명 수직수평연결한 배수재의 단면도Figure 2 is a cross-sectional view of the vertically connected drainage material of the present invention

도 3은 본 발명 스프링형 코어에 늘어짐 방지용 보강심재를 접합한 실시예도Figure 3 is an embodiment bonded the reinforcement core for preventing sagging to the spring-type core of the present invention

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도 4는 본 발명 배수재에 의해 수중과 지중에 매설한 상태의 실시예를 나타내는 단면도 Figure 4 is a cross-sectional view showing an embodiment of the state buried in the water and ground by the present invention drainage material

도 5는 본 발명 배수재에 의해 수중과 지중에 매설한 상태의 실시예를 나타내는 평면도 Figure 5 is a plan view showing an embodiment of the state buried in the water and ground by the present invention drainage

도 6은 종래의 코어재가 삽입된 배수재를 나타내는 단면도6 is a cross-sectional view showing a drain material in which a conventional core material is inserted.

도 7은 종래의 코어재가 삽입된 배수재를 나타내는 단면도7 is a cross-sectional view showing a drain material in which a conventional core material is inserted.

도 8은 종래의 코어재가 삽입된 배수재를 나타내는 단면도8 is a cross-sectional view showing a drain material in which a conventional core material is inserted.

도 9는 종래의 코어재가 삽입된 배수재를 나타내는 단면도9 is a cross-sectional view showing a drain material in which a conventional core material is inserted.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

1 : 수직배수재 2 : 수평배수재1: vertical drainage 2: horizontal drainage

3 : 코어 3s : 스프링형 코어3: core 3s: spring-type core

4 : 필터재 4 filter material

5,5?: 보강심재 6 : 부력구5,5 ?: reinforcement core 6: buoyancy sphere

7 : 불투성지 8 : 중량물7: impervious paper 8: weight

9 : 표면수 10 : 집수정9: surface water 10: sump

11 : 펌프11: pump

본 발명은 준설 매립등에 의해 조성된 초연약지반 천층의 표면수 제거와 압밀촉진을 위하여 배수재를 지중과 수중에 수직수평연결 매설하여 초연약지반 천층의 표면수와 지중수를 동시에 조기배수시키는 배수재 및 이를 이용한 연약지반 개량 공법에 관한 것으로, 더욱 상세하게는 슬러지 상태의 초연약지반 천층에 매설선을 이용하여 수평배수재에 일정간격의 수직 배수재가 한조를 이루도록 연결한 배수재를 지중과 수중에 매설하여 표면수와 지중수를 동시에 배수시키고, 상기 배수재는 필터재 내부에 스프링형 코어재 또는 망형 코어재를 삽입하여 구성한 배수재에 의해 배수 성능이 월등히 향상되도록 한 초연약지반 천층의 표면수와 지중수의 동시 배수용 배수재 및 이를 이용한 연약지반 개량공법에 관한 것이다.The present invention is to vertically connect the drainage material in the ground and the water for the surface water removal and superficial consolidation of the super soft ground top layer formed by dredging landfill, etc. It relates to a soft ground improvement method using the same. More specifically, the surface of the soft ground material in the sludge state is buried in the ground and the water by connecting the horizontal drain material to the horizontal drain material to form a set of vertical drain material with a certain interval. Simultaneously drain water and groundwater, and the drainage material is the surface water and groundwater at the same time as the super soft ground top layer to improve the drainage performance by the drainage material formed by inserting the spring-type core or net-shaped core material into the filter material. Drainage for drainage and soft ground improvement method using the same.

준설매립한 초연약지반은 슬러지 상태이고 압축성이 크며 지반의 지내력이 거의 없는 상태이다. 준설매립지는 연약지반처리공사에 투입되는 중장비의 주행성 확보를 위한 최소한의 지내력이 확보되어야 하며 이를 위해서는 준설매립 후 최소한 수개월에서 수십개월에 이르는 방치 기간이 필요하다. 하지만 방치기간을 두어 지내력을 확보하는 방법은 공사기간이 길어지는 문제와 방치기간동안 해충의 서식으로 인하여 준설매립지 주위 주민들의 집단 민원 발생 문제점등이 대두되어 초연약지반 천층의 조기배수 방법과 경제적인 기술개발이 필요한 실정이다.The dredged super soft ground is in a sludge state with high compressibility and little ground strength. Dredged landfills should have a minimum bearing capacity to ensure the operability of heavy equipment put into soft ground treatment work, which requires at least several months to several decades after dredging landfill. However, the method of securing longevity through the period of neglect has emerged as a problem of prolonged construction period and problems of collective complaints of residents around dredging landfills due to the habitat of pests during the neglected period. Technology development is needed.

지금까지 주로 공사에 채용하는 초연약지반의 배수 및 중장비 주행성 확보를 위한 공법으로는 준설 매립 후 장기간 방치해서 토목섬유 등의 보강재와 모래를 포설하는 방법을 주로 사용하였다. As a method for securing ultra soft ground drainage and heavy equipment runability, which has been used up to now, the method of laying reinforcement materials such as geotextiles and sand after leaving dredging landfill for a long time has been mainly used.

그러나 중장비나 인력이 들어가서 작업을 하기 위한 최소한의 지내력을 확보하기 위해서는 오랜 기간 동안 방치하여야 한다. However, it is necessary to leave it for a long time in order to ensure the minimum endurance for heavy equipment or personnel to enter and work.

상기 사유로 인하여 공사기간이 길어지는 문제와 방치기간 동안 해충의 서식으로 준설매립지 주위 주민들의 집단 민원이 발생하는 문제점이 있었다.Due to the above reasons, there was a problem of lengthening the construction period and a group complaint of residents around the dredged landfill as a form of pest during the neglect period.

그리고, 종래의 코어재(11)가 삽입된 배수재는 도6내지 도9에 도시되어 있는 바와 같이 코어재(11)의 단면 부족과 통수공(12)의 부족, 시간이 경과함에 따른 배수단면의 막힘 및 통수공의 막힘 등으로 조기 및 지속적으로 다량의 배수성능을 발휘할 수 없는 문제점이 있었다.In addition, as shown in FIGS. 6 to 9, the drainage material in which the core material 11 is inserted in the related art has a shortage in cross-section of the core material 11, a shortage in the water hole 12, and a drainage cross-section with time. There was a problem that can not exert a large amount of drainage performance early and continuously due to blockage and blockage of the water hole.

연약지반을 개량함에 있어서 전기한 문제점 즉 방치기간, 지반의 지내력, 배수성능 등을 해결하기 위하여 슬러지 상태의 초연약지반 천층에 준설매립 후 매설선을 이용하여 수평배수재에 일정간격의 수직 배수재가 한조를 이루도록 연결한 배수재를 지중과 수중에 매설하여 표면수 및 지중수를 동시에 배수시키고 상기 배수재는 필터재 내부에 스프링형 코어재 또는 망형 코어재를 삽입하여 구성한 배수재에 의해 배수재의 배수성능을 더욱 향상되도록 하므로서 단기간 내에 초연약지반 천층의 지반 지내력, 방치기간, 해충서식등 준설매립지의 문제점 해결하는 것을 기술적 과제로 한다.In order to solve the above-mentioned problems in improving the soft ground, ie, the neglect period, ground bearing capacity, drainage performance, etc. The drainage material connected to form the groundwater and the groundwater are drained at the same time to drain the surface water and the groundwater at the same time, and the drainage material further improves the drainage performance of the drainage material by the drainage material formed by inserting a spring core or net core material into the filter material. The technical problem is to solve the problems of dredged landfills such as ground strength of the super soft ground top layer, neglect period and pest form within a short period of time.

상기 기술적 과제를 달성하기 위하여 본 발명은 초연약지반 천층에 수직수평 연결 배수재를 지중과 수중에 매설하여 초연약지반 천층의 표면수와 지중수를 동시에 조기 배출시키도록 하는 수직수평 연결 배수재에 의한 초연약지반 천층의 개량공법에 있어서, 상기 배수재를 수직배수재와 수평배수재에 연결 형성하되 그 배수재의 코어를 스프링형 코어재 또는 망형 코어재를 필터재 내부에 삽입하여 배수재 심재를 형성하여 표면수와 지중수의 동시배수, 대단면의 통수단면확보, 코어재 내부로 표면수 및 지중수 유입용이, 배수재의 막힘이 없는 등 조기 및 신속한 배수에 의해 초연약지반 천층을 개량함에 발명의 목적이 있다.In order to achieve the above technical problem, the present invention is embedded in the vertical and vertical ground connection drainage in the super soft ground ground layer, the premiere by the vertical horizontal connection drainage to discharge the surface water and ground water of the super soft ground ceiling layer at the same time early In the method of improving the weak ground layer, the drainage material is connected to the vertical drainage material and the horizontal drainage material, and the drainage core is inserted into the filter material by inserting the core of the drainage material into the spring-type core material or the mesh-shaped core material into the filter material to form the surface water and the ground. It is an object of the present invention to improve super soft ground top layer by early and rapid drainage such as simultaneous drainage of water, securing passage surface of large section, inflow of surface water and groundwater into core material, and no clogging of drainage material.

상기 목적을 달성하기 위하여 본 발명을 도1내지 도7을 참고하여 상세히 설명하면 다음과 같다.In order to achieve the above object, the present invention will be described in detail with reference to FIGS. 1 to 7 as follows.

본 발명의 배수재는 도 1 및 도2의 도시와 같이,Drainage of the present invention, as shown in Figures 1 and 2,

코어(3)와 필터재(4)로 된 관체에 의한 수직배수재(1)를 수평배수재(2)의 상부에 일정간격으로 수직연결 형성하되,
투수성 필터재(4)의 내부에 삽입된 코어(3)는 스프링(3s)의 내측에 길이방향으로 보강심재(5)(5')를 접합하여 그 관체의 형태가 유지되게 한다.The vertical drainage (1) by the tubular body consisting of the core (3) and the filter material (4) is formed on the upper portion of the horizontal drainage (2) to form a vertical connection,
The core 3 inserted into the permeable filter material 4 joins the reinforcing core materials 5 and 5 'in the longitudinal direction to the inner side of the spring 3s so that the shape of the tubular body is maintained.

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또한, 도3의 도시와 같이 수직 배수재(1)의 상부에는 스티로폼재로 된 부력구(6)를 부착하여 수직 배수재(1)의 부력유지를 향상 시킬 수 있고, 수평배수재(2)에는 그 바닥면에 불투수성지(7)를 부착하여 바닥으로의 역배수를 막고 봉체로 된 중량물(8)을 부착하여 수중에서 떠오름을 방지되게 하는 등 연약지반의 상태에 따라 조절 사용할 수 있다.In addition, as shown in FIG. 3, a buoyancy opening 6 made of styrofoam material may be attached to the upper portion of the vertical drainage 1 to improve buoyancy of the vertical drainage 1, and the bottom of the horizontal drainage 2 may have its bottom. It can be used according to the condition of the soft ground such as attaching impervious paper 7 to the surface to prevent back drainage to the floor and attaching the heavy material 8 of the rod to prevent rising from the water.

이와 같은 배수재를 이용한 초연약지반의 개량공법을 보면, If you look at the improvement method of super soft ground using such drainage materials,

전기한 바와 같은 필터재(4)로 된 관체 내부에 코어(3)가 내장된 수직배수재(1)와 수평배수재(2)가 결합 구성된 배수재를 이용하여, 도 6의 도시와 같이 수평배수재(2)를 지중에 일정간격으로 매설하여 연통되게하여 지중수를 집수하고, 수직배수재(1)는 수중으로 노출시켜 표면수(9)를 배수되게하여 그 배수재(1)(2)를 통하여 집수정(10)으로 집수된 표면수 및 지중수를 자연배수 또는 펌프(11)에 의해 강제 배수시켜 신속한 배수에 의해 초연약지반을 개량되게 하는 것이다.As shown in FIG. 6, the horizontal drainage material 2 is formed by using a vertical drainage material 1 having a core 3 embedded therein and a horizontal drainage material 2 coupled to the inside of the tubular body made of the filter material 4 as described above. ) Is grounded at regular intervals in the ground to communicate with the groundwater, and the vertical drainage material (1) is exposed to the water to drain the surface water (9) through the drainage material (1) (2). The surface water and ground water collected in 10) are forcibly drained by the natural drainage or the pump 11 to improve the super soft ground by rapid drainage.

이상과 같이 본 발명의 배수재 및 이를 이용한 초연약지반의 개량공법에 의하면,As described above, according to the drainage of the present invention and the improved construction method of the super soft ground using the same,

수직배수재(1)와 수평배수재(2)가 함께 구성된 배수재에 의해 종래와는 달리 지중수와 표면수를 동시에 배출시키므로서, 그 배수속도가 배가되어 신속한 배수로 연약지반 개량공사를 조기에 완료할 수 있는 것이며, 또한 배수재의 코어재를 즉 스프링형 코어(3s)는 표면수와 지중수의 유입이 용이하고 배수단면이 크므로 다량의 집수와 배수가 가능하고 토립자가 유입되어도 코어재의 막힘 현상이 발생치 않고, 가요성이 우수하여 배수재의 배수성능과 시공성능을 획기적으로 향상시킬수 있게 되는 것이다.By discharging the groundwater and the surface water at the same time by the drainage material composed of the vertical drainage material (1) and the horizontal drainage material (2) together, the drainage speed is doubled so that the soft ground improvement work can be completed early with rapid drainage. In addition, the core material of the drainage material, that is, the spring-type core (3s), is easy to inflow of surface water and groundwater, and has a large drainage cross section, so that a large amount of water can be collected and drained, and clogging of the core material occurs even when the granules are introduced. Rather, it is excellent in flexibility and can significantly improve the drainage performance and construction performance of the drainage material.

본 발명의 다른 실시예에 의한 스프링형 코어(3s)는 도 3에 도시되어 있는 바와 같이 상기 스프링형 코어(3s)에 변형 및 늘어짐 방지용 보강심재(5′)를 설치하여 코어의 강성을 확보하여 보다 우수한 코어의 품질을 확보하여 수직배수재(1), 수평배수재(2)의 성능을 더욱더 획기적으로 향상시킬 수 있게 되는 것이다.Spring-type core (3s) according to another embodiment of the present invention as shown in Figure 3 by installing a reinforcing core (5 ') for preventing deformation and sagging to the spring-type core (3s) to ensure the rigidity of the core It is possible to improve the performance of the vertical drainage (1), horizontal drainage (2) even more significantly by securing a better core quality.

이상과 같이 본 발명에 의한 수직수평연결 배수재에 의한 초연약지반 천층의 배수공법은 슬러지 상태의 초연약지반 천층에 준설매립 후 매설선을 이용하여 수평배수재에 일정 간격의 수직배수재가 한조를 이루도록 연결한 배수재를 수중과 지중에 매설하여 표면수 및 지중수를 동시에 배수시키고 상기 배수재는 필터재 내부에 스프링형 코어재 또는 망형 코어재를 필터재에 삽입하여 구성한 배수재에 의해 배수재의 배수성능이 더욱 향상되도록 하므로서 단기간내에 초연약지반 천층의 지반지내력, 방치기간, 해충서식 등 준설매립지의 문제점을 해결하는 효과가 있는 것이다.As described above, the method of draining the super soft ground top layer by the vertical horizontal connection drainage according to the present invention is to connect the vertical drainage with a certain interval to the horizontal drainage using a buried line after dredging is embedded in the super soft ground top layer in the sludge state. A drainage material is embedded in the water and the ground to drain the surface water and the ground water at the same time, and the drainage material further improves the drainage performance of the drainage material by a drainage material formed by inserting a spring core or mesh core material into the filter material. By doing so, it is effective to solve the problems of dredging landfill, such as ground strength of the super soft ground top ground, neglect period, pest form in a short time.

Claims (9)

코어(3)와 필터재(4)로 된 관체를 수직 및 수평으로 연결하여 된 배수재에 있어서,In the drainage material which vertically and horizontally connected the tube body which consists of the core 3 and the filter material 4, 필터재(4) 내부에 삽입된 코어(3)를 스프링(3s)의 길이 방향으로 보강심재(5)(5')를 접합하여 그 관체의 형태가 유지되게 하고,The core 3 inserted into the filter material 4 is joined to the reinforcing core materials 5 and 5 'in the longitudinal direction of the spring 3s so that the shape of the tube is maintained. 수직배수재(1)를 수평배수재(2)의 상부에 일정간격으로 수직 연결 형성하되,Vertical drainage (1) to form a vertical connection on the upper portion of the horizontal drainage (2) at regular intervals, 수직배수재(1)의 상단에는 스티로폼재로 된 부력구(6)를 부착하고 수평배수재(2)의 저면에는 중량물을 부가함을 특징으로 하는 초연약지반 천층의 표면수와 지중수의 동시 배수용 배수재.At the top of the vertical drainage material (1) attached to the buoyancy sphere (6) made of styrofoam material, and the bottom surface of the horizontal drainage material (2) for the simultaneous drainage of the surface water and ground water of the super soft ground top layer, characterized in that Drainage. 삭제delete 삭제delete 삭제delete 삭제delete 삭제delete 제 1항에 있어서, 수평 배수재(2)의 바닥면에 불투수성지(7)를 부착함을 특징으로 하는 초연약지반 천층의 표면수와 지중수의 동시 배수용 배수재.The drainage material for simultaneous drainage of surface water and ground water in a super soft ground base layer according to claim 1, wherein an impervious paper (7) is attached to the bottom surface of the horizontal drainage material (2). 삭제delete 필터재(4)로 된 관체 내부에 코어(3)가 내장된 수직배수재(1)와 수평배수재(2)가 결합 구성된 배수재를 이용하여, 수평배수재(2)를 지중에 일정간격으로 매설하여 연통되게 하여 지중수를 집수하고, 수직배수재(1)는 수중으로 노출시켜 표면수(6)를 배수되게 하여 그 배수재(1)(2)를 통하여 집수정(10)으로 집수된 표면수 및 지중수를 배수시켜 신속한 배수에 의해 초연약지반을 개량되게 함을 특징으로 하는 초연약지반 천층의 표면수와 지중수의 동시 배수용 배수재를 이용한 연약지반 개량공법.The horizontal drainer 2 is embedded in the ground at regular intervals by using a drainage material composed of a vertical drainage material 1 having a core 3 embedded therein and a horizontal drainage material 2 formed inside the tubular body made of a filter material 4. Surface water and ground water collected by the vertical drainage material (1) exposed to the water to drain the surface water (6) and collected by the sump (10) through the drainage material (1) (2). Soft ground improvement method using the drainage material for the simultaneous drainage of surface water and ground water of the super soft ground ground layer, characterized in that to improve the super soft ground by rapid draining.
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KR101049455B1 (en) * 2008-10-13 2011-07-15 김준범 Floating Horizontal Drain for Dredged Soft Ground
CN102691291A (en) * 2012-06-15 2012-09-26 河海大学 Float-type surface water draining device and method
KR20220075607A (en) * 2020-11-30 2022-06-08 한국농어촌공사 Drain culvert with surface water drainge

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JPH0313617A (en) * 1989-06-08 1991-01-22 Daito Kogyo Kk Horizontal drain construction method in submarine
JP2000001846A (en) 1998-06-16 2000-01-07 Ohbayashi Corp Underwater ground improvement method and improvement device
KR20030068660A (en) * 2002-02-15 2003-08-25 송기현 Multipurpose water pipe and construction method of weak ground dehydration and acceleration using it
JP2003247225A (en) 2002-02-22 2003-09-05 Hanshin Expressway Public Corp Airtight structure in atmospheric pressure method

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JPH0313617A (en) * 1989-06-08 1991-01-22 Daito Kogyo Kk Horizontal drain construction method in submarine
JP2000001846A (en) 1998-06-16 2000-01-07 Ohbayashi Corp Underwater ground improvement method and improvement device
KR20030068660A (en) * 2002-02-15 2003-08-25 송기현 Multipurpose water pipe and construction method of weak ground dehydration and acceleration using it
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KR101049455B1 (en) * 2008-10-13 2011-07-15 김준범 Floating Horizontal Drain for Dredged Soft Ground
CN102691291A (en) * 2012-06-15 2012-09-26 河海大学 Float-type surface water draining device and method
CN102691291B (en) * 2012-06-15 2014-09-10 河海大学 Float-type surface water draining device and method
KR20220075607A (en) * 2020-11-30 2022-06-08 한국농어촌공사 Drain culvert with surface water drainge
KR102475768B1 (en) * 2020-11-30 2022-12-08 한국농어촌공사 Drain culvert with surface water drainge

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