KR100368131B1 - The dredged soil tender base for vaccum space formation and an early stage improved construction method and the floating mat slab - Google Patents
The dredged soil tender base for vaccum space formation and an early stage improved construction method and the floating mat slab Download PDFInfo
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- KR100368131B1 KR100368131B1 KR1019990038831A KR19990038831A KR100368131B1 KR 100368131 B1 KR100368131 B1 KR 100368131B1 KR 1019990038831 A KR1019990038831 A KR 1019990038831A KR 19990038831 A KR19990038831 A KR 19990038831A KR 100368131 B1 KR100368131 B1 KR 100368131B1
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- dredged soil
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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
- E02D3/103—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains by installing wick drains or sand bags
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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
- E02D3/005—Soil-conditioning by mixing with fibrous materials, filaments, open mesh or the like
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0053—Production methods using suction or vacuum techniques
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0051—Including fibers
- E02D2300/0054—Including fibers made from plastic
- E02D2300/0056—PVC
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (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
Description
본 발명은 기초 연약지반이 되는 간석지에 준설토 투기장을 형성하여 준설토 투기장을 형성하고 있는 준설토 연약지반을 조기에 개량함과 동시에 준설토 연약지반의 하방으로 형성되어 지고있는 기초 연약지반을 개량할 수 있도록 제안된 진공공간 조성에 의한 준설토 연약지반과 기초 연약지반의 조기 개량 시공법 및 그 부상매트 슬라브에 관한 것으로, 준설토 연약지반의 지표면으로 수평드레인을 깔아 설치함과 동시에 수직드레인을 준설토 연약지반의 표면부에 하면 P.E 매트를 깔아 설치한 다음, 상,하 ,좌,우방(4방)으로 관통하는 내공을 형성한 구조의 부상매트 슬라브를 깔아 설치함과 동시에 상기 각 부상매트 슬라브의 사이마다 수평드레인을 깔아 설치하며, 그 상부로 상면P.E 매트와 P.V.C 진공 포장막으로 덮어 씌워 밀폐되어 진공이 되도록 설치하여 시공을 완료함으로써 작용시에 대기와의 차단막이 되는 P.V.C 진공포장막에 의하여 진공조성 공간부가 형성되어 지도록 하며, 이와 같이 형성되어지는 진공조성 공간부의 진공압밀 상태에서 진공펌프의 흡인력을 이용하여 상기 준설토 연약지반과 기초 연약지반의 내부에 함유되어 있는 물(습기)의 탈수를 촉진시키면서 준설토 연약지반과 기초 연약지반을 조기에 개량할 수 있도록 제안된 것이다.The present invention proposes to improve the dredged soil soft ground which forms dredged soil dumping ground in the tideland which becomes the ground soft ground, and to improve the ground soft ground which is formed under the dredged soft ground at the same time. The present invention relates to an early improvement method of dredged soil soft foundation and foundation soft ground by creating a vacuum space, and its floating mat slab. The vertical drain is installed on the surface of dredged soft ground and vertical drain is installed on the surface of dredged soft ground. After installing the PE mat on the lower surface, install the floating mat slab with the inner hole penetrating into the upper, lower, left and right sides (4 rooms) and horizontal drain between each of the above floating mat slabs. Cover the top with PE mat and PVC vacuum packing film to be sealed and vacuumed In this case, the vacuum composition space part is formed by the PVC vacuum packaging film which becomes a barrier film to the air at the time of completion of the construction, by using the suction force of the vacuum pump in the vacuum consolidation state of the vacuum composition space part thus formed. It is proposed to improve dredged soil soft ground and basic soft ground early while promoting dehydration of water (humidity) contained in the dredged soil soft ground and basic soft ground.
종래에 준설토 연약지반의 표층에 적정두께의 시멘트 급결층을 형성시킨 상부에 배수층을 형성하는 모래층과 중량압을 작용하는 성토층을 형성하는 시공법에있어서는 시공설치 작업의 복잡성 및 작업기간이 많이 소요되어 설치비용이 많이 들게 되는 결점이 있었으며, 또한 선출원 발명(1999.6.5 특허출원 제10-1999-20802호)에 있어서는 준설토 연약지반의 상부에 깔아 설치하는 부상매트 슬라브의 내부에 좌,우,하방(3방향)으로만 관통하는 내공을 형성하는 구조이므로, 부상매트 슬라브의 내공에 의해 형성되어지는 진공압밀 조성공간에 의한 진공압밀의 효과가 미흡하였으며, 탈수작용이 준설토 투기장을 형성하게 되는 간석지등의 기초 연약지반까지 미치지 못한 문제점이 있다.Conventionally, in the construction method of forming sand layer forming drainage layer and embankment layer acting on weight pressure on the upper surface of cement dredging layer of appropriate thickness in dredged soil, it takes much time and complexity of construction installation work. There is a drawback that the installation cost is high, and in the prior application invention (1999.6.5 Patent Application No. 10-1999-20802), the left, right, down (inside the floating mat slab laid on the upper part of the dredged soft ground) As the structure forms the inner hole penetrating only in three directions), the effect of vacuum consolidation due to the vacuum consolidation composition space formed by the inner hole of the floating mat slab is insufficient, and the dehydration action forms the dredged soil dumping ground. There is a problem that has not reached the basic soft ground.
본 발명은 종래의 제반 문제점을 해소하기 위하여 준설토 연약지반의 지표면으로부터 다수의 수평드레인을 깔아 설치함과 동시에 수직드레인은 기초 연약지반의 하부 깊이까지 이르도록 시공설치하며, 준설토 연약지반의 지표면에 시공설치하는 부상매트 슬라브는 그 내부에 형성하는 내공의 구조를 상,하,좌,우방(4방)으로 관통하도록 형성함으로써 진공조성공간이 크게 형성되어 탈수작용의 효율을 높이도록 하며, 준설토 연약지반으로부터 기초 연약지반에 까지 탈수작용이 동시에 이루어지면서 상기 준설토 연약지반과 기초 연약지반을 조기에 개량할 수 있도록 함에 목적이 있다.The present invention is to install a number of horizontal drains from the ground surface of the dredged soil soft ground in order to solve the conventional problems, while the vertical drain is installed to reach the bottom depth of the foundation soft ground, construction on the ground surface of the dredged soft ground Floating mat slab to be installed is formed to penetrate the structure of the inner hole formed therein up, down, left and right (four rooms), so that the vacuum composition space is largely formed to increase the efficiency of dewatering action and dredged soil soft ground. The purpose of this is to enable early improvement of the dredged soil soft ground and the ground soft ground from the dehydration effect from the ground to the ground soft ground at the same time.
도 1 은 본발명의 시공을 완료한 상태의 일부를 절개하여 보인 사시도1 is a perspective view showing a cut part of the state of completing the construction of the present invention
도 2 는 도 1의 단면도2 is a cross-sectional view of FIG.
도 3 은 도 2의 일부 확대도3 is a partially enlarged view of FIG. 2;
도 4 는 캐터필러를 이용하여 드레인을 시공 설치하는 상태도4 is a state diagram for installing the drain using a caterpillar
도 5 는 드레인을 시공 설치한 후 하면 P.E매트를 시공 설치한 상태도5 is a state in which the P.E mat is installed after the drain is installed
*도면의 주요 부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *
1 ; 원지반 2 ; 기초 연약지반One ; Base 2; Foundation Soft Ground
3 ; 준설토 연약지반 4 ; 준설토 투기장3; Dredged soil soft ground 4; Dredge Soil Arena
5 ; 캐터필러 5a ; 부상체5; Caterpillar 5a; Floating body
6 ; 수평드레인 6a ; 배수인출관6; Horizontal drain 6a; Drain pipe
7 ; 수직드레인 8 ; 하면 P.E 매트7; Vertical drain 8; P.E mat
9 ; 내공 10 ; 부상매트 슬라브9; Internal cavity 10; Floating Mat Slab
11 ; 상면 P.E 매트 12 ; P.V.C 진공 포장막11; Upper surface P.E mat 12; P.V.C vacuum packaging membrane
12a ; 가장자리부 13 ; 주변흙12a; Edge 13; Surrounding soil
14 ; 진공펌프 15 ; 배수흡입관14; Vacuum pump 15; Drain suction pipe
15a ; 배수유출관 16 ; 도랑형 구렁15a; Drainage pipe 16; Ditch hollow
17 ; 받침판 18 ; 구동체17; Base plate 18; Driving body
19 ; 크레인 장치 20 ; P.E 매트드럼19; Crane device 20; P.E Mat Drum
원지반(1)의 상부에 형성되어지는 기초 연약지반(2)의 상부에 준설토 연약지반(3)으로 이루어지는 준설토 투기장(4)을 시공설치한다. 상기 준설토 투기장(4)을 형성하고 있는 준설토 연약지반(3)의 지표면으로는 본 발명에 적합하도록 제작한 캐터필러(5)를 띄어 캐터필러(5)를 운용하면서 준설토 연약지반(3)의 표면부에 수평드레인(6)을 깔아 설치함과 동시에 수직드레인(7)을 준설토 연약지반(3)의 지표면으로부터 기초 연약지반(2)의 하부 깊이에 이르도록 시공 설치한다. 상기의 캐터필러(5)는 수륙양용 캐터필러(5)이다. 이 때 수직드레인(7)의 상단부(7a)는 수평드레인(6)에 걸어 물림되도록 설치하는 것이 바람직하다. 이와 같이, 수평드레인(6)과 수직드레인(7)이 시공 설치된 준설토 연약지반(3)의 상면부에는 하면 P.E 매트(8)를 깔아 설치한다. 상기 하면 P.E 매트(8)의 상면으로는 내부에 상,하,좌,우방(4방)으로 내공(9)이 관통되도록 형성한 구조의 부상매트 슬라브(10)를 깔아 설치하면서 각 부상매트 슬라브(10)의 사이마다에는 수평드레인(6)을 깔아 설치한다.A dredged soil dumping site 4 composed of a dredged soil soft ground 3 is installed on an upper portion of the basic soft ground 2 formed on the base ground 1. As the ground surface of the dredged soil soft ground 3 forming the dredged soil dumping ground 4, the caterpillar 5 manufactured to be suitable for the present invention is floated and the caterpillar 5 is operated, and the surface portion of the dredged soil soft ground 3 is operated. At the same time, the horizontal drain 6 is laid and the vertical drain 7 is constructed so as to reach the lower depth of the foundation soft ground 2 from the ground surface of the dredged soft ground 3. The above-mentioned caterpillar 5 is an amphibian caterpillar 5. At this time, the upper end portion 7a of the vertical drain 7 is preferably installed to be hooked on the horizontal drain (6). In this way, the lower surface P.E mat 8 is laid on the upper surface portion of the dredged soil soft ground 3 on which the horizontal drain 6 and the vertical drain 7 are installed. Each floating mat slab is installed on the upper surface of the bottom PE mat 8 while laying the floating mat slab 10 having a structure formed so that the inner hole 9 penetrates into the upper, lower, left and right sides (four rooms). Between each of the (10), horizontal drain (6) is laid to install.
이와같이 준설토 연약지반(3)의 지표면에 깔아 설치한 부상매트 슬라브(10)의 상면부에 상면 P.E 매트(11)를 덮어씌운 다음, 상면 P.E 매트(11)의 외면부를 P.V.C 진공 포장막(12)으로 덮어 씌워 준설토 연약지반(3)의 상부에 깔아 설치하여 설치당시에 이미 준설토 연약지반(3)의 둘레부로 여유있게 인출시켜놓은 각 수평드레인(6)을 서로 연접되도록 한데모아 상기 P.V.C 진공 포장막(12)의 둘레부로 관통시켜 배수 인출관(6a)을 형성한 다음, 이미 여유있게 형성시켜 놓은 상기 P.V.C 진공 포장막(12)의 가장자리부(12a)를 주변흙(13)으로 묻어 고정시켜 주므로서 상기 준설토 연약지반(3)의 상부가 외부와 밀폐된 상태가 되는 것이며, 상기 P.V.C 진공포장막(12)의 둘레부로 인출되어진 배수 인출관(6a)은 배수 유출관(15a)을 가진 진공펌프(14)와 연결설치된 배수 흡입관(15)에 연결설치한다.In this manner, the top surface of the floating mat slab 10 installed on the ground surface of the dredged soft ground (3) is covered with a top PE mat (11), and then the outer surface of the top PE mat (11) PVC vacuum packaging film (12) Covered with the upper surface of the dredged soil soft ground (3) and installed at the time of installation so that each horizontal drain (6) already drawn to the circumference of the dredged soil soft ground (3) to be connected to each other, the PVC vacuum packaging film ( 12) to form a drain outlet pipe 6a by passing through the periphery, and then bury the edge portion 12a of the PVC vacuum packaging film 12, which has already been formed, with the surrounding soil 13 to fix it. The upper part of the dredged soil soft ground (3) is to be in a sealed state with the outside, the drain discharge pipe (6a) drawn out to the circumference of the PVC vacuum packaging film 12 is a vacuum pump having a drain outlet pipe (15a) ( To the drain suction pipe (15) Install result.
상기 P.V.C 진공 포장막(12)의 가장자리부(12a)를 주변흙(13)으로 묻어 고정시킴에 있어서는 준설토 연약지반(3)의 둘레부를 굴착기등의 별도의 장비를 사용하여 적정깊이의 도랑형 구렁(16)을 파내어 P.V.C 진공 포장막(12)의 가장자리부(12a)를 철판이나 목판등의 받침판(17)에 부착한 상태로 상기 도량형 구렁(16)에 심설하여 주변흙(13)으로 묻어 고정설치한다.In burying and fixing the edge portion 12a of the PVC vacuum pavement film 12 with the surrounding soil 13, the periphery of the dredged soil soft ground 3 is used with a separate equipment such as an excavator to form a groove of an appropriate depth. Digging 16 and attaching the edge portion 12a of the PVC vacuum packaging film 12 to the backing plate 17 such as an iron plate or a wooden board is installed in the metrology hollow 16 and buried in the surrounding soil 13 to fix it. Install.
상기 준설토 연약지반(3)의 지표면에 부상되어 띄워 설치되는 캐터필러(5)는 본 발명을 시공설치하기에 적합하도록 별도로 제작한 것으로서 부상체(5a)는 통상의 구동체(18)(도시생략)에 의하여 진행하며, 부상체(5a)의 상부에는 통상의 크레인 장치(19)가 설치되었으며, 상기 구동체(18)에는 P.E 매트 드럼(20)을 설치하여 제작한 수륙양용 캐터필러(5)이다.The caterpillar 5, which floats and floats on the ground surface of the dredged soil soft ground 3, is manufactured separately so as to be suitable for installation of the present invention, and the floating body 5a is a conventional driving body 18 (not shown). It proceeds by, the conventional crane device 19 is installed on the upper portion of the floating body (5a), the drive body 18 is an amphibious caterpillar (5) produced by installing a PE mat drum (20).
이와 같은 본 발명은, 준설토 연약지반(3)의 지표면에 크레인 장치(19)와 P.E 매트 드럼(20)을 설치하여 제작한 수륙양용 캐터필러(5)를 진입시켜 부상시킨 상태에서 진행하면서 크레인 장치(19)를 이용하여 수평드레인(6)과 수직드레인(7)을 적절한 간격으로 서로 접설되도록 설치하되, 수직드레인(7)은 준설토 연약지반(3)을 통하여 기초 연약지반(2)의 하부 깊이까지 이르도록 시공설치하며, 상기의 수평 및 수직드레인(6)(7)을 시공 설치한 상부로는 하면 P.E 매트(8)를 깔아 설치한다. 상기의 하면 P.E 매트(8)의 상면에는 다수의 부상매트 슬라브(10)를 깔아 설치하면서 각 P.V.C 진공 포장막(12)의 사이마다에는 수평드레인(6)을 서로연접되도록 설치한다.The present invention as described above, while the crane device (19) and the landfill caterpillar (5) prepared by installing the crane device 19 and the PE mat drum (20) on the ground surface of the dredged soil soft ground (3) proceeds in the state of floating and lifting the crane device ( 19) the horizontal drain 6 and the vertical drain 7 are installed so as to be adjacent to each other at appropriate intervals, the vertical drain 7 through the dredged soil soft ground 3 to the bottom depth of the foundation soft ground 2 The construction is installed so as to reach, and the upper and lower PE mat (8) is laid on the upper surface where the horizontal and vertical drains (6) and (7) are installed. A plurality of floating mat slabs 10 are laid on the upper surface of the lower surface P.E mat 8, and horizontal drains 6 are provided to be connected to each other between each P.V.C vacuum packaging film 12.
이와 같은 작업은 부상매트 슬라브(10)를 깔아 설치한 상부로 손수레 등의 소형 작업차를 이용하는 것이 바람직하다. 이와같이 시공설치된 부상 매트 슬라브(10)의 상면부에는 상면 P.E매트(11)와 P.V.C 진공 포장막(12)을 외부와 밀폐되도록 설치하여 그 가장자리부(12a)를 준설토 투기장(4)을 형성하는 준설토 연약지반(3)의 둘레부를 파서 형성시킨 도랑형 구렁(16)에 받침판(17)에 의하여 주변흙(13)으로 묻어 고정 설치한 다음, 상기 P.V.C 진공 포장막(12)의 둘레부로 인출시켜 놓은 배수 인출관(6a)을 진공펌프(14)와 연결설치된 배수 흡입관(15)과 연결시켜 주므로서 본 발명의 시공설치 작업이 완료된다.In such a work, it is preferable to use a small work vehicle such as a cart to the upper part installed with the floating mat slab 10. The upper surface portion of the floating mat slab 10 installed in this manner is installed to seal the top PE mat 11 and the PVC vacuum packaging film 12 to the outside, and the dredged soil to form the dredged soil dumping area (4) of the edge portion (12a) Buried in the groove-shaped hollow (16) formed by digging the periphery of the soft ground (3) buried in the surrounding soil (13) by the support plate 17, and then fixed to the periphery of the PVC vacuum packaging film (12) The construction installation work of the present invention is completed by connecting the drain outlet pipe 6a with the drain suction pipe 15 connected with the vacuum pump 14.
이와같이 된 본 발명의 작용상태를 설명한다.The working state of the present invention thus made will be described.
본 발명의 시공이 완료된 상태에서 진공펌프(14)를 가동시켜 주게되면 배수흡입관(15)은 배수인출관(6a)을 통하여 각 수평드레인(6)과 수직드레인(7)에 흡인력을 발휘하게 됨과 동시에 각 부상 매트 슬라브(10)의 내부에 상,하,좌,우방(4방)으로 관통되어 있은 내공(9) 및 각 공간부가 진공상태를 조성하면서 각 수평 드레인(6) 및 수직드레인(7)에 흡인력을 가속하게 되면서 P.V.C 진공 포장막(12)의 내부는 진공압밀 상태를 형성하게 된다.When the vacuum pump 14 is operated while the construction of the present invention is completed, the drain suction pipe 15 exerts a suction force on each of the horizontal drain 6 and the vertical drain 7 through the drain discharge pipe 6a. At the same time, each of the horizontal drains 6 and the vertical drains 7 are formed while the inner holes 9 and the spaces, which penetrate the inside of each floating mat slab 10 up, down, left, and right (four rooms), and each space is in a vacuum state. As the suction force is accelerated to), the inside of the PVC vacuum packaging film 12 forms a vacuum consolidation state.
이와같은 상태는 준설토 연약지반(3)의 상부에서 진공압밀 기능을 발휘하는 상태이므로 준설토 연약지반(3)과 기초 연약지반(2)에 함유되어 있는 물(수분)은 각 수직드레인(7)과 수평드레인(6)으로 유입되어 배수 인출관(6a)을 통하여 배수 흡입관(15)으로 흡인되어 배수 유출관(15a)으로 배출되는 작용을 계속하면서 준설토 연약지반(3)과 기초 연약지반(2)에 함유되어 있는 물(수분)의 탈수를 동시에 촉진하여 상기 준설토 연약지반(3)과 기초 연약지반(2)을 조기에 개량할 수 있다.Since such a state exhibits a vacuum consolidation function in the upper part of the dredged soft ground (3), the water (moisture) contained in the dredged soft ground (3) and the basic soft ground (2) is the vertical drain (7) and Dredged soil soft ground (3) and basic soft ground (2) continue to be introduced into the horizontal drain (6) and sucked into the drain suction pipe (15) through the drain discharge pipe (6a) and discharged to the drain discharge pipe (15a). The dehydration of the water (moisture) contained in at the same time can be promoted at the same time to improve the dredged soil soft ground (3) and the foundation soft ground (2) early.
이와같이 된 본 발명은 준설토 연약지반(3)의 내부에 함유되어 있는 물(수분)을 탈수함에 있어서 모래 배수층과 성토층을 형성하는 일이 없이 준설토 연약지반(3)의 지표면에 상,하,좌,우방(4방)으로 관통하는 내공(9)을 형성한 구조의 부상매트 슬라브(10)를 깔아 설치하여 P.V.C 진공 포장막(12)으로 밀폐되도록 덮어 씌워 주므로서 형성되는 진공조성 공간부에 의한 진공압밀의 기능을 발휘하면서 준설토 연약지반(3)을 조기에 개량할 수 있는 간단한 시공법으로서 짧은 기간내에 시공을 완료하여 공사비를 크게 절감할 수 있으며, 준설토 연약지반(3) 및 기초 연약지반(2)을 동시에 개량할 수 있는 효과가 있다.In the present invention, the upper, lower, and left sides of the dredged soft ground (3) do not form a sand drainage layer and a fill layer in dewatering water (water) contained in the dredged soft ground (3). By installing the floating mat slab 10 having a structure in which the inner hole 9 penetrates into the right side (4 rooms) and is covered with a PVC vacuum packaging film 12 so as to be covered with a seal, the vacuum forming space is formed. It is a simple construction method that can improve dredged soil soft ground (3) early while demonstrating the function of vacuum consolidation, and can greatly reduce construction cost by completing the construction in a short period of time, and dredged soil soft ground (3) and basic soft ground (2). ) Can be improved at the same time.
Claims (4)
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CN103161150A (en) * | 2013-03-14 | 2013-06-19 | 安徽水利开发股份有限公司 | Seawall silt soft base blasting orienting sliding and moving method |
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KR100694638B1 (en) * | 2005-04-07 | 2007-03-13 | 삼성물산 주식회사 | The dehydration promotion method using for wings drain and the dehydration intake out-let a combination structure |
KR101290411B1 (en) * | 2012-04-27 | 2013-07-26 | 주식회사 동아지질 | Method of separating air and water and its apparatus for suction drain method |
CN115093094B (en) * | 2022-08-01 | 2023-10-31 | 交通运输部天津水运工程科学研究所 | Dredged soil and mud receiving pond based on waterway regulation and control and using method thereof |
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