KR100310728B1 - Early reforming construction work method of tender base for dredge soil using a vaccum pressure load and floating mat slab thereof - Google Patents

Early reforming construction work method of tender base for dredge soil using a vaccum pressure load and floating mat slab thereof Download PDF

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KR100310728B1
KR100310728B1 KR1019990020802A KR19990020802A KR100310728B1 KR 100310728 B1 KR100310728 B1 KR 100310728B1 KR 1019990020802 A KR1019990020802 A KR 1019990020802A KR 19990020802 A KR19990020802 A KR 19990020802A KR 100310728 B1 KR100310728 B1 KR 100310728B1
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ground
mat
vacuum
soft ground
floating mat
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KR1019990020802A
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KR19990068606A (en
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임철웅
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임철웅
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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
    • 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
    • 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

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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

PURPOSE: An early improvement method of the dredging soft ground using vacuum consolidation load is provided to reduce construction expenses with simplified construction works. CONSTITUTION: The early improvement method of the dredging soft ground using vacuum consolidation load comprises the steps of installing a filter inner corrugated drainpipe(3) and a filter surface corrugated drainpipe(3a) to an inner part(2) of the dredging soft ground(1) and the surface of the earth to be emerged to the outside of the surface of the earth, then binding pipes(3,3a) to an inlet(5) connected with a vacuum pump(4), spreading lower P.E mat paper(6a), a floating mat slab(7) having an inner hole(6a), upper P.E mat paper(6) and a P.V.C vacuum packing film(8) in order on the surface of the earth, covering up the outside of the upper P.E mat paper(6) with the P.V.C vacuum packing film(8) and covering up the edge(8a) of the P.V.C vacuum packing film(8) with the surrounding soil(9).

Description

진공압밀 하중을 이용한 준설토 연약 지반의 조기 개량 시공법및 그 부상 매트 슬라브{Early reforming construction work method of tender base for dredge soil using a vaccum pressure load and floating mat slab thereof}Early reforming construction work method of tender base for dredge soil using a vaccum pressure load and floating mat slab according to the present invention.

본 발명은 간석지및 준설토 투기장을 형성하고 있는 준설토 연약지반을 조기에 개량하기 위하여 제안된 진공압밀 하중을 이용한 준설토 연약지반의 조기 개량 시공법 및 그 부상매트 슬라브에 관한 것으로, 좌,우,하방(3방향)으로 관통하는 내공을 형성한 부상 매트 슬라브를 준설토 연약지반의 지표면에 깔아 설치한 다음 부상매트슬라브의 표면부가 대기와 밀폐되어 차단막의 기능을 발휘하는 P.V.C진공 포장막을 덮어 씌워 작용시에 대기와의 차단막이 되는 P.V.C진공 포장막의 내부가 부상 매트 슬라브의 내공에 의하여 진공 상태의 공간부를 형성하여 대기압의 하중과 진공펌프의 흡입력에 의해 진공압밀 상태가 되어 준설토 연약 지반이 진공 압밀 침하되면서 탈수 작용이 촉진되어 준설토 연약지반을 조기에 개량할 수 있도록 한 것이다.The present invention relates to an early improvement method of dredged soil soft ground using vacuum consolidation load proposed for early improvement of dredged soil soft ground which forms interstitial soil and dredged soil dumping ground, and the floating mat slab (3). Floating mat slab with internal holes penetrating through the ground is installed on the ground surface of the dredged soft ground, and the surface of the floating mat slab is sealed with the air to cover the PVC vacuum pavement which functions as a barrier film. The inside of the PVC vacuum pavement membrane, which is a blocking film, forms a vacuum space part by the internal hole of the floating mat slab, and becomes a vacuum consolidation state by the atmospheric load and the suction power of the vacuum pump, and the dredged soft ground is vacuum consolidated and the dehydration action is performed. It is promoted to improve dredged soil soft ground early.

종래에는 준설토 연약지반의 표층에 적정 두께의 시멘트를 급결시켜 표층을 강화하여 시공 장비를 진입 하였으며, 강화된 표층의 상부에 적정 두께의 모래흙을 적층하여 배수 기능을 발휘하도록 하였으며, 성토흙을 쌓아 올려 중압이 가하여 지도록 하여 탈수 작용이 이루어지게 하였다.In the past, cement of appropriate thickness was dripped on the surface of dredged soft ground to reinforce the surface layer, and the construction equipment was entered, and sand soil of appropriate thickness was stacked on top of the reinforced surface to perform drainage function. The dehydration effect was achieved by raising the medium pressure.

이와 같은 종래의 시공법은 시공 설치 작업의 복잡성및 작업기간이 많이 소요되어 설치 비용이 많이 들며 준설토의 연약지반에 함유되어 있는 염분으로 시멘트의 양생 상태가 불량한 결점이 있었다.Such a conventional construction method has a drawback in that the curing state of the cement is poor due to the salt contained in the soft ground of the dredged soil due to the high complexity of the installation work and the duration of the installation work.

본 발명은 개량하고자 하는 간석지 및 준설토 투기장의 준설토 연약지반의 상태는 일반적으로 반죽(액체)상태이므로 시공 장비의 진입및 시공작업을 위하여 반죽 상태의 준설토 연약 지반의 지표 층을 강화하기 위하여 좌, 우 하방(3방향)으로 관통되는 내공을 형성시킨 부상 매트 슬라브를 깔아 설치한 다음 부상 매트 슬라브의 표면을 P.V.C진공 포장막으로 덮어 씌워 설치하여 대기와의 진공 차단막이 되도록 시공 설치하여 대기와의 진공 차단막의 내부에 진공 상태의 공간부를 형성하면서 대기압의 진공 압밀에 의해 준설토 연약 지반이 압밀 침하되면서 탈수 작용을 촉진하여 준설토 연약지반을 조기에 개량할 수 있도록 하며, 간단한 시공법에 의해 시공 작업을 완료 하므로서 시공 설치 비용을 적게 할 수 있으며, 탈수 작용을 촉진하여 준설토 연약 지반을 조기에 개량할 수 있도록 함에 목적이 있다.In the present invention, since the state of the dredged soil soft ground of the interstitial soil and the dredged soil dumping ground to be improved is generally kneaded (liquid) state, the left, right to strengthen the ground layer of the dredged soil soft ground for the entry and construction work of construction equipment After installing the floating mat slab with the inner hole penetrating downward (three directions), install it by covering the surface of the floating mat slab with PVC vacuum packaging film and installing it to be a vacuum barrier film to the atmosphere. It is possible to improve dredged soil soft ground early by improving the dredged soil soft ground by consolidating and dredging the dredged soil soft ground by vacuum consolidation at atmospheric pressure while forming a vacuum space inside the construction. Installation cost can be reduced, dredged soil is soft by promoting dehydration The purpose is to enable the soil to be improved early.

도 1 은 본 발명을 시공한 상태의 단면도.1 is a cross-sectional view of the construction of the present invention.

도 2 는 도 1의 A-A 선 단면도.2 is a cross-sectional view taken along the line A-A of FIG.

도 3 은 본 발명의 부상 매트 슬라브의 시공 상태를 발췌한 사시도.Figure 3 is a perspective view of the construction state of the floating mat slab of the present invention.

* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

1 : 준설토 연약지반 2 : 내부1: dredged soft ground 2: interior

2a : 지표면 3 : 여과용 내부 주름 배수관2a: ground surface 3: inner pleat drainage pipe for filtration

3a : 여과용 지표면 주름 배수관3a: surface pleated drainage pipe for filtration

4 : 진공펌프 5 : 유입관4: vacuum pump 5: inlet pipe

6 : 상면 P.E매트지 6a : 하면 P.E매트지6: Top P.E Matte 6a: Bottom P.E Matte

7 : 부상매트 슬라브 7a : 내공7: floating mat slab 7a: inner hole

8 : P.V.C진공 포장막 8a : 가장 자리부8: P.V.C vacuum packaging film 8a: edge

9 : 주변흙9: surrounding soil

준설토 연약 지반(1)의 내부(2)와 지표면(2a)에 여과용 내부 주름 배수관(3)과 여과용 지표면 주름 배수관(3a)을 지표면(2a)의 외부로 인출 되도록 설치하여 진공 펌프(4)와 연결시킨 유입관(5)에 관통되도록 결속하였다.A vacuum pump (4) is installed in the interior (2) and the ground (2a) of the dredged soil soft ground (1) so that the inner pleated drain pipe (3) and the ground pleat drain pipe (3a) for filtration are drawn out to the outside of the ground (2a). Bound to penetrate the inlet pipe (5) connected to).

여과용 지표면 주름 배수관(3a)을 설치한 지표면(2a)에는 하면 P.E 매트지(6a)를 깔아 설치하며, 상기 하면 P.E 매트지(6a)의 상면에는 좌,우, 하방(3방향)으로 관통하는 내공(7a)을 형성시킨 다수의 부상매트 슬라브(7)를 깔아 설치하며, 부상 매트 슬라브(7)의 상면에는 상면P.E 매트지(6)를 덮어 씌우며, 상면 P.E매트지(6)의 외면부를 P.V.C진공 포장막(8)으로 덮어 씌워 설치한 다음 상기P.V.C 진공 포장막(8)의 가장자리부(8a)를 주변흙(9)으로 덮어 고정시켜 지표면(2a)의 외부인 주변흙(9)의 외부로 인출되는 여과용 내부 주름 배수관(3)과 여과용 지표면 주름 배수관(3a)을 진공 펌프(4)와 연결시킨 유입관(5)에 결속하므로서 본 발명의 시공이 완료된다.The surface surface 2a provided with the filtration ground surface drainage pipe 3a is provided with PE mat paper 6a on the lower surface, and penetrates to the upper surface of the lower surface PE mat 6a in left, right, and downward directions (3 directions). To install a plurality of floating mat slab (7) having formed the inner hole (7a) to cover the top surface of the mat mat slab (7) is covered with a top PE mat (6), the top of the PE mat (6) The outer surface is covered with a PVC vacuum packaging film (8) and then installed, and then the edges (8a) of the PVC vacuum packaging film (8) is covered with the surrounding soil (9) to fix the surrounding soil (9) outside the ground (2a). The construction of the present invention is completed by binding the inner pleated drain pipe 3 for filtration and the ground pleated drain pipe 3a for filtration to the inlet pipe 5 which is connected to the vacuum pump 4 to be drawn out to the outside.

이와 같은 본 발명은, 준설토 연약지반(1)의 지표면(2a)에 깔아 설치하는The present invention is installed on the ground surface (2a) of the dredged soil soft ground (1)

부상매트 슬라브(7)는 부상재질의 스티로폴(EPS)을 적정두께와 넓이의 스티로폴 판체로 성형 제작하되, 상기 스티로폴 판체의 내부에는 좌,우, 하방(3방향)으로 관통되어 공간부를 형성하는 내공(7a)을 형성하였다.The floating mat slab (7) is manufactured by forming a styropole (EPS) of the floating material into a styropole plate of the appropriate thickness and width, but the inner hole penetrating in the left, right, and downward (three directions) inside the styropole plate to form a space portion (7a) was formed.

상기 부상매트 슬라브(7)의 하면에 깔아 설치되는 하면 P.E매트지(6)는통풍구조이며, 상면에 깔아 설치되는 상면P.E매트지(6)는 밀폐 구조가 바람직하며, 상면P.E매트지(6)의 외면부를 덮어 씌워 설치되는 P.V.C.진공 포장막(8)은 완전 밀폐 구조이어야 한다. 또한, 준설토 연약지반(1)의 내부(2)와 지표면(2a)에 설치하는 여과용 내부 주름 배수관(3)과 여과용 지표면 주름 배수관(3a)은 점성토 연약 지반의 탈수용으로 사용되는 여과용 주름 배수관으로서 둘레부에 여과포를 피복시킨 구조의 여과용 주름 배수관(1996.3.22일자 공고번호 제 3745호)을 사용한다.The lower PE mat paper 6 installed on the lower surface of the floating mat slab 7 has a ventilation structure, and the upper PE mat paper 6 installed on the upper surface preferably has a sealed structure, and the upper PE mat 6 PVC vacuum packaging membrane (8) is installed to cover the outer surface of the should be completely sealed structure. In addition, the inner pleat drain pipe 3 for filtration and the ground pleat drain pipe 3a for filtration installed on the interior 2 and the ground surface 2a of the dredged soil soft ground 1 are used for filtration used for dewatering the soft clay soft ground. As the pleated drainage pipe, a pleated drainage pipe for filtration (notified by No. 3745 dated June 22, 1999) having a structure covered with a filter cloth is used.

상기 여과용 내부 주름 배수관(3)은 준설토 연약 지반(1)의 깊이의 정도에 따라 적정 깊이의 내부(2)에 위치하여 설치하며, 여과용 지표면 주름 배수관(3a)은 준설토 연약지반(1)의 지표면(2a)에 깔아 설치한다. 이때 지표면(2a)에 깔아 설치한 여과용 지표면 주름 배수관(na)의 설치 상태는 준설토 연약 지반(1)이 반죽(액체)상태이므로 여과용 지표면 주름 배수관(3a)의 자중에 의하여 지표면(2a)에서 가볍게 묻힌 상태로 설치된다.The inner pleated drain pipe (3) for filtration is located in the interior (2) of the appropriate depth according to the depth of the dredged soil soft ground (1), the ground surface pleated drain pipe (3a) for filtration dredged soil soft ground (1) Is installed on the ground surface (2a). At this time, the installation state of the ground surface pleated drainage pipe (na) laid on the ground surface (2a) is dredged soil soft ground (1), so the ground surface (2a) by the weight of the ground surface pleated drainage pipe (3a) for filtration Installed lightly buried in

이와 같은 본 발명은 준설토 연약지반(1)의 내부(2)와 지표면(2a)에 여과용 내부 주름 배수관(3)과 여과용 지표면 주름 배수관(3a), 하면 P.E 매트지(6a), 부상 매트 슬라브(7),상면 P.E매트지(6)및 P.V.C.진공 포장막(8)을 순차적으로 설치한 다음, P.V.C.진공 포장막(8)의 가장 자리부(8a)를 주변 흙(9)으로 덮어 고정시키며, 상기 준설토 연약 지반(1)의 내부(2)와 지표면(2a)에 설치하는 여과용 내부 주름배수관(3)과 여과용 지표면 주름 배수관(3a)을 외부로 인출하여 진공 펌프(4)와 연결된 유입관(5)에 결속하여 주므로서 본 발명의 시공을 완료한다.In the present invention, the inner pleated drainage pipe 3 for filtration and the ground pleated drainage pipe 3a for filtration, the lower surface PE mat paper 6a, and the floating mat are disposed on the inside 2 and the ground surface 2a of the dredged soft ground 1. The slab (7), the top PE mat (6) and the PVC vacuum packaging film (8) are installed in sequence, and then cover the edge (8a) of the PVC vacuum packaging film (8) with the surrounding soil (9) The internal pleat drainage pipe 3 and the filtration ground pleat drainage pipe 3a installed on the interior 2 and the ground surface 2a of the dredged soil soft ground 1 are drawn out to the outside, and the vacuum pump 4 and The construction of the present invention is completed by binding to the connected inlet pipe (5).

이와 같은 본 발명의 작용 상태를 설명한다.Such an operation state of the present invention will be described.

본 발명의 시공이 완료된 상태에서 진공 펌프(4)를 가동시켜 준설토 연약지반(1)의 내부에 함유되어 있는 수분(물)을 여과용 내부 주름배수관(3)과 여과용 지표면 주름 배수관(3a)의 내부로 유입되어 유입관(5)을 통하여 유출시킨다. 이때, 준설토 연약지반(1)의 지표면(2a)의 상부에 밀폐되어 설치되어 있는 P.V.C진공 포장막(8)으로 가압되고 있는 대기압의 하중이 부상 매트 슬라브(7)의 내부에 좌,우, 하방(3방향)으로 관통되어 진공 상태의 공간부가 되는 내공(7a)에 의하여 대기압 압밀 하중의 기능을 발휘하여 준설토 연약 지반(1)은 진공 압밀 침하 작용을 하면서 준설토 연약 지반(1)의 탈수 작용을 더욱 촉진시킨다.When the construction of the present invention is completed, the vacuum pump 4 is operated so that the water (water) contained in the dredged soil soft ground 1 is filtered through the inner pleat drainage pipe 3 and the ground surface pleat drainage pipe 3a for filtration. Is introduced into the interior of the outlet through the inlet (5). At this time, the load of the atmospheric pressure pressurized by the PVC vacuum paving film 8, which is sealed on the upper surface 2a of the dredged soft ground 1, is left, right, and lower inside the floating mat slab 7. The inner hole 7a penetrates into (3 directions) and becomes a space part in a vacuum state, thereby exerting a function of atmospheric pressure consolidation load, and the dredged soil soft ground 1 acts as a vacuum consolidation settlement and dehydrates the dredged soil soft ground 1. Further promote.

이와 같이 된 본 발명은, 상하면 P.E 매트지에 의하여 내공을 형성시킨 부상매트 슬라브를 준설토 연약지반의 지표면에 깔아 설치한 다음 대기와의 차단막이 되는 P.V.C 진공 포장막을 설치하므로서 P.V.C진공 포장막의 상부에서 가압되는 대기압의 하중과 진공 펌프의 흡입력에 의해 부상 매트 슬라브의 내공은 진공 상태의 공간부가 되어 준설토 연약지반의 지표면에 진공 압밀 하중이 작용되면서 준설토 연약지반의 탈수를 더욱 촉진시켜 준설토 연약지반을 조기에 개량할 수 있는 효과가 있다.According to the present invention, the floating mat slab formed by the upper and lower PE mats is laid on the ground surface of the dredged soft ground, and then the PVC vacuum paving membrane which is a barrier against the atmosphere is pressurized at the top of the PVC vacuum paving membrane. Due to the atmospheric pressure and suction force of the vacuum pump, the air hole of the floating mat slab becomes a vacuum space part, and the vacuum consolidation load acts on the ground surface of the dredged soft ground, further promoting the dewatering of the dredged soft ground, thereby improving dredged soft ground early. It can work.

또한, 본 발명은 준설토 연약지반의 탈수 촉진 작용을 대기압의 하중과 진공 압밀 하중에 의하여 이루어지도록 제안된 것이므로 종래처럼 준설토 연약 지반의 지표면에 배수 모래층이나 성토층을 쌓지 않으므로 시공작업이 간단하여 시공비를 크게 절감할 수 있다.In addition, the present invention is proposed to achieve the action of dehydration of the soft ground of the dredged soil by atmospheric load and vacuum consolidation load, so the construction work is simple, because the drainage sand layer or the fill layer is not stacked on the ground surface of the dredged soft ground. You can save a lot.

Claims (2)

준설토 연약 지반(1)의 내부(2)와 지표면(2a)에 여과용 내부 주름 배수관(3)과 여과용 지표면 주름 배수관(3a)을 지표면(2a)의 외부로 인출 되도록 설치하여 진공 펌프(4)와 연결시킨 유입관(5)에 관통되도록 결속하며, 상기 지표면(2a)에는 하면P.E매트지(6a)와 내공(7a)을 형성시킨 부상매트 슬라브(7), 상면P.E 매트지(6)및 P.V.C진공 포장막(8)을 순차적으로 깔아 설치하되, 상기 P.V.C 진공 포장막(8)은 상면 P.E 매트지(6)의 외면부를 덮어 씌워 P.V.C진공 포장막(8)의 가장자리부(8a)를 주변흙(9)으로 덮어 고정시켜 시공을 완료함을 특징으로 하는 진공압밀 하중을 이용한 준설토 연약 지반의 조기 개량 시공법.A vacuum pump (4) is installed in the interior (2) and the ground (2a) of the dredged soil soft ground (1) so that the inner pleated drain pipe (3) and the ground pleat drain pipe (3a) for filtration are drawn out to the outside of the ground (2a). Bound to penetrate the inlet pipe (5) connected to the surface, and the surface surface (2a), the floating mat slab (7), the upper surface PE mat (6) formed a lower surface PE mat (6a) and the inner hole (7a) And install the PVC vacuum packaging film 8 in sequence, the PVC vacuum packaging film 8 covers the outer surface of the upper PE mat paper 6 to cover the edge portion (8a) of the PVC vacuum packaging film (8) Early improvement construction method of dredged soil soft ground using vacuum consolidation load, characterized in that completed by covering and fixing with surrounding soil (9). 준설토 연약 지반(1)의 지표면(2a)에, 하면P.E매트지(6a)와 부상매트 슬라브(7), 상면P.E 매트지(6)및 P.V.C진공 포장막(8)을 순차적으로 깔아 설치하는 상기 지표면(2a)과 P.V.C 진공 포장막(8)사이에 진공 공간부를 형성하기 위하여 상기 부상 매트 슬라브(7)의 내부에 좌,우, 하방(3방향)으로 관통하는 내공(7a)을 형성함을 특징으로 하는 진공압밀 하중을 이용한 준설토 연약 지반의 조기 개량 부상 매트 슬라브.On the ground surface 2a of the dredged soil soft ground 1, the bottom PE mat 6a, the floating mat slab 7, the top PE mat 6, and the PVC vacuum packaging film 8 are sequentially laid and installed. In order to form a vacuum space portion between the ground surface 2a and the PVC vacuum packaging film 8, an inner hole 7a penetrating left, right, and downward (three directions) is formed inside the floating mat slab 7. An early improvement floating mat slab of soft dredged soil using vacuum consolidation load.
KR1019990020802A 1999-06-05 1999-06-05 Early reforming construction work method of tender base for dredge soil using a vaccum pressure load and floating mat slab thereof KR100310728B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100729567B1 (en) * 2006-07-26 2007-06-18 주식회사 대한아이엠 Method of construction for promoting drain by vacuum and pressure, and drain pipe there of
CN101831898A (en) * 2010-04-19 2010-09-15 中交天津港湾工程研究院有限公司 Horizontal shallow layer negative-pressure consolidation working cushion layer technique

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100427589B1 (en) * 2001-03-30 2004-04-29 김동민 Soil improvement structure and method viscous soil reclaimed land
CN104727299A (en) * 2015-02-17 2015-06-24 中交一航局第四工程有限公司 Vacuum preloading film pressing groove extension construction method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100729567B1 (en) * 2006-07-26 2007-06-18 주식회사 대한아이엠 Method of construction for promoting drain by vacuum and pressure, and drain pipe there of
CN101831898A (en) * 2010-04-19 2010-09-15 中交天津港湾工程研究院有限公司 Horizontal shallow layer negative-pressure consolidation working cushion layer technique

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