KR19980064940A - Vacuum Consolidation Dewatering Acceleration Method for Dredged Soil Dumping Site Using Hollow Board Drain with Nonwoven Fabric - Google Patents
Vacuum Consolidation Dewatering Acceleration Method for Dredged Soil Dumping Site Using Hollow Board Drain with Nonwoven Fabric Download PDFInfo
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- KR19980064940A KR19980064940A KR1019980021031A KR19980021031A KR19980064940A KR 19980064940 A KR19980064940 A KR 19980064940A KR 1019980021031 A KR1019980021031 A KR 1019980021031A KR 19980021031 A KR19980021031 A KR 19980021031A KR 19980064940 A KR19980064940 A KR 19980064940A
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- 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
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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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0075—Textiles
- E02D2300/0076—Textiles non-woven
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- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- Agronomy & Crop Science (AREA)
- Ocean & Marine Engineering (AREA)
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
간석지등의 수심이 얕은 바닷가의 현장조건이나 지역의 특성에 구애됨이 없이 시설공정의 간소화로서 시공설치 비용을 적게 할 수 있도록 하며, 준설토투기장(1)의 내부에 다수의 중량추(6)을 걸어묶음시켜 형성한 여과주름관인 원형연성주름관(7)을 수평드레인공법으로 시공설치한 다음, 준설토를 매립하여 준설토지반(8)을 형성하여 준설토지반(8)이 가지는 자체의 밀폐성에 의하여 준설토지반(8)이 전단파괴현상이 발생되는 일이 없이 진공압밀 탈수작용을하여 탈수촉진효과를 높일 수 있도록 함.It is possible to reduce the cost of installation and installation by simplifying the facility process without being concerned with the site conditions of the shallow seaside and the characteristics of the region, and the weight of heavy weights (6) in the dredged dumping site (1). The circular flexible corrugated pipe (7), which is a filtration corrugated pipe formed by hanging, is installed by horizontal drainage method, and then the dredged soil is embedded to form a dredged soil (8), and the dredged soil (8) has its own sealing property. (8) It is possible to enhance the dehydration promotion effect by vacuum consolidation dehydration without the occurrence of shear failure phenomenon.
Description
본 발명은 간석지(干潟地)나 수심이 얕은 바닷가의 적정지역을 선정하여 제방을 축조하여주므로서 형성되어지는 준설토투기장(浚渫土投棄場)의 내부에 다수개의 중량추를 임의 간격으로 걸어 묶음시킨 원형연성주름관을 수평드레인공법으로 시공설치하되, 원형연성주름관은 집수관에 연결시킨 밀폐수지관에 연설하여 준설토투기장내의 바닷물에 설치하여 주므로서 원형연성주름관이 중량추의 무게에 의하여 준설토투기장의 바닷물에 설치하여 주므로서 원형연성주름관이 중량추의 무게에 의하여 준설토투기장의 바닥면으로 가라앉으면서 수평상태로 나란하게 설치되도록하며, 이와같은 상태에서 준설토투기장내부에 준설토(浚渫土)를 준설매립하여 주므로서 형성되는 준설토지반의 내부에 함유하고 있는 물을 진공압밀에 의해 탈수 촉진시킬 수 있도록 제안된 여과주름관을 이용한 준설토투기장(浚渫土投棄場)의 진공압밀 탈수촉진시공법에 관한 것으로 준설토를 준설매립한 준설토투기장이나 간석지 등의 현장조건이나 직역의 특성에 구애됨이 없이 용이하게 시공설치할 수 있으며, 수평드레인만을 시공설치한 상태에서도 별도의 성토층을 층설하거나 진공막을 설치하는 일이 없이 진공압밀 탈수촉진작용을 원활하게 할 수 있도록함에 주안점을 둔 것이다.The present invention is to bundle a plurality of weights at random intervals in the interior of the dredged dumping site is formed by selecting the appropriate area of the tideland or shallow water beach The circular soft pleated pipe is installed by horizontal drain method, but the circular soft pleated pipe is installed in the sea water in the dredged dumping site by speaking to the sealed resin pipe connected to the collecting pipe. The circular flexible corrugated pipe sinks to the bottom of the dredged dumping site by the weight of the weight and is installed side by side in a horizontal state.In this state, the dredged soil is dredged in the dredged dumping site. Dehydration can be accelerated by vacuum consolidation of water contained in the dredged soil formed by The present invention relates to a vacuum consolidation dehydration promotion method for a dredged soil dumping site using a filtration corrugated pipe. In addition, even if only horizontal drains are installed, the main focus is to facilitate the vacuum consolidation dehydration promotion without laying a separate fill layer or installing a vacuum membrane.
종래에 제안된 특허공고 제96-3745호(96. 3. 22)에 있어서는 점성토로 이루어진 연약지반의 상부에 반드시 모래배수층과 성토층을 순차적으로 적층되게 설치하면서 여과용주름관(원형연성주름관)을 수직상태와 수평상태로 시공설치하는 공법으로서 연약지반의 탈수효과는 원활하였으나 탈수작용을 반드시 성토층을 하중에만 의존하였으므로 토질 및 지역의 특성에 따라 현장조건이 적합하지 않으면 시공상의 어려움으로 시설비가 많아지게 되어 비경제적이며, 특히 한정된 지역에만 실시되고 있으므로 보편성이 적은 결점이 있었다. 또한 본원의 발명자가 선출출원한 1996. 9. 16.일 특허출원 제 96-4011호의 발명에 있어서는 준설토투기장 장내에 원형연성주롬관의 구조를 설치한바있으나 이는 시공상의 불안전성과 상부 압밀효과가 미흡한 결점이 있었다.In the previously proposed Patent Publication No. 96-3745 (96. 3. 22), a filtration corrugated pipe (circular ductile corrugated pipe) is installed while a sand drainage layer and a fill layer are sequentially stacked on top of a soft ground composed of viscous soil. As the construction method is installed vertically and horizontally, the dehydration effect of the soft ground was smooth, but the dehydration effect was dependent only on the load, so the facility cost is high due to the difficulty in construction if the site conditions are not suitable according to the soil and the characteristics of the area. It was uneconomical to lose, especially in a limited area, and thus had the disadvantage of less universality. In addition, in the invention of Patent Application No. 96-4011 filed on September 16, 1996, filed by the inventor of the present application, the structure of a circular flexible cast iron tube was installed in the dredged dumping field. there was.
본발명은 종래의 진공압밀 시공과정에서 발생된 문제점을 해소시키면서 진공압밀공법의 특성을 개량하여 탈수기능을 향상시키므로서 급속지반의 개량효과를 얻을 수 있도록 하며, 진공압인 대기압(1.0kg/Cm2)이 하중으로 작용될 경우 지중에 의한 부압상태의 간극수압이 작용되어 전단파괴현상이 발생되는 일이없이 강제압밀탈수기능을 원활하게할 수 있도록 제안하였다.The present invention improves the dehydration function by improving the characteristics of the vacuum consolidation method while eliminating the problems caused by the conventional vacuum consolidation process, to obtain the effect of rapid ground improvement, atmospheric pressure (1.0kg / Cm 2) ) Is applied to the pore water pressure under the negative pressure caused by the ground, so that the forced consolidation and dehydration function can be performed smoothly without generating shear failure.
즉, 갯뻘이나 준설토지반이 가지는 지반자체의 밀폐성을 이용하여 진공압을 겸용할 수 있는 진공압밀공법을 개량하였으며, 준설토매립지반(Hydraulic Fil)에 대해서 초기 상태부터 진공막이 필요하지 않은 진공압밀공법으로 급속탈수 할 수 있도록 개량하여 토지의 조건이나 지역의 특성에 구애됨이 없이 시공설치할 수 있도록 제안된 것으로서 이를 첨부도면에 의하여 상세히 설명하면 다음과 같다.In other words, by utilizing the hermetic properties of the soil or dredged soil itself, the vacuum consolidation method can be combined with vacuum pressure, and the vacuum consolidation method that does not require a vacuum membrane from the initial state for dredged soil reclaimed ground (Hydraulic Fil) It is proposed to be installed so that it can be rapidly dehydrated and installed without regard to the conditions of the land or the characteristics of the area.
도1은 본 발명을 실시하기 위하여 간석지(干潟地)에 제방을 축조하여 형성한 준설투기장(浚渫土投棄場)에 중량추를 걸어 묶음시킨 부직포를 피착 시킨 중공보드드레인을 수평드레인공법으로 시공설치한 상태의 단면 도.FIG. 1 is a hollow board drain coated with a nonwoven fabric which is bundled by hanging a weight on a dredging dump site formed by building an embankment in an interstitial land to implement the present invention. Cross-sectional view of a state.
도2는 도1의 준설투기장에 준설토를 매립한 상태의 단면도.2 is a cross-sectional view of a dredged soil embedded in the dredging dump of FIG.
도3은 도2에서 준설토투기장 상부의 바닷물을 품어낸 상태의 단면도.Figure 3 is a cross-sectional view of the state inflated the seawater in the dredged dumping site in Figure 2;
도4는 도2의 요부를 확대하여 보인 단면도.Figure 4 is an enlarged cross-sectional view of the main portion of FIG.
도5는 도3의 요부를 확대하여 보인 단면도.5 is an enlarged cross-sectional view of the main portion of FIG. 3;
도6은 본 발명은 시공설치한 상태에서 일부를 절개하여 보인 사시도.Figure 6 is a perspective view of a part of the present invention cut in the installation state.
도7은 본 발명의 부직포를 피착시켜 형성한 중공보드드레인의 일부 확대 사 시도.Figure 7 is an enlarged attempt of a portion of the hollow board drain formed by depositing the nonwoven fabric of the present invention.
(도면의 주요부분에 대한 부호의 설명)(Explanation of symbols for the main parts of the drawing)
1 : 준설토투기장1: Dredged Soil Arena
1a : 바닷물1a: seawater
2 : 제방2: dike
3 : 원바다3: one sea
4 : 집수관4: water collecting pipe
5 : 밀폐관5: sealed tube
6 : 중량추6: weight
7 : 부직포를 피착시킨 중공보드드레인7: Hollow board drain coated with nonwoven fabric
7a : 부직포7a: non-woven
8 : 준설토지방8: dredged soil
9 : 평면주벽9: flat circumferential wall
9a : 저면주벽9a: Bottom circumference wall
10 : 배수안내터짐부10: drain guide explosion
11 : 수평칸막이11: horizontal partition
11a : 통수구멍11a: through hole
12 : 수평탈수통로12: horizontal dewatering passage
간석지(干潟地)나 수심이 얕은 바닷가의 적정지역에 임의 면적을 설정하여 제방(2)를 축조하므로서 원바다(3)과 분리되는 준설토투기장(1)을 형성한다.By constructing an embankment (2) by setting an arbitrary area in an appropriate area of the tideland or shallow seashore, a dredged soil dumping site (1) separated from the original sea (3) is formed.
준설토투기장(1)을 형성하는 제방(2)의 상부에는 집수관(4)를 설치하여 밀폐관(5)와 다수이 중량추(6)을 임의간격으로 걸어 묶음시켜 부직포(7a)를 피착시켜 형성한 중공보드드레인(7)을 순차적으로 연설한다.A water collecting pipe 4 is installed on the upper part of the embankment 2 forming the dredged dumping site 1, and the closed pipe 5 and a plurality of weights 6 are attached to each other at random intervals to form a nonwoven fabric 7a. One hollow board drain 7 is spoken sequentially.
상기의 중량추(6)을 설치하는 부직포(7a)를 피착시켜 형성한 중공보드드레인(7)을 준설토투기장에 가둬진 바닷물(1a)에 수평드레인공법으로 시공설치하여 중공보드드레인(7)이 중량추(6)의 자중에 의하여 바닷물(1a)의 해수면 아래로 가라앉으면서 준설토투기장(1)의 바닥면에 수평상태로 나란하게 설치되게 한 다음, 준설토투기장(1)에 준설토를 매립하여 주설토지반(8)을 형성하는 것이며, 준설토지만(8)을 형성하는 준설토는 원바다(3)의 수심이 얕은 바닥이나 항로에 메워진초 연약지반 또는 갯뻘 등을 준설하여 공급하는 것이며, 이때 준설토투기장(1)내에 담수되어 있는 바닷물(1a)은 제방(2)에 형성한 배수통로(도시생략)을 통하여 원바다(3)로 넘쳐 배수되며, 준설토지반(8)의 상부에 채워저 있는 바닷물(1a)은 원바다(3)으로 품어 내므로서 본발명의 시공설치작업이 완료된다.The hollow board drain 7 formed by depositing the nonwoven fabric 7a on which the weight 6 is installed is installed in the sea water 1a trapped in the dredged dumping site by the horizontal drainage method to install the hollow board drain 7 After sinking below the sea level of the seawater 1a by the weight of the weight 6, the bottom surface of the dredged dumping site 1 is installed side by side in a horizontal state, and then the dredged soil is buried in the dredged soil dumping site 1 The dredged soil that forms the land halves (8), and the dredged soil that forms the dredged soils (8) is dredging and supplying soft grounds or mud flats filled with shallow depths of seas or paths. The seawater (1a) contained in (1) is overflowed to the original sea (3) through the drainage passage (not shown) formed in the embankment (2), and the seawater filled in the upper part of the dredged soil ground (8) 1a) is the construction of the present invention by incubating the sea (3) This task is completed.
도면중 미설명부호 3a는 원바다(3)의 바닥을 준설하여 형성되는 항로, 3b는 선박 4a는 진공펌프 7b는 부직포 교직면을 표시한 것이며, 제 6도에서 원 내부에 도시한 부분확대도는 부직포(7a)를 피착시킨 중공보드드레인(7)의 구조를 확대 도시하여 보인 단면도로서 평면주벽(9)와 저면주벽(9a)의 사이에 배수안내 터짐부(10)을 형성하는 내부에 수평칸막이(11)과 통수구멍(11a)에 의하여 수평탈수통로(12)가 되도록 형성시킨 중공보드드레인(7)의 둘레부에 부직포(7a)를 피착시켜형성한 구조를 도시한 것이다.In the figure, reference numeral 3a is a route formed by dredging the bottom of the original sea 3, 3b is a vessel 4a is a vacuum pump 7b is a non-woven fabric intersecting surface, a partial enlarged view shown inside the circle in FIG. Is a cross-sectional view showing an enlarged view of the structure of the hollow board drain 7 on which the nonwoven fabric 7a is deposited. The inner side of the flat guide wall 9 and the bottom circumferential wall 9a is horizontally formed therein. The structure formed by depositing the nonwoven fabric 7a in the periphery of the hollow board drain 7 formed so that the partition 11 and the water flow hole 11a become the horizontal dehydration path 12 is shown.
이와같은 본발명은 수심이 얕은 바닷가의 적정지역을 선택하여 제방(2)를 축조하므로서 원바다(3)의 바닷가측으로 형성되는 준설토투기장(1)에는 바닷물(1a)이 채워져 있는 상태이므로 바지선등의 선박을 이용하여 중량추(6)을 걸어묶은 상태의 부직포(7a)를 피착시킨 중공보드드레인(7)을 바닷물(1a)에 수평드레인 공법으로 시공설치하여 주게되면 중량추(6)의 자중에 의해서 바닷물(1a)하방으로 가라앉으면서 부직포(7a)를 피착시킨 중공보드드레인(7)이 준설토투기장(1)의 바닥면에 수평상태로 나란하게 시공설치되게 된다.In the present invention, the dredged dumping site (1) formed on the beach side of the original sea (3) is filled with seawater (1a) by selecting the appropriate area of the shallow seashore and constructing the embankment (2). When the hollow board drain 7 on which the nonwoven fabric 7a in the state where the weight 6 is bound by using a ship is installed and installed in the seawater 1a by the horizontal drain method, the weight of the weight 6 The hollow board drain 7 to which the nonwoven fabric 7a was deposited while sinking under the sea water 1a is installed side by side in a horizontal state on the bottom surface of the dredged dumping site 1.
이와같이 준설토투기장(1)의 내부에 다수의 부직포(7a)를 피착시킨 중공보드드레인(7)을 시공설치한 상태에서 준설토를 매립하여 주므로서 준설토투기장(1)내에 담수되어 있는 바닷물(1a)는 제방(2)의 일측으로 형성한 배수통로(도시생략)을 통하여 배출되거나, 제방(2)를 넘어 원바다(3)으로 넘쳐 흘러들어가게 되므로서 준설토투기장(1)내부는 준설토지반(8)이 형성된다.Thus, the seawater (1a) contained in the dredged soil dumping site (1) by filling up the dredged soil in the state of installing the hollow board drain (7) on which a large number of nonwoven fabrics (7a) are deposited in the dredged soil dumping site (1) It is discharged through a drain passage (not shown) formed on one side of the embankment (2), or overflows into the sea (3) over the embankment (2), so that the dredged soil ground (8) inside Is formed.
이때 준설토투기장(1)을 매립하기 위한 매립토는 사토나 모래도 가능하지만 현장공급이 어려우므로 공사비가 많아지게 된다.At this time, the landfill soil for reclaiming the dredged soil dumping ground (1) may be sand or sand, but construction costs are high because the site supply is difficult.
따라서 현장공급이 용이한 수심이 얕은 원바다(3)의 바닥에서 준설토를 공급하는것이 용이하였다.Therefore, it was easy to supply dredged soil from the bottom of the shallow sea (3), which is easy to supply on-site.
이와같은 시공설치작업에 의하여 형성되는 준설토지반(8)의 상부에 채워져있는 바닷물(1a)는 제방(2)의 타측의 원바닥쪽으로 품어내주므로서 도면의 제 3도 및 제 5와같이 완전한 준설토지반(8)이 형성된다.The seawater 1a filled in the upper part of the dredged ground 8 formed by such construction installation work is poured out to the bottom of the other side of the embankment 2, so that the dredged soil as shown in FIGS. The ground 8 is formed.
이와같이 형성된 준설토지반(8)내에 함유되어 있는 물은 모세관작용에 의하여 흡수기능을 가지는 부직포(7a)를 피착시킨 중공보드드레인(7)으로 흡수되어 밀폐관(5)와 집수관(4)를 통하여 진공펌프(4a)에 의하여 제방(2)넘어의 원바다(3)으로 배출시키므로서 준설토지만(8)의 탈수작용이 진행되는 것이다.The water contained in the dredged soil ground 8 formed as described above is absorbed by the hollow board drain 7 having the nonwoven fabric 7a having an absorbing function by capillary action, and sealed through the sealed tube 5 and the collecting pipe 4. The dewatering action of the dredged soil 8 proceeds by discharging the dredged soil 8 over the dike 2 by the vacuum pump 4a.
이와같은 탈수작용은 준설토지반(8)이 가지는 지반자체의 밀폐성에 의하여 별도의 진공막이 없이 진공압밀기능을 발휘하면서 평면으로 넓은 평면주벽(9)의 사이의 배수안내터짐부(10)에 의해서 바닷물(1a)을 급속하게 배수시켜 준설토지반(8)을 급속 탈수하게 되는 것이다.This dewatering action is performed by the drainage guide bursting part 10 between the flat circumferential wall 9 in a plane while exerting a vacuum consolidation function without a separate vacuum membrane due to the sealing property of the ground itself of the dredged soil 8. The dredging soil 8 is rapidly dehydrated by rapidly draining (1a).
이와같이된 본 발명은 간석지(干潟地)나 수심이 얕은 바닷가의 현장조건 및 지역의 특성에 구애됨이 없이 진공압밀공법의 특성을 이용하여 간단한 장비로서 용이하게 시공설치하므로서 공사비절감 효과를 얻을 수 있으며, 밀폐성을 가지는 준설토지반의 하중에 의하여 전단파괴현상이 발생되는 일이 없이 부직포(7a)를 부착시킨 중공보드드레인(7)에 의하여 강제압밀탈수기능을 원활하게 발휘하므로서 탈수기능을 향상시켜 준설토지반을 급속하게 개량할 수 있는 것이다.The present invention as described above can be achieved by reducing the cost of construction by installing easily as a simple equipment using the characteristics of the vacuum consolidation method, regardless of the characteristics of the site conditions and the area of the shallow water or shallow water beaches. The hollow board drain 7 with nonwoven fabric 7a attached to the dredged soil without any shear failure caused by the load of the dredged soil having hermeticity smoothly exerts the forced consolidation dewatering function and improves the dehydration function. It can be improved rapidly.
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KR1019980021031A KR100261407B1 (en) | 1998-06-08 | 1998-06-08 | A vacuum pressure tighening and dehydration quickening construction work method for the ground to discharge dredge soil using the hollow board drain with the non-woven cloth attached and the goods |
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KR1019980021031A KR100261407B1 (en) | 1998-06-08 | 1998-06-08 | A vacuum pressure tighening and dehydration quickening construction work method for the ground to discharge dredge soil using the hollow board drain with the non-woven cloth attached and the goods |
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KR20030008245A (en) * | 2001-07-16 | 2003-01-25 | 임철웅 | Embossed board drain and dehydration process by using it |
KR100427589B1 (en) * | 2001-03-30 | 2004-04-29 | 김동민 | Soil improvement structure and method viscous soil reclaimed land |
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CN104563063B (en) * | 2014-12-30 | 2016-08-24 | 浙江广川工程咨询有限公司 | A kind of vacuum preloading processing method utilizing compound draining board |
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KR100427589B1 (en) * | 2001-03-30 | 2004-04-29 | 김동민 | Soil improvement structure and method viscous soil reclaimed land |
KR20030008245A (en) * | 2001-07-16 | 2003-01-25 | 임철웅 | Embossed board drain and dehydration process by using it |
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