KR20020000318A - Method of horizontal drainage for pore water pumping of soft ground improvement - Google Patents
Method of horizontal drainage for pore water pumping of soft ground improvement Download PDFInfo
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- KR20020000318A KR20020000318A KR1020000034778A KR20000034778A KR20020000318A KR 20020000318 A KR20020000318 A KR 20020000318A KR 1020000034778 A KR1020000034778 A KR 1020000034778A KR 20000034778 A KR20000034778 A KR 20000034778A KR 20020000318 A KR20020000318 A KR 20020000318A
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- soft ground
- pore water
- horizontal drainage
- ground improvement
- horizontal
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 239000011148 porous material Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000005086 pumping Methods 0.000 title 1
- 238000007596 consolidation process Methods 0.000 claims abstract description 13
- 239000004575 stone Substances 0.000 claims abstract description 9
- 239000012535 impurity Substances 0.000 claims abstract 2
- 238000010276 construction Methods 0.000 abstract description 15
- 230000035699 permeability Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract 1
- 239000011150 reinforced concrete Substances 0.000 description 6
- 239000002689 soil Substances 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 4
- -1 polyethylene Polymers 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 239000004567 concrete Substances 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Classifications
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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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- 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
본 발명은 연약지반 개량구역의 압밀침하에 따라 발생하는 과잉 간극수의 원활한 배수에 의한 압밀침하 촉진, 집수정과 수평 배수관로의 용이한 설치, 공사비 절감 및 연약지반 개량공사의 시공성과 효율성 향상을 위한 배수공법으로서, 연약지반 개량구역의 연약지반을 터파기하여 수직 유공관을 설치하고 0.3m 높이로 부순돌을 채운 다음 그 위에 수직관을 잇대어 세우고 매립층과 선행재하 성토층으로 안정시키며 상기 수직 유공관에 수평 유공관을 연결하여 침투성이 양호한 부순돌을 채움으로써 연약지반의 압밀침하과정에서 발생하는 과잉 간극수용 집수정역할을 담당케함으로서 자연 집수되는 과잉 간극수가 강제로 배수되도록 시공하는 것이다.The present invention is to promote consolidation settlement by smooth drainage of excess pore water generated by consolidation settlement of soft ground improvement zone, easy installation of water collecting well and horizontal drainage pipe, reduction of construction cost and improvement of construction and efficiency of soft ground improvement construction. As a drainage method, break up the soft ground of the soft ground improvement zone, install vertical perforated pipes, fill the crushed stone with 0.3m height, put vertical pipes on top of each other, stabilize them with the landfill layer and the prefilled fill layer, and horizontal perforated pipes on the vertical perforated pipes. It is to construct the excess pore water to be naturally collected by forcing the pore water collection role for the excess pore water generated during the consolidation settlement of the soft ground by filling the impurity with good permeability through the connection.
Description
본 발명은 연약지반내에 투수성이 양호한 0.5∼10㎝ 정도의 자갈크기로 작게The present invention is small in the gravel size of about 0.5 ~ 10㎝ good water permeability in soft ground
깬 부순돌과 원심력 철근콘크리트 유공관, 원심력 철근 콘크리트관, 폴리에틸렌 유공관을 사용하여 집수정과 수평 배수관로를 설치하고 성토하중을 재하하여 연약지반을 압밀침하시키는 과정에서 발생하는 과잉 간극수를 수평으로 배수시키는 방법에 관한 것이며, 특히 과잉 간극수 처리를 위한 집수정과 수평 배수관로의 구축을 현장여건에 맞게 다양한 크기로 쉽게 설치할 수 있고, 그 과정에서 발생되는 과잉 간극수를 지중에서 정체됨이 없이 가장 가까운 수평 배수관로와 집수정으로 자연 집수되도록 유도하여 강제로 배수시키는 연약지반 개량구역의 간극수처리용 수평 배수공법에 관한 것이다.Using a broken crushed stone and centrifugal reinforced concrete pipes, centrifugal reinforced concrete pipes, and polyethylene hollow pipes to horizontally drain excess pore water generated in the process of consolidating the soft ground by loading sedimentation wells and horizontal drainage channels. In particular, the construction of a water collecting well and a horizontal drainage pipe for the treatment of excess pore water can be easily installed in various sizes according to the site conditions, and the excess horizontal water pipes generated in the process can be installed without having to stall in the ground. It relates to a horizontal drainage method for pore water treatment in soft ground improvement zones that induces natural drainage by furnace and catchment well.
일반적으로 연약지반개량공사에 적용되고 있는 수평 배수공법의 목적은 연약지반의 압밀침하를 위한 상부 배수층의 역할과 성토층 속으로 지하수가 상승하는 것을 차단하고 시공기계의 주행성(Trafficability)을 확보하는 지지층의 역할을 위한 것이다.The purpose of the horizontal drainage method, which is generally applied to soft ground improvement works, is to act as an upper drainage layer for consolidation settlement of the soft ground, and to support the groundwater to prevent the rise of groundwater into the fill layer and to secure the trafficability of the construction machine. It is for the role of.
이러한 목적을 달성하기 위하여 지반조건에 따라 모래 등을 사용하여 균일한 두께로 연약지반 위에 수평 배수층(Sand Mat)을 포설하며, 수평 배수층의 배수기능을 향상시키고자 폴리에틸렌 유공관을 수평으로 부설하여 압밀침하로 발생하는 과잉 간극수를 배제시키는 방법이 주로 사용되고 있다.In order to achieve this purpose, sand mats are laid on the soft ground with a uniform thickness using sand, etc., and the polyethylene pipes are laid horizontally to improve the drainage function of the horizontal drainage layers. The method of eliminating the excess pore water generated by is mainly used.
그러나 이러한 일반적인 수평 배수층은 연약지반의 압밀침하가 균일하게 발생되어야 배수기능이 안정적으로 유지되는데, 연약지반개량구역내 압밀침하의 국부적인 편차가 심한 탓으로 발생하는 과잉 간극수의 원활한 배수가 곤란하고, 폴리에틸렌 유공관의 손괴 등 수평 배수기능의 저하로 과잉 간극수의 소산이 늦어져서 압밀지연을 초래하기도 하며, 수평 배수층 형성용 모래 등의 자재비가 과다하게 소요되는 문제점이 있다.However, this general horizontal drainage layer maintains stable drainage function when the consolidation settlement of the soft ground is uniformly generated, and it is difficult to smoothly drain the excess pore water caused by the local deviation of the consolidation settlement in the soft ground improvement zone. Degradation of the horizontal drainage function, such as the collapse of the polyethylene perforated pipe, delays the dissipation of excess pore water, resulting in consolidation delay, and there is a problem that excessive material costs such as sand for horizontal drainage layer formation are required.
본 발명의 목적은 상기한 바와 같은 문제점을 고려하여 과잉 간극수 처리를 위해 집수정과 수평 배수관로를 다양한 크기로서 용이하게 설치할 수 있고, 상기 집수정과 수평 배수관로를 연약지반내에 설치하여 과잉 간극수의 자연 집수 및 강제 로 배수시키기 용이한 수평 배수방법을 제공하려는 것이다.It is an object of the present invention to easily install a sump well and a horizontal drainage pipe in various sizes for the treatment of excess pore water in consideration of the problems as described above, and to install the sump well and the horizontal drainage pipe in a soft ground. It is intended to provide a horizontal drainage method that is easy to catch naturally and forcibly drained.
본 발명은 연약지반 개량구간내의 연약지반에 터파기한 후 그 연약지반내에 원심력 콘크리트제 유공관을 수직으로 설치하고, 연약지반의 매립층과 선행재하 성토층에는 원심력 철근 콘크리트관을 상기 유공관에 수직으로 연결함으로서 압밀침하과정에서 발생하는 과잉 간극수용 집수정의 역할에 의하여 자연 집수된 과잉 간극수가 강제로 배수되도록 시공하는 것을 특징으로 하는 연약지반 개량구역의 간극수처리용 수평 배수공법을 제공한다.The present invention is to vertically install the centrifugal concrete concrete perforated pipe in the soft ground after rupturing in the soft ground in the soft ground improvement section, by connecting the centrifugal force reinforced concrete pipe to the perforated pipe vertically in the buried layer and the pre-loaded soil layer of the soft ground It provides a horizontal drainage method for the treatment of pore water in the soft ground improvement zone, characterized in that the construction of the excess pore water collected naturally by the role of the excess water collection wells generated during the consolidation settlement process.
도 1은 간극수처리 수평 배수공법에 의한 배수구조의 종단면도1 is a longitudinal sectional view of a drainage structure by a pore water treatment horizontal drainage method;
도 2는 간극수처리 수평 배수관로의 종단면도Figure 2 is a longitudinal sectional view of the pore water treatment horizontal drain pipe
도 3은 간극수처리 수평 배수공법에 의한 배수관로의 개괄적 평면도3 is a schematic plan view of the drainage pipe by the pore water treatment horizontal drainage method;
<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>
1 : 연약지반 2 : 매립층1: soft ground 2: landfill layer
3 : 선행재하 성토층 4 : 수직 유공관3: prefilled fill layer 4: vertical perforated pipe
5 : 원심력 철근 콘크리트관 6 : 뚜껑5: centrifugal force reinforced concrete tube 6: lid
7a,b,c,d,e : 부순돌 8a,b : 사질토7a, b, c, d, e: Crushed stone 8a, b: sandy soil
9 : 수평 유공관 10 : 과잉 간극수9: horizontal perforated pipe 10: excess pore water
11 : (집수정 설치용)터파기 12 : (수평 배수관로구축용) 터파기11: Excavator (for collecting water collector) 12: Excavator (for building horizontal drainage pipe)
13 : 집수정 14 : 수평 배수관로13: sump 14: horizontal drain pipe
15 : 연약지반 개량구역15: Soft ground improvement zone
본 발명의 간극수처리 수평 배수공법은 부순돌을 이용하여 설치한 집수정과 수평 배수관로로 구성된다. 집수정은 하위의 원심력 철근 콘크리트제 수직 유공관과 상위의 원심력 철근 콘크리트제 수직관으로 이뤄지고, 수평 배수관로는 합성수지제 수평 유공관으로 구축하여 연약지반내에 설치한다.The horizontal drainage method of the pore water treatment of the present invention is composed of a sump and horizontal drainage pipes installed using a crushed stone. The sump is composed of the lower centrifugal reinforced vertical vertical perforated pipe and the upper centrifugal reinforced vertical vertical pipe. The horizontal drainage pipe is constructed of synthetic horizontal horizontal perforated pipe and installed in the soft ground.
시공장비의 진입과 주행성을 확보할 수 있는 정도의 연약지반 또는 하천가,해안가 등의 매립층 하부에 두께 10m 이내의 연약지반이 존재하는 지층의 경우에도 이 공법은 적용가능하다. 초연약지반의 경우에는 시공장비의 진입과 주행성을 확보할 수 있는 정도의 성토용 토사를 포설한 후에 적용한다.This method is also applicable to the soft ground or the ground where the soft ground of less than 10m thickness exists in the bottom of the buried layer such as riversides and shores to ensure the entry and running of construction equipment. In the case of ultra soft ground, it is applied after laying the soil for the level that can secure the entry and runability of construction equipment.
압밀침하의 국부적인 편차로 인해 소산되기 어려운 과잉 간극수를 연약지반개량구역내에 설치한 다수의 집수정과 이를 연결하는 수평 배수관로에 정체되지 않도록 자연 집수시켜 강제 배수함으로서 연약지반 개량기간내내 안정적인 수평 배수기능을 유지되도록 하는 것이 본 발명의 궁극적인 목표요, 핵심이다.Stable horizontal drainage throughout soft ground improvement period by naturally collecting and collecting excess pore water, which is difficult to dissipate due to local deviation of consolidation settlement, to be naturally drained to prevent stagnation in a number of collection wells installed in the soft ground improvement zone and horizontal drainage pipes connecting them. Maintaining functionality is the ultimate goal and core of the present invention.
이하 첨부도면을 참조하여 구체적으로 본 발명의 시공방법을 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail the construction method of the present invention.
연약지반개량공사는 선행 재하공법을 적용한다. 수직 드레인재를 이용한 연직 배수공법을 적용할 경우에는 집수정(13)과 수평 배수관로(14)를 설치하기 전에 미리 수직 드레인재를 타설한다.Soft ground improvement works apply the preceding rehabilitation method. When the vertical drainage method using the vertical drainage material is applied, the vertical drainage material is poured in advance before the collection well 13 and the horizontal drainage pipe 14 are installed.
도 1은 간극수처리에 따른 수평 배수용 시공단면도로서, 연약지반 개량구역(15)내의 연약지반(1)에 집수정(13)을 설치하기 위하여 우선 연약지반(1)에 터파기(11)를 실시하고 원심력 철근 콘크리트제 수직 유공관(4)을 설치하며, 터파기(11)된 연약지반(1)의 바닥에서 상기 수직 유공관(4)의 하단 내부에 부순돌(7a)을 0.3m 높이로 채운다.1 is a construction cross-sectional view for horizontal drainage according to pore water treatment, in order to install a collecting well 13 on the soft ground 1 in the soft ground improvement zone 15, first, the trench 11 is installed on the soft ground 1. And install the centrifugal force reinforced concrete vertical perforated pipe (4), and filling the bottom of the vertical perforated pipe (4) to the bottom of the vertical perforated pipe (4) in the bottom of the trench 11 filled with 0.3m high .
상기 수직 유공관(4)에서 수평 배수용 폴리에틸렌 등의 합성수지제 수평 유공관(9)이 설치될 곳까지 터파기(11)된 연약지반(1)은 부순돌(7b)로 되메우고, 수직 유공관(4)에 수평 유공관(9)을 연결한 후 연약지반(1)의 윗경계선까지 부순돌(7c)을 포설한다.The soft ground (1), which is broken through to the place where the horizontal hollow pipe (9) made of synthetic resin, such as polyethylene for horizontal drainage, is installed in the vertical hollow pipe (4), is filled with a crushed stone (7b), and the vertical hollow pipe (4). After connecting the horizontal perforated pipe (9) to the crushed stone (7c) to the upper boundary line of the soft ground (1).
그 후, 수직 유공관(4)의 상단에는 선행재하 성토층(3)보다도 30㎝ 높게 원심력 철근 콘크리트제 수직관(5)을 연결하고, 이 수직관(5)의 주위 공간은 사질토(8a)로 1차 매립하여 매립층(2)을 이루고, 그 위 설계높이까지는 성토하여 선행재하 성토층(3)을 조성한다. 시공 후 수직관(5)의 상단에는 내구성 뚜껑(6)을 덮어서 이물질의 무단 침입을 막는다.Thereafter, a vertical pipe 5 made of centrifugal force reinforced concrete is connected to the upper end of the vertical perforated pipe 4 by 30 cm higher than the preloaded pile layer 3, and the surrounding space of the vertical pipe 5 is made of sandy soil 8a. The landfill layer 2 is formed by the first filling, and the filling layer is filled up to the design height thereon to form the preceding loading fill layer 3. After construction, cover the durable lid (6) on the top of the vertical pipe (5) to prevent unauthorized entry of foreign matter.
여기서, 시공 후 수직 유공관(4)은 수직관(5)과 함께 집수정(13)의 역할을 하고, 수평 유공관(9)은 수평 배수관로(14)를 이룬다.Here, after construction, the vertical perforated pipe 4 serves as a collecting well 13 together with the vertical pipe 5, and the horizontal perforated pipe 9 forms a horizontal drainage pipe 14.
도 2는 과잉 간극수를 처리하기 위한 수평 배수관로(14)의 종단면도로서, 연약지반(1)을 1.0m 가량 터파기(12)한 후 바닥으로부터 20㎝ 높이로 부순돌(7d)을 포설하고 그 위에 수평 유공관(9)을 설치한 다음 그 위에 다시 40㎝ 두께로 부순돌(7e)을 되메우며, 연약지반(1)의 윗경계선까지의 나머지 높이 40㎝는 사질토(8b)로 되메워 수평 배수관로(14)를 구축한다.FIG. 2 is a longitudinal cross-sectional view of a horizontal drain pipe 14 for treating excess pore water. After digging 12 of the soft ground 1 for about 1.0 m, the crushed stone 7d is laid at a height of 20 cm from the bottom. The horizontal perforated pipe 9 is installed thereon, and then 40 cm thick backfilled stone 7e is placed thereon, and the remaining height 40 cm to the upper boundary line of the soft ground 1 is filled with sandy soil 8b horizontally. A drain pipe 14 is constructed.
도 3은 연약지반 개량구간(15)내에 집수정(13)과 수평 배수관로(14)의 시공 모식도이다.3 is a schematic view illustrating the construction of the sump well 13 and the horizontal drainage pipe 14 in the soft ground improvement section 15.
이상 설명한 바와 같은 본 발명은 연약지반의 압밀침하로 발생된 과잉 간극The present invention as described above, the excess gap caused by the consolidation settlement of the soft ground
수를 부순돌을 이용하여 집수정과 수평 배수관로를 설치하는 것으로서, 연약지반개량구역내에 간극수처리용 수평 배수관로의 안정적 유지와 기능향상을 도모함으로서 압밀침하를 촉진시킬 수 있고, 상기 집수정과 수평 배수관로를 용이하게 설치할 수 있으며, 공사비가 저렴하고, 연약지반개량공사의 시공성과 효율성을 높일 수 있다.It is possible to promote the consolidation settlement by promoting the stable maintenance and improvement of the function of the horizontal drainage pipe for the pore water treatment in the soft ground improvement area by installing the sump and the horizontal drainage pipe using the crushed water. The horizontal drainage pipe can be easily installed, the construction cost is low, and the construction and efficiency of the soft ground improvement work can be improved.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101994312A (en) * | 2010-10-15 | 2011-03-30 | 中冶沈勘工程技术有限公司 | Soil side slope or tailings dam drainage construction method |
| CN105201002A (en) * | 2015-10-23 | 2015-12-30 | 金磐集团有限公司 | Underground structure seepage drainage system and construction method thereof |
| CN110228860A (en) * | 2019-07-15 | 2019-09-13 | 大连地拓环境科技有限公司 | Pollution prevention and control system for mine waste land |
| CN111962492A (en) * | 2020-08-28 | 2020-11-20 | 东华理工大学 | Soft soil foundation treatment device and method |
| CN114855846A (en) * | 2022-06-08 | 2022-08-05 | 贵州建工兴印建筑工程有限公司 | Underground seepage-proofing pressure-reducing anti-floating blind pipe structure and construction method thereof |
| CN115262309A (en) * | 2022-09-01 | 2022-11-01 | 核工业华东建设工程集团有限公司 | Construction method for settlement-preventing highway subgrade in soft soil area |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100641032B1 (en) * | 2006-05-24 | 2006-11-02 | 주식회사 용마엔지니어링 | Wastewater treatment method and structure |
| KR102751202B1 (en) | 2024-06-07 | 2025-01-10 | 주식회사 라온엔지니어링건축사사무소 | Waterproofing and drainage method for ground for building foundation construction |
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- 2000-06-23 KR KR10-2000-0034778A patent/KR100394433B1/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101994312A (en) * | 2010-10-15 | 2011-03-30 | 中冶沈勘工程技术有限公司 | Soil side slope or tailings dam drainage construction method |
| CN105201002A (en) * | 2015-10-23 | 2015-12-30 | 金磐集团有限公司 | Underground structure seepage drainage system and construction method thereof |
| CN110228860A (en) * | 2019-07-15 | 2019-09-13 | 大连地拓环境科技有限公司 | Pollution prevention and control system for mine waste land |
| CN111962492A (en) * | 2020-08-28 | 2020-11-20 | 东华理工大学 | Soft soil foundation treatment device and method |
| CN114855846A (en) * | 2022-06-08 | 2022-08-05 | 贵州建工兴印建筑工程有限公司 | Underground seepage-proofing pressure-reducing anti-floating blind pipe structure and construction method thereof |
| CN115262309A (en) * | 2022-09-01 | 2022-11-01 | 核工业华东建设工程集团有限公司 | Construction method for settlement-preventing highway subgrade in soft soil area |
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| KR100394433B1 (en) | 2003-08-09 |
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