JP2759263B2 - Ground treatment and bag protection method at the place where dewatering bags are laid - Google Patents
Ground treatment and bag protection method at the place where dewatering bags are laidInfo
- Publication number
- JP2759263B2 JP2759263B2 JP5996496A JP5996496A JP2759263B2 JP 2759263 B2 JP2759263 B2 JP 2759263B2 JP 5996496 A JP5996496 A JP 5996496A JP 5996496 A JP5996496 A JP 5996496A JP 2759263 B2 JP2759263 B2 JP 2759263B2
- Authority
- JP
- Japan
- Prior art keywords
- bag
- dewatering
- laid
- ground
- permeable layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Revetment (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、脱水袋の敷設場所
における地盤の処理および袋の保護方法に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of treating ground at a place where a dewatering bag is laid and a method of protecting the bag.
【０００２】[0002]
【従来の技術】従来より、河川や湖沼などに堆積してい
る高含水の泥土を透水性の袋体に充填して脱水袋を作製
し、この脱水袋を盛土や埋土などの施工に有効利用する
技術が存在する。特開平６−３３０５１４号公報には、
上記のように高含水泥土を充填した透水性袋体を地盤上
に敷設して、袋体内の泥土の脱水と泥土の再充填とを所
要回数繰り返して行い、袋体内に多量の泥土を充填した
脱水袋を作製する技術が開示されている。2. Description of the Related Art Conventionally, a highly hydrated mud accumulated in rivers, lakes and marshes is filled into a permeable bag to produce a dewatering bag, and this dewatering bag is effective for embankment and embankment. There are technologies to use. JP-A-6-330514 discloses that
The permeable bag filled with the high water content mud as described above was laid on the ground, and the dehydration of the mud in the bag and the refilling of the mud were repeated a required number of times, and the bag was filled with a large amount of mud. A technique for producing a dewatering bag is disclosed.
【０００３】[0003]
【発明が解決しようとする課題】上記の従来技術におい
て脱水袋内の泥土の脱水を行う場合、脱水袋を起伏の多
い地盤上に敷設すると破裂するおそれがある。そこで、
従来は、地盤上に砕石等を敷き、その上に木製合板等の
平板をおいて平面状の敷設面を形成してから、脱水袋を
敷設し脱水を行っていた。しかし、この方法の場合、平
板と接触する脱水袋の下側からの脱水効率が著しく低下
するという問題が発生する。In the prior art described above, when dewatering mud in a dewatering bag, if the dewatering bag is laid on uneven terrain, it may burst. Therefore,
Conventionally, crushed stones or the like are laid on the ground, a flat laying surface such as a wooden plywood is formed thereon to form a flat laying surface, and then a dewatering bag is laid to perform dewatering. However, in this method, there is a problem that the dewatering efficiency from the lower side of the dewatering bag in contact with the flat plate is significantly reduced.
【０００４】[0004]
【発明の目的】本発明は、上記のような問題点を解決す
るためになされたもので、脱水袋の破裂防止が図れるだ
けでなく、脱水効率の向上を図ることができる脱水袋の
敷設場所における地盤の処理および袋の保護方法を提供
することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and not only can the dewatering bag be prevented from bursting but also the dewatering bag laying place can be improved in dewatering efficiency. It is an object of the present invention to provide a method for treating a ground and protecting a bag.
【０００５】[0005]
【課題を解決するための手段】即ち、本発明は、透水性
の袋体内に泥土を充填して作製した脱水袋を地盤上に敷
設して脱水袋内の泥土の脱水を行う際に、前記脱水袋と
地盤敷設面との間に透水層を介在させることを特徴とし
た、脱水袋の敷設場所における地盤の処理および袋の保
護方法である。また、前記透水層は、その上面を平面状
に形成することを特徴とする。あるいは、前記脱水袋
は、前記透水層に形成した凹部内に嵌め込んで敷設する
ことを特徴とする。さらに、前記透水層が砂層やプラス
チックボ−ドドレ−ンあるいは不織布より成ることを特
徴とする。That is, the present invention relates to a method for dewatering mud in a dewatering bag by laying a dewatering bag prepared by filling mud in a water-permeable bag on the ground. A method of treating the ground and protecting the bag at the place where the dewatering bag is laid, characterized by interposing a permeable layer between the dewatering bag and the ground laying surface. Further, the water-permeable layer is characterized in that its upper surface is formed in a planar shape. Alternatively, the dewatering bag is laid by being fitted into a concave portion formed in the water-permeable layer. Further, the permeable layer is made of a sand layer, a plastic board drain or a nonwoven fabric.
【０００６】以下、図面を参照しながら、本発明の実施
の形態について説明する。An embodiment of the present invention will be described below with reference to the drawings.
【発明の実施の形態１】図１に示すように、透水性の袋
体１１内に高含水泥土１２を充填して脱水袋１を作製す
る。この脱水袋１は、地盤の敷設面２上に敷設して脱水
を行うが、敷設面２に起伏があると脱水袋１の下側に起
伏の凸部が当たって部分的に集中荷重が発生するため、
破裂するおそれが生じる。First Embodiment As shown in FIG. 1, a dehydrated bag 1 is prepared by filling a highly hydrated mud 12 into a permeable bag 11. The dewatering bag 1 is laid on the laying surface 2 of the ground to perform dehydration, but if the laying surface 2 has undulations, the undulating convex portion hits the lower side of the dewatering bag 1 and a concentrated load is partially generated. To do
There is a risk of rupture.
【０００７】そこで、敷設面２の上部に、上面が平面状
の透水層３を形成して地盤処理を行い、脱水袋１の下側
に集中荷重が発生するのを防止し、脱水袋１の破裂防止
を図る。また透水層３は、脱水袋１の破裂防止と共に、
脱水袋１の下側からの脱水効率を良好にする機能も有し
ている。Therefore, a permeable layer 3 having a flat upper surface is formed on the laying surface 2 to perform a ground treatment to prevent a concentrated load from being generated below the dewatering bag 1. Prevent rupture. In addition, the permeable layer 3 prevents the dehydration bag 1 from bursting,
It also has a function of improving the dewatering efficiency from the lower side of the dewatering bag 1.
【０００８】すなわち、脱水袋１内の泥土１２の水分
は、袋体１１の下側を透過して透水層３に浸透すること
によって、外部に排出されるわけである。この透水層３
は、砂層やプラスチックボ−ドドレ−ンあるいは不織布
より形成する。また、泥土１２は流動性を有しているた
め、透水層３の上面の傾斜は、２〜３％にするのが望ま
しい。That is, the water in the mud 12 in the dewatering bag 1 is discharged to the outside by permeating through the lower side of the bag 11 and penetrating into the permeable layer 3. This permeable layer 3
Is formed from a sand layer, a plastic board drain or a non-woven fabric. Further, since the mud 12 has fluidity, the inclination of the upper surface of the permeable layer 3 is desirably set to 2 to 3%.
【０００９】[0009]
【発明の実施の形態２】図２は、透水層３の上面に脱水
袋１と合致する凹部３１を形成し、この凹部３１内に脱
水袋１を嵌め込んで敷設する実施形態である。この場
合、脱水袋１の移動が拘束することができると共に、脱
水終了後には、脱水袋１の下部が透水層３内に沈み込ん
でいるため、脱水袋１の上部を平坦にすることができ
る。[Embodiment 2] FIG. 2 shows an embodiment in which a concave portion 31 corresponding to the dewatering bag 1 is formed on the upper surface of the water-permeable layer 3, and the dewatering bag 1 is fitted and laid in the concave portion 31. In this case, the movement of the dewatering bag 1 can be restrained, and the lower part of the dewatering bag 1 sinks into the permeable layer 3 after the dehydration, so that the upper part of the dewatering bag 1 can be flattened. .
【００１０】[0010]
【発明の効果】本発明は以上説明したようになるため、
次のような効果を得ることができる。 ＜イ＞すなわち、脱水袋と敷設面との間に透水層を介在
させることにより地盤処理を行うため、確実に脱水袋の
保護が図れると共に、脱水袋の下側からの脱水効率を向
上させることができ、脱水袋内の泥土の含水を速やかに
かつ均一に脱水することができる。従って、脱水袋の作
製時間の短縮と、品質の向上を図ることが可能となる。Since the present invention has been described above,
The following effects can be obtained. <B> That is, since the ground treatment is performed by interposing a water permeable layer between the dewatering bag and the laying surface, the dewatering bag can be reliably protected and the dewatering efficiency from the lower side of the dewatering bag can be improved. The water content of the mud in the dewatering bag can be quickly and uniformly dewatered. Therefore, it is possible to shorten the time required for producing the dewatering bag and to improve the quality.
【００１１】＜ロ＞透水層に形成した凹部に脱水袋を嵌
め込んで敷設することによって、脱水袋を拘束して移動
防止ができ、盛土などの施工に用いた場合には、盛土全
体の強度を高めることができる。<B> By fitting a dewatering bag into the recess formed in the water-permeable layer and laying it, the dewatering bag can be restrained and prevented from moving, and when used for embankment or the like, the strength of the entire embankment can be reduced. Can be increased.
【図１】 本発明の実施の形態１の説明図FIG. 1 is an explanatory diagram of Embodiment 1 of the present invention.
【図２】 本発明の実施の形態２の説明図FIG. 2 is an explanatory diagram of Embodiment 2 of the present invention.
フロントページの続き (73)特許権者 000112093 ヒロセ株式会社 大阪府大阪市西淀川区中島２丁目３番87 号 (72)発明者 三木 博史 茨城県つくば市大字旭１番地 建設省土 木研究所内 (72)発明者 山田 哲也 茨城県つくば市大字旭１番地 建設省土 木研究所内 (72)発明者 千田 昌平 東京都台東区台東１丁目６番４号 財団 法人土木研究センター内 (72)発明者 和田 信昭 東京都台東区台東１丁目６番４号 財団 法人土木研究センター内 (72)発明者 高橋 勇 東京都中央区日本橋本町３丁目３番６号 三菱建設株式会社内 (72)発明者 小久保 裕 栃木県那須郡西那須野町四区町1534−１ 五洋建設株式会社技術研究所内 (72)発明者 城所 育雄 東京都江東区木場２丁目17番12号 ヒロ セ株式会社内 (56)参考文献 特開 平６−330514（ＪＰ，Ａ) 特開 平２−157099（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) E02B 3/04Continuing from the front page (73) Patentee 000112093 Hirose Co., Ltd. 2-387 Nakajima, Nishiyodogawa-ku, Osaka-shi, Osaka (72) Inventor Hiroshi Miki 1 Asahi, Oaza, Tsukuba-shi, Ibaraki Pref. Inventor Tetsuya Yamada 1 Asahi, Asahi, Tsukuba, Ibaraki Pref., Japan Public Works Research Institute, Ministry of Construction (72) Inventor Shohei Senda 1-6-4, Taito, Taito-ku, Tokyo Japan Civil Engineering Research Center (72) Inventor, Nobuaki Wada 1-6-4 Taito, Taito-ku, Tokyo Inside the Civil Engineering Research Center (72) Inventor Isamu 3-3-6 Nihonbashi Honcho, Chuo-ku, Tokyo Inside Mitsubishi Construction Corporation (72) Inventor Yutaka Kokubo Tochigi 153-1, Yoyo-ku, Nishinasuno-machi, Nasu-gun Goyo Construction Co., Ltd.Technical Research Institute (72) Inventor Ikuo Shirosho 2--17-12 Kiba, Koto-ku, Tokyo Hirose Corporation (56) References JP Hei 6-330514 (JP, A) JP-A-2-157,099 (JP, A) (58) Field (Int.Cl. 6 , DB name) E02B 3/04
Claims (6)
た脱水袋を地盤上に敷設して脱水袋内の泥土の脱水を行
う際に、 前記脱水袋と地盤敷設面との間に透水層を介在させるこ
とを特徴とした、 脱水袋の敷設場所における地盤の処理および袋の保護方
法。When laying a dewatering bag prepared by filling mud in a water-permeable bag body on the ground to dewater mud in the dewatering bag, the dewatering bag is placed between the dewatering bag and the ground laying surface. A method of treating the ground and protecting bags at a place where a dewatering bag is laid, characterized by interposing a permeable layer.
する、請求項１に記載の脱水袋の敷設場所における地盤
の処理および袋の保護方法。2. The method according to claim 1, wherein the permeable layer has an upper surface formed in a flat shape, and the ground is treated at the place where the dewatering bag is laid and the bag is protected.
部内に嵌め込んで敷設する、請求項１に記載の脱水袋の
敷設場所における地盤の処理および袋の保護方法。3. The method according to claim 1, wherein the dewatering bag is laid by being fitted into a recess formed in the water-permeable layer.
至３のいずれかに記載の脱水袋の敷設場所における地盤
の処理および袋の保護方法。4. The method according to claim 1, wherein the permeable layer comprises a sand layer.
ンより成る、請求項１乃至３のいずれかに記載の脱水袋
の敷設場所における地盤の処理および袋の保護方法。5. The method according to claim 1, wherein the permeable layer is a plastic board drain.
The method for treating the ground and protecting the bag at the place where the dewatering bag is laid according to any one of claims 1 to 3, comprising:
乃至３のいずれかに記載の脱水袋の敷設場所における地
盤の処理および袋の保護方法。6. The method according to claim 1, wherein the water-permeable layer is made of a nonwoven fabric.
4. The method for treating the ground and protecting the bag at the place where the dewatering bag is laid according to any one of claims 3 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5996496A JP2759263B2 (en) | 1996-02-22 | 1996-02-22 | Ground treatment and bag protection method at the place where dewatering bags are laid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5996496A JP2759263B2 (en) | 1996-02-22 | 1996-02-22 | Ground treatment and bag protection method at the place where dewatering bags are laid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09228339A JPH09228339A (en) | 1997-09-02 |
| JP2759263B2 true JP2759263B2 (en) | 1998-05-28 |
Family
ID=13128370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5996496A Expired - Lifetime JP2759263B2 (en) | 1996-02-22 | 1996-02-22 | Ground treatment and bag protection method at the place where dewatering bags are laid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2759263B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4754973B2 (en) * | 2006-01-20 | 2011-08-24 | 株式会社ピーエス三菱 | Bagging dewatering method |
-
1996
- 1996-02-22 JP JP5996496A patent/JP2759263B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09228339A (en) | 1997-09-02 |
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