JPS6160921A - Method of constructing impervious wall - Google Patents
Method of constructing impervious wallInfo
- Publication number
- JPS6160921A JPS6160921A JP18045084A JP18045084A JPS6160921A JP S6160921 A JPS6160921 A JP S6160921A JP 18045084 A JP18045084 A JP 18045084A JP 18045084 A JP18045084 A JP 18045084A JP S6160921 A JPS6160921 A JP S6160921A
- Authority
- JP
- Japan
- Prior art keywords
- bedrock
- steel sheet
- trench
- water
- asphalt
- 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.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
Description
【発明の詳細な説明】
く■〉発明の目的
〔産業上の利用分野］
本発明は、締切り工法等で、埋立“Ｃ造成した地盤堤防
等の中に遮水壁として鋼矢板を打ちこむ、遮水壁の建込
み方法に関するものである。[Detailed Description of the Invention] Object of the Invention [Field of Industrial Application] The present invention is a method for driving steel sheet piles as an impermeable wall into a ground embankment created by reclaimed land using a cofferdam method or the like. It concerns the method of constructing water walls.
［従来の技術］
従来、鋼矢板先端と岩盤の間の止水を必要とする仮締切
り工法等では、埋立て造成後ポーリングして鋼矢板を打
設し、その債、止水のために鋼矢板の先端にセメントミ
ルク等を注入している。[Conventional technology] Conventionally, in temporary cofferdam construction methods that require water stoppage between the tip of steel sheet piles and bedrock, steel sheet piles are driven by polling after land reclamation, and steel sheet piles are used to stop water in order to stop water. Cement milk, etc. is injected into the tip of the sheet pile.
［本発明が解決しようとする問題点］
上記のような従来の遮水壁の建込み方法には次のような
問題点が存在する。[Problems to be Solved by the Present Invention] The following problems exist in the conventional method of constructing a water-shielding wall as described above.
（イ）埋立て造成後にポーリングを行ない、ざらに鋼矢
板打設の俊セメントミルクの注入を行なう等施工に手間
がかかり工期が長くなる。(b) After the landfill is created, polling is carried out, and cement milk is injected into the rough driving of the steel sheet piles, which takes time and takes a long time.
（ロ）遮水壁は元来堤防等の止水性を高めるためのもの
である。(b) Impermeable walls are originally intended to improve the water-stopping properties of embankments, etc.
しかし鋼矢板を岩盤面まで打ち込んだだけでは、締切矢
板と岩盤との境界からの浸水や透水を防ぐことかできず
、遮水壁としての効果が半減してしまう。However, simply driving the steel sheet piles up to the bedrock surface will not be able to prevent water from seeping in or permeating through the boundary between the cofferdam sheet piles and the bedrock, and its effectiveness as a water-blocking wall will be halved.
（ハ）地悠との境界地点からの浸水や透水をできるだけ
防止するには、岩盤内にまで鋼矢板を打ち込まなくては
ならない。(c) In order to prevent water intrusion and permeation from the boundary point with Jiyu as much as possible, steel sheet piles must be driven deep into the bedrock.
しかし堅い岩盤の場合は、無理に打設すると鋼矢板の先
端が潰れて鋼矢板間の間隔が聞いてしまい、かえって浸
水を容易にする等施工が困難になる。However, in the case of hard rock, if the steel sheet piles are forcibly driven, the ends of the steel sheet piles will be crushed and the spacing between the steel sheet piles will be distorted, making construction more difficult as it will make it easier for water to seep in.
（ニ）止水のための注入材の注入は埋立て後の地中で行
なうため、注入状況を目視等で確認することができない
。(d) Since the injection of the injection material to stop water is carried out underground after the landfill, the injection status cannot be visually confirmed.
従って鋼矢板打設後注入する注入材が、注入目的以外の
場所に入ってしまう等ロスが生じる場合がある。Therefore, there is a possibility that the injection material injected after the steel sheet pile is placed may end up in a place other than the purpose of injection, resulting in loss.
［発明の目的］
本発明は以上のような点に鑑み成されたもので、岩盤と
の境界地点や岩盤内からの浸水や透水を防ぐことができ
、遮水壁による堤防等の止水性を一店高めることが可能
であり、ざらに工期が短い、遮水壁の建込み方法を提供
することを目的とする。[Purpose of the Invention] The present invention has been made in view of the above points, and can prevent water from entering or permeating from the boundary with the bedrock or from within the bedrock, and improves the water-stopping properties of embankments, etc. by impermeable walls. The purpose of the present invention is to provide a method of constructing a water-shielding wall that can increase the height of one store and has a relatively short construction period.
すなわち本発明は、遮水壁として鋼矢板先端を岩盤に根
入りして止水を計る工法において、所定の岩盤にｉｎを
構築し、構内に粘弾性挙動を示す材料を打設し、打設し
た粘弾性挙動を示す材料内に鋼矢板を打込むことを特徴
とする、進水壁の建込み方法に関するしのである。In other words, the present invention is a construction method in which the tip of a steel sheet pile is embedded into bedrock as a water-shielding wall to stop water. This paper relates to a method for erecting a launching wall, which is characterized by driving steel sheet piles into a material that exhibits a certain viscoelastic behavior.
＜［＞発明の構成
［問題点を解決するための手段］
本発明の遮水壁の建込み方法は、水底の計画ラインの岩
盤面に溝を構築し、その構内に粘弾性挙動を示す材料を
打設し、その後埋立て造成を行ない、粘弾性挙動を示す
材料を打設した溝に鋼矢板を打設する方法である。<[>Structure of the Invention [Means for Solving the Problems] The method for constructing an impermeable wall of the present invention is to construct a trench on the rock face along the planned line of the water bottom, and to install a material exhibiting viscoelastic behavior in the trench. This is a method in which steel sheet piles are driven into trenches filled with material that exhibits viscoelastic behavior, followed by reclamation and construction.
（イ）櫟による溝の構築（第２図）
所定の水底の岩ＩＧ上に礫を嵌状に打入して***帯１を
構築する。(B) Constructing a trench using a turret (Figure 2) A raised zone 1 is constructed by inserting gravel into a predetermined rock IG at the bottom of the water.
この***帯１を２本構成することにより両者の間に溝２
を形成する。By configuring two raised bands 1, there is a groove 2 between them.
form.
（ロ）アスファルトマスチック打設（第３図）次にトレ
ミー管等を使用して溝２内に粘弾性挙動を示す材料とし
てアスファルトマスチック（以）［アスファルト」とい
う）３を打設する。(b) Casting asphalt mastic (Fig. 3) Next, asphalt mastic (hereinafter referred to as "asphalt") 3, which is a material exhibiting viscoelastic behavior, is cast in the groove 2 using a tremie pipe or the like.
その石は***帯１の上辺までとし、溝２にいっばいに充
填する。The stones should be filled up to the top of the raised zone 1 and filled into the groove 2 all at once.
打設する材料の鑑は構築した溝２の容量により予め把握
することができ、さらに目視やテレビカメラ等によって
打設状態を確認することができる。The type of material to be poured can be known in advance from the capacity of the constructed groove 2, and the condition of the material to be poured can be confirmed visually or with a television camera.
なお本施工例ではアスファルトを打設したが、打設する
材料はアスファルトに限らず、粘弾性挙動を示す材料な
らよいのである。Although asphalt was cast in this construction example, the material to be cast is not limited to asphalt, but any material exhibiting viscoelastic behavior may be used.
（ハ）埋立て造成（第４図）
溝２内のアスファルト３の充填が終了した後、両方の隆
起帯１を含む地域Ｂに水面Ｓから所定の高さになるよう
盛土４を施し埋立て造成を行なう。(c) Reclamation (Fig. 4) After filling trenches 2 with asphalt 3, fill area B, which includes both raised zones 1, with embankment 4 to a predetermined height above water surface S and reclaim. Perform the creation.
（ニ）鋼矢板の建込み（第４図）
盛土４の堤頂部４１から鋼矢板５をドロップハンマー等
で打込む。(d) Erection of steel sheet piles (Fig. 4) Drive the steel sheet piles 5 from the embankment crest 41 of the embankment 4 with a drop hammer or the like.
そして鋼矢板５を打設する位置は、鋼矢板５の先端が両
***帯１間の溝２内に入込む位置とする。The steel sheet pile 5 is placed at a position where the tip of the steel sheet pile 5 enters the groove 2 between the raised bands 1.
したがって鋼矢板５は盛土４を貫通して溝２内で硬化し
ているアスファルト３の底面まで打ち込まれる。Therefore, the steel sheet pile 5 is driven through the embankment 4 to the bottom surface of the asphalt 3 hardened in the trench 2.
なお硬化しているアスファルト３に鋼矢板５を打ｒｓに
よって打込むと、硬化しているアスファルト３にクラッ
クが入ることが考えられる。Note that if the steel sheet pile 5 is driven into the hardened asphalt 3 by hammering, cracks may occur in the hardened asphalt 3.
アスファルト３にクラックが入るとそのクランクから水
が浸透してしまう恐れがある。If there are cracks in Asphalt 3, there is a risk that water will seep through the cracks.
しかし実験の結果、鋼矢板５の打込みによって一時的に
発生したクラックは、時間の経過と共にアスファルト３
が塑性流動を起こして短時間のうちに閉じることが判明
した。However, as a result of the experiment, the cracks that occurred temporarily due to the driving of the steel sheet piles 5 gradually changed over time to the asphalt 3.
was found to cause plastic flow and close within a short period of time.
本実施例では鋼矢板５の打込みは、***帯１及びアスフ
ァルト３に盛土４を施してから行うが、盛土４を施す以
前に７スフアルト３に直接鋼矢板５を打込むことも勿論
可能である。In this embodiment, the steel sheet piles 5 are driven after the embankment 4 is applied to the raised zone 1 and the asphalt 3, but it is of course possible to drive the steel sheet piles 5 directly into the asphalt 3 before applying the embankment 4. .
（ホ）その他の実施例１
上記の実施例ぐはアスファルト３を打設するための溝２
を***帯１を構築することによって構成したが、岩盤に
直接溝２を掘削してアスファルト３を打設する場合も考
えられる。(E) Other Examples 1 The above examples are grooves 2 for pouring asphalt 3.
was constructed by constructing a raised zone 1, but it is also conceivable to directly excavate a groove 2 in the bedrock and cast asphalt 3.
（へ）その他の実施例２
上記実施例では２本の***帯１間にアスファルト３を打
設したが、一本の***帯１の一方の斜面に接してアスフ
ァルト３を打設して行なう場合も考えられる。(F) Other Example 2 In the above example, the asphalt 3 was placed between two raised bands 1, but when asphalt 3 is placed in contact with one slope of one raised band 1. can also be considered.
要は打込む鋼矢板５の先端がアスファルト３内に打込ま
れていればよいのである。In short, it is sufficient that the tip of the steel sheet pile 5 to be driven is driven into the asphalt 3.
［作用］ （１１図）
アスファルト３が打設された苛２は櫟等の***帯１で形
成されている。[Function] (Fig. 11) The slab 2 on which the asphalt 3 is placed is formed by a raised band 1 such as a tree.
そこで溝２内に打設されたアスファルト３は***帯１の
開開のクラックＣに浸透して硬化する。The asphalt 3 cast in the groove 2 penetrates into the opening cracks C of the raised zone 1 and hardens.
ざらにアスファルト３は溝２底面の岩ＩＧに存在するク
ラックＣ内にも浸透して硬化する。The rough asphalt 3 also penetrates into the crack C existing in the rock IG at the bottom of the groove 2 and hardens.
したがって鋼矢板５の先端付近の岩盤Ｇやその境界付近
に浸透してきた水は上記のアスファルト３によってそれ
以上の浸透を阻止される。Therefore, the asphalt 3 prevents the water that has penetrated into the bedrock G near the tip of the steel sheet pile 5 or the boundary thereof from further infiltrating.
すなわち第１図に示すように、***帯１や岩盤Ｇ等のク
ラックＣにアスファルト３が浸透して硬化したことによ
って、鋼矢板５先端付近に止水ゾーンｌができることに
なる。That is, as shown in FIG. 1, when the asphalt 3 penetrates into cracks C such as the raised zone 1 and the bedrock G and hardens, a water stop zone l is formed near the tip of the steel sheet pile 5.
＜ｌ［＞発明の効果
本弁明は以上説明したようになるので次のような効果を
期待することができる。<l[> Effects of the Invention Since the present defense has been explained above, the following effects can be expected.
（イ）本発明の施工手順は溝の構築、アスファルト等の
打設、埋立て造成、鋼矢板の打設の順である。(a) The construction procedure of the present invention is in the order of constructing a trench, placing asphalt, etc., creating a landfill, and placing steel sheet piles.
従って従来のように埋立て造成後のポーリング、さらに
は鋼矢板打設後の止木材の注入を必要としないので工期
を短縮することかでき、経済性にすぐれた工法である。Therefore, unlike conventional methods, it does not require polling after the construction of a landfill, nor does it require the injection of retainers after the steel sheet piles are placed, so the construction period can be shortened, making it an extremely economical construction method.
（ロ）アスファルト等は構築した構内に打設される。(b) Asphalt, etc. will be placed within the constructed premises.
従ってその打設ｍを予め把握することが可能であり、ざ
らに打設時の状態を目視やテレビカメラ等によって確認
することができる。Therefore, it is possible to know in advance the pouring m, and the condition at the time of pouring can be roughly confirmed visually or by using a television camera or the like.
（ハ）岩盤のクランクにもアスファルトが浸透、硬化し
ているので、岩盤内にまで鋼矢板を打込む必要がない。(c) Since the asphalt has penetrated and hardened into the rock crank, there is no need to drive steel sheet piles deep into the bedrock.
従って岩盤の強度に左右されずに施工することができる
。Therefore, construction can be carried out without being affected by the strength of the bedrock.
（ニ）***帯や＠盤等のクラックにアスファルトが浸透
して硬化したことによって、鋼矢板先端付近に止水ゾー
ンができる。(d) When asphalt penetrates cracks such as raised zones and @boards and hardens, a water stop zone is created near the tip of the steel sheet pile.
そこで従来止水性に問題のあった岩盤と盛土との境界付
近の止水性が向上する。This improves the water-stopping properties near the boundary between the bedrock and the embankment, where water-stopping properties have traditionally been problematic.
したがって盛土部分での止水とともに、岩盤との境界地
点や岩盤内からの浸水や透水を防ぐことができ、遮水壁
としての効果を充分あげることができる。Therefore, it is possible not only to stop water in the embankment, but also to prevent water from seeping in or permeating from the boundary with the bedrock or from within the bedrock, making it fully effective as a water-blocking wall.
第１図：本発明による遮水壁の先端付近の説明図第２〜
４図：本発明の遮水壁の建込み方法の説明図
１；***帯 ２：溝 ３ニアスフアルド４：盛土 ５：
ｉｌｌ矢板 Ｃ：クラック Ｇ：岩盤Ｓ：水面 ２：止
水ゾーンFigure 1: Explanatory diagram of the vicinity of the tip of the water-shielding wall according to the present invention.
Figure 4: Explanatory diagram of the method of constructing a water-shielding wall of the present invention 1; Raised zone 2: Groove 3 Niassfald 4: Embankment 5:
ill Sheet pile C: Crack G: Bedrock S: Water surface 2: Water stop zone
Claims (1)
工法において、 所定の岩盤に溝を構築し、 構内に粘弾性挙動を示す材料を打設し、 打設した粘弾性挙動を示す材料内に鋼矢板を打込むこと
を特徴とする、 遮水壁の建込み方法。[Claims of patents] In a construction method in which the tip of a steel sheet pile is embedded into bedrock as a water-shielding wall to stop water, a groove is constructed in a predetermined bedrock, and a material exhibiting viscoelastic behavior is poured into the premises. A method for constructing a water-shielding wall, which is characterized by driving steel sheet piles into a material that exhibits viscoelastic behavior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18045084A JPS6160921A (en) | 1984-08-31 | 1984-08-31 | Method of constructing impervious wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18045084A JPS6160921A (en) | 1984-08-31 | 1984-08-31 | Method of constructing impervious wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6160921A true JPS6160921A (en) | 1986-03-28 |
Family
ID=16083439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18045084A Pending JPS6160921A (en) | 1984-08-31 | 1984-08-31 | Method of constructing impervious wall |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6160921A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929142A (en) * | 2015-07-09 | 2015-09-23 | 中国水利水电第七工程局有限公司 | Combined cofferdam structure and building construction method thereof |
| CN110080230A (en) * | 2019-03-18 | 2019-08-02 | 广西大学 | A kind of structure and its construction method handling bottom of foundation ditch water burst |
-
1984
- 1984-08-31 JP JP18045084A patent/JPS6160921A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929142A (en) * | 2015-07-09 | 2015-09-23 | 中国水利水电第七工程局有限公司 | Combined cofferdam structure and building construction method thereof |
| CN110080230A (en) * | 2019-03-18 | 2019-08-02 | 广西大学 | A kind of structure and its construction method handling bottom of foundation ditch water burst |
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