JPS6311713A - Construction of simple cut-off wall - Google Patents
Construction of simple cut-off wallInfo
- Publication number
- JPS6311713A JPS6311713A JP15149686A JP15149686A JPS6311713A JP S6311713 A JPS6311713 A JP S6311713A JP 15149686 A JP15149686 A JP 15149686A JP 15149686 A JP15149686 A JP 15149686A JP S6311713 A JPS6311713 A JP S6311713A
- Authority
- JP
- Japan
- Prior art keywords
- water
- sheet
- groove
- stopping
- water stop
- 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.)
- Granted
Links
- 238000010276 construction Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 59
- 238000000034 method Methods 0.000 claims abstract description 13
- 239000007921 spray Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 description 9
- 238000009412 basement excavation Methods 0.000 description 6
- 239000010426 asphalt Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、止水性を有するシートを地中に埋設して行う
、簡易止水壁の施工方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for constructing a simple water-stopping wall by burying a sheet having water-stopping properties underground.
〈本発明の目的〉
（イ）土砂の掘削量を低減できる、簡易止水壁の施工方
法。<Objective of the present invention> (a) A method for constructing a simple water stop wall that can reduce the amount of earth and sand excavated.
（ロ）施工費の削減を図ることができる、簡易止水壁の
施工方法。(b) A simple method of constructing water-stop walls that can reduce construction costs.
（ハ）継手部の止水性能が高い、簡易止水壁の施工方法
。(c) A method for constructing a simple water-stop wall that has high water-stop performance at joints.
く本発明の構成〉
以下、図面を参照しながら本発明の一実施例について説
明する。Configuration of the Present Invention> An embodiment of the present invention will be described below with reference to the drawings.
（イ）止水原理
本発明は、超高圧水（ウォータージェット）の破壊力を
利用して、細幅の溝を掘削するとともに、開削したこの
溝内に止水部材である止水シートを埋設して止水壁を構
築する止水壁の施工技術である。(a) Water-stopping principle The present invention utilizes the destructive power of ultra-high pressure water (water jet) to excavate a narrow trench, and buries a water-stopping sheet, which is a water-stopping member, in the excavated trench. This is a water cutoff wall construction technology that builds a water cutoff wall.
（ロ）止水シート（第１図）
本発明に使用する止水材は、止水性および耐蝕性に優れ
た薄手のシートであり、例えば防水加工を施した不織布
または樹脂製の可撓性を有するシート等を使用できる。(b) Water-stop sheet (Figure 1) The water-stop material used in the present invention is a thin sheet with excellent water-stop properties and corrosion resistance, such as a waterproof nonwoven fabric or a flexible resin sheet. You can use the sheet that you have.
（ハ）開削手段（第１図）
開削手段としては公知の超高圧水の噴射によるウォータ
ージェット装置を使用する。(c) Cutting means (FIG. 1) As the cutting means, a known water jet device that sprays ultra-high pressure water is used.
先導柱２には、超高圧水を噴出するノズル３を昇降自在
に取り付ける。A nozzle 3 that spouts ultra-high pressure water is attached to the leading pillar 2 so as to be able to rise and fall.
先導柱２としては剛性の鋼柱等を使用できる。As the leading column 2, a rigid steel column or the like can be used.
また、ノズル３を昇降する手段としてはノズル３に走行
機能を持たせて遠隔で走行を操作する等の方法を採用で
きる。Further, as a means for raising and lowering the nozzle 3, a method such as providing the nozzle 3 with a traveling function and controlling the traveling remotely can be adopted.
また、先導柱２の背面側に２枚の板体からなるストッパ
ー４を拡開自在に取り付ける。Further, a stopper 4 made of two plates is attached to the back side of the leading pillar 2 so as to be freely expandable.
このストッパー４は、２つの機能を有する部材であって
、その１つは開削作業中に超高圧水が開削した溝内に逆
流することを防止する機能を有し、もう１つは止水シー
ト１を溝内に引き出して後に到達した側の孔内で係止さ
せるための係止部材として機能する。This stopper 4 is a member that has two functions, one of which is to prevent ultra-high pressure water from flowing back into the excavated groove during excavation work, and the other is a water stopper. It functions as a locking member for pulling out 1 into the groove and locking it in the hole on the side reached later.
に）止水シートの引出し手段
本実施例では、止水シート１を溝内に位置させる方法と
して、止水シート１の端を開削手段に接続して、開削と
並行して水平方向に引き出す方法を採用する。B) Pulling out means for the water stop sheet In this embodiment, the method for positioning the water stop sheet 1 in the groove is to connect the end of the water stop sheet 1 to a cutting means and pull it out horizontally in parallel with the cutting. Adopt.
出水シート１を開削と並行して引き出すには、例えば先
導柱２に止水シート１の自由端を紐等で取り付けて一体
に接続して行うことができる。In order to pull out the water stop sheet 1 in parallel with excavation, the free end of the water stop sheet 1 can be attached to the leading pillar 2 with a string or the like and connected together, for example.
（ホ）施工方法
（１）削孔（第２図）
止水予定の地盤５に、一定間隔毎に孔Ａ、Ｂ・・・を開
孔する。(E) Construction method (1) Drilling holes (Figure 2) Holes A, B, etc. are drilled at regular intervals in the ground 5 where water is to be stopped.
なお、本実施例のように答礼Ａ、Ｂ・・・の孔壁崩壊の
防止を目的として答礼Ａ％Ｂ・・・内に、コンクリート
と塩ビ管の積層体からなる擁壁６で保護する場合もある
。In addition, as in this embodiment, in order to prevent the walls of the holes A, B, etc. from collapsing, the holes A, B, and so on are protected by a retaining wall 6 made of a laminate of concrete and PVC pipes. There is also.
（２）開削の準備
孔Ａ内には、ロール状に巻とった止水シート１を挿入す
る。(2) Insert the water stop sheet 1 wound into a roll into the hole A in preparation for excavation.
このとき、止水シート１の自由端には、ノズル３を昇降
自在に取り付けた先導柱２も一緒に孔Ａ内に挿入する。At this time, the guide post 2 to which the nozzle 3 is movably attached to the free end of the water stop sheet 1 is also inserted into the hole A.
（３）開削作業と止水シートの引き出し地上に配置した
図示しない超高圧水の供給装置の運転を開始してノズル
３から超高圧水を開削方向に向けて噴射する。(3) Excavation work and drawing out the water stop sheet The operation of an ultra-high pressure water supply device (not shown) placed on the ground is started, and ultra-high pressure water is sprayed from the nozzle 3 in the excavation direction.
超高圧水の噴射開始と同時に孔Ａ内のノズル３を上下方
向に昇降させる。Simultaneously with the start of the injection of ultra-high pressure water, the nozzle 3 in the hole A is raised and lowered in the vertical direction.
その結果、孔Ａ内の擁壁６の一部が破壊された後に地盤
５をノズル３や先導柱２が通過できる程度に細幅の溝５
１が開設される。As a result, after a part of the retaining wall 6 in the hole A is destroyed, a narrow groove 5 is formed to the extent that the nozzle 3 and the leading pillar 2 can pass through the ground 5.
1 will be established.
そして、先導柱２を孔Ｂ方向へ移動しながら地ｆｆ１５
を順次開削して、溝５１を延長していく。Then, while moving the leading pillar 2 in the direction of hole B,
The grooves 51 are extended by sequentially drilling.
先導柱２の移動に伴い、先導柱２と一体の止水シート１
が溝５１内に順次引き出される。As the leading pillar 2 moves, the water stop sheet 1 integrated with the leading pillar 2
are sequentially pulled out into the groove 51.
以上の作業を続けながら孔Ｂに達するまで止水シート１
を引き出す。Continue the above steps until you reach hole B with water stop sheet 1.
bring out.
（４）止水シートの埋設（第３図）
止水シート１の自由端が孔Ｂまで達したら、ストッパー
４を広げて孔Ｂに係止させる。(4) Burying the water stop sheet (Figure 3) When the free end of the water stop sheet 1 reaches hole B, spread the stopper 4 and lock it in hole B.
次に先導柱２とノズル３を孔Ｂから引き上げて撤去する
。Next, the leading column 2 and nozzle 3 are pulled up from the hole B and removed.
その結果、止水シート１は両孔Ａ、Ｂ間に張設されたこ
とになる。As a result, the water stop sheet 1 is stretched between both holes A and B.
次に、孔Ａ、Ｂと溝５１の境界部位に水膨潤性ゴム等の
止水材７を介在して、止水シート１を挟持させて、孔Ａ
、Ｂと溝５１間の止水を図る。Next, a water-stop material 7 such as water-swellable rubber is interposed at the boundary between the holes A and B and the groove 51, and the water-stop sheet 1 is sandwiched between the holes A and B.
, B and the groove 51 to stop water.
（５）溝の埋め戻しく第３．５図）
止水シート１が設置された溝５１内には、例えば、深層
部の不透水層５２にはアスファルトやアスファルト乳剤
モルタル等の止水材５３を注入し、さらにその止水材５
３の上方には、土砂５４を埋め戻す。(5) Backfilling the trench (Figure 3.5) In the trench 51 where the water stop sheet 1 is installed, for example, a water stop material 53 such as asphalt or asphalt emulsion mortar is placed in the deep impermeable layer 52. Injected with water stop material 5
3 is backfilled with earth and sand 54.
（６）孔内充填
孔Ｂ以降の孔間にも以上の（１）〜（５）までの工程を
行い止水シート１を埋設する。(6) Hole Filling The above steps (1) to (5) are also performed to embed the water stop sheet 1 between the holes after the hole B.
全ての孔間に止水シート１の埋設作業を終えたら、答礼
Ａ、Ｂ・・・内にアスファルト等の固結材８を流し込む
。After completing the work of embedding the water stop sheet 1 in all the holes, a consolidating material 8 such as asphalt is poured into the holes A, B, . . . .
以上のように止水シート１の両端部は、止水材７．７に
挟持され、しかも固結材８によって埋設されることによ
って、継手部９の止水効果が著しく向上する。As described above, both ends of the water stop sheet 1 are sandwiched between the water stop materials 7.7 and embedded in the consolidation material 8, thereby significantly improving the water stop effect of the joint portion 9.
くその他の実施例１〉
溝５１内に止水シート１を敷設するその他の方法として
例えば、前記実施例と同様にして超高圧水を噴射して溝
５１を開削した後、この溝５１内に止水シート１を上方
から落とし込むことら可能である。Other Example 1> As another method for laying the water stop sheet 1 in the groove 51, for example, after cutting the groove 51 by jetting ultra-high pressure water in the same manner as in the above embodiment, This is possible by dropping the water stop sheet 1 from above.
本実施例の場合、止水シート１は、落とし込む途中で溝
５１の壁面内に引っ掛かることが予想される。In the case of this embodiment, it is expected that the water stop sheet 1 will get caught in the wall surface of the groove 51 while being dropped.
そこで、止水シート１の両端に、剛性のガイド材を取り
付けて止水シート１を落とし込むと溝５１内の壁面との
引っ掛かりを防止して確実に落とし込むことができる。Therefore, by attaching rigid guide members to both ends of the water stop sheet 1 and dropping the water stop sheet 1, it is possible to prevent the water stop sheet 1 from getting caught on the wall surface in the groove 51 and to ensure that the water stop sheet 1 can be dropped.
くその他の実施例２〉
溝５１内に止水シート１を敷設するその他の方法として
は、予め開削した溝５１の溝底に、存くか折り畳んだ止
水シート１を押し込んでおいたものを、引き上げること
によって止水シート１を溝５１内に位置させることも可
能である。Other Example 2> Another method for laying the water stop sheet 1 in the groove 51 is to push the water stop sheet 1, either still or folded, into the bottom of the groove 51 that has been excavated in advance. It is also possible to position the water stop sheet 1 within the groove 51 by pulling it up.
なお、止水シート１を引き上げる方法としては、シート
１の上端にロープを接続しておき、このローブを介して
引き上げることが考えられる。In addition, as a method of pulling up the water stop sheet 1, it is possible to connect a rope to the upper end of the sheet 1 and pull it up via this rope.
く本発明の効果〉
本発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。Effects of the Present Invention> Since the present invention has been described above, the following effects can be expected.
（イ）ウォータージェットを用いて溝を開削することに
より、溝の開削幅を最小限に押さえられるので、施工の
簡易化と施工費の削減を図ることができる。(b) By cutting the groove using a water jet, the width of the groove can be minimized, making it possible to simplify construction and reduce construction costs.
（ロ）止水シートと孔との継手部を水膨潤性ゴム等の止
水材で挟持して止水を図り、さらに孔内に充填するアス
ファルトやアスファルト乳剤モルタル等の固結材に止水
シートを埋没しである。(b) Water is stopped by sandwiching the joint between the water stop sheet and the hole with a water stop material such as water-swellable rubber, and the water is also stopped by the solidifying material such as asphalt or asphalt emulsion mortar filled into the hole. The seat is buried.
従って、継手部の止水効果と耐久力が著しく向上して、
施工の信頼性が高くなる。Therefore, the water-stopping effect and durability of the joint are significantly improved.
Construction reliability increases.
第１図二本発明の一実施例の説明図
第３図二開削作業と止水シートの引き出しを並行して行
っているときの施工の説明図
第３図：開削した溝内に止水シートを埋設するときの施
工の説明図
第４図：各孔内を充填して連続した止水壁を構築したと
きの説明図Fig. 1 2 An explanatory diagram of an embodiment of the present invention Fig. 3 2 An explanatory diagram of construction when excavation work and pulling out of the water stop sheet are performed in parallel Fig. 3: Water stop sheet placed in the excavated groove Figure 4: An explanatory diagram of the construction process when burying
Claims (4)
を開設し、 前記溝内に止水性を有するシートを埋設して各孔間に連
続した止水壁を構築することを特徴とする、 簡易止水壁の施工方法。(1) Open multiple holes in the ground, spray a water jet between adjacent holes to create narrow grooves, and bury a water-stopping sheet in the grooves to create a continuous line between each hole. A method for constructing a simple water-stop wall, which is characterized by constructing a water-stop wall.
シートの端を接続して、溝を開削しながらシートを引き
出して、溝内に止水性を有するシートを埋設することを
特徴とする、特許請求の範囲第１項記載の簡易止水壁の
施工方法。(2) A patent characterized in that the end of the water-stopping sheet is connected to an excavator such as a water jet, the sheet is pulled out while excavating a groove, and the water-stopping sheet is buried in the groove. A method for constructing a simple water-stop wall according to claim 1.
落とし込んで、溝内に止水性を有するシートを埋設する
ことを特徴とする、特許請求の範囲第１項記載の簡易止
水壁の施工方法。(3) A simple water-stopping wall according to claim 1, characterized in that the sheet having water-stopping properties is dropped into the opened groove from above and the sheet having water-stopping properties is buried in the groove. Construction method.
方に引き上げて、溝内に止水性を有するシートを埋設す
ることを特徴とする、特許請求の範囲第１項記載の簡易
止水壁の施工方法。(4) A simple water-stopping wall according to claim 1, characterized in that the water-stopping sheet is pulled upward from the bottom of the opened groove and the water-stopping sheet is buried in the groove. construction method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15149686A JPS6311713A (en) | 1986-06-30 | 1986-06-30 | Construction of simple cut-off wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15149686A JPS6311713A (en) | 1986-06-30 | 1986-06-30 | Construction of simple cut-off wall |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6311713A true JPS6311713A (en) | 1988-01-19 |
| JPH045093B2 JPH045093B2 (en) | 1992-01-30 |
Family
ID=15519770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15149686A Granted JPS6311713A (en) | 1986-06-30 | 1986-06-30 | Construction of simple cut-off wall |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6311713A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5388931A (en) * | 1993-10-18 | 1995-02-14 | Carlson; Robert J. | Cutoff wall system to isolate contaminated soil |
| US7652900B2 (en) | 2005-02-07 | 2010-01-26 | Yamaha Motor Power Products Kabushiki Kaisha | Inverter type AC generator with a zero-crossing detection circuit used to provide a synchronized operation and method of operating the same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5122214A (en) * | 1974-08-19 | 1976-02-21 | Kajima Corp | DODOMESHI SUIHEKIKOHO |
| JPS54119710A (en) * | 1978-03-09 | 1979-09-17 | Obayashi Gumi Kk | Method of construction of underground water shielding layer installation |
| JPS5627653A (en) * | 1979-08-13 | 1981-03-18 | Sekisui Chem Co Ltd | Method for measuring antigen or antibody |
| JPS5634820A (en) * | 1980-01-28 | 1981-04-07 | Kajima Corp | Cofferdam and constructing method thereof |
| JPS5685018A (en) * | 1979-12-12 | 1981-07-10 | Shimizu Constr Co Ltd | Construction of water shielding wall |
-
1986
- 1986-06-30 JP JP15149686A patent/JPS6311713A/en active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5122214A (en) * | 1974-08-19 | 1976-02-21 | Kajima Corp | DODOMESHI SUIHEKIKOHO |
| JPS54119710A (en) * | 1978-03-09 | 1979-09-17 | Obayashi Gumi Kk | Method of construction of underground water shielding layer installation |
| JPS5627653A (en) * | 1979-08-13 | 1981-03-18 | Sekisui Chem Co Ltd | Method for measuring antigen or antibody |
| JPS5685018A (en) * | 1979-12-12 | 1981-07-10 | Shimizu Constr Co Ltd | Construction of water shielding wall |
| JPS5634820A (en) * | 1980-01-28 | 1981-04-07 | Kajima Corp | Cofferdam and constructing method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5388931A (en) * | 1993-10-18 | 1995-02-14 | Carlson; Robert J. | Cutoff wall system to isolate contaminated soil |
| US7652900B2 (en) | 2005-02-07 | 2010-01-26 | Yamaha Motor Power Products Kabushiki Kaisha | Inverter type AC generator with a zero-crossing detection circuit used to provide a synchronized operation and method of operating the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH045093B2 (en) | 1992-01-30 |
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