JPH073069B2 - Underwater embankment construction method - Google Patents
Underwater embankment construction methodInfo
- Publication number
- JPH073069B2 JPH073069B2 JP62269365A JP26936587A JPH073069B2 JP H073069 B2 JPH073069 B2 JP H073069B2 JP 62269365 A JP62269365 A JP 62269365A JP 26936587 A JP26936587 A JP 26936587A JP H073069 B2 JPH073069 B2 JP H073069B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- embankment
- cement
- sand
- underwater
- 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 - Fee Related
Links
- 238000010276 construction Methods 0.000 title claims description 20
- 239000000463 material Substances 0.000 claims description 71
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 55
- 239000004568 cement Substances 0.000 claims description 24
- 239000004576 sand Substances 0.000 claims description 22
- 239000002562 thickening agent Substances 0.000 claims description 16
- 239000002518 antifoaming agent Substances 0.000 claims description 12
- 239000010881 fly ash Substances 0.000 description 8
- 238000003911 water pollution Methods 0.000 description 8
- 238000004898 kneading Methods 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 238000000926 separation method Methods 0.000 description 6
- 238000007796 conventional method Methods 0.000 description 4
- 239000010419 fine particle Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000011398 Portland cement Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 239000011400 blast furnace cement Substances 0.000 description 1
- 238000009430 construction management Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 description 1
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 description 1
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 description 1
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Landscapes
- Underground Or Underwater Handling Of Building Materials (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は水中盛土構築工法に係るものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an underwater embankment construction method.
（従来の技術） 水中に盛土を構築する従来工法として、砂または土砂等
を単独で投入する工法があり、盛土に強度、密度を必要
とする場合、地盤改良工事を行っている。(Prior Art) As a conventional construction method for constructing an embankment in water, there is a construction method in which sand, earth and sand, etc. are individually charged. When the embankment requires strength and density, ground improvement work is performed.
第５図乃至第８図は前記従来工法の一例を示すもので、
砂、または土砂等の盛土材料（ａ）を底開き土運船
（ｂ）で押船（ｃ）を介して所定水域に曵航し、（第５
図参照）前記土運船（ｂ）の底部より盛土材料（ａ）を
直接水中に投入して、（ｄ）で示すように水底（ｅ）に
堆積せしめ、（第６図参照）かくして水中盛土（ｆ）を
構築したのち、（第７図参照）第８図に示すうに水中盛
土（ｆ）の地盤改良を行なうものである。5 to 8 show an example of the conventional method,
An embankment material (a) such as sand or earth and sand is opened at the bottom and towed to a predetermined water area by an earth carrier (b) via a pusher (c).
(Refer to the figure) The embankment material (a) is directly put into the water from the bottom of the earthmoving ship (b) and deposited on the water bottom (e) as shown in (d) (see FIG. 6). After constructing (f), the ground of the underwater embankment (f) is improved as shown in FIG. 8 (see FIG. 7).
図中（ｇ）は地盤改良船、（ｈ）は改良盛土である。In the figure, (g) is a ground improvement ship and (h) is an improved embankment.
（発明が解決しようとする問題点） 前記従来の工法においては、砂、土砂が単独で水中に投
入されるものであるが、砂、土砂は粘着力がないため、
水に接触すると砂、土砂の粒子が分離する。(Problems to be solved by the invention) In the conventional construction method, sand and earth and sand are put into water alone, but since sand and earth and sand have no adhesive force,
Upon contact with water, sand and sediment particles separate.
このように分離した粒子のうち、微粒子分は水中に浮遊
して水質汚濁を生じる。また潮流等の水の流れがある場
合には、前記微粒子分が流失して材料損失が極めて大き
くなる。Of the particles thus separated, the fine particles are suspended in water to cause water pollution. In addition, when there is a flow of water such as a tidal current, the fine particles are washed away, resulting in an extremely large material loss.
更に前記従来工法においては、盛土に強度や密度が要求
される場合地盤改良工事が必要となり、しかも改良盛土
の品質は均一性に欠ける。Further, in the conventional method, ground improvement work is required when the embankment is required to have strength and density, and the quality of the improved embankment lacks uniformity.
更にまた前記従来工法によればこのように、盛立後に地
盤改良工事を行なわざるを得ないので工期が長びき、工
費が嵩む。Furthermore, according to the above-mentioned conventional method, the ground improvement work must be performed after the rising, and thus the construction period is prolonged and the construction cost is increased.
（問題点を解決するための手段） 本発明はこのような問題点を解決するために提案された
もので、砂、セメント系固化材料及び増粘剤並に水をセ
ミドライ状態に混練した盛土材料を、水面近傍より直接
水中に投入することを特徴とする水中盛土構築工法に係
るものである。(Means for Solving Problems) The present invention has been proposed in order to solve such problems, and is an embankment material obtained by kneading sand, a cement-based solidifying material, a thickener, and water in a semi-dry state. It is related to the underwater embankment construction method, which is characterized in that it is directly put into the water from near the water surface.
（作 用） 本発明において予め気中において砂、セメント系固化材
料及び増粘剤並に水をセミドライ状態に混練して盛土材
料を調整し、同盛土材料を水面近傍より水中に投入する
ものであり、前記増粘剤により各材料の粒子相互間が粘
着し、盛土材料を水中に自由落下させても容易に材料分
離を生起しない。(Operation) In the present invention, sand, cement-based solidifying material, and thickening agent are mixed in water in a semi-dry state in advance in the air to prepare the embankment material, and the embankment material is put into water from near the water surface. The thickener causes particles of each material to adhere to each other, and does not easily cause material separation even when the embankment material is allowed to fall freely in water.
更に前記盛土材料に含まれたセメント系固化材料によっ
て、水中盛土に所要の強度が賦与されるものである。Further, the cement-based solidifying material contained in the embankment material imparts required strength to the underwater embankment.
本発明はまた砂、セメント系固化材料、増粘剤及び消泡
剤並に水をセミドライ状態に混練した盛土材料を、水面
近傍より直接水中に投入することを特徴とする水中盛土
構築工法に係るもので、消泡剤を添加したことによっ
て、前記盛土材料中に含まれた小さな泡が盛土材料の着
底後、水面に浮上する際にセメントや砂等の微粒子を抱
き込んで上昇し水質汚濁を助長するが、前記盛土材料に
含まれた消泡剤によってこの泡を消去して水質汚濁を防
止する。The present invention also relates to an underwater embankment construction method characterized in that sand, a cement-based solidifying material, a thickener and a defoaming agent as well as a banking material in which water is kneaded in a semi-dry state are directly charged into water from near the water surface. With the addition of an antifoaming agent, the small bubbles contained in the embankment material rise to the surface of the embankment material as it floats on the surface of the embankment material, embracing fine particles such as cement and sand, and rising. However, the defoaming agent contained in the embankment material eliminates the bubbles to prevent water pollution.
（実施例） 以下本発明を実施例について説明する。(Example) Hereinafter, the present invention will be described with reference to Examples.
気中において予め、砂、セメント系固化材料としてセメ
ント、フライアッシュ、増粘剤、水を混練してセミドラ
イ状に練り上げる。In the air, sand, cement as a cement-based solidifying material, fly ash, a thickener, and water are kneaded in advance and kneaded into a semi-dry state.
下記表−１は前記盛土材料の配合例を示す。Table 1 below shows an example of the composition of the embankment material.
次に前記各材料の実施例を挙げる。 Next, examples of each of the above materials will be described.
セメント：普通ポルトランドセメントを標準とするが、
早強ポルトランドセメント、フライアッシュセメント、
高炉セメントも使用される。Cement: Ordinary Portland cement is standard,
Early strength Portland cement, fly ash cement,
Blast furnace cement is also used.
フライアッシュ：市販のJIS規格品を標準とするが、セ
メントと予め混合されたフライアッシュセメントを使用
することもできる。盛土の強度条件によっては使用を省
略されることもある。Fly ash: A commercially available JIS standard product is used as a standard, but fly ash cement premixed with cement can also be used. Depending on the strength of the embankment, it may be omitted.
増粘剤：メチルセルローズまたはヒドロキシプロピル・
メチルセルローズが使用され、例えば「マーポローズ90
MP−100000」（商品名：松本油脂製薬株式会社製造）の
如き高粘度のものが使用される。Thickener: Methylcellulose or hydroxypropyl
Methylcellulose is used, for example "Marporose 90
MP-100000 ”(trade name: manufactured by Matsumoto Yushi-Seiyaku Co., Ltd.) having a high viscosity is used.
水：真水、海水の双方とも使用可能で、現場近くで入手
可能なものが使用される。Water: Both fresh water and seawater can be used, and those available near the site are used.
次に前記各材料の機能について説明する。Next, the function of each material will be described.
セメント系固化剤 水中盛土に所要の強度を賦与するもので、特にフライア
ッシュを添加する場合は長期強度が期待され、セメント
量を節約してpHの上昇による水質汚濁を低減する。Cement-based solidifying agent Provides the required strength to the underwater embankment. Especially when fly ash is added, long-term strength is expected, and the amount of cement is saved to reduce water pollution due to an increase in pH.
増粘剤 増粘剤は粉状であるが吸水すると粘着力が増大し、従っ
て砂、セメント系固化剤及び増粘剤を一旦空練りして十
分に混合した後、水を加えて混練すると、増粘剤によっ
て各盛土材料の粒子相互間が粘着し、水中に自由落下さ
せた場合の材料分離を低減する。Thickener The thickener is a powder, but its tackiness increases when it absorbs water. Therefore, sand, cement-based solidifying agent and thickener are once kneaded and sufficiently mixed, and then water is added and kneaded. The thickener causes particles of each embankment material to adhere to each other and reduces material separation when free-falling in water.
なお盛土材料が同一配合であっても、混合水量の増減に
よって盛土材料の練り上がり状態が粒状から大きな塊状
まで変化する。適当な水量を加えることにより水質汚濁
も少なく、盛土の成層状態も空隙や塊が残らず、層状に
堆積するような最適の練り上り状態が得られる。Even if the embankment material has the same composition, the kneading state of the embankment material changes from granular to large lumps as the amount of mixed water increases and decreases. By adding an appropriate amount of water, water pollution is reduced, and the embankment is stratified, leaving no voids or lumps, and providing an optimal kneading state in which it accumulates in layers.
砂 安価で供給量が多いため、主材料として用いる。Sand It is used as the main material because it is cheap and the supply is large.
水 増粘剤の粘着作用を発現させるとともに、セメント系固
化材料の機能を生起せしめるために使用する。It is used to develop the function of a cement-based solidifying material as well as to develop the adhesive action of a water thickener.
特に水の混合量は盛土材料の練り上り状態、水中分離抵
抗性、成層状態、盛土の密度等に大きく影響するので、
最適な混合水量を選定することが重要である。In particular, the amount of water mixed greatly affects the kneading state of the embankment material, the resistance to separation in water, the stratified state, the density of the embankment, etc.
It is important to select the optimum amount of mixed water.
第１図乃至第４図は前記盛土材料を使用した水中盛土構
築工法の実施例を示し、陸上における盛土材料製造プラ
ント（１）において前記したように砂、セメント、フラ
イアッシュ及び増粘剤並に水を混練してセミドライ状の
盛土材料（２）を調製し、同盛土材料（２）がセミドラ
イ状であることを利用してベルトコンベヤ（３）を介し
て底開き土運船（４）に積載し、（第１図参照）同船
（４）を押船（５）によって曳航し、（第２図参照）盛
土施工個所に到達すると底開き土運船（４）の底蓋を開
き、前記盛土材料（２）を水中に投入する。（第３図参
照）水中に投入された盛土材料（２）は水の抵抗によっ
て緩徐に水中を落下し、水底地盤（５）上に（ｄ）で示
すように堆積する。1 to 4 show an example of an underwater embankment construction method using the embankment material, and as described above in the embankment material manufacturing plant (1) on land, sand, cement, fly ash, and thickener as well as A semi-dry embankment material (2) is prepared by kneading water, and by utilizing the fact that the embankment material (2) is semi-dry material, a bottom open earth carrier (4) is passed through the belt conveyor (3). After loading, the ship (4) is towed by the pusher (5) (see Fig. 1), and when the embankment construction point is reached (see Fig. 2), the bottom lid of the open soil carrier (4) is opened and the embankment is opened. Material (2) is poured into water. (See FIG. 3) The embankment material (2) thrown into the water slowly falls in the water due to the resistance of the water, and is deposited on the water bottom ground (5) as shown in (d).
以下前記工程を反覆して水中盛土（７）を構築する。Hereinafter, the above steps are repeated to construct an underwater embankment (7).
前記したように盛土材料（２）を水中に投入した際、同
材料（２）中の増粘剤によって盛土材料（２）の各粒子
相互間が粘着され、同材料の水中分離抵抗性が増大し、
水質汚濁が低減し、材料の流失が防止される。As described above, when the embankment material (2) is put into water, the thickening agent in the material (2) causes the particles of the embankment material (2) to adhere to each other, increasing the water separation resistance of the material. Then
Water pollution is reduced and the material is prevented from being washed away.
更に前記盛土材料（２）中のセメント、フライアッシュ
によって、水中盛土（７）に所要の強度が賦与され、水
中盛土構築後における地盤改良工事が不要となる。Furthermore, the cement and fly ash in the embankment material (2) imparts the required strength to the underwater embankment (7), which eliminates the need for ground improvement work after construction of the underwater embankment.
なお前記盛土材料の運搬に箱型土運船を使用してもよ
く、この場合、盛土施工個所にバックホー付きベルトコ
ンベヤ船、及びベルトコンベヤとホッパーとを搭載した
作業台船を配置し、箱型土運船内の盛土材料をバックホ
ーとベルトコンベヤとによって作業台船上のベルトコン
ベヤに移し替え、ホッパーから水中に投入する。この場
合、ホッパーを用いずに、ベルトコンベヤから直接水中
に盛土材料を投入することも可能である。A box-type earth carrier may be used to convey the embankment material, and in this case, a belt conveyor ship with a backhoe and a work carrier equipped with a belt conveyor and a hopper are arranged at the embankment construction site to form a box-type ship. The embankment material in the soil carrier is transferred to the belt conveyor on the work platform ship by the backhoe and the belt conveyor, and is put into the water from the hopper. In this case, the embankment material can be directly put into the water from the belt conveyor without using the hopper.
また盛土材料は陸上プラントの他に、水中盛土施工個所
近傍にプラント船を配置して同船上で製造するようにし
てもよく、この場合、プラント船からそのままベルトコ
ンベヤで盛土材料を運搬し、水中に直接投入する。In addition to the onshore plant, the embankment material may be placed on a plant ship near the underwater embankment construction site and manufactured on the same ship. Directly into.
次に本発明の他の実施例を挙げる。Next, another embodiment of the present invention will be described.
気中において予め、前記実施例における砂、セメント系
固化材料としてセメント、フライアッシュ、増粘剤、水
に加えて、消泡剤を混練してセミドライ状に練り上げ
る。In the air, a defoaming agent is kneaded in advance in addition to sand, cement as a cement-based solidifying material, fly ash, a thickener, and water in the above-mentioned examples to knead in a semi-dry state.
下記表−２は前記盛土材料の配合例を示す。Table 2 below shows an example of blending the embankment material.
次に前記各材料中、下記消泡剤の外は前記実施例と同一
である。 Next, in each of the above materials, except for the following defoaming agent, the same as in the above example.
消泡剤 市販の消泡剤であれば何れも使用可能であるが、一例と
して非イオン性界面活性剤を無機粉末に吸着させたもの
で、「SNデフオーマー14−HP」（商品名：サンノプコ株
式会社製造）が使用される。Defoaming agent Any commercially available defoaming agent can be used, but as an example, a nonionic surfactant is adsorbed on an inorganic powder, "SN Defomar 14-HP" (trade name: San Nopco stock Company manufacturing) is used.
盛土材料に含まれた小さな泡が盛土材料の着底後に水面
へ浮上する際、セメントや砂等の微粒子分を抱き込んで
上昇し、水質汚濁を助長するが、この泡を消泡剤によっ
て消去する。When the small bubbles contained in the embankment material float to the surface of the water after landing on the embankment material, they entrap particles such as cement and sand and rise to promote water pollution, but this foam is erased by an antifoaming agent. To do.
なお消泡剤を加えない場合、最適水量の範囲が狭いが、
消泡剤を加えることによって、最適水量の範囲を可成り
拡げることができ、施工管理が容易になるとともに、安
定した品質の盛土を構築することができる。If you do not add a defoaming agent, the range of optimum water amount is narrow,
By adding the defoaming agent, the range of the optimum amount of water can be expanded considerably, the construction management becomes easy, and the embankment with stable quality can be constructed.
なお前記表−２に示す配合の盛土材料を使用した水中盛
土構築工法は前記実施例と同一につき、説明を省略す
る。The underwater embankment construction method using the embankment material having the composition shown in Table 2 is the same as that in the above-mentioned embodiment, and the description thereof is omitted.
（発明の効果） 本発明によれば前記したように、水中盛土を構築するの
に当り、砂、セメント系固化材料、及び増粘剤並に水を
セミドライ状態に混練した盛土材料を予め調整し、同盛
土材料を水面近傍から水中に直接投入することにより、
盛土材料が水中を自由落下する際の材料分離を抑止し、
水質汚濁を減少するとともに、材料の流失を低減し、セ
メント系固化材料によって水中盛土に所要の強度が賦与
されることによって、盛立後の地盤改良工事を不要なら
しめ、工期を短縮し、工費を節減しうるものである。(Effects of the Invention) According to the present invention, as described above, in constructing an underwater embankment, sand, a cement-based solidifying material, and a thickening material as well as a kneading material in a semi-dry state are mixed in advance in a semi-dry state. By directly putting the same embankment material into the water from near the water surface,
Prevents material separation when the embankment material falls freely in water,
By reducing the water pollution, reducing the material loss, and imparting the required strength to the underwater embankment with the cement-based solidifying material, it is possible to eliminate the need for ground improvement work after the embankment, shorten the construction period, and reduce the construction cost. Can be saved.
また本発明においては前記盛土材料に消泡剤を加えるこ
とによって、盛土材料に含まれた泡を消去し、水質汚濁
をより確実に抑止するものである。更に本発明によれば
盛土材料の練り上がり状態がセミドライ状であるので、
バージやベルトコンベヤによる運搬、投入が可能となり
作業能率が向上する。Further, in the present invention, by adding an antifoaming agent to the embankment material, the bubbles contained in the embankment material are erased and water pollution is more reliably suppressed. Further, according to the present invention, the kneaded state of the embankment material is semi-dry,
It can be transported and loaded by barges and belt conveyors, improving work efficiency.
更にまた本発明によれば前記したように、盛土材料の水
中分離抵抗性が大で、水面近傍より直接水中に投入でき
るので、特殊な設備を必要とせず、運搬、投入の作業効
率を向上しうるものである。Furthermore, according to the present invention, as described above, since the embankment material has a large resistance to separation in water and can be directly put into water from near the water surface, special equipment is not required, and transportation and loading work efficiency is improved. It is profitable.
第１図乃至第４図は本発明に係る水中盛土構築工法の一
実施例の工程を示す側面図、第５図乃至第８図は従来工
法の工程を示す側面図である。 （１）……盛土材料製造プラント， （２）……盛土材料，（４）……底開き土運船， （５）……水底地盤，（７）……水中盛土1 to 4 are side views showing the steps of one embodiment of the underwater embankment construction method according to the present invention, and FIGS. 5 to 8 are side views showing the steps of the conventional method. (1) …… Filling material manufacturing plant, (2) …… Filling material, (4) …… Open-bottomed earth carrier, (5) …… Floor ground, (7) …… Underwater embankment
───────────────────────────────────────────────────── フロントページの続き (72)発明者 森山 健吉 東京都葛飾区お花茶屋３―10―23 ネオコ ーポ302号 (72)発明者 弘中 義昭 神奈川県厚木市下荻野1476―１ ソルロー マ本厚木218号 (56)参考文献 特開 昭62−55325（ＪＰ，Ａ) 特開 昭64−83723（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenkichi Moriyama 3-10-23 Neocopo 302, Ohanajaya, Katsushika-ku, Tokyo (72) Inventor Yoshiaki Hironaka 1476-1, Shimoogino, Atsugi-shi, Kanagawa Soluma Honatsugi 218 (56) References JP-A-62-55325 (JP, A) JP-A-64-83723 (JP, A)
Claims (2)
をセミドライ状態に混練した盛土材料を、水面近傍より
直接水中に投入することを特徴とする水中盛土構築工
法。1. An underwater embankment construction method characterized in that sand, a cement-based solidifying material, a thickener, and an embankment material in which water is kneaded in a semi-dry state are directly put into water from near the water surface.
剤並に水をセミドライ状態に混練した盛土材料を、水面
近傍より直接水中に投入することを特徴とする水中盛土
構築工法。2. An underwater embankment construction method characterized in that sand, a cement-based solidifying material, a thickening agent, a defoaming agent, and an embankment material in which water is kneaded in a semi-dry state are directly put into water from near the water surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62269365A JPH073069B2 (en) | 1987-10-27 | 1987-10-27 | Underwater embankment construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62269365A JPH073069B2 (en) | 1987-10-27 | 1987-10-27 | Underwater embankment construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01116113A JPH01116113A (en) | 1989-05-09 |
| JPH073069B2 true JPH073069B2 (en) | 1995-01-18 |
Family
ID=17471369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62269365A Expired - Fee Related JPH073069B2 (en) | 1987-10-27 | 1987-10-27 | Underwater embankment construction method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH073069B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100481617B1 (en) * | 2001-12-20 | 2005-04-08 | 우륭유 | Atomizer With a Bellows-Shaped Container Body |
| JP6005424B2 (en) * | 2011-07-12 | 2016-10-12 | 清水建設株式会社 | Landfill method and mixed materials for landfill |
| JP7349692B1 (en) * | 2023-06-08 | 2023-09-25 | Ｊｆｅスチール株式会社 | Method for creating underwater embankment structures |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6065755A (en) * | 1983-09-20 | 1985-04-15 | 電気化学工業株式会社 | Underwater concrete composition |
| JPH0660496B2 (en) * | 1985-09-02 | 1994-08-10 | 株式会社大林組 | How to put soil into water |
| JPH0641691B2 (en) * | 1987-09-25 | 1994-06-01 | 五洋建設株式会社 | Underwater embankment method with self-hardening sand |
-
1987
- 1987-10-27 JP JP62269365A patent/JPH073069B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01116113A (en) | 1989-05-09 |
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