JP2000325907A - Material for aquitard and method for constructing aquitard layer - Google Patents
Material for aquitard and method for constructing aquitard layerInfo
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- JP2000325907A JP2000325907A JP11143444A JP14344499A JP2000325907A JP 2000325907 A JP2000325907 A JP 2000325907A JP 11143444 A JP11143444 A JP 11143444A JP 14344499 A JP14344499 A JP 14344499A JP 2000325907 A JP2000325907 A JP 2000325907A
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- Prior art keywords
- water
- impermeable
- aquitard
- layer
- granulator
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えば廃棄物の最
終処分場における表面遮水工の構築に用いられる、難透
水性材及びそれを用いた難透水層の構築方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water-impermeable material used for, for example, construction of a surface impervious work in a final disposal site of waste and a method of constructing a water-impermeable layer using the same.
【０００２】[0002]
【従来の技術】廃棄物の最終処分場、具体的には陸上埋
立の場合の管理型処分場においては、有害物質を含む浸
出水により地下水が汚染されることを防止するための最
終バリアとして、表面遮水工が設けられる。これは、例
えば処分場の底面及び斜面の地盤上に遮水シートを設
け、さらにその上に不透水層（難透水層）を構築してな
るものである。かかる難透水層の構築には、例えば粘性
土や透水性を低くした改良土など、具体的には１ｍ3 の
現地発生土や砂に対し２００〜５０ｋｇ程度のベントナ
イトと所定量の水とを現地にて混合した不透水性土質材
が、一般に用いられる。難透水層は、かかる不透水性土
質材を敷き均し転圧して構築されるものであり、これに
より確実な遮水性能が発揮される。2. Description of the Related Art In a final disposal site for waste, more specifically, in a managed disposal site for landfill, as a final barrier for preventing groundwater from being contaminated by leachate containing harmful substances, Surface impermeable works will be provided. This is, for example, provided by providing a water-impervious sheet on the bottom and slope ground of a disposal site, and further constructing an impermeable layer (a poorly permeable layer) thereon. To construct such a poorly permeable layer, for example, about 200 to 50 kg of bentonite and a predetermined amount of water are applied to 1 m 3 of locally generated soil or sand, such as clayey soil or improved soil with reduced water permeability. Is generally used. The water-impermeable layer is constructed by spreading and rolling the impervious soil material, thereby exhibiting reliable water-blocking performance.
【０００３】[0003]
【発明が解決しようとする課題】しかし、前記不透水性
土質材には、自然堆積材である現地発生土を用いて不
透水性土質材を製作しているため、透水係数にバラツキ
が大きく、一定の品質（十分な難透水性）を確保するの
が難しい、前記各材料を現地にて混合して不透水性土
質材を製作しているため、特に水の量の調整が難しく、
よって十分な転圧強度を確保するのが難しい、前記各
材料を混合してなる不透水性土質材では、浸出水に含ま
れる有害物質の吸着に関してはほとんど期待できない、
という問題があった。However, since the impermeable soil material is manufactured using locally generated soil that is a natural sedimentary material, the impermeable soil material has a large variation in permeability. It is difficult to ensure a certain quality (sufficient water-permeability). Since the above materials are mixed locally to produce a water-impermeable soil material, it is particularly difficult to adjust the amount of water.
Therefore, it is difficult to secure sufficient compaction strength, in the impermeable soil material obtained by mixing the above-mentioned materials, it is hardly expected to adsorb harmful substances contained in the leachate,
There was a problem.
【０００４】そこで、本発明は、一定の品質（十分な難
透水性）が確保でき、十分な転圧強度が確保でき、さら
に浸出水に含まれる有害物質の吸着も期待できるよう
な、難透水性材及び難透水層の構築方法を提供すること
を課題とする。[0004] Therefore, the present invention provides a water-impervious material which can ensure a certain quality (sufficient water-permeability), a sufficient rolling strength, and can also be expected to adsorb harmful substances contained in leachate. An object of the present invention is to provide a method for constructing a conductive material and a poorly permeable layer.
【０００５】[0005]
【課題を解決するための手段】本発明は、前記課題を達
成すべく提供されるものであり、その請求項１に係る発
明は（例えば図１参照）、『１００重量部の石炭灰１１
と５〜２０重量部のベントナイト１２とを予め混合して
なる混合粉体１３に、１０〜３０重量部の水１４を噴霧
しつつ、造粒機１５において団子状に造粒してなり、含
水率が２０〜３０％であることを特徴とする、難透水性
材１０。』である。Means for Solving the Problems The present invention is provided to achieve the above object, and the invention according to claim 1 (see, for example, FIG. 1) is described in "100 parts by weight of coal ash 11
And 10 to 30 parts by weight of water 14 are sprayed on a mixed powder 13 previously mixed with 5 to 20 parts by weight of bentonite 12 and granulated in a granulator 15 in a dumpling form. The water-impermeable material 10 having a rate of 20 to 30%. ].
【０００６】かかる難透水性材によれば、所定量の材
料を造粒機において混合するので、最適な混合状態とな
り、一定の品質（十分な難透水性）が確保できると共に
十分な転圧強度が確保でき、材料として砂に代えて石
炭灰を用いるので、ポーラスであり、よって浸出水に含
まれる有害物質の吸着を図ることができ、含水率が２
０〜３０％の団子状に造粒するので、施工の際に材料の
粉体が舞い上がることがなく、よって施工現場での粉塵
公害の発生がない。According to such a water-impermeable material, a predetermined amount of the material is mixed in the granulator, so that an optimum mixing state can be obtained, a certain quality (sufficient water-impermeability) can be ensured, and a sufficient compaction strength is obtained. Since coal ash is used in place of sand as a material, it is porous, so that harmful substances contained in leachate can be adsorbed, and the water content is 2%.
Since granulation is carried out in a 0-30% dumpling shape, the powder of the material does not soar during construction, so that no dust pollution occurs at the construction site.
【０００７】また、その請求項２に係る発明は（例えば
図２参照）、『請求項１に記載の難透水性材１０を用
い、該難透水性材１０を敷き均し転圧する工程を数層に
分けて繰り返すことを特徴とする、難透水層３０の構築
方法。』である。ここで、「数層に分けて」とは、例え
ば厚さ３０ｃｍ程度の難透水層３０Ａ，３０Ｂ，３０Ｃ
…に分けて、を意味する。The invention according to claim 2 (see, for example, FIG. 2) is based on the following problem: “The step of using the water-impermeable material 10 according to claim 1 and laying the water-impermeable material 10 and rolling it down is a few steps. A method for constructing the water-impermeable layer 30, wherein the method is repeated by dividing into layers. ]. Here, “divided into several layers” means, for example, the impervious layers 30A, 30B, 30C having a thickness of about 30 cm.
Divided into ...
【０００８】かかる難透水層の構築方法によれば、十分
な転圧強度が確保されている前記難透水性材を用いるの
で、転圧による造成が可能であり、数層に分けて構築さ
れるので、転圧力が確実に行き渡る。According to the method for constructing a water-impermeable layer, since the water-impervious material having a sufficient compaction strength is used, it can be formed by rolling and can be constructed in several layers. Therefore, the rolling pressure is surely distributed.
【０００９】[0009]
【発明の実施の形態】以下、本発明に係る難透水性材及
び難透水層の構築方法における好適な実施の形態に関
し、図面を参照しつつ詳細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a water-impermeable material and a method for constructing a water-impermeable layer according to the present invention will be described below in detail with reference to the drawings.
【００１０】まず、図１を参照しつつ、難透水性材１０
に関し、（１）材料、（２）製造方法、（３）性状の順
に説明を行う。First, referring to FIG.
(1) Materials, (2) Manufacturing method, and (3) Properties will be described in this order.
【００１１】（１）材料 難透水性材１０は、１００重量部の石炭灰１１と、５〜
２０重量部のベントナイト１２と、１０〜３０重量部の
水１４と、を含むものである。(1) Material The water-impermeable material 10 comprises 100 parts by weight of coal ash 11 and 5 to 5 parts by weight.
It contains 20 parts by weight of bentonite 12 and 10 to 30 parts by weight of water 14.
【００１２】ここで石炭灰１１とは、石炭火力発電所の
ボイラで微粉炭を燃焼させる際に産するものである。石
炭灰１１は、その構造上、空隙が多くポーラスであり、
その空隙に微細な有害物質を吸着する。この石炭灰１１
には、ボイラと煙突の間（煙道）に設けた集塵機によっ
て排ガス中に含まれている微粒子状の灰分を集めた「フ
ライアッシュ」を代表とし、ボイラの底部に自然落下し
た「クリンカアッシュ」や、節炭器の下部で熱交換によ
る排ガスの冷却によって固化した「シンダーアッシュ」
が含まれる。このようにポーラス性能を有する石炭灰１
１を用いることで、浸出水に含まれる有害物質の吸着を
図ることができる。Here, the coal ash 11 is produced when pulverized coal is burned in a boiler of a coal-fired power plant. Coal ash 11 is porous due to its structure with many voids.
Fine harmful substances are adsorbed in the voids. This coal ash 11
A typical example is "Flyash", which collects fine ash contained in exhaust gas by a dust collector installed between the boiler and the chimney (flue). And "Cinder Ash" solidified by cooling the exhaust gas by heat exchange at the bottom of the economizer
Is included. Coal ash 1 having such a porous performance
By using 1, it is possible to adsorb harmful substances contained in the leachate.
【００１３】またベントナイト１２とは、モンモリロナ
イトを主鉱物とする微細粘土で、火山灰のガラス質部分
が分解して生成したものである。このベントナイト１２
は、石炭灰１１と混合して造粒を可能とするために、バ
インダーとして用いられるものである。またベントナイ
ト１２は、難透水性材１０に要求される品質（難透水
性）を調整するために、その添加量を調節して用いられ
るものである。表１は、ベントナイトの添加量を調節し
た場合における、難透水性材の造粒性及び透水係数（配
合実験の結果）を示すものである。ここで、ベントナイ
トを添加しないケース１（湿った石炭灰のみを突き固め
た状態）においては、造粒が不可であり、また透水係数
が１０-5オーダであるため十分な難透水性が得られない
旨が示されている。The bentonite 12 is a fine clay mainly composed of montmorillonite, and is formed by decomposing a glassy portion of volcanic ash. This bentonite 12
Is used as a binder for mixing with coal ash 11 to enable granulation. The bentonite 12 is used by adjusting the amount of the bentonite 12 to adjust the quality (impermeability) required of the poorly permeable material 10. Table 1 shows the granulation property and the water permeability coefficient (results of the mixing experiment) of the poorly permeable material when the amount of bentonite was adjusted. Here, in case 1 in which bentonite was not added (in a state where only wet coal ash was compacted), granulation was not possible, and sufficient water permeability was obtained because the water permeability was of the order of 10 -5. Is indicated.
【００１４】[0014]
【表１】 [Table 1]
【００１５】かかる石炭灰１１とベントナイト１２は、
難透水性材１０の造粒後の性状が均質になるように、予
め混合されて混合粉体１３とされる。さらに水１４は、
混合粉体１３を粒子化するための練り混ぜ媒体となるも
のであり、粉塵の発生を防止するものである。The coal ash 11 and the bentonite 12 are
The impervious material 10 is mixed in advance into a mixed powder 13 so that the properties after granulation are uniform. In addition, water 14
It serves as a kneading medium for turning the mixed powder 13 into particles, and prevents generation of dust.
【００１６】ここで、前記の各材料の分量は、配合実験
の結果（表１参照）により求められた最適値であり、難
透水性材１０が、一定の品質（十分な難透水性）を確保
でき、転圧強度を十分に確保でき、浸出水に含まれる有
害物質の吸着が良好に行われるように、決定されたもの
である。なお、条件によっては、砂等の他の材料を添加
することも可能である。Here, the amount of each of the above-mentioned materials is an optimum value obtained from the result of a blending experiment (see Table 1), and the water-impermeable material 10 has a certain quality (sufficient water-impermeability). It has been determined so that it can secure sufficient rolling compaction strength and can adsorb harmful substances contained in leachate well. Depending on conditions, other materials such as sand can be added.
【００１７】（２）製造方法 難透水性材１０は、混合粉体１３に水１４を噴霧しつ
つ、造粒機１５において造粒されてなるものである。(2) Manufacturing Method The water-impermeable material 10 is formed by granulating in a granulator 15 while spraying water 14 onto the mixed powder 13.
【００１８】ここで造粒機１５は、図１（ｂ）に示すよ
うに、装置の土台であるフレーム１５ａと、フレーム１
５ａに対し傾斜して支持される回転可能な傾斜ドラム１
５ｂと、傾斜ドラム１５ｂの上部に亘されるビーム１５
ｃと、ビーム１５ｃから傾斜ドラム１５ｂ内に向けて垂
下される複数のスクレーパ１５ｄと、傾斜ドラム１５ｂ
の傾斜下方側に開口するシュート１５ｅと、を含むもの
である。Here, as shown in FIG. 1 (b), the granulator 15 comprises a frame 15a as a base of the apparatus and a frame 1a.
Rotatable inclined drum 1 supported inclined with respect to 5a
5b and a beam 15 extending over the inclined drum 15b
c, a plurality of scrapers 15d hanging down from the beam 15c into the inclined drum 15b, and an inclined drum 15b
And a chute 15e opening downward.
【００１９】かかる造粒機１５を用いた難透水性材１０
の製造方法を、図１（ａ）（ｂ）を参照しつつ説明す
る。該製造方法は、以下の工程を含むものである。 １００重量部の石炭灰１１と、５〜２０重量部のベン
トナイト１２とを、予め混合して、混合粉体１３とす
る。 回転する傾斜ドラム１５ｂ内に、混合粉体１３を投入
する。すると混合粉体１３は、傾斜ドラム１５ｂの回転
及びスクレーパ１５ｄとの接触により攪拌される。 攪拌される混合粉体１３に、１０〜３０重量部の水１
４を噴霧する。すると混合粉体１３は、含水率の高い小
粒となり、その周辺に乾粉が付着することにより、粒径
が増大する。 含水率が２０〜３０％で所望の粒径の団子状に造粒さ
れた難透水性材１０を、シュート１５ｅから排出する。The water-impermeable material 10 using such a granulator 15
Will be described with reference to FIGS. 1 (a) and 1 (b). The manufacturing method includes the following steps. 100 parts by weight of coal ash 11 and 5 to 20 parts by weight of bentonite 12 are mixed in advance to form a mixed powder 13. The mixed powder 13 is charged into the rotating inclined drum 15b. Then, the mixed powder 13 is stirred by the rotation of the inclined drum 15b and the contact with the scraper 15d. 10 to 30 parts by weight of water 1 is added to the mixed powder 13 to be stirred.
Spray 4 Then, the mixed powder 13 becomes small particles having a high water content, and the dry powder adheres to the periphery thereof, so that the particle size increases. The poorly permeable material 10 having a water content of 20 to 30% and having a desired particle size and formed into a dumpling shape is discharged from the chute 15e.
【００２０】このように、所定量の材料を造粒機１５に
おいて混合することで、難透水性材１０が最適な混合状
態となり、一定の品質（十分な難透水性）が確保できる
と共に十分な転圧強度が確保できる。なお、造粒機１５
の構成及び難透水性材１０の製造方法は、前記のものに
は限られず、例えば、造粒機は、加湿した混合粉体１３
に混合作用を与えて造粒する造粒機であって容器の回転
を伴わない攪拌型のものでも良く、製造方法は、該攪拌
型造粒機を用いるものでも良い。As described above, by mixing a predetermined amount of material in the granulator 15, the water-impermeable material 10 is in an optimum mixing state, so that a certain quality (sufficient water-impermeability) can be ensured and a sufficient amount can be ensured. Rolling strength can be secured. The granulator 15
The method of manufacturing the water-impermeable material 10 is not limited to that described above.
May be a granulator that gives a mixing action to granulate, and may be a stirring type that does not involve rotation of a container, and may be a manufacturing method using the stirring type granulator.
【００２１】（３）性状 難透水性材１０は、団子状に造粒され、含水率が２０〜
３０％のものである。ここで、団子状に造粒するのは、
仮に砂状に造粒すると、石炭灰１１の特徴であるポーラ
ス性能が損なわれるからである。また、含水率が２０〜
３０％となるようにするのは、施工の際に材料の粉体が
舞い上がることがなく、施工現場での粉塵公害が発生し
ないようにするためである。かかる難透水性材１０は、
後述するような難透水層３０を構築する盛土材として用
いられる他に、種々の用途に用いることができる。(3) Properties The water-impermeable material 10 is granulated in a dumpling shape and has a water content of 20 to
30%. Here, granulation in a dumpling shape
This is because if the particles are granulated into sand, the porous performance characteristic of the coal ash 11 is impaired. In addition, the water content is 20 to
The reason for setting it to 30% is to prevent the powder of the material from rising during construction and to prevent dust pollution at the construction site. Such a water-impermeable material 10 is
In addition to being used as an embankment material for constructing the water-impermeable layer 30 as described below, it can be used for various applications.
【００２２】次に、図２を参照しつつ、難透水層３０の
構築方法に関し、（ａ）敷き均し作業、（ｂ）転圧作
業、（ｃ）繰り返し作業（図示外）の順に説明を行う。
ここでの難透水層３０の構築方法は、前記の難透水性材
１０を盛土材として用い、例えば最終処分場の表面遮水
工を構築する場合を示す。Next, with reference to FIG. 2, the method of constructing the water-impermeable layer 30 will be described in the order of (a) spreading work, (b) rolling work, and (c) repetitive work (not shown). Do.
The method of constructing the water-impermeable layer 30 here shows a case where the water-impermeable material 10 is used as an embankment material and, for example, a surface impervious work at a final disposal site is constructed.
【００２３】（ａ）敷き均し作業 まず、処分場の底面及び斜面の地盤２０上に遮水シート
２１を設け、さらにその上に、ダンプトラック２５で運
搬した難透水性材１０を撒き出し、撒き出した難透水性
材１０をブルドーザー２６により均一な厚さに敷き均
す。難透水性材１０の敷き均し厚さは約３０ｃｍが適当
である。ここで、難透水性材１０は、含水率が２０〜３
０％の団子状に造粒されているので、施工の際に粉体が
舞い上がることがなく、施工現場での粉塵公害の発生が
ない。(A) Spreading work First, a water impermeable sheet 21 is provided on the ground 20 on the bottom and slope of the disposal site, and the impervious material 10 transported by the dump truck 25 is scattered thereon. The scattered water-impermeable material 10 is spread by a bulldozer 26 to a uniform thickness. The spread thickness of the water-impermeable material 10 is suitably about 30 cm. Here, the water-impermeable material 10 has a water content of 20 to 3
Since it is granulated in the form of 0% dumpling, the powder does not soar during construction and there is no dust pollution at the construction site.
【００２４】（ｂ）転圧作業 次に、敷き均した難透水性材１０を転圧機２７により転
圧し締め固めて、一層目の難透水層３０Ａを構築する。
ここで、難透水性材１０は、所定量の材料を造粒機１５
において混合されているので、最適な混合状態となって
おり、十分な転圧強度が確保されている。また、難透水
性材１０の一層当たりの敷き均し厚さは約３０ｃｍなの
で、転圧力が確実に行き渡り、全厚に亘り十分に転圧さ
れ締め固められる。(B) Rolling Work Next, the spreadable impervious material 10 is rolled and compacted by the rolling machine 27 to form the first impervious layer 30A.
Here, the water-impermeable material 10 is obtained by adding a predetermined amount of material to a granulator 15.
, The mixture is in an optimum mixing state, and a sufficient rolling compaction strength is secured. Further, since the spread thickness per layer of the water-impermeable material 10 is about 30 cm, the rolling pressure is surely spread, and the rolling is sufficiently rolled and compacted over the entire thickness.
【００２５】（ｃ）繰り返し作業 最後に、前記敷き均し作業及び転圧作業を繰り返すこと
により、二層目の難透水層３０Ｂ，三層目の難透水層３
０Ｃ…という具合に数層に分けて難透水層３０を構築す
る。ここで、難透水性材１０は、所定量の材料を造粒機
１５において混合されているので、最適な混合状態とな
っており、一定の品質（十分な難透水性）が確保されて
いる。また、難透水性材１０は、ポーラス性能を有する
石炭灰１１を用いているので、構築後の難透水性層３０
において、浸出水に含まれる有害物質の吸着を図ること
ができる。(C) Repetitive work Finally, by repeating the spreading work and the compaction work, the second layer of water-impermeable layer 30B and the third layer of water-impermeable layer 3
The hardly permeable layer 30 is constructed by dividing into several layers, such as 0C. Here, since the water-impermeable material 10 has a predetermined amount of material mixed in the granulator 15, it is in an optimum mixing state, and a certain quality (sufficient water-impermeability) is secured. . In addition, since the coal impervious material 10 uses the coal ash 11 having porous performance, the impervious layer 30 after the construction is used.
In this method, the harmful substances contained in the leachate can be adsorbed.
【００２６】[0026]
【発明の効果】以上の説明のように構成される本発明に
係る難透水性材は、所定量の材料を造粒機において混
合するので、最適な混合状態となり、一定の品質（十分
な難透水性）が確保できると共に十分な転圧強度が確保
でき、材料として石炭灰を用いるので、ポーラスであ
り、よって浸出水に含まれる有害物質の吸着を図ること
ができ、含水率が２０〜３０％の団子状に造粒するの
で、施工の際に材料の粉体が舞い上がることがなく、よ
って施工現場での粉塵公害の発生がない、という顕著な
効果を奏する。The water-impermeable material according to the present invention, which is constituted as described above, mixes a predetermined amount of material in a granulator, so that it is in an optimum mixing state and has a certain quality (sufficient difficulty). Water permeability) and sufficient compaction strength can be ensured, and since coal ash is used as the material, it is porous, so that harmful substances contained in leachate can be adsorbed, and the water content is 20 to 30. %, So that there is no remarkable effect that the powder of the material does not soar during the construction, and that there is no dust pollution at the construction site.
【００２７】また、以上の説明のように構成される本発
明に係る難透水層の構築方法は、十分な転圧強度が確保
されている前記難透水性材を用いるので、転圧による造
成が可能であり、数層に分けて構築されるので、転圧力
が確実に行き渡る、という顕著な効果を奏する。In the method for constructing a water-impermeable layer according to the present invention configured as described above, since the water-impervious material having a sufficient compaction strength is used, formation by compaction can be performed. Since it is possible and is constructed in several layers, there is a remarkable effect that the rolling pressure is surely distributed.
【図１】（ａ）は難透水性材の製造方法を示す概念図で
あり、（ｂ）は造粒機を示す正面図である。FIG. 1A is a conceptual diagram showing a method for producing a poorly permeable material, and FIG. 1B is a front view showing a granulator.
【図２】難透水層の構築作業を示す概念図であり、
（ａ）は敷き均し作業を示し、（ｂ）は転圧作業を示
す。FIG. 2 is a conceptual diagram illustrating a construction operation of a poorly permeable layer;
(A) shows the spreading work, and (b) shows the rolling work.
１０ 難透水性材 １１ 石炭灰 １２ ベントナイト １３ 混合粉体 １４ 水 １５ 造粒機 ２０ 地盤 ２１ 遮水シート ２５ ダンプトラック ２６ ブルドーザー ２７ 転圧機 ３０ 難透水層 REFERENCE SIGNS LIST 10 impervious material 11 coal ash 12 bentonite 13 mixed powder 14 water 15 granulator 20 ground 21 waterproof sheet 25 dump truck 26 bulldozer 27 compactor 30 impervious layer
───────────────────────────────────────────────────── フロントページの続き (72)発明者 天野 史郎 東京都新宿区西新宿一丁目25番１号 大成 建設株式会社内 Ｆターム(参考） 4D004 BB04 CA01 CA03 CA14 CA15 CB50 CC03 CC11 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Shiro Amano 1-25-1, Nishishinjuku, Shinjuku-ku, Tokyo Taisei Corporation F-term (reference) 4D004 BB04 CA01 CA03 CA14 CA15 CB50 CC03 CC11
Claims (2)
のベントナイトとを予め混合してなる混合粉体に、１０
〜３０重量部の水を噴霧しつつ、造粒機において団子状
に造粒してなり、含水率が２０〜３０％であることを特
徴とする、難透水性材。A mixed powder obtained by previously mixing 100 parts by weight of coal ash and 5 to 20 parts by weight of bentonite is mixed with 10 parts by weight.
A poorly water-permeable material obtained by granulating in a granulator in a dumpling shape while spraying water of 30 parts by weight with a water content of 20 to 30%.
難透水性材を敷き均し転圧する工程を数層に分けて繰り
返すことを特徴とする、難透水層の構築方法。2. A method for constructing a water-impermeable layer, comprising using the water-impermeable material according to claim 1, laying down the water-impermeable material, flattening and rolling the same into several layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11143444A JP2000325907A (en) | 1999-05-24 | 1999-05-24 | Material for aquitard and method for constructing aquitard layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11143444A JP2000325907A (en) | 1999-05-24 | 1999-05-24 | Material for aquitard and method for constructing aquitard layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000325907A true JP2000325907A (en) | 2000-11-28 |
Family
ID=15338850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11143444A Pending JP2000325907A (en) | 1999-05-24 | 1999-05-24 | Material for aquitard and method for constructing aquitard layer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000325907A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003010809A (en) * | 2001-07-02 | 2003-01-14 | Shimizu Corp | Water-stopping layer and method for forming the same |
| JP2008223359A (en) * | 2007-03-13 | 2008-09-25 | Kajima Corp | Spraying construction method |
| JP2009035886A (en) * | 2007-07-31 | 2009-02-19 | Kajima Corp | Compaction soil layer forming method |
| JP2009233558A (en) * | 2008-03-27 | 2009-10-15 | Taisei Corp | Construction method of low water permeable layer |
| JP2014104426A (en) * | 2012-11-28 | 2014-06-09 | Hazama Ando Corp | Low percolation layer structure of waste disposal facility, and construction method for the same |
| JP2019025376A (en) * | 2017-07-25 | 2019-02-21 | 太平洋セメント株式会社 | Suppression method of dust emission from clinker ash |
| CN111893298A (en) * | 2020-08-20 | 2020-11-06 | 核工业北京化工冶金研究院 | Heap leaching treatment process for low-grade uranium ore rich in gypsum |
-
1999
- 1999-05-24 JP JP11143444A patent/JP2000325907A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003010809A (en) * | 2001-07-02 | 2003-01-14 | Shimizu Corp | Water-stopping layer and method for forming the same |
| JP4716208B2 (en) * | 2001-07-02 | 2011-07-06 | 清水建設株式会社 | Water shielding layer and method for forming the same |
| JP2008223359A (en) * | 2007-03-13 | 2008-09-25 | Kajima Corp | Spraying construction method |
| JP2009035886A (en) * | 2007-07-31 | 2009-02-19 | Kajima Corp | Compaction soil layer forming method |
| JP2009233558A (en) * | 2008-03-27 | 2009-10-15 | Taisei Corp | Construction method of low water permeable layer |
| JP2014104426A (en) * | 2012-11-28 | 2014-06-09 | Hazama Ando Corp | Low percolation layer structure of waste disposal facility, and construction method for the same |
| JP2019025376A (en) * | 2017-07-25 | 2019-02-21 | 太平洋セメント株式会社 | Suppression method of dust emission from clinker ash |
| CN111893298A (en) * | 2020-08-20 | 2020-11-06 | 核工业北京化工冶金研究院 | Heap leaching treatment process for low-grade uranium ore rich in gypsum |
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