JPH0453210B2 - - Google Patents
Info
- Publication number
- JPH0453210B2 JPH0453210B2 JP62060683A JP6068387A JPH0453210B2 JP H0453210 B2 JPH0453210 B2 JP H0453210B2 JP 62060683 A JP62060683 A JP 62060683A JP 6068387 A JP6068387 A JP 6068387A JP H0453210 B2 JPH0453210 B2 JP H0453210B2
- Authority
- JP
- Japan
- Prior art keywords
- soil
- synthetic resin
- slope
- resin emulsion
- slope surface
- 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
- 239000000839 emulsion Substances 0.000 claims description 45
- 239000002689 soil Substances 0.000 claims description 39
- 229920003002 synthetic resin Polymers 0.000 claims description 38
- 239000000057 synthetic resin Substances 0.000 claims description 38
- 230000002265 prevention Effects 0.000 claims description 31
- 239000003795 chemical substances by application Substances 0.000 claims description 28
- 239000002245 particle Substances 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 15
- 239000002657 fibrous material Substances 0.000 claims description 12
- 230000006641 stabilisation Effects 0.000 claims description 11
- 238000011105 stabilization Methods 0.000 claims description 11
- 238000005507 spraying Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 230000003449 preventive effect Effects 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 239000004480 active ingredient Substances 0.000 claims description 3
- 239000006228 supernatant Substances 0.000 claims description 3
- 239000000047 product Substances 0.000 claims description 2
- 230000000087 stabilizing effect Effects 0.000 claims description 2
- 239000000701 coagulant Substances 0.000 claims 1
- 238000004162 soil erosion Methods 0.000 description 16
- 230000000694 effects Effects 0.000 description 12
- 239000002344 surface layer Substances 0.000 description 12
- 230000000149 penetrating effect Effects 0.000 description 7
- 238000004898 kneading Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- -1 seeds Substances 0.000 description 5
- 230000003628 erosive effect Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 239000003337 fertilizer Substances 0.000 description 3
- 241000718541 Tetragastris balsamifera Species 0.000 description 2
- 229920002978 Vinylon Polymers 0.000 description 2
- 230000004931 aggregating effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000035784 germination Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- JHPBZFOKBAGZBL-UHFFFAOYSA-N (3-hydroxy-2,2,4-trimethylpentyl) 2-methylprop-2-enoate Chemical compound CC(C)C(O)C(C)(C)COC(=O)C(C)=C JHPBZFOKBAGZBL-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 241000234642 Festuca Species 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 229920002522 Wood fibre Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 230000007226 seed germination Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
Description
〔産業上の利用分野〕
本発明は、法面安定工法に関するものである。
より詳しくは、本発明は、気温等の気候条件に関
係なく、法面表面及び法面表層における土壌の移
動や流失を防止する効果（以下、「土壌流失防止
効果」という。）が常に安定して得られる法面安
定工法に関するものである。
本発明に係る法面安定工法は、道路の開設等に
よつて形成される裸地法面の安定化のために施工
されるものである。
〔従来の技術〕
従来、この種の法面安定工法として、種子、肥
料、土壌改良材などの植生材料や水とともに、ポ
リ酢酸ビニールエマルジヨンやポリアクリル酸エ
ステルエマルジヨン等の合成樹脂エマルジヨンか
らなる土壌流失防止剤を混練し、この混練物を動
力吹付機を用いて法面に吹き付ける種子吹付工法
が提案され、実施されている。
この従来の種子吹付工法では、吹き付け後の水
の蒸発に伴い、合成樹脂エマルジヨンの合成樹脂
成分が繊維質材或いは法面の表面土壌と一体とな
り、土壌流失防止効果を発揮するものである。
このような土壌流失防止効果を発揮する土壌流
失防止剤としては、機能別に大別して被膜型と浸
透型（例えば、特公昭47−47324号公報に記載の
発明）とがある。また、その他にも、ポリ酢酸エ
マルジヨンに、電解質及び／又は親水性溶剤を乳
化粒子が分離し、沈降しても撹拌により容易に分
散する程度に乳化状態を破壊せしめる範囲で添加
することにより得られた樹脂分散液を用いる中間
型ともいえるもの（特公昭47−39163号公報に記
載の発明）がある。
〔発明が解決しようとする問題点〕
被膜型では、合成樹脂成分の殆どが法面の表面
に止まるから、法面表面の保護には適している
が、合成樹脂成分が土壌中に浸透しないので、法
面表層の侵食に対する土壌流失防止効果は低い。
一方、浸透型では、合成樹脂成分の殆どが法面表
層まで浸透するから、法面表層の保護には適して
いるが、合成樹脂成分が法面表面に残存しにくい
ので、法面表面の侵食に対する土壌流失防止効果
は低い。
このように、被膜型及び浸透型には、何れも一
長一短がある。それぞれの短所を補うために、使
用する合成樹脂成分量を多くすることが考えられ
るが、合成樹脂成分量を単に多くするだけでは、
種子の発芽に障害が生じるという別の問題点が発
生する。
また、特公昭47−39163号公報に記載の発明に
係る土壌流失防止剤は、化学的に不安定であり、
吹き付け作業現場における環境条件によつて影響
を受けるので、安定した土壌流失防止効果を得る
ことができない。
〔問題点を解決するための手段〕
本発明者は、上記した従来の種子吹付工法の諸
問題について種々検討を重ねた結果、被膜型及び
浸透型の両性質を兼備した土壌流失防止剤を用い
れば、前記問題点を解決し得るとの知見を得、か
かる知見に基づき本発明を完成するに至つたので
ある。
即ち、本発明に係る法面安定工法は、合成樹脂
エマルジヨンに凝集剤を加えて樹脂固形分を凝集
させた後に上澄液を除去して合成樹脂エマルジヨ
ンの凝集粒子を得、次いで、凝集剤を含まない合
成樹脂エマルジヨンと前記凝集粒子とを混練して
凝集剤を含まない合成樹脂エマルジヨンと前記凝
集粒子との混練物からなる土壌流失防止剤を得、
該土壌流質防止剤を法面安定材基材の有効成分と
して法面に吹き付けることを特徴とするものであ
る。
〔実施例〕と〔作用〕
本発明を、実施例を掲げながら作用とともに説
明する。
本発明に使用する合成樹脂エマルジヨンの凝集
粒子を得るには、酢酸ビニール、アクリル酸エス
テル、メタクリル酸エステル、不飽和カルボン酸
等のモノマーの１種又は２種以上の組み合わせに
よる重合物のエマルジヨン、酢酸ビニールとエチ
レンのコポリマーエマルジヨン、SBRエマルジ
ヨンやNBRエマルジヨン等の固形分50％程度の
合成樹脂エマルジヨンに、硫酸アルミニウム、ポ
リ塩化アルミニウム等の無機凝集剤、或いは、ポ
リアクリルアマイド、ポリエチレンオキサイド等
の有機高分子凝集剤などの凝集剤を添加し、合成
樹脂エマルジヨン中の樹脂固形分を凝集させた
後、上澄液を除去すればよい。
このようにして得た合成樹脂エマルジヨンの凝
集粒子を、凝集剤を含まない合成樹脂エマルジヨ
ンと混練して、凝集剤を含まない合成樹脂エマル
ジヨンと前記凝集粒子との混練物からなる土壌流
失防止剤を得る。凝集剤を含まない合成樹脂エマ
ルジヨンとしては、合成樹脂エマルジヨンの凝集
粒子を得るために使用した合成樹脂エマルジヨン
でもよいし、また、別の合成樹脂エマルジヨンで
もよい。
前記した土壌流失防止剤は、吹き付け作業現場
において、水で希釈することによつて1.0〜15.0
％の樹脂濃度とした後、法面安定基材の有効成分
として、動力吹付機を用いて法面に吹き付けられ
る。
吹き付けられた後、土壌流失防止剤を構成する
合成樹脂エマルジヨンの凝集粒子は、法面表面に
止まり、一方、凝集剤を含まない合成樹脂エマル
ジヨンの大部分は、法面表層に浸透し、法面表面
及び法面表層が一体となつた土壌流失防止構造を
形成する。
次の表−１は、樹脂濃度1.6％を調整した本発
明において使用する土壌流失防止剤３／m2を、
0.5mm〜1.0mmの粒径に調整した砂の上に散布し、
硬化した砂の浸透深さと法面表層の硬度指数を測
定した実験結果を示すものである。比較のため、
土壌流失防止剤として浸透型エマルジヨン及び被
膜型エマルジヨンを用いた実験結果を、表−１に
併せて示した。
[Industrial Application Field] The present invention relates to a slope stabilization method.
More specifically, the present invention provides a method that maintains a stable effect of preventing soil movement and erosion on the slope surface and slope surface layer (hereinafter referred to as "soil erosion prevention effect") regardless of climatic conditions such as temperature. This paper relates to a slope stabilization method that can be obtained by The slope stabilization method according to the present invention is carried out to stabilize bare slopes formed by road construction and the like. [Conventional technology] Conventionally, this type of slope stabilization method consists of a synthetic resin emulsion such as polyvinyl acetate emulsion or polyacrylic acid ester emulsion, along with vegetation materials such as seeds, fertilizers, and soil conditioners, and water. A seed spraying method has been proposed and implemented in which a soil washout prevention agent is kneaded and the kneaded mixture is sprayed onto the slope using a power sprayer. In this conventional seed spraying method, as the water evaporates after spraying, the synthetic resin component of the synthetic resin emulsion becomes integrated with the fibrous material or the surface soil of the slope, and exhibits the effect of preventing soil erosion. Soil erosion preventive agents that exhibit such a soil erosion prevention effect can be roughly divided into two types based on function: film type and penetrating type (for example, the invention described in Japanese Patent Publication No. 47-47324). In addition, it is also possible to obtain a polyacetic acid emulsion by adding an electrolyte and/or a hydrophilic solvent to the extent that the emulsified state is broken to the extent that the emulsified particles separate and are easily dispersed by stirring even if they settle. There is an intermediate type (invention described in Japanese Patent Publication No. 47-39163) that uses a resin dispersion liquid. [Problems to be solved by the invention] In the film type, most of the synthetic resin components stay on the slope surface, so it is suitable for protecting the slope surface, but the synthetic resin component does not penetrate into the soil. , the soil washout prevention effect against erosion of the slope surface layer is low.
On the other hand, with the penetrating type, most of the synthetic resin components permeate to the slope surface layer, so it is suitable for protecting the slope surface layer, but since the synthetic resin component is difficult to remain on the slope surface, it is difficult to prevent erosion of the slope surface. The effect of preventing soil erosion is low. In this way, both the film type and the penetrating type have advantages and disadvantages. In order to compensate for the disadvantages of each, it is possible to increase the amount of synthetic resin components used, but simply increasing the amount of synthetic resin components will not work.
Another problem arises in that seed germination is impaired. Furthermore, the soil washout prevention agent according to the invention described in Japanese Patent Publication No. 47-39163 is chemically unstable;
Since it is affected by the environmental conditions at the spraying work site, it is not possible to obtain a stable soil washout prevention effect. [Means for Solving the Problems] As a result of various studies regarding the problems of the conventional seed spraying method described above, the present inventor has developed a soil washout prevention agent that has both film-type and penetrating properties. In other words, they have found that the above-mentioned problems can be solved, and based on this knowledge, they have completed the present invention. That is, in the slope stabilization method according to the present invention, a flocculant is added to a synthetic resin emulsion to flocculate the resin solid content, and then the supernatant liquid is removed to obtain flocculated particles of the synthetic resin emulsion. A soil washout prevention agent consisting of a kneaded product of a synthetic resin emulsion containing no flocculant and the flocculated particles is obtained by kneading the flocculant-free synthetic resin emulsion and the flocculated particles,
The method is characterized in that the soil flow control agent is sprayed onto the slope surface as an active ingredient of the slope stabilizer base material. [Example] and [Operation] The present invention will be explained along with the operation using Examples. In order to obtain aggregated particles of the synthetic resin emulsion used in the present invention, an emulsion of a polymer made of one or a combination of two or more monomers such as vinyl acetate, acrylic ester, methacrylic ester, unsaturated carboxylic acid, etc., acetic acid, etc. Synthetic resin emulsions with a solid content of approximately 50%, such as copolymer emulsions of vinyl and ethylene, SBR emulsions, and NBR emulsions, are combined with inorganic flocculants such as aluminum sulfate and polyaluminum chloride, or organic polymers such as polyacrylamide and polyethylene oxide. After adding a flocculant such as a molecular flocculant to flocculate the resin solid content in the synthetic resin emulsion, the supernatant liquid may be removed. The aggregated particles of the synthetic resin emulsion thus obtained are kneaded with a synthetic resin emulsion that does not contain a flocculant to produce a soil washout prevention agent that is a mixture of the aggregated particles and the synthetic resin emulsion that does not contain a flocculant. obtain. The synthetic resin emulsion containing no flocculant may be the synthetic resin emulsion used to obtain the aggregated particles of the synthetic resin emulsion, or may be another synthetic resin emulsion. The above-mentioned soil washout prevention agent can be diluted with water to a concentration of 1.0 to 15.0 at the spraying work site.
% resin concentration, it is sprayed onto the slope using a power sprayer as the active ingredient of the slope stabilizing base material. After being sprayed, the aggregated particles of the synthetic resin emulsion constituting the soil washout prevention agent stay on the slope surface, while most of the synthetic resin emulsion that does not contain a flocculant penetrates into the slope surface layer and spreads onto the slope surface. Forms a soil washout prevention structure in which the surface and slope surface layer are integrated. The following Table 1 shows the soil washout prevention agent 3/m 2 used in the present invention with an adjusted resin concentration of 1.6%.
Spread it on sand adjusted to a particle size of 0.5mm to 1.0mm,
This figure shows the experimental results of measuring the penetration depth of hardened sand and the hardness index of the slope surface layer. For comparison,
The results of experiments using penetrating emulsions and film emulsions as soil washout preventive agents are also shown in Table 1.
【表】
＊ 硬度指数は、山中式硬度計により求めた
値である。
表−１から、本発明において使用する土壌流失
防止剤は、浸透深さの点において、浸透型エマル
ジヨンと略同等の値を示す一方、硬度指数の点に
おいては、被膜型エマルジヨンの３倍以上、浸透
型エマルジヨンの約２倍の値を示している。
次に、他の実施例を示す。この実施例において
は、土壌流失防止剤に、ポリプロピレン、ビニロ
ン、木質フアイバー等の化学性或いは植物性の繊
維質材を加える。この繊維質材を加える態様とし
ては、次の２方法がある。先混練法−合成樹脂
エマルジヨンの凝集粒子を繊維質材に予め吸着さ
せ、これを凝集粒子を含まない合成樹脂エマルジ
ヨンとともに動力吹付機のタンク中に入れ、水に
希釈分散させる方法。後混練法−繊維質材を土
壌流失防止剤とともに動力吹付機のタンク中に入
れ、水に希釈分散させる方法。
この実施例のように、土壌流失防止剤と繊維質
材とを同時に法面に吹き付けると、繊維質材、合
成樹脂エマルジヨンの凝集粒子、凝集剤を含まな
い合成樹脂エマルジヨンが一体となつた網の目構
造の土壌流出防止構造を形成する。特に、前記先
混練法によるときには、合成樹脂エマルジヨンの
凝集粒子が繊維質材となり一体となつた強固な網
の目構造の土壌流失防止体を形成する。
次の表−２は、樹脂濃度1.6％に調整した土壌
流失防止剤に５mm長のビニロン繊維35ｇを混練し
た混練物３／m2を、45°に傾斜させた幅20cm、
長さ70cm、厚さ50cmにマサ土を敷きつめたエロー
ジヨン試験装置に散布し、自然乾燥させた後、
1.0ｍの高さから３／分の水を散水して土壌流
失量を調査した実験結果を示すものである。比較
のため、土壌流失防止剤として浸透型エマルジヨ
ン及び土壌流失防止剤を用いた実験結果を、表−
２に併せて示した。[Table] *Hardness index was determined using a Yamanaka hardness tester.
It is a value.
Table 1 shows that the soil washout prevention agent used in the present invention has approximately the same value as the permeation type emulsion in terms of penetration depth, while the hardness index is more than three times that of the film type emulsion. This value is about twice that of the penetrating emulsion. Next, another example will be shown. In this embodiment, a chemical or vegetable fibrous material such as polypropylene, vinylon, wood fiber, etc. is added to the soil erosion prevention agent. There are two ways to add this fibrous material: Pre-kneading method - A method in which aggregated particles of a synthetic resin emulsion are adsorbed onto a fibrous material in advance, and this is placed in a tank of a power spray machine together with a synthetic resin emulsion that does not contain aggregated particles, and then diluted and dispersed in water. Post-kneading method - A method in which the fibrous material is placed in the tank of a power sprayer together with a soil washout preventer and diluted and dispersed in water. As in this example, when the soil washout preventive agent and the fibrous material are sprayed on the slope at the same time, a net is created in which the fibrous material, the aggregated particles of the synthetic resin emulsion, and the synthetic resin emulsion that does not contain an aggregating agent are integrated. Forms a soil runoff prevention structure with a mesh structure. In particular, when the pre-kneading method is used, the aggregated particles of the synthetic resin emulsion become a fibrous material to form a soil washout prevention body having an integrated, strong network structure. The following Table 2 shows a kneaded material 3/m 2 made by kneading 35 g of vinylon fibers of 5 mm length into a soil washout prevention agent adjusted to a resin concentration of 1.6%, with a width of 20 cm at an angle of 45°.
After spraying on an erosion test device with masa soil spread to a length of 70 cm and a thickness of 50 cm, and letting it dry naturally,
This shows the results of an experiment in which the amount of soil washed away was investigated by sprinkling water at a rate of 3/min from a height of 1.0 m. For comparison, the results of experiments using a penetrating emulsion and a soil erosion prevention agent as soil erosion prevention agents are shown in Table-
It is also shown in 2.
【表】
表−２から、本発明において、土壌流失防止剤
を繊維質材と併用すれば、特に顕著な土壌流失防
止効果があることがわかる。
更に、他の実施例を示す。この実施例において
は、土壌流失防止剤に、種子、肥料、土壌改良剤
などの植生基材を加える。この実施例では、土壌
流失防止材が、法面表面及び法面表層の土壌流失
防止作用をするとともに、前記植生基材の流失や
移動を防止することもできるので、吹き付けた箇
所において、植生材料を確実に発芽育成させるこ
とができ、植生による法面保護が達成できる。
次の表−３は、各々の濃度に希釈した本発明で
使用する土壌流失防止剤にケンタツキー31フエス
クの種子を混練して得た混練物３／m2を、シヤ
ーレ内の少し締め固められたマサ土の上に散布
し、乾燥させ、次いで散水して25℃の定温器の中
で発芽させた実験結果を示すものである。比較の
ため、浸透エマルジヨンを用いた実験結果を、表
−３に併せて示した。[Table] From Table 2, it can be seen that in the present invention, when the soil erosion prevention agent is used in combination with the fibrous material, there is a particularly remarkable soil erosion prevention effect. Furthermore, other examples will be shown. In this example, the soil washout inhibitor is supplemented with vegetative substrates such as seeds, fertilizers, and soil conditioners. In this example, the soil washout prevention material acts to prevent soil washout on the slope surface and the slope surface layer, and can also prevent the vegetation base material from being washed away or moved. It is possible to ensure the germination and growth of vegetation, and it is possible to achieve slope protection with vegetation. The following Table 3 shows that 3/ m2 of a mixture obtained by kneading Kentucky 31 fescue seeds with the soil erosion preventive agent used in the present invention diluted to each concentration was slightly compacted in a shear. This shows the results of an experiment in which the seeds were spread on masa soil, dried, then watered, and germinated in an incubator at 25°C. For comparison, experimental results using permeation emulsion are also shown in Table 3.
本発明に係る法面安定工法は、以上の構成、作
用からなるので、次の効果が奏される。
即ち、本発明に係る法面安定工法は、土壌流失
防止剤として、合成樹脂エマルジヨンの凝集粒子
と凝集剤を含まない合成樹脂エマルジヨンとの混
練物を用いているから、法面表面と法面表層とが
一体構造となつた強固な土壌流失防止構造を形成
することができる。また、土壌流失防止剤が化学
的に安定しているから、吹き付け作業現場におけ
る気温等の環境条件に関係なく、法面表面及び法
面表層における土壌流失防止効果が常に発揮され
る。
さらに、本発明において、土壌流失防止剤と繊
維質材とを同時に法面に吹き付ければ、繊維質
材、合成樹脂エマルジヨンの凝集粒子及び凝集剤
を含まない合成樹脂エマルジヨンが一体となつた
土壌流失防止構造が形成されるので、土壌流失防
止効果がより一層発揮される。
その他、本発明は種子吹付工法にも応用でき、
これにより、法面表面及び法面表層の土壌流失防
止とともに、種子、肥料、土壌改良剤などの植生
材料の流失・移動を防止することができるから、
発芽率を低下させることなく、確実な植生基盤を
形成することが可能となり、植生による法面安定
化を実現することができる。
本発明は、以上のように、法面保護分野におい
て、従来から問題とされていた法面表面及び法面
表層における土壌流失防止を同時に実現した画期
的な法面安定工法の発明である。
Since the slope stabilization method according to the present invention has the above configuration and operation, the following effects are achieved. That is, the slope stabilization method according to the present invention uses a kneaded mixture of aggregated particles of synthetic resin emulsion and synthetic resin emulsion that does not contain a flocculant as a soil washout prevention agent, so that the slope surface and slope surface layer are It is possible to form a strong soil washout prevention structure with an integrated structure. In addition, since the soil erosion prevention agent is chemically stable, the soil erosion prevention effect on the slope surface and slope surface layer is always exhibited regardless of the environmental conditions such as temperature at the spraying work site. Furthermore, in the present invention, if the soil erosion preventive agent and the fibrous material are simultaneously sprayed onto the slope surface, the fibrous material, the aggregated particles of the synthetic resin emulsion, and the synthetic resin emulsion that does not contain an aggregating agent can be integrated into one and prevent soil erosion. Since a prevention structure is formed, the effect of preventing soil washing away is further exhibited. In addition, the present invention can also be applied to the seed spraying method,
This prevents the soil from being washed away on the slope surface and the slope surface layer, as well as preventing the washing away and movement of vegetation materials such as seeds, fertilizers, and soil conditioners.
It becomes possible to form a reliable vegetation base without reducing the germination rate, and it is possible to stabilize the slope surface with vegetation. As described above, the present invention is an innovative slope stabilization method that simultaneously realizes prevention of soil erosion on the slope surface and slope surface layer, which has been a problem in the field of slope protection.
Claims (1)
固形分を凝集させた後に上澄液を除去して合成樹
脂エマルジヨンの凝集粒子を得、次いで、凝集剤
を含まない合成樹脂エマルジヨンと前記凝集粒子
とを混練して凝集剤を含まない合成樹脂エマルジ
ヨンと前記凝集粒子との混練物からなる土壌流失
防止剤を得、該土壌流失防止剤を法面安定基材の
有効成分として法面に吹き付けることを特徴とす
る法面安定工法。 ２ 前記土壌流失防止剤と繊維質材とを同時に法
面に吹き付ける特許請求の範囲第１項に記載の法
面安定工法。 ３ 前記土壌流失防止剤と種子を含む植生基材と
を同時に法面に吹き付ける特許請求の範囲第１項
に記載の法面安定工法。[Claims] 1. After adding a flocculant to a synthetic resin emulsion to flocculate the resin solid content, the supernatant liquid is removed to obtain flocculated particles of a synthetic resin emulsion, and then a synthetic resin emulsion containing no flocculant is obtained. and the agglomerated particles are kneaded to obtain a soil washout preventive agent consisting of a kneaded product of a synthetic resin emulsion containing no coagulant and the agglomerated particles, and the soil washout preventive agent is used as an active ingredient of a slope stabilizing base material. A slope stabilization method characterized by spraying onto the surface. 2. The slope stabilization method according to claim 1, in which the soil washout prevention agent and the fibrous material are simultaneously sprayed onto the slope. 3. The slope stabilization method according to claim 1, wherein the soil washout prevention agent and the vegetation base material containing seeds are simultaneously sprayed onto the slope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6068387A JPS63226411A (en) | 1987-03-16 | 1987-03-16 | Slope stabilization work |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6068387A JPS63226411A (en) | 1987-03-16 | 1987-03-16 | Slope stabilization work |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63226411A JPS63226411A (en) | 1988-09-21 |
| JPH0453210B2 true JPH0453210B2 (en) | 1992-08-26 |
Family
ID=13149352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6068387A Granted JPS63226411A (en) | 1987-03-16 | 1987-03-16 | Slope stabilization work |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63226411A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005146262A (en) * | 2003-10-23 | 2005-06-09 | Konishi Co Ltd | Coating agent |
| JP2005146266A (en) * | 2003-10-23 | 2005-06-09 | Kuraray Co Ltd | Coating agent |
-
1987
- 1987-03-16 JP JP6068387A patent/JPS63226411A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63226411A (en) | 1988-09-21 |
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