JP3499488B2 - Slope protection method - Google Patents
Slope protection methodInfo
- Publication number
- JP3499488B2 JP3499488B2 JP2000041276A JP2000041276A JP3499488B2 JP 3499488 B2 JP3499488 B2 JP 3499488B2 JP 2000041276 A JP2000041276 A JP 2000041276A JP 2000041276 A JP2000041276 A JP 2000041276A JP 3499488 B2 JP3499488 B2 JP 3499488B2
- Authority
- JP
- Japan
- Prior art keywords
- slope
- members
- connecting member
- anchor
- protection method
- 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
Landscapes
- Piles And Underground Anchors (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Description
【0001】[0001]
【発明の属する技術分野】本発明は、法面の表層の土砂
の崩落と流出を防ぎ、植生を良好にする法面保護工法に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slope protection method for preventing collapse and outflow of sediment on the surface of a slope to improve vegetation.
【0002】[0002]
【従来の技術】従来法面の保護の為、法面にアンカーを
所定間隔で打設し、このアンカー引張部材の法面の突出
部分にコンクリート製の定着部材を緊締状態で固定する
方法が広く使用されている。この法面保護方法では法面
の地盤を強力に安定化させるが、法面表面の表層の崩
落、土砂の流出は防ぐことができない。そのため、この
ような場合、モルタルを法面に吹付けするか、別に法面
保護ネットを張り付けていた。この従来の法面保護方法
では、コンクリート製の重量のある定着部材の設置工事
が大規模で工事費を高め、工期も長くしていた。2. Description of the Related Art Conventionally, in order to protect a slope, anchors are placed on the slope at a predetermined interval, and a fixing member made of concrete is fixed to a protruding portion of the slope of the anchor tension member in a tightened state. It is used. Although this slope protection method strongly stabilizes the ground on the slope, it cannot prevent collapse of the surface layer on the slope surface and runoff of earth and sand. Therefore, in such a case, the mortar was sprayed on the slope or a slope protection net was separately attached. According to this conventional slope protection method, the installation work of the heavy fixing member made of concrete is large in scale, which increases the construction cost and lengthens the construction period.
【0003】[0003]
【発明が解決しようとする課題】本発明が解決しようと
する課題は、従来のこれらの問題点を解消し、安価で且
容易に施工でき、又工期短縮できる法面保護工法を提供
することにある。SUMMARY OF THE INVENTION The problem to be solved by the present invention is to provide a slope protection method which solves these problems of the prior art, can be constructed inexpensively and easily, and can shorten the construction period. is there.
【0004】[0004]
【課題を解決するための手段】かかる課題を解決した本
発明の構成は、
1) 法面地盤に地中アンカーを所定間隔で打設して法
面からアンカー引張部材を突出させ、法面表面に表土の
流出と保水性を与える植生シート及び植生シートの固定
と表土崩落を防ぐ保護ネットを被せ、アンカー引張部材
間を連結する長さの連接部材をアンカー引張部材間に縦
横に配置するとともに、連接部材をアンカー引張部材の
位置で互に重ねて又は連結した状態にしてアンカー引張
部材の締具で連接部材を止着し、しかもアンカー引張材
に連結する連接部材の端部はその高さが異なるように連
接部材の板厚みの整数倍の段差を設け、各連接部材が法
面に押し付けられるように各端部を重ね、アンカー引張
部材で連結止着した縦横の連接部材で保護ネット及び植
生シートを法面に固定し、安定した保護ネット及び植生
シートで植生させることを特徴とする法面保護工法
2) 連接部材の断面形状がT形又はL形である前記
1)記載の法面保護工法
3) 三方向の連接部材の端部を連接部材の本体より高
い位置になるように折曲してアンカー引張部材の位置で
四方の連接部材が重ねられるように形成し、連接部材の
端部間の連接部材本体が保護ネットと直接接触して保護
ネットを法面へ押圧させるようにした前記1)又は2)
記載の法面保護工法
4) 法面が曲面となっている場所において、連接部材
をアンカー引張部材間の長さより短かくし、隣り合う連
接部材の端を継手部材で連結させた前記1)〜3)何れ
か記載の法面保護工法
5) アンカー部材の締具にキャップを被せ、モルタル
でキャップ内を充填して止着した前記1)〜4)何れか
記載の法面保護工法にある。[Means for Solving the Problems] The constitution of the present invention which has solved the above problems is as follows: 1) Underground anchors are driven at predetermined intervals on the slope ground to project anchor anchor members from the slope surface, A vegetation sheet that gives water and water retention to the top soil and a protective net that fixes the vegetation sheet and prevents the topsoil from collapsing, and arranges a connecting member of a length that connects the anchor tension members vertically and horizontally between the anchor tension members, a connecting member in the state of being mutually superimposed in or connected with the position of the anchor tension member to fasten the connecting member in fasteners anchor tension member, moreover anchor tension member
The ends of the connecting members that are connected to the
A step is provided that is an integral multiple of the plate thickness of the connecting member, and each connecting member is
It is characterized by stacking each end so that it can be pressed against the surface, fixing the protective net and vegetation sheet to the slope with vertical and horizontal connecting members that are connected and fixed by anchor tension members, and vegetate with a stable protective net and vegetation sheet. Slope protection method 2) The slope protection method described in the above 1) in which the cross-sectional shape of the connecting member is T-shaped or L-shaped. 3) The ends of the connecting members in three directions are positioned higher than the main body of the connecting member. Bending so that the connecting members on the four sides are stacked at the position of the anchor tension member, and the connecting member body between the ends of the connecting member directly contacts the protective net to press the protective net to the slope. The above 1) or 2)
4) The slope protection method described in 4) In the place where the slope is a curved surface, the connecting member is made shorter than the length between the anchor tension members, and the ends of the adjacent connecting members are connected by the joint member. 5) Any of the slope protection methods 5) The slope protection method according to any one of 1) to 4) above, wherein the fastener of the anchor member is covered with a cap, and the inside of the cap is filled with mortar and fixed.
【0005】[0005]
【発明の実施の形態】本発明の連接部材の長さは、基本
的にはアンカー部材間の長さに重ね合せの長さを加えた
ものであり、断面T形状、L形状で素材を耐錆処理され
た鋼製を一般的とし、重さは10kg程度とする。法面
のカーブ部分は連接部材を短かくして継手部材で連結す
るようにして、カーブに対応させるようにするのがよ
い。本発明の格子の一辺を形成する連接部材のアンカー
引張部材での位置では折曲して三辺又は四辺の連接部材
が重ねてアンカー引張部材の上端部分を貫通して締具で
止着する形態がよい。本発明の保護ネットとしては、金
網,網状金属ネット,プラスチックネット又は大きな開
口のある金属板があり、又植生シートとしては植生布、
又は自然の植生材又は芝等の植生マット,種子入りマッ
トがある。BEST MODE FOR CARRYING OUT THE INVENTION The length of the connecting member of the present invention is basically the length between the anchor members plus the overlapping length. Rust-treated steel is generally used, and the weight is about 10 kg. It is preferable that the curved portion of the slope be made to correspond to the curve by making the connecting member short and connecting it by the joint member. A mode in which the connecting member forming one side of the lattice of the present invention is bent at the position of the anchor tension member, and the connecting members of three sides or four sides are overlapped and penetrate the upper end portion of the anchor tension member and are fastened with fasteners. Is good. The protective net of the present invention includes a wire net, a net-like metal net, a plastic net or a metal plate having a large opening, and a vegetation sheet is a vegetation cloth,
Or, there are vegetation mats such as natural vegetation materials or grass, and mats with seeds.
【0006】[0006]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。図1は、実施例で施工された法面の正面図であ
る。図2は、実施例で施工された法面の断面図である。
図3は、実施例の連接部材の中間での断面図である。図
4は、実施例に使用した一つの連接部材を示す平面図で
ある。図5は、実施例の施工工程を示す説明図である。
図6は、実施例に使用した連接部材の端部形状を示す説
明図である。図7は、実施例のアンカー引張部材による
連接部材の固定状態を示す平面図である。図8は、実施
例の法面のカーブにおける連接部材の連結を示す説明図
である。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of the slope constructed in the example. FIG. 2 is a sectional view of a slope constructed in the example.
FIG. 3 is a sectional view in the middle of the connecting member of the embodiment. FIG. 4 is a plan view showing one connecting member used in the example. FIG. 5: is explanatory drawing which shows the construction process of an Example.
FIG. 6 is an explanatory view showing the end shape of the connecting member used in the examples. FIG. 7 is a plan view showing a fixed state of the connecting member by the anchor tension member of the embodiment. FIG. 8: is explanatory drawing which shows the connection of the connection member in the curve of the slope of an Example.
【0007】図中、1は法面に1.2m間隔に5m程深
さに法面地中に打設されたアンカー、1aは鉄筋状の鋼
製アンカー引張部材であって削孔との空間にモルタル注
入して地中に固定されたものであり、1bはアンカー引
張部材1aの法面からの突出部分を連接部材2に固定す
る締具、1b1は同締具のナット、1b2は同ナットの
外周に被せる円筒キャップ、1b3は同円筒キャップ内
に充填するモルタル、2は断面L形状の亜鉛メッキの耐
錆処理された鋼製の1.3m程の連接部材、2aは同連
接部材の垂直のリブ、2b1,2b2,2b3,2b4
は連接部材2のリブなしの端部、2cはアンカー引張部
材1aの貫通孔、3は10cm正方形の網目の亜鉛メッ
キの金網製保護ネット、4は同保護ネットの下に敷いた
不織布の植生シート、5は短尺の法面カーブ面の連接部
材、6は同連結部材の端部同士の継手部材である。Nは
法面、Hはアンカー1の打設する前の法面地盤の削孔で
ある。In the figure, 1 is an anchor placed in the ground at a depth of about 5 m at intervals of 1.2 m on the slope, and 1a is a reinforcing bar-shaped steel anchor tension member, which is a space for drilling. 1b is a fastener for fixing the protruding portion of the anchor tension member 1a from the slope to the connecting member 2, 1b1 is a nut for the fastener, and 1b2 is a nut for the fastener. 1b3 is a mortar filled in the same cylindrical cap, 2 is a connecting member made of rust-proof galvanized steel having a L-shaped cross section and having a length of 1.3 m, and 2a is a vertical portion of the connecting member. Ribs 2b1, 2b2, 2b3, 2b4
Is a rib-free end of the connecting member 2, 2c is a through hole of the anchor tension member 1a, 3 is a protective net made of zinc-plated wire mesh of 10 cm square mesh, and 4 is a non-woven vegetation sheet laid under the protective net. Reference numeral 5 is a connecting member having a short sloped curved surface, and 6 is a joint member between end portions of the connecting member. N is a slope, and H is a hole in the slope ground before the anchor 1 is placed.
【0008】この実施例では、法面Nに1.2m間隔に
縦横に削孔機を使用して5m程の削孔Hを穿孔する(図
4(a)参照)。穿孔後圧縮空気を送って削孔H内を清
掃する。次に同削孔にモルタルを注入し、その硬化前に
鉄筋であるアンカー引張部材1aを削孔毎に挿入する。
アンカー引張部材1aの上端は法面Nの表面から地上に
突出させる。(図5(b)参照)。次に不織布の植生シ
ート4を法面N表面に敷きしめ、その上から10cm正
方の網目の金網の保護ネット3を被せる。保護ネット3
を被せた後に1.3m程の縦及び横の連接部材2をアン
カー引張材1a上にその端部2b1,2b2,2b3,
2b4がくるように配置する。連接部材2の端部2b2
〜2b4はその高さが異なるように連接部材2の板厚み
の整数倍の段差を設けていて、四辺の各連接部材2の端
部2b1〜2b4が重ねられるようになっている。(図
5(c)参照)。各連接部材2の端部2b1〜2b4の
貫通孔2cにアンカー引張部材1aの地上突出部分を挿
入し、貫通した地上突出部分にナット1b1を取付け、
ナット1b1で締めつけるようにして連接部材2を法面
Nに押付けるように固定する。次に円筒キャップ1b2
を外側に被せ、円筒キャップ1b2内面とナット1b1
・アンカー引張部材1aの間をモルタルで充填する(図
5(c)参照)。これによって、アンカー引張部材の上
端の耐錆と固定を良好にする。このようにして、アンカ
ー1によって縦横の連接部材2を互に連結するとともに
法面Nに対し押し付けるようにする。連接部材2が法面
Nに押し付けることで保護ネット3及び植生シート4を
法面N表面に密着される。必要に応じて保護ネット3と
連接部材2とは金具・線材で連結する。このように保護
ネットと植生シート4が法面Nに押し付けられるように
被せられることによって、法面表土の雨水による流出・
崩落を防ぎ、又保水性を保つことで植生を良好にする。
(図5(d),図1参照)
本発明の連接部材は1.3m程で重量も10kg前後で
あるので、一人の作業者が手で持って法面に運び、設置
調整できるので作業性がよい。法面がカーブする場所で
は連接部材として一短寸の連接部材5を曲面に沿って配
置し、それらの間を短かい継手部材6で連結することで
曲面に沿って連接部材を配置できる。In this embodiment, a hole drilling machine of about 5 m is drilled vertically and horizontally on the slope N at intervals of 1.2 m (see FIG. 4 (a)). After drilling, compressed air is sent to clean the inside of the drilled hole H. Next, mortar is injected into the drilled holes, and the anchor tension member 1a, which is a reinforcing bar, is inserted into each drilled hole before hardening.
The upper end of the anchor tension member 1a is projected from the surface of the slope N to the ground. (See FIG. 5 (b)). Next, a non-woven vegetation sheet 4 is laid on the surface of the slope N, and a protective net 3 of a wire mesh 10 cm square from the top is covered. Protection net 3
Then, the longitudinal and horizontal connecting members 2 of about 1.3 m are placed on the anchor tension member 1a at their end portions 2b1, 2b2, 2b3.
Arrange so that 2b4 comes. The end 2b2 of the connecting member 2
2b4 are provided with steps having an integral multiple of the plate thickness of the connecting member 2 so that the heights thereof are different, and the end portions 2b1 to 2b4 of the connecting members 2 on the four sides are overlapped. (See FIG. 5 (c)). Insert the ground projecting portion of the anchor tension member 1a into the through holes 2c of the end portions 2b1 to 2b4 of each connecting member 2, and attach the nut 1b1 to the penetrating ground projecting portion,
The connecting member 2 is fixed so as to be pressed against the slope N by tightening with the nut 1b1. Next, the cylindrical cap 1b2
The outer surface of the cylindrical cap 1b2 and the nut 1b1.
-Fill between the anchor tension members 1a with mortar (see Fig. 5 (c)). This improves rust resistance and fixation of the upper end of the anchor tension member. In this way, the vertical and horizontal connecting members 2 are connected to each other by the anchor 1 and pressed against the slope N. By pressing the connecting member 2 against the slope N, the protective net 3 and the vegetation sheet 4 are brought into close contact with the surface of the slope N. If necessary, the protective net 3 and the connecting member 2 are connected by metal fittings / wires. In this way, the protective net and the vegetation sheet 4 are covered so as to be pressed against the slope N, so that the runoff of the slope surface soil due to rainwater
Prevents collapse and keeps water retention to improve vegetation.
(See FIG. 5 (d) and FIG. 1) Since the connecting member of the present invention has a length of about 1.3 m and a weight of about 10 kg, one worker can carry it by hand to the slope and adjust the installation, so that workability is improved. Is good. At a place where the slope is curved, a short connecting member 5 is arranged as a connecting member along the curved surface, and a short joint member 6 is connected between them to arrange the connecting member along the curved surface.
【0009】[0009]
【発明の効果】以上の様に、本発明によれば、連接部材
は比較的に短かく、重くならないので一人で法面上を運
んで設置・取付け調整することができ、作業性に優れて
いる。又、連接部材の断面がL又はT形状になっている
のでこの垂直部分が足場となって作業し易く、又土砂の
崩落を効果的に防止できる。又植生シート・保護ネット
で表土の崩落・流出を防止し、密着する事で植生を良好
にする。又簡単な部材であるので安価で且つ工期を短か
く施工できる。As described above, according to the present invention, since the connecting member is relatively short and does not become heavy, one person can carry it on the slope and install and adjust it, which is excellent in workability. There is. Further, since the connecting member has an L- or T-shaped cross section, this vertical portion serves as a scaffold for easy work, and the collapse of earth and sand can be effectively prevented. In addition, vegetation sheets and protective nets prevent the topsoil from collapsing and flowing out, and improve the vegetation by making close contact. Further, since it is a simple member, it can be constructed at a low cost and with a short construction period.
【図1】実施例で施工された法面の正面図である。FIG. 1 is a front view of a slope constructed in an example.
【図2】実施例で施工された法面の断面図である。FIG. 2 is a cross-sectional view of a slope constructed in the example.
【図3】実施例の連接部材の中間での断面図である。FIG. 3 is a sectional view in the middle of the connecting member of the embodiment.
【図4】実施例に使用した一つの連接部材を示す平面図
である。FIG. 4 is a plan view showing one connecting member used in Examples.
【図5】実施例の施工工程を示す説明図である。FIG. 5 is an explanatory view showing a construction process of the example.
【図6】実施例に使用した連接部材の端部形状を示す説
明図である。FIG. 6 is an explanatory view showing an end shape of the connecting member used in the examples.
【図7】実施例のアンカー引張部材による連接部材の固
定状態を示す平面図である。FIG. 7 is a plan view showing a fixed state of the connecting member by the anchor tension member of the embodiment.
【図8】実施例の法面のカーブにおける連接部材の連結
を示す説明図である。FIG. 8 is an explanatory diagram showing the connection of the connecting members on the curve of the slope of the embodiment.
1 アンカー 1a アンカー引張部材 1b 締具 1b1 ナット 1b2 円筒キャップ 1b3 モルタル 2 連接部材 2a リブ 2b1〜2b4 端部 2c 貫通孔 3 保護ネット 4 植生シート 5 連接部材 6 継手部材 N 法面 H 削孔 1 anchor 1a anchor tension member 1b Fastener 1b1 nut 1b2 Cylindrical cap 1b3 mortar 2 connecting members 2a rib 2b1-2b4 end 2c through hole 3 protection net 4 vegetation sheet 5 connecting members 6 Joint members N slope H drilling
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平11−152752(JP,A) 特開 平5−272141(JP,A) 特開 昭49−57613(JP,A) 実開 平3−99040(JP,U) (58)調査した分野(Int.Cl.7,DB名) E02D 17/20 103 E02D 5/80 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-11-152752 (JP, A) JP-A-5-272141 (JP, A) JP-A-49-57613 (JP, A) Actual flat 3- 99040 (JP, U) (58) Fields surveyed (Int.Cl. 7 , DB name) E02D 17/20 103 E02D 5/80
Claims (5)
設して法面からアンカー引張部材を突出させ、法面表面
に表土の流出と保水性を与える植生シート及び植生シー
トの固定と表土崩落を防ぐ保護ネットを被せ、アンカー
引張部材間を連結する長さの連接部材をアンカー引張部
材間に縦横に配置するとともに、連接部材をアンカー引
張部材の位置で互に重ねて又は連結した状態にしてアン
カー引張部材の締具で連接部材を止着し、しかもアンカ
ー引張材に連結する連接部材の端部はその高さが異なる
ように連接部材の板厚みの整数倍の段差を設け、各連接
部材が法面に押し付けられるように各端部を重ね、アン
カー引張部材で連結止着した縦横の連接部材で保護ネッ
ト及び植生シートを法面に固定し、安定した保護ネット
及び植生シートで植生させることを特徴とする法面保護
工法。1. Fixing of a vegetation sheet and a vegetation sheet that give underground soil anchors at predetermined intervals to the slope ground to project anchor anchor members from the slope to give outflow of soil and water retention to the slope surface. A state in which a protective net that prevents collapse of the topsoil is covered, connecting members having a length for connecting the anchor tension members are arranged vertically and horizontally between the anchor tension members, and the connection members are stacked or connected to each other at the position of the anchor tension members. Then secure the connecting member with the fastener of the anchor tension member, and
-The ends of the connecting members that connect to the tensile members have different heights
As shown in the figure, each step is made by providing a step that is an integral multiple of the plate thickness of the connecting member.
Each end is overlapped so that the member is pressed against the slope, and the vertical and horizontal connecting members that are connected and fixed by anchor tension members fix the protective net and vegetation sheet to the slope, and vegetate with a stable protective net and vegetation sheet. A slope protection method characterized by that.
る請求項1記載の法面保護工法。2. The slope protection method according to claim 1, wherein the cross-section of the connecting member is T-shaped or L-shaped.
体より高い位置になるように折曲してアンカー引張部材
の位置で四方の連接部材が重ねられるように形成し、連
接部材の端部間の連接部材本体が保護ネットと直接接触
して保護ネットを法面へ押圧させるようにした請求項1
又は2記載の法面保護工法。3. An end portion of the connecting member in three directions is bent to a position higher than the main body of the connecting member, and four connecting members are formed so as to overlap at the position of the anchor tension member. The main body of the connecting member between the end portions is in direct contact with the protective net to press the protective net against the slope.
Or the slope protection method described in 2.
連接部材をアンカー引張部材間の長さより短かくし、隣
り合う連接部材の端を継手部材で連結させた請求項1〜
3何れか記載の法面保護工法。4. In a place where the slope is a curved surface,
The connecting member is made shorter than the length between the anchor tension members, and the ends of the adjacent connecting members are connected by a joint member.
3. The slope protection method described in any one of 3.
モルタルでキャップ内を充填して止着した請求項1〜4
何れか記載の法面保護工法。5. The cap of the fastener of the anchor member is covered,
5. The inside of the cap is filled with mortar and fixed.
The slope protection method described in any one.
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JP2000041276A JP3499488B2 (en) | 2000-02-18 | 2000-02-18 | Slope protection method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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JP2000041276A JP3499488B2 (en) | 2000-02-18 | 2000-02-18 | Slope protection method |
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JP2001226973A JP2001226973A (en) | 2001-08-24 |
JP3499488B2 true JP3499488B2 (en) | 2004-02-23 |
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Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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KR100905930B1 (en) | 2009-04-21 | 2009-07-02 | 주식회사 지에이엔지니어링건축사사무소 | Concrete facilities for road slope protective |
KR101010660B1 (en) * | 2010-04-26 | 2011-01-24 | 주식회사 보강기술공사 | A groundcutted area reinforcement method for stability procure |
JP6220509B2 (en) * | 2012-10-11 | 2017-10-25 | 株式会社テザック | Rock fall prevention and erosion prevention structure and construction method |
CN113668574B (en) * | 2021-08-31 | 2022-05-17 | 安徽农业大学 | Slope supporting device and slope supporting method |
CN114809021B (en) * | 2022-06-02 | 2023-04-21 | 华南农业大学 | A foundation ditch bank protection strengthening equipment for civil engineering |
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