JP2005350894A - Slope protecting method - Google Patents

Slope protecting method Download PDF

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JP2005350894A
JP2005350894A JP2004170356A JP2004170356A JP2005350894A JP 2005350894 A JP2005350894 A JP 2005350894A JP 2004170356 A JP2004170356 A JP 2004170356A JP 2004170356 A JP2004170356 A JP 2004170356A JP 2005350894 A JP2005350894 A JP 2005350894A
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bearing plate
mesh body
net body
ground
net
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JP4514523B2 (en
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Shinkichi Ooka
伸吉 大岡
Mitsuyoshi Cho
満良 張
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Yoshika KK
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Yoshika KK
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a slope protecting method wherein a net body is installed in a spread manner on a slope to be protected, wherein bearing plates are arranged from a top surface of the net body in a dotted state, wherein the bearing plate on the net body is pushed down toward natural ground surface by using an anchor preinstalled on natural ground in such a manner as to correspond to a bearing plate arrangement place, and anchored onto the natural ground so that the net body can be fixed to the natural ground, and wherein the net body is put into the state of being effectively tensioned on the ground surface when fixed. <P>SOLUTION: An uneven section is provided on the ground surface M so that a bearing plate anchoring surface M<SB>B</SB>can be in a low position with respect to a net body spreading and installing surface M<SB>A</SB>on the periphery of it. In a push-down step for anchoring the bearing plate 3, a net body part under the bearing plate is pushed down toward the anchoring surface M<SB>B</SB>, so that the net body part on the periphery of the bearing plate can be planarly expanded and tensioned, and so that a required tensile force can be applied to the net body 1 on the completion of the anchoring of the bearing plate. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、地山の斜面や法面などの保護方法、特に地山表層の滑り、崩壊を防止するための方法に関する。   The present invention relates to a method for protecting natural slopes and slopes, and more particularly to a method for preventing slippage and collapse of natural ground surfaces.

従来、地山表層の滑り、崩壊などを防止し、地山の安定化を図るための様々な方法が提案されており、その中で、比較的浅い、例えば１〜３ｍの深さの表層が剥離して滑り落ちる虞があるような斜面の安定化法として、保護すべき斜面に網体を展延設置し、この網体の上面から支圧板を所定間隔置きに点在状態に配置し、前記支圧板配置箇所に相当して予め地山に設置されているアンカーを用いて網体上の支圧板を地山面に向けて押し下げ、最終的に支圧板を地山に定着して網体を地山に固定する斜面保護方法が提案されている（例えば、特許文献１参照）。   Conventionally, various methods have been proposed to prevent slippage, collapse, etc. of the natural ground and to stabilize the natural ground. Among them, a relatively shallow surface, for example, a depth of 1 to 3 m, has been proposed. As a method of stabilizing the slope, which may peel off and slide down, a mesh body is extended and installed on the slope to be protected, and the support plates are arranged at predetermined intervals from the upper surface of the mesh body, Using the anchors installed in the ground in advance corresponding to the location of the bearing plate, push the bearing plate on the mesh body toward the ground surface, and finally fix the bearing plate to the ground and fix the mesh body. A slope protection method for fixing to a natural ground has been proposed (see, for example, Patent Document 1).

特開２００１−１１８６３号公報JP 2001-11863 A

上記従来方法において、地山面に展延設置され、支圧板によって押圧固定された網体は、その固定時点で地山面との関係で緊張状態になっている必要がある。即ち、固定された網体の略全体が地山表層を遊びなく押圧している状態になっていることが必要である。網体と地山との間に遊びがある場合、網体は有効に機能しているとは云えず、網体本来の受圧作用が表層滑り発生後に発揮されることになる。たとえ僅かな滑りであったとしても、その発生は避けなければならない。即ち、地山面との関係で網体に遊び或いは緩みが生じていないようにしておかなければならない。   In the above-described conventional method, the net body that is spread and installed on the ground surface and is pressed and fixed by the bearing plate needs to be in a tensioned state in relation to the ground surface at the time of fixing. In other words, it is necessary that almost the entire fixed net body is in a state of pressing the ground surface layer without play. When there is play between the net body and the ground, the net body is not functioning effectively, and the original pressure receiving action of the net body is exhibited after the occurrence of surface slip. Even if it is a slight slip, it must be avoided. That is, it must be ensured that there is no play or slack in the net body in relation to the ground surface.

そこで、本発明の目的は、固定時に網体を地山面に対して有効な緊張状態に至らしめる効果的で簡単な方法を提供することである。   SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an effective and simple method for bringing a net body into an effective tension state with respect to a natural ground surface when fixed.

上記目的は、請求項１に記載の発明によれば、高強度で耐食性のあるワイヤーで製作した網体を、保護すべき斜面に展延設置し、この網体の上面から支圧板を所定間隔置きに点在状態に配置し、前記支圧板配置箇所に相当して予め地山に設置されているアンカーを用いて網体上の支圧板を地山面に向けて押し下げ、最終的に支圧板を地山に定着して網体を地山に固定する斜面保護方法において、前記地山の支圧板定着面をその周辺の網体展延設置面よりも低い位置に設け、前記網体展延設置工程において、網体を前記網体展延設置面上に略平坦な状態に設置し、支圧板定着のための前記支圧板押下工程において、支圧板下の網体部分を前記網体展延設置面への網体設置時の高さ位置からその下方の支圧板定着面へ向けて押し下げ、この押し下げの際の前記網体展延設置面上の網体部分の随伴降下を前記網体展延設置面によって妨げることによって、支圧板周囲の網体部分を面的に伸長させ且つ緊張させ、前記支圧板の定着完了時に網体に所要の緊張力をもたらすことを特徴とする斜面保護方法によって達成される。   According to the first aspect of the present invention, the mesh body made of high-strength and corrosion-resistant wire is installed on the slope to be protected, and the support plate is spaced from the upper surface of the mesh body at a predetermined interval. The support plate on the mesh body is pushed down toward the natural ground surface by using anchors previously installed in the natural ground corresponding to the support plate placement locations, and finally the support plate In the slope protection method of fixing the net body to the natural ground and fixing the net body to the natural ground, the support plate fixing surface of the natural ground is provided at a position lower than the surrounding net body extending installation surface, and the net body extending In the installation step, the net body is installed in a substantially flat state on the net body extension installation surface, and in the step of pressing the support plate for fixing the support plate, the net body portion under the support plate is expanded. Push down from the height position when installing the mesh body on the installation surface toward the fixing plate under the support plate. In this case, the accompanying descending of the mesh body portion on the mesh body extending installation surface is hindered by the mesh body extending installation surface, so that the mesh body portion around the bearing plate is stretched and tensioned, and the support is supported. This is achieved by a slope protecting method characterized by bringing a required tension to the net body when fixing of the pressure plate is completed.

上記の「位置」なる表現は、地山面を水平面と見立てた場合の高低方向の位置を意味している。   The expression “position” means the position in the elevation direction when the natural ground surface is regarded as a horizontal plane.

本発明は、比較的浅い地山表層の剥離崩落は、安定的な地山深層に結合されたアンカーと、このアンカーに取り付けられた支圧板とによって、地山に対して緊張をもって固定された高強度の網体によって防止できるとの認識の下になされたものである。   According to the present invention, the peeling of the surface layer of a relatively shallow ground is caused by a high tension fixed to the ground by an anchor coupled to a stable ground depth and a bearing plate attached to the anchor. It was made with the recognition that it can be prevented by a strong mesh.

請求項１に記載の発明によれば、支圧板の押し下げ作業の進行に従って当該支圧板周囲の網体に緊張力が生じると共にこの緊張力が増大し、支圧板全部の定着完了時には網体全体が地山面に対して緊張状態におかれ、従って網体全体が地山表層を遊びなく押えている状態になる。換言すれば、地山表層は滑りや崩壊が発生し得ないよう、アンカーと支圧板とによって固定された網体によってしっかりと押えられる。明らかなように、本発明によれば、網体緊張力の発生及び増大は、支圧板定着作業を行なうことによってもたらされ、緊張力をもたらすための別途の特別な作業を必要としない。   According to the first aspect of the invention, as the pressure plate is pushed down, tension is generated in the mesh body around the pressure plate and the tension force is increased. It is in a state of tension with respect to the natural ground surface, so that the entire net body is pressing the natural ground surface without play. In other words, the natural ground surface layer is firmly pressed by the mesh body fixed by the anchor and the bearing plate so that slipping and collapse cannot occur. As is apparent, according to the present invention, the generation and increase of the net tension force is brought about by performing the bearing plate fixing work, and does not require a separate special work for bringing the tension force.

請求項２に記載の発明は、請求項１に記載の発明において、前記支圧板定着面が、前記支圧板が進入可能であるように地山面に設けられた凹所によって形成され、前記網体展延設置面が前記凹所以外の地山面によって形成されていることを特徴とする。このような凹所を設けることによって、支圧板の押し下げが進行するにつれて、支圧板下及び支圧板近辺の網体部分が凹所内へ引き込まれ、その結果網体が面的に引き伸ばされる状態になり、網体には緊張力が生じ且つ徐々に増大し、支圧板の定着時には所望の緊張力がもたらされる。   According to a second aspect of the present invention, in the first aspect of the present invention, the support plate fixing surface is formed by a recess provided in a ground surface so that the support plate can enter, and the mesh The body extension installation surface is formed by a natural mountain surface other than the recess. By providing such a recess, as the pressure plate is pushed down, the portion of the mesh body under and near the pressure plate is drawn into the recess, and as a result, the mesh body is stretched in a plane. The tension force is generated in the mesh body and gradually increases, and a desired tension force is obtained when the bearing plate is fixed.

請求項３に記載の発明は、請求項１に記載の発明において、前記網体展延設置面が、前記網体の展延設置に先立って、アンカー間領域に前記支圧板定着面よりも上方へ突出するように１つ又は複数の土嚢を配置することによって形成されていることを特徴とする。土嚢は必要な高さのなだらかな盛り上がりになるよう配置され或いは堆積されることが好ましい。   According to a third aspect of the present invention, in the first aspect of the present invention, the network body extending installation surface is located above the support plate fixing surface in the region between anchors prior to the installation of the network body. It is formed by arrange | positioning one or several sandbags so that it may protrude to. The sandbag is preferably arranged or deposited so as to have a gentle rise to the required height.

請求項３に記載の発明によれば、アンカー間領域に配置された土嚢により形成された前記網体展延設置面が、支圧板押し下げ時に前記領域における網体の面的な伸長をもたらし、従って網体に緊張をもたらし、支圧板の押し下げが進行するに従って網体の緊張を増大させる。最終的に、支圧板全部の定着完了時には網体全体が地山に対して緊張した状態におかれる。   According to the invention of claim 3, the mesh body extending installation surface formed by the sandbag arranged in the inter-anchor region brings about the surface elongation of the mesh body in the region when the bearing plate is pressed down. Tension is applied to the net body, and the tension of the net body is increased as the pressure plate is pushed down. Finally, when the fixing of all the bearing plates is completed, the entire net is placed in tension with the ground.

請求項４に記載の発明は、前記土嚢が、複数の支圧板で包囲される斜面範囲の中央部に配置されることを特徴としている。   The invention according to claim 4 is characterized in that the sandbag is arranged at a central portion of a slope range surrounded by a plurality of bearing plates.

請求項４に記載の発明によれば、網体に生じる緊張力を、当該土嚢周辺のアンカーに均等に分散させて受け持たせることができる。即ち、一部のアンカーに偏重した力が及ぼされることがない。   According to invention of Claim 4, the tension force which arises in a net | network body can be disperse | distributed equally to the anchor around the said sandbag, and can be received. In other words, a biased force is not exerted on some anchors.

請求項５に記載の発明は、前記網体を構成するワイヤーを硬鋼線で製造することを特徴とするものであり、前記硬鋼線は好ましくは引張強度が１７７０Ｎ／ｍｍ２以上の高強度硬鋼線であって、このような高強度の網体は、滑りによる崩落が生じないよう地山を確実に押える十分な強度を有し、更に、網体に課されるべき作用を数十年単位の長期間に亘って保ち続けることを可能にする。 The invention according to claim 5 is characterized in that the wire constituting the mesh body is manufactured with a hard steel wire, and the hard steel wire preferably has a high strength with a tensile strength of 1770 N / mm 2 or more. It is a hard steel wire, and such a high-strength mesh body has sufficient strength to reliably hold the ground in order to prevent collapse due to slipping, and it has several tens of actions to be imposed on the mesh body. It is possible to keep it for a long period of year.

本発明によれば、網体の緊張力を発生させ増大させるための支圧板定着位置及び網体展延設置面は比較的簡単な作業によって地山面にもたらすことができ、そのような凹凸を設けた後、支圧板を定着する作業を行なうだけで網体全体に緊張力がもたらされるものであり、従って比較的簡単な作業によって斜面安定化が効率よく達成されるという効果が得られる。   According to the present invention, the support plate fixing position and the mesh body extending installation surface for generating and increasing the tension of the mesh body can be brought to the natural ground surface by a relatively simple work, and such unevenness is provided. After the installation, the tension force is brought to the entire net body only by performing the operation of fixing the bearing plate. Therefore, the effect of stabilizing the slope efficiently by a relatively simple operation can be obtained.

［第１の実施の形態］
図１は、本発明によって地山斜面に敷設された際の網体１と、この網体を斜面に固定しておくための多数のアンカー又はアンカーロッド（以下アンカーと呼称する）２、及びこのアンカーによって定着される支圧板３との相互関係を模式的に示すものである。アンカー２及び支圧板３の配列は、図示のように縦横に整列したものでもよいし、縦横の列毎に位置をずらせて千鳥状に配列したものであってもよいし、場合によってはランダムな配置であってもよい。縦横に隣接するアンカー間の距離は様々に選択可能であるが、好ましくは略１〜２ｍの間で選択される。 [First Embodiment]
FIG. 1 shows a net body 1 when laid on a natural slope according to the present invention, a number of anchors or anchor rods (hereinafter referred to as anchors) 2 for fixing the net body to the slope, and this The mutual relationship with the bearing plate 3 fixed by the anchor is schematically shown. The arrangement of the anchor 2 and the bearing plate 3 may be arranged vertically and horizontally as shown in the figure, or may be arranged in a staggered manner with the positions shifted vertically and horizontally. It may be an arrangement. The distance between anchors adjacent to each other in the vertical and horizontal directions can be selected variously, but is preferably selected between about 1 to 2 m.

アンカー２の設置は、従来実施されているものと同様に、また図７、図１４等において概略的に示すように、岩盤などの地山深層（不動層）Ｇ１まで削孔して形成したアンカー孔にアンカー２を挿入し、このアンカーの基部２Ｂを、アンカー孔に注入したセメントミルクなど固定材Ｃの硬化により地山深層Ｇ１に固定することによって行われる。アンカー２の頭部２Ａは地表に露出せしめられ、後述のように支圧板３を地山に固定的に定着するために使用される。   The anchor 2 is installed in the same manner as in the prior art, and as shown schematically in FIGS. 7 and 14 and the like, the anchor is formed by drilling up to a deep ground layer (immobile layer) G1 such as a rock mass. The anchor 2 is inserted into the hole, and the base 2B of the anchor is fixed to the deep ground layer G1 by hardening of the fixing material C such as cement milk injected into the anchor hole. The head 2A of the anchor 2 is exposed to the ground surface, and is used for fixing the bearing plate 3 to the ground as described later.

図２は上記網体１の好適な態様を示すものであって、この網体は下記のようにジグザグ状に折り曲げられたワイヤー１１を連結することによって構成されている。ワイヤーの折曲は、図２及び図３に示すように、平面的に見てジグザグ状に（図２Ａ）、伸長方向に向かって螺旋状に（図３）、正面から見ると長円形状に（図２Ｂ）行なわれている。即ち、図３に示すように、ワイヤー１１は、略直線状の上辺直線部１１ａ及び下辺直線部１１ｂが、それらの間の屈曲部１１ｃによって結合された状態で折曲されており、その場合図２Ａに示すように、上辺直線部１１ａと下辺直線部１１ｂとが成す角度Ｒは、３０〜５０°であることが好ましく、また図２Ｂに示すように、上辺直線部１１ａと下辺直線部１１ｂとの間の厚さ方向の間隔Ｄはワイヤー径Ｔの３倍もしくはそれ以上となっていることが好ましい。ワイヤー径Ｔの好ましい例は３〜３．５ｍｍである。   FIG. 2 shows a preferred embodiment of the mesh body 1, which is configured by connecting wires 11 bent in a zigzag shape as described below. As shown in FIGS. 2 and 3, the wire is bent in a zigzag shape when viewed from the top (FIG. 2A), spirally toward the extension direction (FIG. 3), and an ellipse when viewed from the front. (FIG. 2B). That is, as shown in FIG. 3, the wire 11 is bent in a state in which the substantially straight upper side straight line part 11a and the lower side straight line part 11b are joined by a bent part 11c between them. As shown in FIG. 2A, the angle R formed by the upper straight line portion 11a and the lower straight line portion 11b is preferably 30 to 50 °, and as shown in FIG. 2B, the upper straight line portion 11a and the lower straight line portion 11b It is preferable that the distance D in the thickness direction is 3 times the wire diameter T or more. A preferred example of the wire diameter T is 3 to 3.5 mm.

上記のように折曲形成されたワイヤー１１は、図３に示すように２つのワイヤーの屈曲部１１ｃが互いに係合し得るように次々に連結され、結果として図２に示すような網目１ａを有する網体１が構成される。   The wires 11 bent as described above are connected one after another so that the bent portions 11c of the two wires can be engaged with each other as shown in FIG. 3, resulting in a mesh 1a as shown in FIG. A net body 1 is formed.

上記ワイヤーの上辺直線部１１ａと下辺直線部１１ｂとの成す角度を上記のように３０〜５０°とすることにより、構成された網体に生じる網目１ａは、一方の対角線が他方の対角線より長い菱形となる。網体は長い対角線方向の網体強度が極めて大きくなり、長い対角線方向を地山斜面の圧力が最も大きく作用する方向、即ち斜面の上下方向へ合わせることにより、網体の強度的機能を充分に発現させることができる。網目１ａの寸法の例としては、短い方の対角線長さが５０〜１５０ｍｍ、長い方の対角線長さが５０〜２００ｍｍである。構成された網体１は厚さ寸法Ｗ（図２Ｂ）を持った立体的構造となり、このような比較的厚みのある立体的構造であることによって、網体１で被覆した斜面上に生じる植生を保護する作用も果たす。   By setting the angle formed by the upper side straight line portion 11a and the lower side straight line portion 11b to 30 to 50 ° as described above, the mesh 1a generated in the configured mesh body has one diagonal line longer than the other diagonal line. It becomes a diamond. The mesh body has a very large net strength in the long diagonal direction. By aligning the long diagonal direction to the direction where the pressure on the natural slope is the greatest, that is, the vertical direction of the slope, the strength function of the net body is sufficiently Can be expressed. As an example of the dimensions of the mesh 1a, the shorter diagonal length is 50 to 150 mm, and the longer diagonal length is 50 to 200 mm. The constructed net body 1 has a three-dimensional structure having a thickness dimension W (FIG. 2B), and the vegetation generated on the slope covered with the net body 1 due to such a relatively thick three-dimensional structure. Also serves to protect.

上記のワイヤー１１は引張強度１７７０Ｎ／ｍｍ２以上の硬鋼線であることが好ましい。また、ワイヤー１１には防食処理が施されていることが好ましく、有利な防食処理としては、図４に示すように、硬鋼線（ワイヤー）１１Ａの表面に先ずＺｎ／Ａｌメッキ１１Ｂを施し、その上に飽和ポリエステル（ＰＥＴ）の被覆１１Ｃを設ける方法が例挙される。しかしながら、他の防食処理も適用可能である。 The wire 11 is preferably a hard steel wire having a tensile strength of 1770 N / mm 2 or more. In addition, the wire 11 is preferably subjected to anticorrosion treatment. As an advantageous anticorrosion treatment, as shown in FIG. 4, first, Zn / Al plating 11B is applied to the surface of the hard steel wire (wire) 11A, An example is a method of providing a saturated polyester (PET) coating 11C thereon. However, other anticorrosion treatments are also applicable.

図５は支圧板３の例を示すものであって、平面的に見た形状としては、多角形（ａ）、楕円形（ｂ）、円形（ｃ）などが挙げられ、側面的に見た形状は平板状であることが好ましい。支圧板３の中央にはアンカー頭部２Ａと係合する透孔３ａが形成してある。図６は図５（ｃ）の支圧板の拡大尺側面図を示しており、下部周縁部３ｂは、下記のように網体と接触した際に網体に損傷を与えないよう、面取りされて丸みを付された形状となされている。支圧板３の下面には図６に示すように複数の突起３ｃが設けてあり、これら突起は、網体上の支圧板を下記のように押下するときに網体の網目と係合し、支圧板と網体との相対的な滑りが生じないように作用する。   FIG. 5 shows an example of the bearing plate 3, and the shape seen in a plane includes a polygon (a), an ellipse (b), a circle (c), etc. The shape is preferably flat. A through hole 3 a that engages with the anchor head 2 </ b> A is formed in the center of the bearing plate 3. FIG. 6 shows an enlarged side view of the bearing plate of FIG. 5 (c), and the lower peripheral edge 3b is chamfered so as not to damage the net when it contacts the net as described below. It has a rounded shape. A plurality of protrusions 3c are provided on the lower surface of the support plate 3 as shown in FIG. 6, and these protrusions engage with the mesh of the mesh body when the support plate on the mesh body is pressed as follows. It acts so that relative sliding between the bearing plate and the net does not occur.

支圧板３の寸法の例としては、平面的に見て、（ａ）の場合の長手方向寸法、（ｂ）の場合の長径、又は（ｃ）の場合の直径が約２０ｃｍ〜１ｍ、側面から見た場合の（ａ）〜（ｃ）の高さ（厚さ）が約１０〜３０ｃｍである。材料としてはコンクリート、金属、プラスチック、繊維強化プラスチック（ＦＲＰ）が好ましいが、他の材料であってもよい。   As an example of the dimensions of the bearing plate 3, when viewed in plan, the longitudinal dimension in the case of (a), the major axis in the case of (b), or the diameter in the case of (c) is about 20 cm to 1 m, from the side surface When viewed, the height (thickness) of (a) to (c) is about 10 to 30 cm. The material is preferably concrete, metal, plastic, or fiber reinforced plastic (FRP), but may be other materials.

次に、図７〜１３を参照して、本発明方法の第１実施形態について詳細に説明する。   Next, a first embodiment of the method of the present invention will be described in detail with reference to FIGS.

図７は、地山の表層Ｇ２及び深層（不動層）Ｇ１を、斜面に沿った断面（図１中のＶＩＩ−ＶＩＩ線に沿った地山断面に相当）にて示すものであって、これら表層と深層との間にはすべり面Ｓがあり、表層Ｇ２はこのすべり面Ｓに沿って崩落し、崩落方向にある道路、鉄道、建築物などに被害を及ぼす虞がある。   FIG. 7 shows the surface layer G2 and the deep layer (non-moving layer) G1 of the natural ground in a cross section along the slope (corresponding to the natural ground cross section along the line VII-VII in FIG. 1). There is a slip surface S between the surface layer and the deep layer, and the surface layer G2 collapses along the slip surface S, possibly causing damage to roads, railways, buildings, etc. in the collapse direction.

第１実施形態によれば、上記地山表層Ｇ２の滑り発生を防止するために、先ずアンカー２が上記のようにして設置される。アンカー設置後、図７に示すように、地山面（斜面）Ｍのアンカー頭部２Ａ周辺に、前記支圧板が進入可能の凹所４が支圧板定着位置として形成され、凹所４の底部が支圧板定着面ＭＢとして形成される。この凹所４は、例えば、支圧板の平面視最大寸法よりも若干大きな直径を有する丸孔であり、この丸孔の深さは、隣り合う支圧板間の距離に応じて、約２０〜３０ｃｍの範囲で選択される。しかしながら、この値は限定的なものではなく、網体の剛性や地山の土質などに応じて上記範囲外の様々な値を選択し得ることは明らかである。また、凹所４の形状は丸孔に限らず、支圧板の平面視輪郭形状に相似するものであってもよい。凹所４の周縁部は滑らかな弧状になされ、後述のように網体１が強圧的に摺接するときに網体に局部的な集中荷重が掛からないようにしておくことが好ましい。 According to the first embodiment, in order to prevent the natural ground surface layer G2 from slipping, the anchor 2 is first installed as described above. After the anchor is installed, as shown in FIG. 7, a recess 4 into which the support plate can enter is formed as a support plate fixing position around the anchor head 2 </ b> A on the natural ground surface (slope) M, and the bottom of the recess 4. There is formed a pressure bearing plate fixing surface M B. The recess 4 is, for example, a round hole having a diameter slightly larger than the maximum size of the bearing plate in plan view, and the depth of the round hole is about 20 to 30 cm depending on the distance between the adjacent bearing plates. The range is selected. However, this value is not limited, and it is obvious that various values outside the above range can be selected according to the rigidity of the net body and the soil texture of the natural ground. Further, the shape of the recess 4 is not limited to a round hole, and may be similar to the contour shape in plan view of the bearing plate. The peripheral portion of the recess 4 is formed in a smooth arc shape, and it is preferable that a local concentrated load is not applied to the net when the net 1 is slidably contacted as described later.

上記凹所４の形成は、アンカー２の設置に先立って、又は設置後に手作業または削孔機によって行なわれる。   The formation of the recess 4 is performed manually or by a drilling machine prior to or after installation of the anchor 2.

次いで、前記凹所４を形成した地山面Ｍの凹所４以外の網体展延設置面ＭＡには網体が略平坦な状態（図１０参照）に展延設置される。 Then, the mesh member spreading installation surface M A non-recess 4 of Chiyamamen M forming the recess 4 mesh member is spread placed on substantially flat state (see FIG. 10).

図８は網体の展延設置方法の好ましい例を示すものであって、この例によれば、ロール状に巻かれた一定幅の単位網体１Ｕが斜面上方に置かれ、ロール外周側の網体端部１Ｕａが地山に固定され、次いで網体ロールが斜面下方へ向けて転動落下される。これによってロール外周から次々に網体部分が解放され、解放され終わったときに保護すべき斜面の一部が上端から下端まで縦方向に延びる単位網体１Ｕによって覆われる。   FIG. 8 shows a preferred example of a method for spreading and arranging a net body. According to this example, a unit net body 1U having a constant width wound in a roll shape is placed above a slope, The net body end 1Ua is fixed to the natural ground, and then the net roll rolls down and rolls down the slope. As a result, the net portions are released one after another from the outer periphery of the roll, and a part of the slope to be protected when the release is completed is covered with the unit net 1U extending in the vertical direction from the upper end to the lower end.

図９は、上記のような単位網体１Ｕの転動解放を斜面横方向に隣接して３回行なった状態を平面的に示すものである。この場合、２つの単位網体１Ｕの互いに隣接する側端部が、凹部４の成す２つの隣り合う縦列の中間位置に来るように、単位網体１Ｕの幅寸法と凹部４の形成位置を選定することが好ましい。隣接する２つの単位網体１Ｕは多数のクリップ５によって結合されている。具体的には、結合すべき２つの単位網体の側端網目列を、網目を合わせて互いに重ね合わせ、上下に重なり合った一対の網目における上辺直線部１１ａ同士（図３参照）及び／又は下辺直線部１１ｂ同士をクリップ５により結合する。   FIG. 9 is a plan view showing a state in which the rolling release of the unit network 1U as described above is performed three times adjacent to each other in the lateral direction of the slope. In this case, the width dimension of the unit net body 1U and the formation position of the concave portion 4 are selected so that the side end portions adjacent to each other of the two unit net bodies 1U come to the middle position between two adjacent columns formed by the concave portion 4. It is preferable to do. Two adjacent unit nets 1 </ b> U are connected by a number of clips 5. Specifically, the side edge mesh rows of the two unit nets to be joined are overlapped with each other, and the upper side straight line portions 11a (see FIG. 3) and / or the lower side of the pair of meshes overlapped vertically. The straight portions 11 b are joined together by the clip 5.

上記のようにして網体１を網体展延設置面ＭＡ上に展延設置した後、図１０に示すように、支圧板３を網体１の上方から各アンカー２のアンカー頭部２Ａに取り付ける。この取付けは、支圧板３中央に形成されている透孔３ａに、雄ネジ部材として形成されているアンカー頭部２Ａを通し、更に支圧板上に突出したアンカー頭部に雌ネジ部材６を螺着することによって行なわれる。 After spreading placed mesh member 1 on netting spread installation surface M A as described above, as shown in FIG. 10, the bearing capacity plate 3 from above the netting 1 of each anchor 2 anchor head 2A Attach to. In this attachment, the anchor head 2A formed as a male screw member is passed through the through hole 3a formed at the center of the pressure bearing plate 3, and the female screw member 6 is screwed into the anchor head protruding further on the pressure bearing plate. It is done by wearing.

次に、雄ネジ部材としてのアンカー頭部２Ａに対して雌ネジ部材６を回すことにより、支圧板３が凹所４に向けて押し下げられる。このような支圧板の押し下げ作業は、網体１の周辺部に位置する支圧板から始めることが好ましい。   Next, the bearing plate 3 is pushed down toward the recess 4 by turning the female screw member 6 with respect to the anchor head 2A as the male screw member. It is preferable that such a pressure plate pressing operation is started from a pressure plate located in the periphery of the net body 1.

支圧板３の押し下げの際、支圧板３の下面に設けた突起３ｃ（図６参照）はそれぞれ網体１の対向する網目に係合し、支圧板に対する網体の滑り移動を防止する。このような突起３ｃの作用は、網体周縁部における支圧板定着の際に特に有効である。   When the support plate 3 is pushed down, the protrusions 3c (see FIG. 6) provided on the lower surface of the support plate 3 engage with the meshes facing the mesh body 1 to prevent the mesh body from sliding relative to the support plate. Such an action of the projections 3c is particularly effective when fixing the bearing plate at the periphery of the net body.

支圧板３の押し下げ作業が進行するに従って支圧板下部の網体部分は徐々に凹所４内に引き込まれ、その結果網体１は面的に引っ張られ、引き伸ばされる状態になり、網体伸延方向の遊びの限界を越えたところで網体には緊張力が掛かり始め、この緊張力は支圧板が凹所４の定着面ＭＢに近接するにつれて増大する。 As the pressure plate 3 is pushed down, the net portion at the bottom of the pressure plate is gradually drawn into the recess 4, and as a result, the net 1 is pulled and stretched across the surface, and the direction in which the net is extended. of the net body beyond the limits of the play start takes tensioning force, the tension increases as bearing capacity plate close to the fixing plane M B of the recess 4.

網体１の緊張力の大きさは、上記雌ネジ部材６を回転する際のトルク（回転モーメント）を検知することによって確認することができる。従って、緊張力の管理は雌ネジ部材６のトルク管理によって達成される。   The magnitude of the tension of the mesh body 1 can be confirmed by detecting the torque (rotational moment) when rotating the female screw member 6. Therefore, the management of the tension force is achieved by the torque management of the female screw member 6.

図１１に示すように、全ての支圧板３をそれぞれ対応する凹所４内に定着した時点で、網体１には所期の大きさの緊張力がもたらされ、従って地山面は所期の緊張力を持った網体１によって押えられた状態になる。その結果、地山表層Ｇ２は、このような緊張力を持った網体１とアンカー２との作用により、滑りの生じない安定した状態に保持される。即ち、緊張力を持った網体１とアンカー２との作用により、表層Ｇ２のすべり発生は未然に阻止される。   As shown in FIG. 11, when all the bearing plates 3 are fixed in the corresponding recesses 4 respectively, the net body 1 is provided with a tension of the desired magnitude, so that the ground surface is It is in a state of being pressed by the net body 1 having the tension of the period. As a result, the natural ground surface layer G2 is held in a stable state without slippage by the action of the net body 1 and the anchor 2 having such tension. That is, the occurrence of slippage of the surface layer G2 is prevented by the action of the net body 1 and the anchor 2 having tension.

支圧板３の押し下げの際、支圧板の下部周縁に設けた面取り部３ｂ（図６参照）は網体１を損傷しないよう作用するが、更に網体損傷防止効果を高めるために、図１２に示すように、網体１と支圧板３との間にゴム、ウレタン等から成る緩衝材７１を介装し、更に網体１の下側に同様の緩衝材７２を配置することが好ましい。緩衝材７１は、支圧板３の定着作業時及び図１３に示す定着後において、網体１と支圧板３との直接的な接触を防止し、網体１を形成するワイヤー上の防食処理部が破損しないように保護する。また、緩衝材７２もワイヤー上の防食処理部を保護する。 When the support plate 3 is pushed down, the chamfered portion 3b (see FIG. 6) provided on the lower peripheral edge of the support plate acts so as not to damage the mesh body 1. In order to further enhance the effect of preventing the mesh body damage, FIG. as shown, a rubber, that interposed a buffer member 71 made of urethane or the like, further to place under similar to side cushioning material 7 2 of the mesh member 1 preferably between netting 1 and the Bearing plate 3 . Cushioning material 7 1, after fixing shown in fixing work during and 13 Bearing plate 3 to prevent direct contact between the mesh member 1 and the bearing capacity plate 3, anticorrosion treatment on the wire forming the mesh member 1 Protect parts from damage. Further, the cushioning material 7 2 also protects the anticorrosion treatment unit on the wire.

上記緩衝材７２を上記のようにゴム、ウレタン等からなる板材にて形成する代わりに、支圧板下に植物繊維製織物、化学材料製不織布等の材料によって製造される袋体（図示せず）を設け、この袋体内に一時的流動性のある注入材、例えばセメントミルクを注入し、この注入材を固化させるようにしてもよい。袋体、注入材の具体例は特開２０００−８０６５８号公報に記載されており、この公報に記載されている内容は上記緩衝材７２の形成においても適合する。場合によっては、緩衝材７１も同様に袋体と注入材を用いて形成してもよい。 The cushioning material 7 2 Instead of forming a rubber, made of urethane or the like sheet material as described above, vegetable textile fabrics under pressure bearing plate, not the bag (shown to be produced by materials such as chemicals nonwoven fabric ), And an injecting material having temporary fluidity, for example, cement milk, may be injected into the bag to solidify the injecting material. Bag, specific examples of injection material is described in JP 2000-80658, the contents described in this publication also compatible in forming the cushioning material 7 2. Optionally, the buffer material 71 may also be formed similarly using bag and the infusion material.

上記支圧板３の定着後、凹所４は土で埋められ、地山面全体が平坦になされる。その際、埋め込み用の土に植物の種子を混入しておくことが好ましい。また、凹所４内の支圧板３、雌ネジ部材６、アンカー頭部２Ａには土が直接触れないように養生を施しておくことが好ましい。   After the bearing plate 3 is fixed, the recess 4 is filled with soil, and the entire ground surface is made flat. At that time, it is preferable to mix plant seeds in the embedding soil. In addition, it is preferable that curing is performed so that soil does not directly touch the bearing plate 3, the female screw member 6, and the anchor head 2 </ b> A in the recess 4.

上記網体１と地山面Ｍ、特に網体展延設置面ＭＡとの間には植物の種子を付着させたシート材（図示せず）を介装しておくことが好ましい。このシート材の地山面への配設は、上記網体１の展延設置に先立って行なわれる。このようにシート材を介装することにより地山面の植生生育を促進し、斜面を緑化して斜面の景観を早期に良好なものにすることができる。 The network element 1 and Chiyamamen M, it is preferable particularly between the mesh member spreading installation surface M A to be interposed sheet material adhered with the seeds of plants (not shown). The sheet material is disposed on the ground surface prior to the spread installation of the net body 1. By interposing the sheet material in this way, vegetation growth on the natural ground surface can be promoted, and the slope can be greened to improve the landscape of the slope early.

［第２の実施の形態］
この第２実施の形態において、網体１及び支圧板３については第１実施形態の場合と同様のものが使用され、またアンカー２の設置、網体１の展延設置、支圧板３の定着についても第１実施形態の場合と同様の方法で行なわれる。 [Second Embodiment]
In the second embodiment, the mesh body 1 and the bearing plate 3 are the same as those in the first embodiment, the anchor 2 is installed, the mesh body 1 is spread, and the bearing plate 3 is fixed. Is performed in the same manner as in the first embodiment.

第２実施形態では、支圧板定着箇所の地山面をその周辺の地山面に対して低位置にする状態をもたらすために、第１実施形態の場合の凹所形成に代えて土嚢が使用される。   In the second embodiment, a sandbag is used instead of forming a recess in the case of the first embodiment in order to bring the ground surface of the bearing plate fixing portion to a lower position with respect to the surrounding ground surface. Is done.

第２実施形態による方法の手順について図１４及び図１５を参照しつつ以下に説明する。   The procedure of the method according to the second embodiment will be described below with reference to FIGS.

アンカー２の設置後、アンカー設置箇所の間の領域（例えば図１中の４つのアンカー３ａ，３ｂ，３ｃ，３ｄの設置箇所に囲まれた領域）の中央位置に土嚢が所望の高さに配置される。土嚢の配置は１つの大きな土嚢を用いて行ってもよいし、或いは比較的小さな土嚢を複数個並べるか積み重ねることによって行なってもよい。図１４及び図１５は複数個の土嚢８を配置した場合を示している。図示のように、土嚢８の配置は、支圧板３の定着面ＭＢが土嚢８の頂部にてもたらされる網体展延設置面ＭＡの高さに対して低位置にあるようになされる。 After the anchor 2 is installed, the sandbag is arranged at a desired height at the center position of the area between the anchor installation positions (for example, the area surrounded by the installation positions of the four anchors 3a, 3b, 3c, 3d in FIG. 1). Is done. The arrangement of the sandbag may be performed using one large sandbag, or a plurality of relatively small sandbags may be arranged or stacked. 14 and 15 show a case where a plurality of sandbags 8 are arranged. As shown, the arrangement of the sandbags 8 is adapted to fixing plane M B of Bearing plate 3 is in the lower position relative to the height of the mesh member spreading installation surface M A posed at the top of the sandbags 8 .

上記アンカー設置箇所の間の領域すべて（或いは場合によって一部）について土嚢の配置を行なった後、図１４に示すように、網体１の展延設置、及びアンカー頭部２Ａに対する支圧板３の取付けが第１実施形態と同じ方法で行なわれ、その際、網体１は網体展延設置面ＭＡに接触して略平坦な状態に展延設置される。 After the sandbags are arranged in the entire area (or in some cases) between the anchor installation locations, as shown in FIG. 14, the net body 1 is spread and the support plate 3 is fixed to the anchor head 2A. mounting is performed in the same manner as the first embodiment, in which the mesh member 1 is spread placed on substantially flat state in contact with the mesh member spreading installation surface M a.

次に、雌ネジ部材６が雄ネジ部材としてのアンカー頭部２Ａに螺合され、支圧板３を定着面へ向けて押下するために、アンカー頭部に対して回転せしめられる。支圧板３の押下が進むにつれて支圧板下の網体部分は下方へ押し下げられるが、土嚢８の網体展延設置面ＭＡがこの押し下げに対抗するように網体１に作用するため、結果として網体１は当該支圧板を中心に面的に引っ張られることになり、面的な方向での遊び状態がなくなったとき網体１に緊張力が発生し、緊張力の強さは支圧板が定着面ＭＢに近づくにつれて増大する。 Next, the female screw member 6 is screwed into the anchor head 2A as a male screw member, and is rotated with respect to the anchor head in order to push the bearing plate 3 toward the fixing surface. Netting part below Bearing plate as Bearing plate 3 pressed progresses is pushed downward, but since the mesh member spreading installation surface M A sandbags 8 acts on the mesh member 1 so as to counteract this pushing down, the result As a result, the mesh body 1 is pulled in plane about the bearing plate, and when the play state in the planar direction is lost, tension is generated in the mesh body 1, and the strength of the tension force is the bearing plate. There is increased toward the fixing plane M B.

第１実施形態の場合と同様に、網体１の緊張力の大きさは、上記雌ネジ部材６を回転する際のトルク（回転モーメント）を検知することによって確認され、従って、緊張力の管理は雌ネジ部材６のトルク管理によって達成される。   As in the case of the first embodiment, the magnitude of the tension force of the mesh body 1 is confirmed by detecting the torque (rotational moment) when the female screw member 6 is rotated. Is achieved by torque management of the female screw member 6.

支圧板３と定着面ＭＢとの間には、実施形態１において述べたものと同様の袋体と注入材で構成される着座部材（図示せず）を配置し、定着面ＭＢに対する支圧板３の安定的着座をもたらすようにすることが好ましい。 Between the Bearing plate 3 and the fixing surface M B, placing the seating member (not shown) composed of injected material similar bag as those described in embodiment 1, supporting the fixing surface M B It is preferable to provide a stable seating of the platen 3.

図１５に示すように、全ての支圧板３をそれぞれ対応する定着面ＭＢに定着した時点で、網体１には所期の大きさの緊張力がもたらされ、従って地山面Ｍは所期の緊張力を持った網体１によって押えられた状態になる。その結果、地山表層Ｇ２は、このような緊張力を持った網体１とアンカー２との作用により、滑りの生じない安定した状態に保持される。即ち、緊張力を持った網体１とアンカー２との作用により、表層Ｇ２のすべり発生は未然に阻止される。このように、網体１には土嚢の高さに応じた緊張力がもたらされ、土嚢を介しての網体１による所要の地山表層押圧作用がもたらされる。 As shown in FIG. 15, all Bearing plate 3 at the time of the fixing in the corresponding fixing surface M B, respectively, tension of the intended size is brought to netting 1, thus Chiyamamen M is It is in a state of being pressed by the net 1 having the desired tension. As a result, the natural ground surface layer G2 is held in a stable state without slippage by the action of the net body 1 and the anchor 2 having such tension. That is, the occurrence of slippage of the surface layer G2 is prevented by the action of the net 1 having tension and the anchor 2. In this way, the net body 1 is provided with a tension force corresponding to the height of the sandbag, and the net body 1 is pressed by the net body 1 through the sandbag.

上記土嚢８の周囲には、網体１と地山面Ｍとの間に空間Ｋが生じるが、この空間には網体上からの吹き付けによって充填材を注入することが好ましい。充填材としては、植生吹付け材、例えば種子混入腐葉土と水を混合したもの、或いは植物短繊維、土、硬化材（例えば、少量のセメントまたは類似物）、種子及び水を混合したものが有効である。充填材中の植物の種子は充填材固化後に発芽し、保護斜面に早期に望ましい植生をもたらす。また、土嚢内にも植物の種子が混入されていることが好ましい。   Around the sandbag 8, a space K is formed between the net body 1 and the ground surface M, and it is preferable to inject a filler into the space by spraying from above the net body. Effective fillers include vegetation sprays, such as seed-mixed humus and water, or plant short fibers, soil, hardener (eg, a small amount of cement or similar), seeds and water. It is. Plant seeds in the filling material germinate after the filling material solidifies, resulting in desirable vegetation early on the protective slope. Moreover, it is preferable that the seed of a plant is also mixed in the sandbag.

上記の第１及び第２実施形態による方法を併用してもよく、このような併用方法も本発明の範囲に含まれるものである。   The methods according to the first and second embodiments may be used in combination, and such a combined method is also included in the scope of the present invention.

地山斜面に展延設置された網体と、この網体を地山斜面に固定しておくための多数のアンカーとの相互関係の例を模式的に示す斜視図である。It is a perspective view which shows typically the example of the mutual relationship between the net body extended and installed in the natural ground slope, and many anchors for fixing this net body to the natural ground slope. 本発明方法において用いられる網体の例を示しており、（Ａ）は網体の平面図、（Ｂ）は網体の側面図である。The example of the net | network used in the method of this invention is shown, (A) is a top view of a net | network, (B) is a side view of a net | network. 折曲したワイヤーを連結して網体を構成する様子を示す斜視図である。It is a perspective view which shows a mode that a bent wire is connected and a mesh body is comprised. 網体を構成するワイヤーへの防食処理方法を示す、ワイヤーの部分的斜視図である。It is a partial perspective view of the wire which shows the anti-corrosion treatment method to the wire which comprises a net body. 本発明方法に用いられる支圧板の３つの例を平面図で示すものである。Three examples of bearing plates used in the method of the present invention are shown in plan view. 図５（ｃ）に示す支圧板の拡大尺側面図である。It is an enlarged scale side view of the bearing plate shown in FIG.5 (c). 本発明の第１実施形態による方法の凹所形成工程を示す、地山斜面の縦断面図である。It is a longitudinal cross-sectional view of a natural mountain slope which shows the recess formation process of the method by 1st Embodiment of this invention. 第１実施形態による方法の網体展延設置工程を示す、地山斜面の縦断面図である。It is a longitudinal cross-sectional view of a natural mountain slope which shows the net body spreading installation process of the method by 1st Embodiment. 網体の展延設置例の平面図である。It is a top view of the example of spreading installation of a net. 第１実施形態による方法の支圧板取付け工程を示す、地山斜面の縦断面図である。It is a longitudinal cross-sectional view of a natural mountain slope which shows the bearing plate attachment process of the method by 1st Embodiment. 第１実施形態による方法の支圧板定着後の状態を示す、地山斜面の縦断面図である。It is a longitudinal cross-sectional view of a natural slope which shows the state after the bearing plate fixation of the method by 1st Embodiment. 第１実施形態による方法において、支圧板下の網体部分の保護方法を示す、支圧板取付け工程時の地山斜面の部分的縦断面図である。In the method by 1st Embodiment, it is a partial longitudinal cross-sectional view of the natural slope at the time of a bearing plate attachment process which shows the protection method of the net body part under a bearing plate. 図１２に示す工程実施後における支圧板定着時の地山斜面の部分的縦断面図である。It is a partial longitudinal cross-sectional view of the natural mountain slope at the time of bearing plate fixation after the process shown in FIG. 本発明の第２実施形態による方法の土嚢配置工程、網体展延設置工程、支圧板取付け工程を説明する、地山斜面の部分的縦断面図である。It is a partial longitudinal cross-sectional view of a natural mountain slope explaining the sandbag arrangement | positioning process of the method by 2nd Embodiment of this invention, a net body spreading installation process, and a bearing plate attachment process. 第２実施形態による方法の支圧板定着後の状態を示す、地山斜面の部分的縦断面図である。It is a partial longitudinal cross-sectional view of a natural mountain slope which shows the state after the bearing plate fixation of the method by 2nd Embodiment.

符号の説明Explanation of symbols

１ 網体
１Ｕ 単位網体ロール
２ アンカー
２Ａ アンカー頭部
２Ｂ アンカー基部
３ 支圧板
４ 凹所
５ クリップ
６ 雌ネジ部材
７ 緩衝材
８ 土嚢
Ｃ 固定材
Ｇ１ 地山深層（不動層）
Ｇ２ 表層
Ｍ 地山面（斜面）
ＭＡ 網体展延設置面
ＭＢ 支圧板定着面
Ｓ すべり面
Ｋ 空間 DESCRIPTION OF SYMBOLS 1 Net body 1U Unit net body roll 2 Anchor 2A Anchor head 2B Anchor base 3 Bearing plate 4 Recess 5 Clip 6 Female screw member 7 Buffer material 8 Sandbag C Fixing material G1 Deep ground layer (non-moving layer)
G2 Surface M Ground surface (slope)
M A network element spreadable mounting surface M B Bearing plate fixing surface S slip plane K-space

Claims (5)

高強度で耐食性のあるワイヤーで製作した網体を、保護すべき地山面に展延設置し、この網体の上面から支圧板を所定間隔置きに点在状態に配置し、前記支圧板配置箇所に相当して予め地山に設置されているアンカーを用いて網体上の支圧板を地山面に向けて押し下げ、最終的に支圧板を地山に定着して網体を地山に固定する斜面保護方法において、
前記地山の支圧板定着面をその周辺の網体展延設置面よりも低い位置に設け、
前記網体展延設置工程において、網体を前記網体展延設置面上に略平坦な状態に設置し、
支圧板定着のための前記支圧板押下工程において、支圧板下の網体部分を前記網体展延設置面への網体設置時の高さ位置からその下方の支圧板定着面へ向けて押し下げ、この押し下げの際の前記網体展延設置面上の網体部分の随伴降下を前記網体展延設置面によって妨げることによって、支圧板周囲の網体部分を面的に伸長させ且つ緊張させ、前記支圧板の定着完了時に網体に所要の緊張力をもたらすことを特徴とする斜面保護方法。 A mesh body made of high-strength and corrosion-resistant wire is spread and installed on the ground surface to be protected, and the bearing plates are arranged at predetermined intervals from the upper surface of the mesh body. The bearing plate on the mesh body is pushed down toward the ground surface using anchors installed in advance in the ground corresponding to the location, and finally the bearing plate is fixed to the ground and the mesh body is turned into the ground. In the slope protection method to fix,
The bearing plate fixing surface of the natural ground is provided at a position lower than the surrounding network spreading installation surface,
In the net body extension installation step, the net body is installed in a substantially flat state on the net body extension installation surface,
In the pressure plate press-down step for fixing the pressure plate, the mesh body part under the pressure plate is pushed down from the height position when the mesh body is installed on the mesh body installation surface to the pressure plate fixing surface below it. Further, the mesh body portion around the bearing plate is stretched and tensioned by obstructing the accompanying descending of the mesh body portion on the mesh body extending installation surface during the depression by the network body extending installation surface. The slope protecting method according to claim 1, wherein a required tension is applied to the net when the bearing plate is fixed. 前記支圧板定着面が、前記支圧板が進入可能であるように地山面に設けられた凹所によって形成され、前記網体展延設置面が前記凹所以外の地山面によって形成されていることを特徴とする請求項１に記載の斜面保護方法。   The bearing plate fixing surface is formed by a recess provided in the ground surface so that the bearing plate can enter, and the network body extending installation surface is formed by a ground surface other than the recess. The slope protecting method according to claim 1, wherein: 前記網体展延設置面が、前記網体の展延設置に先立って、アンカー間領域に前記支圧板定着面よりも上方へ突出するように１つ又は複数の土嚢を配置することによって形成されていることを特徴とする請求項１に記載の斜面保護方法。   Prior to the spread installation of the mesh body, the mesh body spread installation surface is formed by arranging one or a plurality of sandbags so as to protrude above the support plate fixing surface in the region between anchors. The slope protecting method according to claim 1, wherein: 前記土嚢が、複数の支圧板で包囲された領域の中央部に配置されることを特徴とする請求項３に記載の斜面保護方法。   The slope protecting method according to claim 3, wherein the sandbag is disposed at a central portion of an area surrounded by a plurality of pressure bearing plates. 前記網体を構成するワイヤーは硬鋼線製であることを特徴とする請求項１〜４の一つに記載の斜面保護方法。   5. The slope protecting method according to claim 1, wherein the wire constituting the mesh body is made of hard steel wire.
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JP2008038371A (en) * 2006-08-02 2008-02-21 Raito Kogyo Co Ltd Slope stabilizing structure, slope stabilizing method, and slope greening method
JP2009249825A (en) * 2008-04-01 2009-10-29 Toa Grout Kogyo Co Ltd Covering net-type slope protection method
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JP2016044429A (en) * 2014-08-21 2016-04-04 吉佳エンジニアリング株式会社 Pressure plate and slope protection system
JP2016056506A (en) * 2014-09-05 2016-04-21 吉佳エンジニアリング株式会社 Wire net for slope protection and slope protection method using the wire net for slope protection
JP2017036592A (en) * 2015-08-10 2017-02-16 吉佳エンジニアリング株式会社 Pressure receiving plate
JP2019007154A (en) * 2017-06-21 2019-01-17 吉佳エンジニアリング株式会社 Method of protecting slope having existing slope frame and system of protecting slope
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JP2020117983A (en) * 2019-01-28 2020-08-06 吉佳エンジニアリング株式会社 Slope protection structure and slope protection method
CN113062269A (en) * 2021-04-13 2021-07-02 西安工业大学 River course protector for garden planning

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JPH11336082A (en) * 1998-05-22 1999-12-07 Shigeru Une Stabilization construction method of mountain ground surface
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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008038371A (en) * 2006-08-02 2008-02-21 Raito Kogyo Co Ltd Slope stabilizing structure, slope stabilizing method, and slope greening method
JP2009249825A (en) * 2008-04-01 2009-10-29 Toa Grout Kogyo Co Ltd Covering net-type slope protection method
JP2012122253A (en) * 2010-12-08 2012-06-28 Raito Kogyo Co Ltd Bearing assembly, slope stabilization structure, and slope stabilization method
JP2016044429A (en) * 2014-08-21 2016-04-04 吉佳エンジニアリング株式会社 Pressure plate and slope protection system
JP2016056506A (en) * 2014-09-05 2016-04-21 吉佳エンジニアリング株式会社 Wire net for slope protection and slope protection method using the wire net for slope protection
JP2017036592A (en) * 2015-08-10 2017-02-16 吉佳エンジニアリング株式会社 Pressure receiving plate
JP2019007154A (en) * 2017-06-21 2019-01-17 吉佳エンジニアリング株式会社 Method of protecting slope having existing slope frame and system of protecting slope
CN109556769A (en) * 2018-12-24 2019-04-02 成都尚德铁科智能科技有限公司 A kind of level type force cell device of slipping through the net for plastic concrete
JP2020117983A (en) * 2019-01-28 2020-08-06 吉佳エンジニアリング株式会社 Slope protection structure and slope protection method
JP7217515B2 (en) 2019-01-28 2023-02-03 吉佳エンジニアリング株式会社 Slope protection structure and slope protection method
CN113062269A (en) * 2021-04-13 2021-07-02 西安工业大学 River course protector for garden planning

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