JP2002038477A - Stabilizing method for slope face - Google Patents
Stabilizing method for slope faceInfo
- Publication number
- JP2002038477A JP2002038477A JP2000254622A JP2000254622A JP2002038477A JP 2002038477 A JP2002038477 A JP 2002038477A JP 2000254622 A JP2000254622 A JP 2000254622A JP 2000254622 A JP2000254622 A JP 2000254622A JP 2002038477 A JP2002038477 A JP 2002038477A
- Authority
- JP
- Japan
- Prior art keywords
- lock bolt
- outer tube
- drilling
- rod
- ground
- 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.)
- Granted
Links
Landscapes
- Piles And Underground Anchors (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、地山等の斜面へ埋
設して定着させるロックボルトに関し、特に崩れやすい
地山に削孔するロックボルト孔の孔壁を保護して施工す
るとともに、張力を付与して斜面の安定化を図ったロッ
クボルトに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock bolt buried and fixed on a slope such as a ground, and more particularly, to a rock bolt which is drilled in a fragile ground while protecting the hole and constructing the rock bolt. And to a lock bolt for stabilizing slopes.
【０００２】[0002]
【従来の技術】トンネルや法面の補強等のためにロック
ボルトが用いられている。従来このロックボルトを地山
斜面に設置する場合、地盤を削孔し、その孔にロックボ
ルトを配設するとともにグラウト材を充填してロックボ
ルトの全長を地盤に対し定着していた。したがって、ロ
ックボルトにはグラウンドアンカーのように張力が付与
されてなく、地盤表面の支圧板（本明細書ではコンクリ
ートやモルタルの支圧板の他、法枠あるいは座金のみの
場合等を含んで支圧板という）は、自重で斜面を押える
だけであって、ロックボルトを介した積極的な張力によ
る地盤が動かないようにするための押圧作用はもってい
なかった。2. Description of the Related Art Lock bolts are used for reinforcing tunnels and slopes. Conventionally, when installing this lock bolt on the slope of the ground, the ground has been drilled, the lock bolt is disposed in the hole, and a grout material is filled to fix the entire length of the lock bolt to the ground. Therefore, the tension is not applied to the rock bolt as in the case of the ground anchor, and the support plate on the ground surface (in this specification, a support plate including concrete or mortar, as well as a legal frame or a washer only) is used. ) Merely pressed down the slope by its own weight, and did not have a pressing action to prevent the ground from moving due to positive tension through the lock bolt.
【０００３】また、ロックボルトを用いて法面等を補強
する場合、削孔機に装着された穿孔用ロッドで地盤にロ
ックボルト孔を穿孔し、これにロックボルトを挿入して
グラウト材を注入し定着する。この場合、地盤が崩壊し
やすくロックボルト孔が崩れやすい場所においては、穿
孔用ロッドを用いずに、ロックボルト自体にビットを取
付けて、このロックボルト自体を削孔機に装着して穿孔
する自穿孔型ロックボルトが知られている。In the case of reinforcing a slope or the like by using a lock bolt, a rock bolt hole is drilled in the ground with a drill rod mounted on a drilling machine, and a rock bolt is inserted into the hole to inject a grout material. And settle. In this case, in a place where the ground is easily collapsed and the lock bolt hole is easily collapsed, a bit is attached to the lock bolt itself without using a drilling rod, and the lock bolt itself is attached to a drilling machine to drill a hole. Perforated lock bolts are known.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、このよ
うな自穿孔型ロックボルトを用いた場合においても、例
えば樹木が生い茂るような柔らかい表土の地山では、ロ
ックボルトで穿孔してもその周囲のロックボルト孔が崩
れてくり粉が残りグラウト材が確実に注入できない場合
がある。例えば地山が粘性土地質の場合、粘着力が強く
ロックボルトを連結するカプラやビット周辺に粘性土が
こびりついて除去できないケースが非常に多い。この場
合、水送り等によりくり粉を排出する方法もあるが、粘
性土の場合には完全には排出できず、また多量の水を送
れば斜面を弛める結果となり好ましくない。However, even when such a self-drilling type lock bolt is used, even in the case of a soft topsoil where trees are overgrown, for example, even if the rock bolt is drilled, the surrounding rock is not locked. In some cases, the bolt holes collapse, leaving powder and the grout material cannot be reliably injected. For example, when the ground is a viscous soil, there are very many cases where the viscous soil sticks around the coupler or the bit connecting the lock bolt with strong adhesive strength and cannot be removed. In this case, there is a method of discharging the cutting powder by water feeding or the like. However, in the case of viscous soil, it is not possible to completely discharge the powder, and if a large amount of water is fed, the slope is loosened, which is not preferable.
【０００５】また、地質が砂質の場合には、穿孔しなが
らくり粉を排出しても砂質のロックボルト孔が崩れ孔が
埋まってしまう。あるいは、地質が崖錐のような空隙の
多い地山においては、崖錐自体が崩れやすいとともに、
グラウト材注入時にグラウト材が空隙に沿って逸脱し、
所定の範囲に所定量のグラウト材を注入できない場合が
生じる。[0005] In addition, when the geology is sandy, even if drilling powder is discharged while drilling, the sandy rock bolt holes collapse and the holes are filled. Alternatively, in a mountainous area with a lot of voids such as a talus, the talus itself is easily collapsed,
When the grout is injected, the grout deviates along the gap,
In some cases, a predetermined amount of grout material cannot be injected into a predetermined range.
【０００６】このようにロックボルト孔の崩れ等により
くり粉が排出されなくなるとロックボルトが進まなくな
り穿孔できなくなる。また穿孔できたとしても、ロック
ボルト孔の崩れ等によりグラウト材の注入が妨げられる
と、定着不良となり、ロックボルトとしての安定した所
定の法面補強機能が得られない。As described above, when the cutting powder is not discharged due to the collapse of the lock bolt hole or the like, the lock bolt does not advance and cannot be drilled. Even if the holes can be pierced, if the grout material is prevented from being injected due to the collapse of the lock bolt holes or the like, fixing failure occurs, and a stable predetermined slope reinforcing function as the lock bolt cannot be obtained.
【０００７】このような不具合は、特に大型の削孔機を
搬入できないような樹木等が生い茂った軟らかい地山等
において問題となる。すなわち、このような場所では、
足場や大掛かりな作業台を組むことなく小型で容易に持
ち運び可能で簡易に設置可能な削孔機を用いて表層部に
削孔することが要求される。[0007] Such a problem becomes a problem particularly in a soft ground where trees or the like are overgrown so that a large drilling machine cannot be carried in. That is, in such places,
It is required to drill holes in the surface layer using a drilling machine that is small, easily portable, and can be easily installed without assembling a scaffold or a large work table.
【０００８】本発明は上記従来技術を考慮したものであ
って、ロックボルトに張力を付与して斜面の安定化を図
るとともに、崩壊しやすい表層部を有する地盤に対し、
ロックボルト孔の崩れを防止し安定して削孔を可能とす
る斜面の安定方法の提供を目的とする。The present invention has been made in consideration of the above-mentioned prior art, and is intended to stabilize a slope by applying tension to a lock bolt and to provide a ground having a surface layer which is easily collapsed.
It is an object of the present invention to provide a method for stabilizing a slope which prevents a rock bolt hole from collapsing and enables stable drilling.
【０００９】[0009]
【課題を解決するための手段】前記目的を達成するた
め、本発明では、先端にビットを備えた穿孔用ロッドを
外管で覆い、この穿孔用ロッドを削孔機に装着するとと
もに、この穿孔用ロッドに対し前記外管を回転可能に保
持する外管連行アダプタを介してこの外管を前記削孔機
に取付け、前記ビットが外管の先端から所定の長さだけ
突出した状態でこの外管を連行させながら前記穿孔用ロ
ッドで斜面を削孔してロックボルトを配設し、該ロック
ボルト先端部の所定長さ部分のみをグラウト材で定着
し、定着後このロックボルトを緊張させて張力を付与
し、張力を付与した状態で、このロックボルト頭部を支
圧板を介して斜面に固定したことを特徴とする斜面の安
定方法を提供する。In order to achieve the above object, according to the present invention, a drilling rod having a bit at its tip is covered with an outer tube, and the drilling rod is mounted on a drilling machine. The outer tube is attached to the drilling machine via an outer tube entraining adapter that rotatably holds the outer tube with respect to the rod, and the bit is projected from the tip of the outer tube by a predetermined length. While the pipe is entrained, a slope is drilled with the drilling rod, a lock bolt is provided, and only a predetermined length portion of the tip of the lock bolt is fixed with a grout material, and after fixing, the lock bolt is tensioned. Provided is a method for stabilizing a slope, characterized in that the head of the lock bolt is fixed to the slope via a support plate while tension is applied.
【００１０】この構成によれば、穿孔用ロッド（自穿孔
型のロックボルトを含む）を鋼管等からなる外管で覆っ
た状態でこの鋼管とともにロッド先端のビットを地山内
に進入させて削孔するため、鋼管により孔壁の崩れが防
止されくり粉が確実に排出されるとともにグラウト材の
注入が確実に行われる。これにより、大型の削孔機を用
いることなく崩壊しやすい地盤に簡易な削孔機で小径の
ロックボルト孔を穿孔可能にするとともに、グラウト材
を確実に注入してロックボルトの信頼性を高めることが
できる。According to this structure, the drill bit (including the self-drilling type lock bolt) is covered with the outer pipe made of a steel pipe or the like, and the bit at the tip of the rod and the steel pipe are made to enter the ground with the steel pipe to drill. Therefore, the collapse of the hole wall is prevented by the steel pipe, the boring powder is reliably discharged, and the grout material is reliably injected. This makes it possible to drill small-diameter rock bolt holes with a simple drilling machine on a ground that easily collapses without using a large drilling machine, and increases the reliability of rock bolts by reliably injecting grout material. be able to.
【００１１】このようにロックボルト周囲に確実に空間
部を形成してロックボルトを配設した後、先端の所定長
さをグラウト材で定着し、このロックボルトを緊張させ
ることにより定着部以外の部分のロックボルトが伸びて
張力が付与される。この張力が付与された状態でロック
ボルトの頭部を地盤表面の支圧板（法枠等を含む）に固
定することにより、支圧板がロックボルトの張力により
積極的に斜面を押圧して斜面の安定化が図られる。After the space is reliably formed around the lock bolt and the lock bolt is disposed, the predetermined length of the tip is fixed with a grout material, and the lock bolt is tensioned to thereby fix the portion other than the fixing portion. A portion of the lock bolt is extended to apply tension. By fixing the head of the lock bolt to a support plate (including a frame) on the ground surface in a state where the tension is applied, the support plate positively presses the slope by the tension of the lock bolt, and Stabilization is achieved.
【００１２】好ましい構成例では、前記ロックボルトの
定着部を前記外管で覆い、この定着部を覆う外管に異形
加工および複数の孔加工を施すことを特徴としている。In a preferred configuration example, the fixing portion of the lock bolt is covered with the outer tube, and the outer tube covering the fixing portion is subjected to deforming and a plurality of holes.
【００１３】この構成によれば、外管によりロックボル
ト周囲の地盤が崩れることなく空間部が確保されグラウ
ト材が確実に充填されロックボルトが外管に定着される
とともに、外管に設けた波形やネジ加工等の異形加工に
より外管の定着力が高まり、さらに孔加工によりグラウ
ト材が外管の外面側に漏出して地盤に対する強い定着力
が得られる。このように外管を介してロックボルトを定
着することにより、グラウト材の接触面積が大きくなる
ため、定着力を増加させることができる。According to this structure, the space around the rock bolt is secured by the outer tube without collapsing the ground, the grout material is securely filled, the lock bolt is fixed to the outer tube, and the waveform provided on the outer tube is provided. The fixing force of the outer tube is increased by deforming such as screwing and screwing, and the grout material leaks to the outer surface side of the outer tube by the hole forming, so that a strong fixing force to the ground can be obtained. By fixing the lock bolt through the outer tube in this manner, the contact area of the grout material is increased, so that the fixing force can be increased.
【００１４】[0014]
【発明の実施の形態】以下図面を参照して本発明の実施
の形態について説明する。図１は本発明の実施形態を示
し、（Ａ）は分解図、（Ｂ）は使用時の組立て状態を示
す。削孔機２０は、ドリル本体２１とシャンクアダプタ
２２を介してこのドリル本体に連結されたスイベル２３
とからなる。ドリル本体２１には掘削駆動用のエア（又
は水）が送られ、スイベル２３には掘削した土や岩盤等
のくり粉を排出するためのエア（又は水）が供給され
る。Embodiments of the present invention will be described below with reference to the drawings. 1A and 1B show an embodiment of the present invention, wherein FIG. 1A shows an exploded view, and FIG. 1B shows an assembled state in use. The drilling machine 20 includes a swivel 23 connected to the drill body via a drill body 21 and a shank adapter 22.
Consists of Drilling drive air (or water) is sent to the drill main body 21, and swivel 23 is supplied with air (or water) for discharging excavated dust such as soil and bedrock.
【００１７】穿孔用ロッド（またはロックボルト、以下
単にロッドという）２４の先端に掘削用のビット２５が
装着される。ロッド２４は鋼管からなる外管２６内に挿
入されほぼ全体が覆われる。このロッド２４は、外管連
行アダプタ１を介してその後端部がスイベル２３の接続
口２３ａに螺合する。ロッド２４の外面にはネジが形成
され、このネジに対応してスイベル２３の接続口２３ａ
に雌ネジ（不図示）が形成されている。A drill bit 25 is attached to the tip of a drilling rod (or lock bolt, hereinafter simply referred to as a rod) 24. The rod 24 is inserted into an outer tube 26 made of a steel tube and is almost entirely covered. The rear end of the rod 24 is screwed into the connection port 23 a of the swivel 23 via the outer pipe entrainment adapter 1. A screw is formed on the outer surface of the rod 24, and the connection port 23 a of the swivel 23 corresponds to the screw.
Is formed with a female screw (not shown).
【００１８】外管連行アダプタ１は、後述（図２）のよ
うに、本体４とナット部材（ロッド結合部）５からな
り、ナット部材５の内面に形成された雌ネジ（不図示）
にロッド２４が螺合するとともにこれを通過してスイベ
ル２３の接続口２３ａにネジ結合される。この外管連行
アダプタ１は、ロッド２４に対し外管２６を相互に回転
可能に保持するものである。この場合、ロッド２４は、
スイベルの接続口２３ａのネジおよびナット部材のネジ
の２つのネジによるダブルナット効果により一定位置に
固定保持される。さらに、ロッドの回転方向とナット部
材の締付け方向を合せておくことにより、削孔中にナッ
ト部材が緩むことなく確実にロッドに固定保持され外管
連行アダプタを確実に保持する。The outer tube entrainment adapter 1 comprises a main body 4 and a nut member (rod connecting portion) 5 as described later (FIG. 2), and a female screw (not shown) formed on the inner surface of the nut member 5.
The rod 24 is screwed into and connected to the connection port 23a of the swivel 23 with a screw. The outer tube entrainment adapter 1 holds the outer tube 26 rotatably with respect to the rod 24. In this case, the rod 24
It is fixedly held at a fixed position by a double nut effect of two screws, the screw of the connection port 23a of the swivel and the screw of the nut member. Further, by aligning the rotation direction of the rod and the tightening direction of the nut member, the nut member is securely fixed and held on the rod without being loosened during drilling, and the outer tube entrainment adapter is securely held.
【００１９】ロッド２４の先端に装着されたビット２５
としては、この例では拡孔ビットが示されている。この
拡孔ビットは、先端に切刃２５ａを有するとともに側面
に切刃２５ｂを突出して有し、側面の切刃２５ｂの回転
により外管２６の径より太い径の孔を掘削可能とし、か
つ削孔後にロッド２４を引抜けばロッドの軸が外管の軸
とずれて拡孔ビットが外管内に収まりそのまま引抜いて
ビットを回収することができる。ビット２５としては、
このような拡孔ビットの他に、外管径より外側に複数の
放射方向に切刃を有するビット（この場合には回収はで
きない）や、先端および側面に外管内に収まる径の切刃
を有する２段ビット（この場合には回収および交換可
能）等種類を問わずいかなる形式のビットを取付けても
よい。Bit 25 attached to the tip of rod 24
In this example, a piercing bit is shown. This hole-expanding bit has a cutting edge 25a at the tip and a cutting edge 25b protruding from the side surface. By rotating the cutting edge 25b on the side surface, a hole having a diameter larger than the diameter of the outer tube 26 can be excavated and cut. If the rod 24 is pulled out after the hole, the axis of the rod is displaced from the axis of the outer tube, and the hole-expanding bit is accommodated in the outer tube. As bit 25,
In addition to such a widening bit, a bit having a plurality of cutting edges in the radial direction outside the outer tube diameter (in this case, it cannot be collected), and a cutting edge having a diameter that can be accommodated in the outer tube at the tip and side surfaces. Any type of bit may be attached, irrespective of its type, such as a two-stage bit (in this case, recoverable and replaceable).
【００２０】このようなビット２５は、外管２６の先端
部から一定の距離だけ突出させて外管２６との干渉を避
ける必要がある。特に下向きあるいは斜め下向きに削孔
する場合、外管が自重でロッド先端方向に移動するとビ
ット２５に接触して回転してしまう。これを避けるた
め、本発明では外管連行アダプタ１により外管２６がロ
ッド２４に対し軸方向に移動しないように保持してい
る。It is necessary that such a bit 25 protrudes from the tip of the outer tube 26 by a predetermined distance to avoid interference with the outer tube 26. In particular, when drilling downward or obliquely downward, if the outer tube moves toward the rod tip by its own weight, it contacts the bit 25 and rotates. In order to avoid this, in the present invention, the outer tube 26 is held by the outer tube entrainment adapter 1 so as not to move in the axial direction with respect to the rod 24.
【００２１】図２は上記本発明の実施形態で用いる外管
連行アダプタ１を示し、（Ａ）は左側面図、（Ｂ）は正
面図、（Ｃ）は右側面図である。この外管連行アダプタ
１は、前述のように、削孔機２０に取付けられ、ロッド
２４を覆う外管２６を保持して穿孔するための施工部材
である。外管連行アダプタ１は、外管２６（図１）が接
続される外管結合部２と溶接等によりこれと一体結合さ
れた連結部３とからなる本体４を有する。この本体４の
連結部３にナット部材からなるロッド結合部５が回転可
能に連結される。このロッド結合部（ナット部材）５に
ロッド２４が螺合して定着される。FIG. 2 shows the outer tube entrainment adapter 1 used in the embodiment of the present invention, wherein (A) is a left side view, (B) is a front view, and (C) is a right side view. As described above, the outer pipe entrainment adapter 1 is a construction member that is attached to the drilling machine 20 and holds and drills the outer pipe 26 that covers the rod 24. The outer tube entraining adapter 1 has a main body 4 including an outer tube connecting portion 2 to which an outer tube 26 (FIG. 1) is connected, and a connecting portion 3 integrally connected thereto by welding or the like. A rod connecting portion 5 made of a nut member is rotatably connected to the connecting portion 3 of the main body 4. The rod 24 is screwed and fixed to the rod connecting portion (nut member) 5.
【００２３】外管結合部２は円筒スリーブ状であって、
外周面に外管端部が螺合する雄ネジ６が形成される。連
結部３は、複数の（この例では４個の）連結片７とその
端部に固定された連結板８とからなる。この連結板８を
ロッド結合部５がこれと一体の座金９で挟むことによ
り、本体４とロッド結合部５が相互に回転可能に連結さ
れる。この連結部３の各連結片７間は大きく開口し、切
削したくり粉を排出するためのくり粉排出用開口１０を
形成する。The outer tube connecting portion 2 has a cylindrical sleeve shape,
A male screw 6 with which the outer tube end is screwed is formed on the outer peripheral surface. The connecting portion 3 includes a plurality of (four in this example) connecting pieces 7 and a connecting plate 8 fixed to an end thereof. The body 4 and the rod connecting portion 5 are rotatably connected to each other by sandwiching the connecting plate 8 by the washer 9 integrated with the rod connecting portion 5. A large opening is formed between the connecting pieces 7 of the connecting portion 3 to form an opening 10 for discharging the cutting dust for discharging the cut dust.
【００２４】六角ナット状のロッド結合部５の内面には
ロッド２４（図１）の外ネジに螺合する雌ネジ１１が形
成され、ロッド２４がこれに螺合して一体的に固定保持
される。ロッド結合部５は六角ナット形状に限らずスパ
ナ等が掛けられる形状であればよい。また、このナット
部分（スパナ掛け部分）は連結板８の内面側に設けても
よい。A female screw 11 is formed on the inner surface of the hexagon nut-shaped rod connecting portion 5 to be screwed with the external screw of the rod 24 (FIG. 1), and the rod 24 is screwed to this and integrally fixed and held. You. The rod connecting portion 5 is not limited to the hexagonal nut shape, and may be any shape as long as a spanner or the like can be hung thereon. The nut portion (spanner hook portion) may be provided on the inner surface side of the connecting plate 8.
【００２５】このような外管連行アダプタを用いて、外
管で覆われたロッドにより、ロッドとともに外管を進行
させながら地山斜面を削孔する。これにより、崩れやす
い表層部を削孔する場合でも穿孔した孔が崩れることな
くロッド全長に沿ってグラウト注入空間を確実に形成す
ることができる。この削孔作業は、ロッドが固い安定地
盤（基岩）に達するまで、ロッド２４および外管２６を
連結して継ぎ足しながら繰返して行われる。ロッド２４
は、接続するロッド端部同士が対向して螺入するカプラ
を介して連結される。外管２６は、接続する一方の端部
に形成した雄ネジを相手側の端部の雌ネジに螺合するこ
とにより連結される。Using such an outer pipe entrainment adapter, a ground slope is drilled by the rod covered with the outer pipe while moving the outer pipe together with the rod. This makes it possible to reliably form the grout injection space along the entire length of the rod without collapsing the perforated hole even when the surface layer that is easily collapsed is drilled. This drilling operation is repeatedly performed while connecting and adding the rod 24 and the outer pipe 26 until the rod reaches the solid stable ground (base rock). Rod 24
Are connected via a coupler into which the rod ends to be connected face each other and are screwed in. The outer tube 26 is connected by screwing a male screw formed at one end to be connected to a female screw at the other end.
【００２６】安定地盤までの距離は削孔前の現場調査に
より予め分かっているため、それに合せて外管やロッド
の長さおよび接続本数等が決められる。この場合、安定
地盤に達したことは、表層部との地質の違いによるくり
粉により確認できる。Since the distance to the stable ground is known in advance by a site survey before drilling, the length of the outer pipe and rod, the number of connections, and the like are determined in accordance with the distance. In this case, the fact that the ground has reached a stable ground can be confirmed by cuttings due to a difference in geology from the surface layer.
【００２７】安定地盤に達したら、現在削孔中のロッド
および外管をそのままある程度の長さだけ（あるいは残
りの長さすべてを）安定地盤に埋入させる。続いて外管
を接続しないでロッドのみを接続して必要な定着長さだ
け安定地盤内を掘削する。このとき外管連行アダプタは
外しておいてもよい。図３（Ａ）はこのような安定地盤
をロッド２４のみで削孔している状態を示す。この例で
は２段ビット２５ａが示されロッド２４同士はカプラ２
７で接続されている。この場合、最初から２段ビットを
用いて穿孔してもよいし、あるいは安定地盤に達するま
では、前述の拡孔ビットを用い、安定地盤に達したらこ
れを回収して図示した２段ビットに交換して穿孔し、こ
れをそのまま埋設してもよい。When the stable ground is reached, the rod and the outer pipe currently being drilled are buried in the stable ground for a certain length (or all of the remaining length). Subsequently, only the rod is connected without connecting the outer pipe, and the stable ground is excavated by the required anchoring length. At this time, the outer tube entrainment adapter may be removed. FIG. 3A shows a state where such a stable ground is drilled with only the rod 24. In this example, a two-stage bit 25a is shown, and the rods 24 are
7 are connected. In this case, the drilling may be performed using a two-stage bit from the beginning, or the above-described perforated bit may be used until the stable ground is reached. It may be replaced and perforated and buried as it is.
【００２８】安定地盤を削孔したら、ロッド２４が穿孔
用ロッドである場合にはこれを引抜いてロックボルト２
４’と入れ替え、またロッド２４が自穿孔型ロックボル
トの場合にはそのままこれをロックボルト２４’とし、
図３（Ｂ）に示すように、中空のロックボルト２４’を
通してセメントミルク等のグラウト材を注入する。この
とき、外管２６の先端部にパッカー（不図示）を詰めて
外管内にグラウト材が入らないようにする。これによ
り、外管２６から突出した先端部分のロックボルト２
４’のみがグラウト材により安定地盤に定着される。After drilling the stable ground, if the rod 24 is a piercing rod, pull it out to remove the lock bolt 2.
4 ', and when the rod 24 is a self-drilling type lock bolt, this is used as it is as a lock bolt 24',
As shown in FIG. 3B, grout material such as cement milk is injected through a hollow lock bolt 24 '. At this time, a packer (not shown) is packed at the tip of the outer tube 26 to prevent the grout material from entering the outer tube. As a result, the lock bolt 2 at the tip portion protruding from the outer tube 26
Only 4 'is fixed to the stable ground by the grout material.
【００２９】他の定着構造例として、安定地盤内のロッ
クボルト２４’を外管で覆ってもよい。この場合、外管
２６の外面にネジ加工や波形あるいは溝その他の凹凸状
の異形加工を施すとともに、複数の小孔あるいはスリッ
ト等の孔加工を施しておく。このような外管でロックボ
ルトを覆うことにより、ロックボルト周囲の地盤が崩れ
ることなく空間部が確保されグラウト材が確実に充填さ
れロックボルトが外管に定着されるとともに、外管に設
けた波形やネジ加工等の異形加工により外管の定着力が
高まり、さらに孔加工によりグラウト材が外管の外面側
に漏出して地盤に対する強い定着力が得られる。このよ
うに外管を介してロックボルトを定着することにより、
グラウト材の接触面積が大きくなるため、定着力を増加
させることができる。As another example of the fixing structure, the lock bolt 24 'in the stable ground may be covered with an outer tube. In this case, the outer surface of the outer tube 26 is subjected to screw processing, corrugation, grooves, or other irregularly shaped processing, and is also subjected to hole processing such as a plurality of small holes or slits. By covering the lock bolt with such an outer tube, the space around the lock bolt is not collapsed, a space is secured, the grout material is securely filled, the lock bolt is fixed to the outer tube, and the lock bolt is provided on the outer tube. Deformation processing such as corrugation and screw processing increases the fixing power of the outer pipe, and furthermore, the grout material leaks to the outer surface side of the outer pipe by drilling, so that a strong fixing power to the ground can be obtained. By fixing the lock bolt through the outer tube in this way,
Since the contact area of the grout material is increased, the fixing force can be increased.
【００３０】この場合、所定の定着力を得るために必要
な長さだけグラウト材が充填され他の部分にグラウト材
が入らないように外管の途中にパッカー（不図示）を詰
めておく。In this case, a packer (not shown) is packed in the middle of the outer tube so that the grout material is filled by a length necessary to obtain a predetermined fixing force and the grout material does not enter other portions.
【００３１】定着部以外の外管内にはオイルあるいはグ
リース等の防錆材を充填しておく。さらにロックボルト
表面に亜鉛メッキ等の防錆処理あるいは樹脂コーティン
グを施してもよく、また防錆シートで覆ってもよい。防
錆材を充填する場合、ロックボルトが外管で覆われてい
るため地盤の崩れがなく防錆材料が確実にロックボルト
に作用し防錆機能が高められる。The outer tube other than the fixing portion is filled with a rust preventive material such as oil or grease. Further, the surface of the lock bolt may be subjected to a rust prevention treatment such as galvanization or a resin coating, or may be covered with a rust prevention sheet. When the rust preventive material is filled, the rock bolt is covered with the outer tube, so that the ground does not collapse and the rust preventive material reliably acts on the lock bolt, thereby enhancing the rust preventive function.
【００３２】なお、定着部以外の部分を覆う外管は、異
形加工や孔加工を施していない外管を用いてもよい。ま
た、グラウト材はロックボルトに沿って設けたグラウト
供給用チューブ等を介して注入してもよい。It should be noted that, as the outer tube covering a portion other than the fixing portion, an outer tube which has not been subjected to deforming or drilling may be used. The grout material may be injected through a grout supply tube or the like provided along the lock bolt.
【００３３】ロックボルトは、前述のように、穿孔用の
ロッドでロックボルト孔を削孔した後，穿孔用ロッドを
引抜いてロックボルト材や異形鋼棒等を挿入してもよい
し、あるいはロックボルト自体で穿孔しそのまま埋設す
る自穿孔型のロックボルトを用いてもよい。自穿孔型の
ロックボルトとすれば、回収の手間が省ける。穿孔用ロ
ッドを用いれば、ロックボルトの材料の選択の幅が広が
りコストの低減等が図られる。As described above, the lock bolt may be formed by piercing the lock bolt hole with a piercing rod and then pulling out the piercing rod and inserting a lock bolt material, a deformed steel bar, or the like. A self-drilling lock bolt that is pierced by the bolt itself and buried as it is may be used. If a self-drilling lock bolt is used, labor for collection can be saved. The use of the piercing rod increases the range of choices for the material of the lock bolt, thereby reducing costs and the like.
【００３４】前述のようなビットの選択やこれを回収す
るか埋設するかの選定、あるいは外管に異形加工等を施
すかどうか及び削孔後外管を引抜くかどうか、および穿
孔用ロッドを用いるかあるいは自穿孔型ロックボルトと
するか等については、地盤の地質や周囲の状況およびコ
スト等を考慮して適宜選定する。The selection of the bit as described above, the selection of whether to collect or bury the bit, whether the outer tube is to be deformed, etc., whether the outer tube is to be pulled out after drilling, and whether the drilling rod is Whether to use a self-drilling lock bolt or the like is appropriately selected in consideration of the geology of the ground, surrounding conditions, cost, and the like.
【００３５】以上のようにして、ロックボルトの先端部
分を所定長さだけ定着させた後、このロックボルトを引
張って緊張させ張力を付与する。この張力を付与した状
態でロックボルトの頭部を地盤斜面に支圧板を介して固
定する。As described above, after the tip of the lock bolt is fixed by a predetermined length, the lock bolt is pulled and tensioned to apply tension. With this tension applied, the head of the lock bolt is fixed to the ground slope via a pressure plate.
【００３６】図４は、ロックボルト頭部の構造例を示
す。地盤斜面３０上に支圧板３１が設置され、この支圧
板３１上にロックボルト２４’の頭部が突出する。支圧
板３１は、現場打ちのコンクリートでもよいしあるいは
工場等で生産したコンクリート二次製品であってもよ
い。あるいはこの支圧板３１は斜面安定用の法枠であっ
てもよい。FIG. 4 shows an example of the structure of the lock bolt head. A support plate 31 is provided on the ground slope 30, and the head of the lock bolt 24 ′ projects on the support plate 31. The support plate 31 may be cast-in-place concrete or a concrete secondary product produced in a factory or the like. Alternatively, the support plate 31 may be a slope stabilizing legal frame.
【００３７】ロックボルト２４’は外管２６で覆われ
る。外管２６の内部および地盤との間には防錆材３２が
充填される。支圧板３１上に突出するロックボルト頭部
は、角座金３３を介してベル型のキャップ３４で覆われ
る。ロックボルト頭部にはナット３５が装着されるとと
もに、地盤斜面に対するロックボルトの傾斜角度に追従
できるように、球面ワッシャ３６および球面座金３７を
介して支圧板３１上に支持される。ベル型のキャップ３
４は、球面座金３７の側面の雄ネジと、ベル型のキャッ
プ３４内側の雌ネジとで結合される。球面座金３７の下
部のロックボルト頭部はゴムシース３８で覆われる。ベ
ル型のキャップ３４内はグリース３９で充填される。The lock bolt 24 'is covered with an outer tube 26. A rust preventive 32 is filled between the inside of the outer tube 26 and the ground. The lock bolt head projecting above the support plate 31 is covered with a bell-shaped cap 34 via a square washer 33. A nut 35 is mounted on the head of the lock bolt, and is supported on the support plate 31 via a spherical washer 36 and a spherical washer 37 so as to follow the inclination angle of the lock bolt with respect to the ground slope. Bell-shaped cap 3
4 is coupled with a male screw on the side surface of the spherical washer 37 and a female screw inside the bell-shaped cap 34. The lock bolt head below the spherical washer 37 is covered with a rubber sheath 38. The inside of the bell-shaped cap 34 is filled with grease 39.
【００３８】ナット３５を締め上げることによりロック
ボルト２４’が引張られて張力が付与される。ロックボ
ルトに張力を付与するための別の方法として、ジャッキ
等を用いて引張って緊張させ、引張った状態でくさびあ
るいはナットでロックボルトを固定してもよい。When the nut 35 is tightened, the lock bolt 24 'is pulled to apply tension. As another method for applying tension to the lock bolt, the lock bolt may be pulled and tightened using a jack or the like, and the lock bolt may be fixed with a wedge or a nut in the pulled state.
【００３９】このように、ロックボルトの先端部側を定
着部とし、これに隣接して張力を付与する自由長部を設
け、この自由長部を引張った状態で斜面に定着させるこ
とにより、支圧板から斜面に対し圧縮力が作用して斜面
の安定化が図られる。As described above, the distal end side of the lock bolt is used as a fixing portion, and a free length portion for applying tension is provided adjacent to the fixing portion. A compressive force acts on the slope from the pressure plate to stabilize the slope.
【００４０】この場合、定着部のロックボルトは定着力
を高めるために全長にわたってネジが形成された鋼材あ
るいは異形鋼棒とし、自由長部のロックボルトは両端部
にのみ接続用のネジが形成された丸棒としてもよい。ロ
ックボルト同士は端部を突き合せてカプラで螺合して連
結される。ロックボルトの材料としては例えばＰＣ鋼材
を用いることができる。In this case, the lock bolt of the fixing portion is a steel material or a deformed steel bar having a thread formed over its entire length in order to increase the fixing force, and the lock bolt of the free length portion has connection screws formed only at both ends. It may be a round bar. The lock bolts are connected with each other by abutting ends thereof and screwing with a coupler. As a material of the lock bolt, for example, a PC steel material can be used.
【００４１】ロックボルトの適当な位置に円筒状あるい
は球状のスペーサを装着し、ロックボルトが外管内の中
心位置に保持されるように構成してもよい。A cylindrical or spherical spacer may be attached to an appropriate position of the lock bolt so that the lock bolt is held at a central position in the outer tube.
【００４２】[0042]
【発明の効果】以上説明したように、本発明では、穿孔
用ロッド（自穿孔型のロックボルトを含む）を鋼管等か
らなる外管で覆った状態でこの鋼管とともにロッド先端
のビットを地山内に進入させて削孔するため、鋼管によ
り孔壁の崩れが防止されくり粉が確実に排出されるとと
もにグラウト材の注入が確実に行われる。これにより、
大型の削孔機を用いることなく崩壊しやすい地盤に簡易
な削孔機で小径のロックボルト孔を穿孔可能にするとと
もに、グラウト材を確実に注入してロックボルトの信頼
性を高めることができる。As described above, according to the present invention, a drilling rod (including a self-drilling type lock bolt) is covered with an outer pipe made of a steel pipe or the like, and a bit at the tip of the rod is placed together with the steel pipe in the ground. In this case, the hole wall is prevented from collapsing by the steel pipe, the boring powder is reliably discharged, and the grout material is reliably injected. This allows
It is possible to drill small-diameter rock bolt holes with a simple drilling machine on the easily collapsed ground without using a large drilling machine, and it is possible to increase the reliability of the rock bolts by reliably injecting grout material. .
【００４３】このようにロックボルト周囲に確実に空間
部を形成してロックボルトを配設した後、先端の所定長
さをグラウト材で定着し、このロックボルトを緊張させ
ることにより定着部以外の部分のロックボルトが伸びて
張力が付与される。この張力が付与された状態でロック
ボルトの頭部を地盤表面の支圧板（法枠等を含む）に固
定することにより、支圧板がロックボルトの張力により
積極的に斜面を押圧して斜面の安定化が図られる。After the space is securely formed around the lock bolt and the lock bolt is disposed, the predetermined length of the tip is fixed with a grout material, and the lock bolt is tensioned to thereby fix the portion other than the fixing portion. A portion of the lock bolt is extended to apply tension. By fixing the head of the lock bolt to a support plate (including a frame) on the ground surface in a state where the tension is applied, the support plate positively presses the slope by the tension of the lock bolt, and Stabilization is achieved.
【００４４】また、前記ロックボルトの定着部を前記外
管で覆い、この定着部を覆う外管に異形加工および複数
の孔加工を施す構成によれば、外管によりロックボルト
周囲の地盤が崩れることなく空間部が確保されグラウト
材が確実に充填されロックボルトが外管に定着されると
ともに、外管に設けた波形やネジ加工等の異形加工によ
り外管の定着力が高まり、さらに孔加工によりグラウト
材が外管の外面側に漏出して地盤に対する強い定着力が
得られる。このように外管を介してロックボルトを定着
することにより、グラウト材の接触面積が大きくなるた
め、定着力を増加させることができる。Further, according to the configuration in which the fixing portion of the lock bolt is covered with the outer tube and the outer tube covering the fixing portion is deformed and formed with a plurality of holes, the ground around the lock bolt collapses due to the outer tube. The space is secured without any gaps, the grout material is securely filled, the lock bolts are fixed to the outer tube, and the fixing force of the outer tube is increased by deforming the corrugated and threaded holes on the outer tube, and further drilling As a result, the grout material leaks to the outer surface side of the outer tube, and a strong fixing force to the ground can be obtained. By fixing the lock bolt through the outer tube in this manner, the contact area of the grout material is increased, so that the fixing force can be increased.
【００４５】また、外管連行アダプタを用いることによ
り、ロッドは削孔機駆動による回転と打撃により地盤を
削孔し、鋼管は回転しないで手元側で掴んでいられるの
で、穿孔の邪魔にならず、削孔作業が容易に行える。ま
た、穿孔方向にかかわらず鋼管はビットから一定の距離
を隔てて保持されビットとの干渉が避けられる。In addition, by using the outer pipe entrainment adapter, the rod drills the ground by rotation and impact driven by the drilling machine, and the steel pipe is gripped at the hand side without rotating, so that it does not hinder drilling. Drilling work can be easily performed. Further, regardless of the drilling direction, the steel pipe is held at a certain distance from the bit, and interference with the bit is avoided.
【００４６】さらに、外管連行アダプタの連結部の開口
から削孔地盤のくり粉を排出する構成によれば、くり粉
の排出性が向上し、またスイベルを削孔機よりロッド側
に取り付けることにより、より多くの水や空気を送れる
ので、くり粉が排出しやすくなり、結果として削孔性能
が向上する。Further, according to the structure for discharging the cuttings from the drilling ground through the opening of the connecting portion of the outer pipe entrainment adapter, the dischargeability of the cuttings is improved, and the swivel is attached to the rod side of the drilling machine. As a result, more water and air can be sent, so that dust is easily discharged, and as a result, drilling performance is improved.
【図１】 本発明の実施形態の構成説明図。FIG. 1 is a configuration explanatory diagram of an embodiment of the present invention.
【図２】 図１の実施形態で用いる外管連行アダプタの
構成説明図。FIG. 2 is a configuration explanatory view of an outer tube entrainment adapter used in the embodiment of FIG. 1;
【図３】 図１の実施形態による削孔施工後の作業手順
の説明図。FIG. 3 is an explanatory diagram of a work procedure after drilling according to the embodiment of FIG. 1;
【図４】 本発明に係るロックボルトの頭部構成図。FIG. 4 is a configuration diagram of a head of a lock bolt according to the present invention.
１：外管連行アダプタ、２：外管結合部、３：連結部、
４：本体、５：ロッド結合部、６：雄ネジ、７：連結
片、８：連結板、９：座金、１０：くり粉排出用開口、
１１：雌ネジ、２０：削孔機、２１：ドリル本体、２
２；シャンクアダプタ、２３：スイベル、２３ａ：接続
口、２４：穿孔用ロッド（または自穿孔型ロックボル
ト）、２４’：ロックボルト、２５：ビット、２５ａ，
２５ｂ：切刃、２６：外管、２７：カプラ、３０：地盤
斜面、３１：支圧板、３２：防錆材、３３：角座金、３
４：キャップ、３５；キャップ、３６：球面ワッシャ、
３７：球面座金、３８：ゴムシース、３９：グリース。1: outer tube entrainment adapter, 2: outer tube connection, 3: connection
4: Main body, 5: Rod connection part, 6: Male screw, 7: Connection piece, 8: Connection plate, 9: Washer, 10: Opening for cutting dust,
11: female screw, 20: drilling machine, 21: drill body, 2
2: Shank adapter, 23: swivel, 23a: connection port, 24: drilling rod (or self-piercing lock bolt), 24 ': lock bolt, 25: bit, 25a,
25b: cutting blade, 26: outer tube, 27: coupler, 30: ground slope, 31: supporting plate, 32: rust preventive material, 33: square washer, 3
4: cap, 35; cap, 36: spherical washer,
37: spherical washer, 38: rubber sheath, 39: grease.
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 2D041 GA01 GC06 GC12 GC14 2D044 EA01 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2D041 GA01 GC06 GC12 GC14 2D044 EA01
Claims (2)
で覆い、この穿孔用ロッドを削孔機に装着するととも
に、この穿孔用ロッドに対し前記外管を回転可能に保持
する外管連行アダプタを介してこの外管を前記削孔機に
取付け、前記ビットが外管の先端から所定の長さだけ突
出した状態でこの外管を連行させながら前記穿孔用ロッ
ドで斜面を削孔してロックボルトを配設し、該ロックボ
ルト先端部の所定長さ部分のみをグラウト材で定着し、
定着後このロックボルトを緊張させて張力を付与し、張
力を付与した状態で、このロックボルト頭部を支圧板を
介して斜面に固定したことを特徴とする斜面の安定方
法。An outer tube for covering a drilling rod provided with a bit at its tip with an outer tube, mounting the drilling rod on a drilling machine, and rotatably holding the outer tube with respect to the drilling rod. The outer pipe is attached to the drilling machine via a driving adapter, and the slope is drilled with the drilling rod while the outer pipe is entrained while the bit projects from the tip of the outer pipe by a predetermined length. Arranging a lock bolt, fixing only a predetermined length portion of the lock bolt tip with a grout material,
A method of stabilizing a slope, characterized in that the lock bolt is tensioned after fixing to apply tension, and the head of the lock bolt is fixed to the slope via a pressure plate in a state where the tension is applied.
い、この定着部を覆う外管に異形加工および複数の孔加
工を施したことを特徴とする請求項１に記載の斜面の安
定方法。2. The slope stabilization according to claim 1, wherein the fixing portion of the lock bolt is covered with the outer tube, and the outer tube covering the fixing portion is subjected to a deforming process and a plurality of holes. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000254622A JP4656705B2 (en) | 2000-07-23 | 2000-07-23 | Slope stabilization method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000254622A JP4656705B2 (en) | 2000-07-23 | 2000-07-23 | Slope stabilization method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002038477A true JP2002038477A (en) | 2002-02-06 |
| JP4656705B2 JP4656705B2 (en) | 2011-03-23 |
Family
ID=18743527
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000254622A Expired - Fee Related JP4656705B2 (en) | 2000-07-23 | 2000-07-23 | Slope stabilization method |
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| JP (1) | JP4656705B2 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006207220A (en) * | 2005-01-27 | 2006-08-10 | Nippon Kogen Concrete Co Ltd | Bearing pressure plate for fixation and pc member |
| CN100348804C (en) * | 2005-07-08 | 2007-11-14 | 吴德兴 | Multifunction pulp stopping plug for anchor rod and its pulp filling adaptor |
| JP2011012539A (en) * | 2009-06-03 | 2011-01-20 | Tokyo Seiko Co Ltd | Hybrid anchor and anchor method |
| JP2012246703A (en) * | 2011-05-30 | 2012-12-13 | Daichi:Kk | Anchor installation washer |
| JP2018509523A (en) * | 2015-12-30 | 2018-04-05 | ソ ドン カンパニー リミテッドＳｅｏ Ｄｏｎｇ Ｃｏ．，Ｌｔｄ． | Manufacturing method and support material assembly of super high strength steel pipe support material using boron steel |
| JP2018168589A (en) * | 2017-03-29 | 2018-11-01 | 三井住友建設株式会社 | Sloped face stabilization method |
| CN110374651A (en) * | 2019-07-18 | 2019-10-25 | 北京交通大学 | The double group material full length fastening devices of self-drilling type and anchoring construction method |
| CN113202089A (en) * | 2021-04-02 | 2021-08-03 | 周其健 | High-pressure rotary-spraying anti-floating anchor rod construction equipment and method adopting ribbed drilling method |
| JP7173684B2 (en) | 2018-12-06 | 2022-11-16 | 株式会社ケー・エフ・シー | How to build a rock bolt structure |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7173686B2 (en) | 2018-12-11 | 2022-11-16 | 株式会社ケー・エフ・シー | Self-drilling rock bolt and its construction method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61180230U (en) * | 1985-04-25 | 1986-11-10 | ||
| JPS63167807A (en) * | 1986-12-27 | 1988-07-11 | Nippon Soiru Kogyo Kk | Permanent anchor structure |
| JPH02210199A (en) * | 1989-02-10 | 1990-08-21 | Aoki Corp | Rock bolt or ground anchor |
| JPH09111761A (en) * | 1995-10-17 | 1997-04-28 | Nippon Steel Metal Prod Co Ltd | Bearing pressure metal fitting for stabilizing slope and slope stabilizing method |
| JPH09250287A (en) * | 1996-03-16 | 1997-09-22 | Tobishima Corp | Natural ground drilling device |
| JPH10266200A (en) * | 1997-03-28 | 1998-10-06 | Moriya Koki Kk | Preparation method of ground anchor, preparation method of lock bolt and these pressure-receiving structure |
| JPH11131487A (en) * | 1997-10-27 | 1999-05-18 | Okabe Co Ltd | Slope stabilizing method and structure for preservation of natural scenery |
-
2000
- 2000-07-23 JP JP2000254622A patent/JP4656705B2/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61180230U (en) * | 1985-04-25 | 1986-11-10 | ||
| JPS63167807A (en) * | 1986-12-27 | 1988-07-11 | Nippon Soiru Kogyo Kk | Permanent anchor structure |
| JPH02210199A (en) * | 1989-02-10 | 1990-08-21 | Aoki Corp | Rock bolt or ground anchor |
| JPH09111761A (en) * | 1995-10-17 | 1997-04-28 | Nippon Steel Metal Prod Co Ltd | Bearing pressure metal fitting for stabilizing slope and slope stabilizing method |
| JPH09250287A (en) * | 1996-03-16 | 1997-09-22 | Tobishima Corp | Natural ground drilling device |
| JPH10266200A (en) * | 1997-03-28 | 1998-10-06 | Moriya Koki Kk | Preparation method of ground anchor, preparation method of lock bolt and these pressure-receiving structure |
| JPH11131487A (en) * | 1997-10-27 | 1999-05-18 | Okabe Co Ltd | Slope stabilizing method and structure for preservation of natural scenery |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006207220A (en) * | 2005-01-27 | 2006-08-10 | Nippon Kogen Concrete Co Ltd | Bearing pressure plate for fixation and pc member |
| JP4683939B2 (en) * | 2005-01-27 | 2011-05-18 | 株式会社安部日鋼工業 | Fixing pressure plate and PC member |
| CN100348804C (en) * | 2005-07-08 | 2007-11-14 | 吴德兴 | Multifunction pulp stopping plug for anchor rod and its pulp filling adaptor |
| JP2011012539A (en) * | 2009-06-03 | 2011-01-20 | Tokyo Seiko Co Ltd | Hybrid anchor and anchor method |
| JP2012246703A (en) * | 2011-05-30 | 2012-12-13 | Daichi:Kk | Anchor installation washer |
| JP2018509523A (en) * | 2015-12-30 | 2018-04-05 | ソ ドン カンパニー リミテッドＳｅｏ Ｄｏｎｇ Ｃｏ．，Ｌｔｄ． | Manufacturing method and support material assembly of super high strength steel pipe support material using boron steel |
| JP2018168589A (en) * | 2017-03-29 | 2018-11-01 | 三井住友建設株式会社 | Sloped face stabilization method |
| JP7173684B2 (en) | 2018-12-06 | 2022-11-16 | 株式会社ケー・エフ・シー | How to build a rock bolt structure |
| CN110374651A (en) * | 2019-07-18 | 2019-10-25 | 北京交通大学 | The double group material full length fastening devices of self-drilling type and anchoring construction method |
| CN113202089A (en) * | 2021-04-02 | 2021-08-03 | 周其健 | High-pressure rotary-spraying anti-floating anchor rod construction equipment and method adopting ribbed drilling method |
| CN113202089B (en) * | 2021-04-02 | 2022-10-11 | 周其健 | High-pressure rotary-spraying anti-floating anchor rod construction equipment and method adopting ribbed drilling method |
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