JPS5937400B2 - Lock bolt construction method - Google Patents
Lock bolt construction methodInfo
- Publication number
- JPS5937400B2 JPS5937400B2 JP15069179A JP15069179A JPS5937400B2 JP S5937400 B2 JPS5937400 B2 JP S5937400B2 JP 15069179 A JP15069179 A JP 15069179A JP 15069179 A JP15069179 A JP 15069179A JP S5937400 B2 JPS5937400 B2 JP S5937400B2
- Authority
- JP
- Japan
- Prior art keywords
- mortar
- ground
- pipe
- injection pipe
- rock bolt
- 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
Links
Landscapes
- Rock Bolts (AREA)
Description
【発明の詳細な説明】
従来のロックボルト工法では、削岩機またはエアオーガ
ーにて穿孔し、穿孔後、モルタルフィーダによってモル
タルを穿孔部内に填充し、その中に人力または機械力に
よってロックボルトを押込んでいる。[Detailed Description of the Invention] In the conventional rock bolt construction method, a hole is drilled with a rock drill or an air auger, and after the hole is drilled, mortar is filled into the hole using a mortar feeder, and the rock bolt is pushed into the hole using manual or mechanical force. I'm reading.
前記従来の方法によれば穿孔部の孔壁が荒れ易く、モル
タルの填充が悪い場合や、ボルトの挿入に難渋するとい
う問題がある。According to the above-mentioned conventional method, there are problems in that the hole wall of the perforated portion is likely to become rough, which may result in poor filling of mortar and difficulty in inserting bolts.
本発明はこのような問題点を解決するために提案された
ものであって、外管に圧力流体噴射管を同心状に内装し
、同噴射管より圧力流体を噴射しながら前記外管を地山
に貫入して同地山に穿孔部を掘削し、次いで前記噴射管
を引抜いたのち、モルタル注入管が貫挿固定され、且つ
ロックボルトが相対的に可摺動的に貫挿されたモルタル
注入用パツキンを前記外管に嵌装し、次いで前記ロック
ボルト先端を地山に碇着したのち前記モルタル注゛入管
より穿孔部にモルタルを注入しながら前記外管及びモル
タル注入管を引抜くことを特徴とするロックボルト工法
に係るものである。The present invention has been proposed to solve these problems, and includes a pressure fluid injection tube concentrically installed in the outer tube, and a pressurized fluid injection tube is injected from the outer tube while the outer tube is grounded. A mortar in which a mortar injection pipe is penetrated and fixed after penetrating a mountain and drilling a perforation part in the same ground, and then pulling out the injection pipe, and a rock bolt is penetrated and inserted in a relatively movable manner. Fitting the injection packing into the outer tube, and then anchoring the tip of the rock bolt to the ground, and then pulling out the outer tube and the mortar injection tube while injecting mortar into the perforation from the mortar injection tube. This relates to the rock bolt construction method, which is characterized by:
本発明においては前記したように、圧力流体噴射管を単
独で使用することなく、同噴射管を外管に同心状に内装
してその先端より地山に圧力流体を噴射し、同地山を掘
削しながら外管を地山に貫入して穿孔するようにしたの
で、穿孔部内周壁面から穿孔部内への土砂の崩落が前記
外管によって防止され、孔壁の荒れない穿孔部が掘削さ
れる。As described above, in the present invention, instead of using the pressure fluid injection pipe alone, the injection pipe is installed concentrically in the outer pipe, and pressurized fluid is injected into the ground from the tip of the pipe to inject the same into the ground. Since the outer pipe penetrates the ground while drilling, the outer pipe prevents earth and sand from collapsing from the inner circumferential wall surface of the hole into the hole, and the hole wall is not roughened. .
而して本発明はこの後、前記圧力流木噴射管を外管より
引抜き、モルタル注入管が貫挿固定され、且つロックボ
ルトが相対的に可摺動的に貫挿されたモルタル注入用パ
ツキンを前記外管に嵌装し、前記ロックボルト先端を地
山に強制的に貫入するか、急結剤を介して地山に固結す
ることによって、ロックボルト先端を地山に碇着し、前
記モルタル注入管よりモルタルを注入しながら外管及び
モルタル注入管とモルタル注入用パツキンを穿孔部より
抜取るようにしたので、モルタルは前記パツキン前面に
おいて十分に地山を圧密しながら、圧着され、穿孔部に
密実に填充され、穿孔部内周壁とも一体に固結され、ロ
ックボルトは穿孔部に確実に碇着されるものである。Then, the present invention provides a mortar injection packing in which the pressure driftwood injection pipe is pulled out from the outer pipe, the mortar injection pipe is inserted and fixed therein, and the lock bolt is inserted in a relatively slidable manner. The tip of the rock bolt is anchored to the ground by fitting it into the outer pipe and forcibly penetrating the tip of the rock bolt into the ground, or by hardening it to the ground via a fast-setting agent. While injecting mortar from the mortar injection pipe, the outer tube, mortar injection pipe, and mortar injection packing are removed from the perforation, so that the mortar is crimped while sufficiently consolidating the ground in front of the packing, and the mortar is crimped into the perforation. The rock bolt is tightly packed into the hole and is solidly connected to the inner circumferential wall of the hole, so that the lock bolt is securely anchored to the hole.
またこの際穿孔部内に充填されたモルタルの圧力によっ
てモルタル注入用パツキンが外管の基端部側に押圧され
、外管とモルタル注入用パツキン及びモルタル注入管の
引抜が容易に行なわれるものである。In addition, at this time, the mortar injection packing is pressed toward the proximal end of the outer tube by the pressure of the mortar filled in the perforation, and the outer tube, the mortar injection packing, and the mortar injection tube can be easily pulled out. .
このように本発明によれば簡単な施工で、信頼度の高い
ロックボルト工法が提供されるものである。As described above, the present invention provides a rock bolt construction method that is easy to perform and highly reliable.
以下本発明を図示の実施例について説明する。The present invention will be described below with reference to the illustrated embodiments.
１はケーシングパイプを構成する外管でその基端部近傍
外周にはバンドル２が一体に設けられ、先端には掘削刃
部３が設けられている。Reference numeral 1 denotes an outer tube constituting a casing pipe, and a bundle 2 is integrally provided on the outer periphery near the base end of the outer tube, and a digging blade portion 3 is provided at the tip.
４は圧力流体噴射管で前記外管１に貫挿され、同噴射管
４の外周に放射状に突設されたセンターホルダ５を介し
て、前記外管１内にこれと同心状に保持されている。A pressure fluid injection tube 4 is inserted through the outer tube 1 and is held concentrically within the outer tube 1 via a center holder 5 that projects radially from the outer periphery of the injection tube 4. There is.
而して前記圧力流体噴射管４より地山に圧力空気または
圧力水を噴射するとともに、バンドル２を操作して外管
１を左右に揺動させなから地山に貫入せしめ、かくして
地山に穿孔部Ａを掘削する。Then, pressurized air or pressure water is injected into the ground from the pressure fluid injection pipe 4, and the bundle 2 is operated to swing the outer tube 1 from side to side to penetrate the ground, thus penetrating the ground. Drill the hole A.
次いで前記噴射管４を外管１より引抜き、モルタル注入
管６が嵌挿固着されるとともに、ロックボルト７が可摺
動的に嵌挿されたモルタル注入用パツキン８を外管１に
嵌装し、ロックボルド７の先端を地山に貫入せしめるか
、急結剤によって地山に固着せしめ、かくしてロックボ
ルト７先端を地山に碇着したのち、モルタル注入管６よ
り穿孔部Ａ内にモルタルを注入しながら、外管１とモル
タル注入管６及びモルタル注入用パツキン８を穿孔部Ａ
より引抜き、かくして穿孔部Ａにモルタルを填充してロ
ックボルト７を穿孔部Ａに碇止するものである。Next, the injection tube 4 is pulled out from the outer tube 1, the mortar injection tube 6 is fitted and fixed, and the mortar injection packing 8, in which the lock bolt 7 is slidably fitted, is fitted into the outer tube 1. After penetrating the tip of the rock bolt 7 into the ground or fixing it to the ground with a fast-setting agent, and thus anchoring the tip of the rock bolt 7 to the ground, mortar is poured into the perforation A from the mortar injection pipe 6. While pouring, insert the outer tube 1, mortar injection tube 6, and mortar injection packing 8 into the hole A.
The lock bolt 7 is then pulled out, and the hole A is filled with mortar to anchor the lock bolt 7 in the hole A.
この際、モルタルの注入圧がモルタル注入用パツキン８
の前面にかかり、同パツキン８及びモルタル注入管６の
引抜が容易に行なわれるものである。At this time, the mortar injection pressure is
The packing 8 and the mortar injection pipe 6 can be easily pulled out.
以上本発明を実施例について説明したが、本発明は勿論
このような実施例にだけ局限されるものではなく、本発
明の精神を逸脱しない範囲内で種種の設計の改変を施し
うるものである。Although the present invention has been described above with reference to embodiments, the present invention is, of course, not limited to such embodiments, and can be modified in various designs without departing from the spirit of the present invention. .
第１図及び第２図は本発明に係るロックボルト工法の一
実施例の工程を示す縦断側面図、第３図及び第４図は夫
々第１図の■−■線並に第２図のＩＶ−ＩＶ線に沿って
裁断した縦断面図である。
１・・・・・・外管、４・・・・・・圧力流体噴射管、
７・・・・・・ロックボルト、６・・・・・・モルタル
注入管、８・・・・・・モルタル注入用パツキン。1 and 2 are longitudinal sectional side views showing the steps of an embodiment of the rock bolt construction method according to the present invention, and FIGS. 3 and 4 are the lines ■-■ in FIG. 1 and the lines in FIG. It is a longitudinal cross-sectional view cut along the IV-IV line. 1...Outer pipe, 4...Pressure fluid injection pipe,
7...Rock bolt, 6...Mortar injection pipe, 8...Mortar injection packing.
Claims (1)
より圧力流体を噴射しながら前記外管を地山に貫入して
同地山に穿孔部を掘削し、次いで前記噴射管を引抜いた
のち、モルタル注入管が貫挿固定され、且つロックボル
トが相対的に可摺動的に貫通されたモルタル注入用パツ
キンを前記外管に嵌装し、次いで前記ロックボルト先端
を地山に碇着したのち前記モルタル注入管より穿孔部に
モルタルを注入しながら前記外管及びモルタル注入管を
引抜くことを特徴とするロックボルト工法。1. A pressure fluid injection pipe is installed concentrically inside the outer pipe, and while injecting pressure fluid from the injection pipe, the outer pipe is penetrated into the ground to excavate a hole in the ground, and then the injection pipe is inserted into the ground. After pulling it out, a mortar injection packing into which a mortar injection pipe is inserted and fixed and a rock bolt is relatively slidably penetrated is fitted into the outer tube, and then the tip of the rock bolt is inserted into the ground. A rock bolt construction method characterized in that after anchoring, the outer pipe and the mortar injection pipe are pulled out while injecting mortar into the perforation from the mortar injection pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15069179A JPS5937400B2 (en) | 1979-11-22 | 1979-11-22 | Lock bolt construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15069179A JPS5937400B2 (en) | 1979-11-22 | 1979-11-22 | Lock bolt construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5673800A JPS5673800A (en) | 1981-06-18 |
| JPS5937400B2 true JPS5937400B2 (en) | 1984-09-10 |
Family
ID=15502337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15069179A Expired JPS5937400B2 (en) | 1979-11-22 | 1979-11-22 | Lock bolt construction method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5937400B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5334490A (en) * | 1991-11-01 | 1994-08-02 | Eastman Kodak Company | Magenta development inhibitor releasing coupler |
-
1979
- 1979-11-22 JP JP15069179A patent/JPS5937400B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5673800A (en) | 1981-06-18 |
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