JPH01278700A - Lock bolt with stabilizing implement and lock bolt anchoring method - Google Patents
Lock bolt with stabilizing implement and lock bolt anchoring methodInfo
- Publication number
- JPH01278700A JPH01278700A JP10268588A JP10268588A JPH01278700A JP H01278700 A JPH01278700 A JP H01278700A JP 10268588 A JP10268588 A JP 10268588A JP 10268588 A JP10268588 A JP 10268588A JP H01278700 A JPH01278700 A JP H01278700A
- Authority
- JP
- Japan
- Prior art keywords
- lock bolt
- fixing
- hole
- rock bolt
- water
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 15
- 238000004873 anchoring Methods 0.000 title abstract description 4
- 230000000087 stabilizing effect Effects 0.000 title abstract 6
- 239000000463 material Substances 0.000 claims abstract description 29
- 239000004568 cement Substances 0.000 claims abstract description 6
- 239000008267 milk Substances 0.000 claims abstract description 6
- 210000004080 milk Anatomy 0.000 claims abstract description 6
- 235000013336 milk Nutrition 0.000 claims abstract description 6
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 6
- 239000011435 rock Substances 0.000 claims description 22
- 239000000126 substance Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 229920001971 elastomer Polymers 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000005553 drilling Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 230000008961 swelling Effects 0.000 description 3
- 239000007799 cork Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
Landscapes
- Foundations (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明はロックボルトとその定着方法に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a rock bolt and a method for fixing the same.
［従来の技術］
従来ロックボルトをトンネル地山等に定着する際、ロッ
クボルトと削孔された孔との間にセメントミルク、また
はモルタル、その伯の定着材を注入している。[Prior Art] Conventionally, when a rock bolt is fixed in a tunnel or the like, cement milk, mortar, or a similar fixing material is injected between the rock bolt and the drilled hole.
［発明が解決しようとする課題］
しかし、これら定着材が削孔に十分充填されているか否
かの確認が難かしかった。[Problems to be Solved by the Invention] However, it has been difficult to confirm whether or not the fixing material is sufficiently filled into the drilled hole.
また、上向きや、斜め上向きの地盤に定着材を注入する
場合は、これらの定着材が流れ落ら、作業者に降りかか
ったり、作業性や、作業環境が非常に悪かった。Furthermore, when the fixing material is injected into the ground facing upward or diagonally upward, the fixing material may flow down and land on the worker, resulting in very poor workability and work environment.
これらの対策として従来ゴム栓等の使用や特公昭６１−
１５２３９号公報、実公昭６１−１７１１６号公報が提
案されているが、これにも次のような問題点があった。As a countermeasure against these problems, the use of conventional rubber plugs and the
15239 and Utility Model Publication No. 17116/1988 have been proposed, but these also have the following problems.
（ｉ）ゴム栓を使用する場合は、削孔口が荒れているこ
とが多いためゴム栓と削孔口との間に必然的に隙間が生
じてしまい、定着材が洩れてしまうことが多い。(i) When using a rubber plug, the hole opening is often rough, which inevitably creates a gap between the rubber plug and the hole opening, which often causes the fixing material to leak. .
（１１）布袋を使用して孔をふさぐ方法については、現
場で取付ける場合は手間がかるため、予め取付けて搬入
づることが多いが、現場搬入に際し、布袋が破れるおそ
れがあるため、イト袋保護のための搬送機器が必要で必
る。(11) Regarding the method of using a cloth bag to close the hole, it is time-consuming to install it on-site, so it is often installed in advance and transported to the site. Transport equipment is required for this purpose.
（ｉｉｉ）定石ｖＪを注入する場合、布袋に充満されな
いと削孔口か密閉されないが、布袋に充満されるまで時
間がかかるので能率的でない。(iii) When injecting joseki vJ, the hole opening will not be sealed unless the cloth bag is filled, but it is not efficient because it takes time for the cloth bag to be filled.
本発明は上記の諸問題を解決し、取扱いが簡単で、経済
性が良いと同時に、能率良く、確実に定石できるロック
ポル１〜およびロックボルトの定着方法を提供すること
を目的とｌる。It is an object of the present invention to solve the above-mentioned problems and to provide a rock bolt 1 and a rock bolt fixing method that are easy to handle, economical, efficient, and reliable.
［課題を解決するための手段１
上記のような従来技術における問題点は次の本発明に係
るロックボルトとその定着方法によって解決できる。[Means for Solving the Problems 1] The problems in the prior art as described above can be solved by the following lock bolt and its fixing method according to the present invention.
ｍ軸体状のロックボルトに、吸水膨張性物質からなる筒
状の定着具を外嵌したことを特徴とする定着具付きロッ
クボルト。A lock bolt with a fixing device, characterized in that a cylindrical fixing device made of a water-absorbing and expanding material is fitted onto an m-axis body-shaped lock bolt.
（ｉｉ）地盤にあけた孔にロックボルトを定着する際に
、ロックボルトの一端近傍に、吸水膨張性物ｖｌからな
る筒状の定着具を外嵌する工程と、ロックボルトを孔に
装入する工程と、ロックボルトと孔との隙間にセメント
ミルク、モルタル、その伯の物質からなる定着材をロッ
クボルトと定着具の少くとも一方に設けた孔を通して定
着材を注入する工程と、からなることを特徴とするロッ
クポル（〜の定着方法。(ii) When fixing the rock bolt in a hole drilled in the ground, there is a step of externally fitting a cylindrical fixing tool made of water-absorbing and expanding material vl near one end of the rock bolt, and inserting the rock bolt into the hole. and a step of injecting a fixing material made of cement milk, mortar, or similar substances into the gap between the rock bolt and the hole through a hole provided in at least one of the rock bolt and the fixing device. Rockpol (a fixation method of ~) characterized by:
［作 用］
上記構成において、地盤に削孔された穴に、吸水膨張性
物質からなる定着具を外嵌したロックボルトを定着具の
位置を削孔口附近にして装入すると、まだ吸水していな
い定着具は乾いているため自由に削孔口の内壁になじむ
。[Function] In the above configuration, when a rock bolt with a fixing device made of a water-absorbing and swelling material fitted around the hole drilled in the ground is inserted with the fixing device positioned near the hole opening, water will still be absorbed. Since the anchoring tool is dry, it can freely fit into the inner wall of the hole.
その後、定着具に設けられた小孔を通して定着材が流し
込まれる。そうすると、削孔口にロックボルトとの間に
なじんでいる定着具に定着材がしみ込み、急速に膨張し
、削孔「１内壁とロックボルトとの間を一層強固に密封
するので、定着材がこぼれてくることもなく、削孔に充
分定着材が充填されたことも容易に確認できる。Thereafter, the fixing material is poured through the small holes provided in the fixing tool. Then, the fixing material soaks into the fixing tool fitted between the hole opening and the rock bolt, expands rapidly, and seals even more firmly between the inner wall of the drilling hole ``1'' and the rock bolt. There was no spillage, and it was easy to confirm that the hole was filled with the fixing material.
［実施例］
以下に、本発明に係る定着具付きロックボルトおよびロ
ックボルトの定着方法の望ましい実施例について、図面
を参照して説明する。[Embodiments] Hereinafter, preferred embodiments of a lock bolt with a fixing device and a method of fixing a rock bolt according to the present invention will be described with reference to the drawings.
第１図において、（１）はロックボルトを示し、（２）
は該ロックボルトの一端近傍（ここではロックボルト本
体（１）の接部）に外嵌されている定着具を示す。In Figure 1, (1) indicates a lock bolt, and (2)
indicates a fixing tool externally fitted near one end of the lock bolt (here, the contact portion of the lock bolt main body (1)).
定着具（２）は吸水膨張性ゴムや吸水膨張性スポンジの
いわゆる吸水膨張性物質からできており、もっとも望ま
しい材料としては第５図に示すような自由膨潤状態化に
おける重量増加率をもつ、スポンジ状のポリウレタンが
良い。The fixing device (2) is made of a so-called water-swelling material such as water-swelling rubber or water-swelling sponge, and the most desirable material is a sponge that has a weight increase rate in a free swelling state as shown in Figure 5. Polyurethane of the shape is good.
定着具（２）には中央部にロックボルト本体（１）と嵌
合するための孔（２Ｃ）が軸方向に貫通されて設けられ
ている。A hole (2C) for fitting the lock bolt body (1) is provided in the center of the fixing tool (2) so as to pass through the hole (2C) in the axial direction.
又、定着具（２）には定着材を注入するための、あるい
は排気用に用いられるための、小孔（２ａ）、（２ｂ）
が軸方向に貫通されており、デユープ（３）、チューブ
（４）がそれぞれ差し込まれている。The fixing device (2) also has small holes (2a) and (2b) for injecting fixing material or for exhaust.
is penetrated in the axial direction, and a duplex (3) and a tube (4) are inserted respectively.
定着具（２）の外周形状としては、第３図に示すように
、丁度コルクの栓のように削孔方向に向って段々径小と
なるように構成されていることが望ましい。径大部の径
のＤ１０大きさとしては、通常削孔径よりも大きい４０
ｍｍ以上であることが望ましい。As shown in FIG. 3, the outer circumferential shape of the fixing tool (2) is preferably configured so that the diameter becomes gradually smaller in the drilling direction, just like a cork stopper. The D10 size of the large diameter part is 40, which is larger than the normal drilling diameter.
It is desirable that the thickness is not less than mm.
また、径小部Ｄ２の大きさは４０ｍ以上、長さＬは３０
〜７０ｍ、また、排気又は定着材・注入のために設けら
れている小孔（２ａ 、 ２ｂ）の径ｄ１、ｄ２は５ｍ
〜８ｍ程度が望ましい。ロックボルトとの嵌合孔（２Ｃ
）の径はロックボルトの径よりもやや小さめが望ましい
。In addition, the size of the small diameter portion D2 is 40 m or more, and the length L is 30 m.
~70m, and the diameters d1 and d2 of the small holes (2a, 2b) provided for exhaust or injection of fixing material are 5m
~8m is desirable. Fitting hole for lock bolt (2C
) is preferably slightly smaller than the diameter of the lock bolt.
第２図は、その中心部に軸方向に連通している孔（５ａ
）をもつタイプのロックボルト（５）に、定着具（６）
を嵌合した場合の実施例を示す。この場合、ロックボル
ト（５）自身に小孔（５ａ）が設けられているので、定
着具（６）に設ける排気用または定着材注入用の小孔（
６ａ）は１つ設ければ良い。（７）は孔（６ａ）を挿通
するチューブである。Figure 2 shows a hole (5a
) to the lock bolt (5) with a fixing device (6).
An example is shown in which the two are fitted together. In this case, since the small hole (5a) is provided in the lock bolt (5) itself, the small hole (5a) provided in the fixing tool (6) for exhaust or injection of the fixing material (
It is sufficient to provide one item 6a). (7) is a tube inserted through the hole (6a).
第３図、および第４図に本発明によるロックボルト定着
方法の実施例を示す。3 and 4 show an embodiment of the lock bolt fixing method according to the present invention.
第３図は地盤（１０）の削孔（９）が上向きないしは斜
め上向き削孔の場合の定着方法を示し、定着具（２）に
設けられた小孔（２ａ）に差し込まれた長さが短い方の
チューブ（４）よりセメントミルク、又はモルタル等の
定１（８）が注入される。そしてロックボルト（２）の
間に除々に下側から上側に向って定着ｖＪ（８）が充填
され、長さが長い方のチューブ（３）より排気し、チュ
ーブ（３）からの定着材の流出を確認し、注入を完了す
る。Figure 3 shows the fixing method when the hole (9) in the ground (10) is drilled upward or diagonally upward, and the length inserted into the small hole (2a) provided in the fixing tool (2) is A constant (8) such as cement milk or mortar is injected through the shorter tube (4). Then, the fixing vJ (8) is gradually filled between the lock bolts (2) from the bottom to the top, and is evacuated from the longer tube (3), and the fixing material is discharged from the tube (3). Check for spills and complete injection.
第４図は地盤（１０）の削孔（９）が下向き又は斜め下
向きの場合の定着方法を示し、定＠Ｕ（８）は長さが長
い方のチューブ（３）から注入され長さが短い方のチュ
ーブ（４）から排気を行うとともに、チューブ（４）か
らの定着材（８）の流出を確認して定着材（８）が充填
されたことを確認し、注入を完了する。Figure 4 shows the fixing method when the hole (9) in the ground (10) is directed downward or diagonally downward. The shorter tube (4) is evacuated, and the flow of the fixing material (8) from the tube (4) is confirmed to confirm that the fixing material (8) is filled, and the injection is completed.
なお、このいずれの場合でも、セメントミルク、モルタ
ル等の定着＋Ａ（８）が充填されるとその水分が吸水膨
張性物質からなる定着具（２，６）に吸収されて瞬時に
膨張し、多少孔径に荒さがおっても確実にロックボルト
（１，５）と削孔穴（９）とのづきまを完全に密封する
ことができる。なお、第５図は瞬時膨張を小量増速度で
示している。In any of these cases, when the fixer +A (8) such as cement milk or mortar is filled, its moisture is absorbed by the fixer (2, 6) made of a water-absorbing and swelling substance, causing it to expand instantly. Even if the hole diameter is rough, the gap between the lock bolt (1, 5) and the drilled hole (9) can be completely sealed. Note that FIG. 5 shows instantaneous expansion with a small amount of speed increase.
なお、ロックボルト（１，５）に定着具（２，６）を嵌
合するのは、現場で定着施工時に行ってもよく、また、
予め施工現場に運搬する前に嵌合させておいてもよい。Note that fitting the fixing tool (2, 6) to the lock bolt (1, 5) may be done at the site during fixing construction, or
They may be fitted in advance before being transported to the construction site.
［発明の効果］
本発明の定着具付きロックボルトおよびロックボルトの
定着方法によるときは次の効果が得られる。[Effects of the Invention] The following effects can be obtained by using the lock bolt with a fixing device and the method for fixing the rock bolt of the present invention.
ｍ定着具が瞬時に吸水膨張するので、効率良く定着作業
ができる。The fixing tool instantly absorbs water and expands, allowing for efficient fixing work.
（ｉｉ）削孔口が荒れていても確実に密閉できる。(ii) Even if the hole opening is rough, it can be reliably sealed.
（ｉｉｉ）チューブを通して定着材が出てくるので隙間
に定着材が充填したかどうかの確認が容易で必る。(iii) Since the fixing material comes out through the tube, it is easy to check whether the gap is filled with the fixing material.
（ＩＶ）運搬の際に特別に注意を払う必要がない。(IV) There is no need to take special precautions during transportation.
（Ｖ）経済性の良いロックボルトを提供できる。(V) An economical rock bolt can be provided.
第１図は本発明に係る定着具付ぎロックボルトの全体断
面図、
第２図は本発明に係る別の実施例の全体断面図、第３図
は本発明に係る上向き定着方法の施工状態図、
第４図は本発明に係る下向き定着方法の施工状態、
第５図は、定着具の、水浸漬時間−単量増加特性図、
で必る。
１．５・・・・・・ロックポル１〜
２．６・・・・・・定着具
３．４．７・・・チューブ
８・・・・・・・・・・・・定着相FIG. 1 is an overall cross-sectional view of a lock bolt with a fixing device according to the present invention, FIG. 2 is an overall cross-sectional view of another embodiment according to the present invention, and FIG. 3 is a construction state of the upward fixing method according to the present invention. 4 is a construction state of the downward fixing method according to the present invention, and FIG. 5 is a water immersion time vs. unit amount increase characteristic diagram of the fixing tool. 1.5...Rockpol 1~2.6...Fixing tool 3.4.7...Tube 8...Fixing phase
Claims (1)
筒状の定着具を外嵌したことを特徴とする定着具付きロ
ックボルト。 ２、地盤にあけた孔にロックボルトを定着する際に、ロ
ックボルトの一端近傍に、吸水膨張性物質からなる筒状
の定着具を外嵌する工程と、ロックボルトを孔に装入す
るとともに定着具で孔を塞ぐ工程と、ロックボルトと孔
との隙間にロックボルトと定着具の少くとも一方に設け
た孔を通してセメントミルク、モルタル、その他の物質
からなる定着材を注入する工程と、からなることを特徴
とするロックボルトの定着方法。[Scope of Claims] 1. A rock bolt with a fixing device, characterized in that a cylindrical fixing device made of a water-absorbing and expanding material is fitted onto a shaft-like rock bolt. 2. When fixing a rock bolt in a hole drilled in the ground, there is a process of fitting a cylindrical fixing tool made of water-absorbing and expanding material near one end of the rock bolt, and inserting the rock bolt into the hole. a step of plugging the hole with a fixing device; and a step of injecting a fixing material made of cement milk, mortar, or other substance into the gap between the rock bolt and the hole through a hole provided in at least one of the lock bolt and the fixing device. A lock bolt fixing method characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10268588A JPH01278700A (en) | 1988-04-27 | 1988-04-27 | Lock bolt with stabilizing implement and lock bolt anchoring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10268588A JPH01278700A (en) | 1988-04-27 | 1988-04-27 | Lock bolt with stabilizing implement and lock bolt anchoring method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01278700A true JPH01278700A (en) | 1989-11-09 |
Family
ID=14334094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10268588A Pending JPH01278700A (en) | 1988-04-27 | 1988-04-27 | Lock bolt with stabilizing implement and lock bolt anchoring method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01278700A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100855036B1 (en) * | 2006-10-25 | 2008-08-29 | 주식회사 일건건축사사무소 | A grout |
| KR101141526B1 (en) * | 2009-06-26 | 2012-05-03 | 지앤에스건설 주식회사 | Pressure Grouting Method |
| JP2014163154A (en) * | 2013-02-26 | 2014-09-08 | Shimizu Corp | Structure and construction method of anchorage part of anchor bolt |
-
1988
- 1988-04-27 JP JP10268588A patent/JPH01278700A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100855036B1 (en) * | 2006-10-25 | 2008-08-29 | 주식회사 일건건축사사무소 | A grout |
| KR101141526B1 (en) * | 2009-06-26 | 2012-05-03 | 지앤에스건설 주식회사 | Pressure Grouting Method |
| JP2014163154A (en) * | 2013-02-26 | 2014-09-08 | Shimizu Corp | Structure and construction method of anchorage part of anchor bolt |
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