JP2000273855A - Insertion installation method for tubular body, and tubular body used therefor - Google Patents
Insertion installation method for tubular body, and tubular body used thereforInfo
- Publication number
- JP2000273855A JP2000273855A JP11079075A JP7907599A JP2000273855A JP 2000273855 A JP2000273855 A JP 2000273855A JP 11079075 A JP11079075 A JP 11079075A JP 7907599 A JP7907599 A JP 7907599A JP 2000273855 A JP2000273855 A JP 2000273855A
- Authority
- JP
- Japan
- Prior art keywords
- hole
- pipe
- distal end
- drilling
- tube
- 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
- Earth Drilling (AREA)
- Piles And Underground Anchors (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、法面地山や法面地
山を覆工した覆工法面などを含む挿入対象部位に対する
管体の挿入設置方法およびこれに用いる管体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for inserting and installing a pipe into a site to be inserted including a sloped ground or a lining slope where the sloped ground is covered, and a pipe used therefor.
【０００２】[0002]
【従来の技術】例えば、地盤を切取りまたは盛土によつ
てできた人工的な法面が風雨などによつて崩壊すること
を防ぐために、ブロックを並設したり、モルタルを吹き
付けたりして法面覆工を行うとともに、その覆工物を貫
通する排水管を設けることがある。この場合、削孔ドリ
ルにより覆工物を貫通して背面地山内まで延在する挿入
孔を設け、その削孔ドリルを挿入孔内から引き抜いた後
に、その挿入孔内に排水管を挿入していた。2. Description of the Related Art For example, blocks are juxtaposed or mortar is sprayed on a slope to prevent an artificial slope formed by cutting the ground or embankment from collapsing due to wind and rain. In some cases, lining is performed, and a drain pipe that penetrates the lining is provided. In this case, an insertion hole penetrating through the lining with a drilling drill and extending to the inside of the rear ground is provided, and after the drilling drill is pulled out from the insertion hole, a drain pipe is inserted into the insertion hole. Was.
【０００３】他方、近年では、法面等の既設覆工物の補
修方法が提案され実用に供されている。既設覆工物の補
修方法は、例えば本出願人らによる先の特公平５−２２
７７５号に示されるように、既設覆工物を破壊すること
なく覆工物と背面地山との間の空洞等を計測し、次いで
削孔ドリルにより既設覆工物を貫通させて地山内までア
ンカー孔を削孔した後に、削孔ドリルを引き抜き、続い
てこのアンカー孔にアンカー材を挿入し、このアンカー
材内を通じて、覆工物と背面地山との間の空洞等に硬化
材を充填し、しかる後に既設覆工物表面を新たに覆工す
るものである。この場合、使用するアンカー材は管体で
あり、前述の配水管と同様に削孔ドリルで前もって削孔
形成した挿入孔に挿入していた。On the other hand, in recent years, a method of repairing an existing lining such as a slope has been proposed and put to practical use. The repair method of the existing lining is described in, for example, Japanese Patent Publication No. 5-22 by the present applicant.
As shown in No. 775, without destroying the existing lining, measure the cavity etc. between the lining and the back ground, and then penetrate the existing lining with a drill to reach the ground. After drilling the anchor hole, pull out the drill hole, then insert the anchor material into this anchor hole, fill the cavity etc. between the lining and the back ground through this anchor material with the hardening material Thereafter, the surface of the existing lining is newly lining. In this case, the anchor material to be used was a pipe, which was inserted into an insertion hole previously drilled by a drill as in the case of the above-mentioned water distribution pipe.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、これら
の従来例では、削孔ドリルにより挿入孔を削孔した後
に、削孔ドリルを引き抜き、続いてその挿入孔に管体を
挿入していたため、削孔と管体挿入とが二度手間となっ
ていた。However, in these prior arts, after drilling an insertion hole with a drill, the drill is pulled out and then a tube is inserted into the insertion hole. The hole and the insertion of the tube were troublesome twice.
【０００５】また一般に、既設覆工物の背面地山等は雨
水の浸透等により風化し脆弱化していることが多いた
め、削孔した管体挿入孔が崩壊し易く、管体を円滑に挿
入できないこともあった。In general, the ground behind the existing lining is often weathered and weakened due to rainwater infiltration or the like, so that the drilled tube insertion hole is easily broken and the tube is inserted smoothly. There were things I couldn't do.
【０００６】そこで、本発明の主たる課題は、管体の挿
入を容易かつ円滑に行うことができるようにし、もって
作業能率の向上を図ることにある。[0006] Therefore, a main object of the present invention is to make it possible to easily and smoothly insert a tube, thereby improving work efficiency.
【０００７】[0007]
【課題を解決するための手段】上記課題を解決した本発
明の管体の挿入設置方法は、管体をその基端部を残して
挿入対象物へ挿入して設置する方法であって、先端ビッ
トを備えるとともに、前記挿入対象部位へ挿入しない基
端部を除く周壁部分に貫通孔を形成してなる管体を用い
て前記挿入対象部位を削孔し、この削孔によって前記管
体を少なくともその前記貫通孔形成部分まで前記挿入対
象部位へ挿入し設置することを特徴とするものである。According to the present invention, there is provided a method of inserting and installing a tube body, which comprises inserting a tube body into an object to be inserted while leaving a base end thereof, and comprising: With a bit, the insertion target site is drilled using a pipe having a through hole formed in a peripheral wall portion excluding a base end portion that is not inserted into the insertion target site, and at least the pipe body is cut by the drilling. It is characterized in that it is inserted into the insertion target portion up to the through hole forming portion and installed.
【０００８】この場合において、前記貫通孔は、前記先
端ビットを含む管体先端部と、この先端部および前記挿
入対象部位へ挿入しない基端部を除く基端側周壁部分と
にそれぞれ形成されており、前記削孔に際し、削孔エア
を、前記管体内を通して前記管体先端部の貫通孔のみか
ら吹出させつつ削孔を行うのは好ましい。In this case, the through holes are formed in the distal end portion of the tubular body including the distal end bit and the proximal end side peripheral wall portion excluding the distal end portion and the proximal end not inserted into the insertion target portion. In the drilling, it is preferable that the drilling is performed while blowing the drilling air through only the through hole at the distal end of the tubular body through the tubular body.
【０００９】より具体的には、前記貫通孔は、前記先端
ビットを含む管体先端部と、この先端部および前記挿入
対象部位へ挿入しない基端部を除く基端側周壁部分とに
それぞれ形成されており、前記削孔に際し、前記管体内
にエア供給用内管を挿入し、かつこのエア供給用内管を
前記管体先端部の貫通孔にのみ連通させた状態で、削孔
エアを、このエア供給用内管を通して前記管体先端部の
貫通孔のみから吹出させつつ削孔を行う、ことを提案す
る。More specifically, the through holes are respectively formed in the distal end portion of the tubular body including the distal end bit and the proximal end side peripheral wall portion excluding the distal end portion and the proximal end portion that is not inserted into the insertion target site. In the drilling, an air supply inner pipe is inserted into the pipe, and the air supply inner pipe is communicated only with the through-hole at the distal end of the pipe body. It is proposed that the drilling be performed while blowing out only the through hole at the distal end portion of the tubular body through the inner pipe for air supply.
【００１０】また、前記管体の挿入後、硬化材を、前記
管体内を通して前記先端部の貫通孔および基端側周壁部
分の貫通孔の少なくとも一方から吐出させて、少なくと
も吐出硬化材を前記管体外面とその挿入孔壁との隙間に
注入充填して、前記管体を前記挿入対象部位に対して定
着させ、しかる後に、前記注入した硬化材が硬化する前
に、圧気を、前記管体内を通して前記基端側周壁部分の
貫通口のみから吹出させることができる。After the tube is inserted, the hardening material is discharged through at least one of the through-hole at the distal end portion and the through-hole at the base side peripheral wall portion through the tube, and at least the hardened material is discharged from the tube. The gap between the outer surface of the body and the wall of the insertion hole is injected and filled, and the tube is fixed to the insertion target site. Thereafter, before the injected hardening material is hardened, air is blown into the tube. And can be blown out only from the through-hole of the base end side peripheral wall portion.
【００１１】他方、これら管体挿入方法に用いる本発明
の管体は、基端部を残して挿入対象部位へ挿入して設置
される管体であって、先端ビットを備えるとともに、挿
入対象部位へ挿入しない基端部を除く周壁部分に貫通孔
を形成してなることを特徴とするものである。On the other hand, the tubular body of the present invention used in these tubular body inserting methods is a tubular body to be inserted into a portion to be inserted except for a base end portion and provided with a tip bit, A through-hole is formed in a peripheral wall portion excluding a base end portion that is not inserted into the through hole.
【００１２】この場合において、前記貫通孔は、前記先
端ビットを含む管体先端部と、この先端部および前記挿
入対象部位へ挿入しない基端部を除く基端側周壁部分と
にそれぞれ形成されており、前記管体内を通して前記管
体先端部の貫通孔のみから削孔エアを吹出させる、削孔
エア供給手段を備えた管体とするのは好ましい。より具
体的には、削孔エア供給手段は、前記管体内に挿入され
た、前記管体先端部の貫通孔にのみ連通するエア供給用
内管で構成することができる。In this case, the through holes are formed in the distal end portion of the tubular body including the distal end bit and the proximal end side peripheral wall portion excluding the distal end portion and the proximal end not inserted into the insertion target portion. Preferably, the pipe is provided with drilling air supply means for blowing drilling air only from the through hole at the distal end of the pipe through the pipe. More specifically, the drilling air supply means can be constituted by an air supply inner pipe inserted into the pipe and communicating only with a through hole at the distal end of the pipe.
【００１３】＜作用＞本発明の主たるポイントは、管体
を自身先端の削孔ビットにより削孔しつつ背面地山内ま
で挿入する点にある。すなわち、本発明は、管体挿入と
その挿入孔の削孔とを同時に行う、自削孔挿入を特徴事
項とするものである。したがって、本発明では、管体挿
入に先立って予め管体挿入のための孔を削孔しなくとも
良く、その分手間数を減らすことができる。また後述す
るように管体の自削孔挿入に先立って予め挿入孔を削孔
する場合であっても、その下孔に沿って管体を自削孔挿
入することで、下孔の一部崩壊等に関係無く、管体を円
滑に挿入できる利点がある。<Operation> The main point of the present invention is that the pipe is drilled by the drill bit at the tip of the pipe itself and inserted into the back ground. That is, the present invention is characterized by self-cutting hole insertion in which the insertion of the tube and the cutting of the insertion hole are performed simultaneously. Therefore, according to the present invention, it is not necessary to drill a hole for inserting the tube in advance before inserting the tube, and the number of labors can be reduced by that amount. Also, as described later, even when the insertion hole is pre-drilled prior to the insertion of the self-drilling hole of the tube, by inserting the self-cutting hole along the prepared hole, a part of the prepared hole is formed. There is an advantage that the pipe can be inserted smoothly regardless of collapse or the like.
【００１４】[0014]
【発明の実施の形態】＜第１の実施形態＞先ず、本発明
の第１の実施形態について、前述した特公平５−２２７
７５号に示される補修工法への適用例を引いて詳説す
る。 （空洞部等の検出）既設覆工物の補修工法においては初
めに、既設覆工物背面のどの箇所に空洞が生じているか
を正確に特定する必要がある。空洞を特定する公知の手
段としては、例えば、超音波の反射波を利用して検出す
る方法、空洞と他の箇所との熱放射の違いを熱赤外線カ
メラで検出して特定する方法、ハンマーで覆工物を叩
き、その際の音を聞き分けて経験によって検出する方法
等がある。これらはいずれも公知の方法であるので、こ
こでは敢えて説明を略す。空洞の位置が特定されたなら
ば、その部位に以下に述べるように新規にアンカーを設
ける。DESCRIPTION OF THE PREFERRED EMBODIMENTS <First Embodiment> First, a first embodiment of the present invention will be described with reference to Japanese Patent Publication No. 5-227.
An example of application to the repair method shown in No. 75 will be described in detail. (Detection of Cavity, etc.) In the repairing method of an existing lining, it is first necessary to accurately identify where on the back of the existing lining a cavity is formed. As a known means for specifying the cavity, for example, a method of detecting using a reflected wave of ultrasonic waves, a method of detecting and specifying the difference in heat radiation between the cavity and other parts by using a thermal infrared camera, a method using a hammer There is a method of hitting a lining, hearing the sound at that time, and detecting it by experience. Since these are all known methods, the explanation is omitted here. Once the location of the cavity has been identified, a new anchor is provided at that location as described below.
【００１５】（管状アンカー材（本発明にいう管体に相
当する）の削孔挿入工程）本発明では、例えば図１に示
すような、先端ビット１Ｂを備えるとともに、この先端
ビット１Ｂの先端面と頭部１Ｈを除く基端側部分とに、
内外に連通する先端吐出口ＰＨ，…および基端側吐出口
ＢＨ１〜ＢＨ３をそれぞれ形成した管状アンカー材（以
下、単にアンカー材ともいう。）１を新規アンカーとし
て用いる。これら吐出口が本発明にいう貫通孔に相当す
る。頭部１Ｈは非挿入部分であり、アンカー材１の挿入
深さ等に応じて適宜長さを定める。また、図示例では、
基端側吐出口ＢＨ１〜ＢＨ３を長手方向に間隔を空けて
複数設けており、これらのうちいずれかが次述の挿入後
において、既設覆工物背面と地山表面との間の空洞部と
略同じ深さ方向位置にくるようになっている。(Step of Inserting a Hole in a Tubular Anchor Material (corresponding to a Tube in the Present Invention)) In the present invention, a tip bit 1B as shown in FIG. 1 is provided, and the tip face of the tip bit 1B is provided. And the base end except for the head 1H,
A tubular anchor material (hereinafter, also simply referred to as an anchor material) 1 in which a distal discharge port PH,... Communicating with the inside and outside, and a proximal discharge port BH1 to BH3 are formed is used as a new anchor. These discharge ports correspond to the through holes according to the present invention. The head 1H is a non-insertion portion, and its length is appropriately determined according to the insertion depth of the anchor member 1 and the like. In the illustrated example,
A plurality of base end side discharge ports BH1 to BH3 are provided at intervals in the longitudinal direction, and any one of them is provided with a hollow portion between the back surface of the existing lining and the ground surface after the insertion described below. They are located at approximately the same depth position.
【００１６】そして図３に示すように、かかる管状アン
カー材１により既設覆工物Ｃ１を貫通してその背面の地
山ＢＧ内まで削孔し、この削孔によって管状アンカー材
１をその頭部１Ｈを残して地山ＢＧ内まで挿入する。図
示例では圧気を先端ビット１Ｂの先端吐出口から吹出し
て、この吹出しエアに乗せて削孔屑をアンカー材１外面
とアンカー孔壁ＡＨ１との隙間Ｓ１から既設覆工物Ｃ１
表面側へ排出させる、いわゆるエア削孔を採用してい
る。２は削岩機を示している。As shown in FIG. 3, the tubular anchor 1 penetrates through the existing lining C1 and drills a hole in the ground BG on the back surface thereof. Insert into the ground BG leaving 1H. In the illustrated example, compressed air is blown out from the discharge end of the tip bit 1B, and the drilled air is put on the blown air to remove drilling dust from the gap S1 between the outer surface of the anchor material 1 and the anchor hole wall AH1.
The so-called air drilling that discharges to the surface side is adopted. 2 indicates a rock drill.
【００１７】かかるエア削孔を行う場合、基端側吐出口
ＢＨ１〜ＢＨ３からも削孔エアを吹出させてしまうと、
その吹出しエアが削孔屑の排出を妨げるように作用し、
削孔屑の排出が円滑に行われない。そこで、図１および
図２に示すように、管状アンカー材１内にエア供給用内
管３を挿入し、かつこのエア供給用内管３を先端吐出孔
ＰＨ，…にのみ連通させた状態として、削孔エアを、こ
のエア供給用内管３の内部流路３Ｆを通して先端吐出口
ＰＨ，…のみから吹出させつつ削孔を行うのが好まし
い。この例ではエア供給用内管３の先端面３ａを、先端
ビット１Ｂ背面の先端吐出口への入口面１ｂに突き合わ
せ状態で直接接続しているが、図４に示すように、エア
供給用内管３０の先端出口３３０ａを、最先端側の基端
側吐出口ＢＨ１と先端吐出口の入口１ｂとの間のアンカ
ー材１内に臨ませ、エア供給用内管３０の内部流路３０
Ｆと先端吐出口の入口１ｂとをアンカー材内流路１Ｆの
一部分を介して間接的に接続することもできる。この場
合、エア供給用内管３０の少なくとも先端部外周面をア
ンカー材内周面に密着させる（図示例では、エア供給用
内管３０の先端部外周面にシールリングＲを巻付けて密
着シールしている）。In performing such air drilling, if drilling air is also blown out from the base end side discharge ports BH1 to BH3,
The blowing air acts to prevent the discharge of drilling debris,
Discharge of drilling debris is not performed smoothly. Therefore, as shown in FIGS. 1 and 2, the air supply inner pipe 3 is inserted into the tubular anchor member 1 and the air supply inner pipe 3 is communicated only with the tip end discharge holes PH,. It is preferable that the drilling is performed while the drilling air is blown out only from the tip discharge ports PH,... Through the internal flow path 3F of the inner pipe 3 for supplying air. In this example, the distal end surface 3a of the air supply inner pipe 3 is directly connected to the inlet surface 1b to the distal end discharge port on the back surface of the distal end bit 1B, but as shown in FIG. The distal end outlet 330a of the pipe 30 faces the anchor material 1 between the base end side discharge port BH1 on the foremost side and the inlet 1b of the distal end discharge port, and the internal flow path 30 of the air supply inner pipe 30
F and the inlet 1b of the tip discharge port can be indirectly connected via a part of the flow path 1F in the anchor material. In this case, at least the outer peripheral surface of the distal end portion of the air supply inner tube 30 is brought into close contact with the inner peripheral surface of the anchor material (in the illustrated example, the seal ring R is wound around the outer peripheral surface of the distal end portion of the air supply inner tube 30 to form a tight seal. are doing).
【００１８】また、図１および図２示す例のエア供給内
管３の基端部には、アンカー材１と削岩機２とを接続す
る接続部４が取付けられている。この接続部４は先端側
にナット部４ａを有し、アンカー材１の基端部周面に形
成されたネジ部１Ｎの外側に螺合するようなっている。
この接続前の状態が図１に、接続後の状態が図２に示さ
れている。A connecting portion 4 for connecting the anchor material 1 and the rock drill 2 is attached to the base end of the air supply inner pipe 3 in the example shown in FIGS. The connection portion 4 has a nut portion 4a on the distal end side, and is screwed to the outside of a thread portion 1N formed on the peripheral surface of the base end portion of the anchor material 1.
The state before the connection is shown in FIG. 1, and the state after the connection is shown in FIG.
【００１９】削孔挿入が完了したならば、図５に示すよ
うにアンカー材１を引き抜かずに残して、その挿入した
状態のアンカー材１から削岩機２および接続部４を含む
エア供給用内管３を取り外す（図５には取り外した状態
を示している）。When the drilling is completed, as shown in FIG. 5, the anchor 1 is left without being pulled out, and the rock drill 2 and the air supply including the connecting portion 4 are removed from the anchor 1 in the inserted state. The inner tube 3 is removed (FIG. 5 shows a state where the inner tube 3 is removed).
【００２０】（第１の注入工程）次に図６に示すよう
に、この削孔挿入した管状アンカー材１を引き抜かず
に、硬化材Ｇ１を、その管状アンカー材１内および先端
側部分の吐出口ＰＨ，…を通して吐出させる。この吐出
硬化材Ｇ１は、管状アンカー材１とアンカー孔ＡＨとの
隙間Ｓ１における少なくとも先端側部分に対して注入充
填する。さらに通常の場合には、図中Ｇ１１として示す
ように注入硬化材は隙間周囲の背面地山ＢＧ内にも浸透
する。(First Injection Step) Next, as shown in FIG. 6, the hardened material G1 is discharged into the tubular anchor material 1 and the distal end portion thereof without pulling out the drilled and inserted tubular anchor material 1. Discharge through outlets PH, ... The discharge hardening material G1 is injected and filled into at least the front end portion in the gap S1 between the tubular anchor material 1 and the anchor hole AH. Further, in a normal case, the injection hardening material also penetrates into the back ground BG around the gap as shown by G11 in the drawing.
【００２１】ここで、好適には図７〜９に示す第１のパ
ッカー装置５または図１０に示す第２のパッカー装置５
０を用いて注入を行う。先ず両パッカー装置５，５０の
共通点について説明すると、それらはいずれも次のよう
な構成を有するものである。すなわち、相対的に大径の
拡径部６ａを先端側部分に有する内管６と、拡径部６ａ
より後方の内管部分を隙間をもって取り囲み、且つ内管
６に対してその長手方向に沿って前後スライド自在とさ
れた外管７と、この外管７の先端面と内管拡径部６ａの
後端面との間の内管部分を取り囲む筒状の可撓性パッカ
ー部材５Ｐとを含む、注入管部８を備えるとともに、内
管６を外管７に対して前後スライド移動させるワンタッ
チ操作手段９を備えたものである。Here, preferably, the first packer device 5 shown in FIGS. 7 to 9 or the second packer device 5 shown in FIG.
Inject using 0. First, the common features of the two packer devices 5 and 50 will be described. Both of them have the following configuration. That is, the inner pipe 6 having a relatively large-diameter enlarged portion 6a at the distal end portion, and the enlarged portion 6a
An outer tube 7 surrounding the inner tube portion further rearward with a gap and being slidable back and forth with respect to the inner tube 6 along the longitudinal direction thereof, and a distal end face of the outer tube 7 and an inner tube enlarged portion 6a. A one-touch operation means 9 including an injection pipe portion 8 including a tubular flexible packer member 5P surrounding the inner pipe portion between the rear pipe and the inner pipe 6 with respect to the outer pipe 7; It is provided with.
【００２２】このワンタッチ操作手段９は、より詳細に
は、外管７に対して取付けられた軸部材周りに揺動する
ハンドル９Ｈと、このハンドル９Ｈの揺動に応じて内管
６を外管７に対して前後スライド移動させるリンク機構
部９Ｒとからなり、ハンドル９Ｈの揺動によりリンク機
構部９Ｒを介して内管６を外管７に対して後へスライド
移動させることによって、内管６の拡径部６ａの後端面
と外管７の先端面との間で可撓性パッカー部材５Ｐを挟
み圧縮して側方に膨張させ張出させることができるよう
に構成したものである。More specifically, the one-touch operation means 9 comprises a handle 9H swinging around a shaft member attached to the outer tube 7 and an inner tube 6 in response to the swing of the handle 9H. And a link mechanism 9R that slides back and forth with respect to the inner tube 6. The inner tube 6 is slid rearward with respect to the outer tube 7 via the link mechanism 9R by swinging of the handle 9H. The flexible packer member 5P is sandwiched between the rear end surface of the enlarged diameter portion 6a and the front end surface of the outer tube 7 so that the flexible packer member 5P can be expanded and laterally expanded.
【００２３】かくして、このワンタッチ操作手段９によ
り、図８に示すように内管６を外管７に対して後へスラ
イド移動させることによって、内管拡径部６ａと外管７
先端面との間で可撓性パッカー部材５Ｐを挟み圧縮して
側方に膨張させ張出させることができる。Thus, as shown in FIG. 8, the one-touch operation means 9 causes the inner pipe 6 to slide backward with respect to the outer pipe 7 so that the inner pipe enlarged portion 6a and the outer pipe 7 are moved.
The flexible packer member 5 </ b> P can be sandwiched and compressed between the distal end surface and the flexible packer member 5 </ b> P so that the flexible packer member 5 </ b> P expands laterally and protrudes.
【００２４】このように、両パッカー装置５，５０はパ
ッカー部材５Ｐの張出し機構において異なるところはな
く（相違する構造については後述する。）、双方ともに
ワンタッチでパッカー部材５Ｐを張出させることができ
るものであるので、ナットを締めつけていくことでパッ
カーを張出させる公知のタイプの装置と比べて各段に迅
速かつ容易にパッカー張出しを行うことができる利点を
有する。しかし、本発明ではもちろん従来のナット締め
タイプのもの（前掲特公平５−２２７７５号の第５図参
照）を用いることもできる。As described above, there is no difference between the two packer devices 5 and 50 in the extension mechanism of the packer member 5P (a different structure will be described later), and both can extend the packer member 5P with one touch. Therefore, there is an advantage that the packer can be quickly and easily extended to each stage as compared with a known type device in which the packer is extended by tightening the nut. However, in the present invention, a conventional nut-tightening type (see FIG. 5 of Japanese Patent Publication No. 5-22775) can be used.
【００２５】注入に際しては、先ず、可撓性パッカー部
材５Ｐが側方に張出していない状態で、パッカー装置５
の注入管部８をアンカー材１内に挿入する。この際、パ
ッカー５Ｐの張出状態を示す図９から理解できるよう
に、注入管部８のパッカー部材５Ｐが少なくともアンカ
ー材１の最先端側の基端側吐出口ＢＨ１を塞ぎうる位
置、すなわち好ましくは最先端側の基端側吐出口ＢＨ１
よりも先端側に位置させる。しかる後、図９に示すよう
に、ワンタッチ操作手段によりパッカー部材５Ｐを側方
に張出させ、その張出したパッカー部材５Ｐによりアン
カー材１の内面と注入管部８の外面との隙間Ｓ２を塞い
だ状態とする。その上で、この閉塞状態を保持しつつ、
硬化材Ｇ１をパッカー装置５の内管６内を通してアンカ
ー材１内へ供給する。硬化材Ｇ１はアンカー材１内を通
り、先端吐出口ＰＨ，…のみから吐出される。At the time of injection, first, the packer device 5P is in a state where the flexible packer member 5P is not protruding to the side.
Is inserted into the anchor material 1. At this time, as can be understood from FIG. 9 showing the overhanging state of the packer 5P, a position where the packer member 5P of the injection pipe portion 8 can close at least the base end side discharge port BH1 on the most distal side of the anchor material 1, that is, preferably Is the base end discharge port BH1 on the forefront side
More distally. Thereafter, as shown in FIG. 9, the packer member 5P is extended laterally by the one-touch operation means, and the extended packer member 5P closes the gap S2 between the inner surface of the anchor member 1 and the outer surface of the injection pipe portion 8. State. Then, while maintaining this closed state,
The hardening material G1 is supplied into the anchor material 1 through the inner tube 6 of the packer device 5. The hardening material G1 passes through the anchor material 1 and is discharged only from the distal end discharge ports PH,.
【００２６】かくして、硬化材Ｇ１を、アンカー材１内
を介して先端吐出口ＰＨ，…のみから吐出させ、アンカ
ー材１外面とアンカー孔内面ＡＨ１との隙間Ｓ１に対し
て注入充填することができる。Thus, the hardening material G1 can be discharged from only the distal end discharge ports PH,... Through the inside of the anchor material 1, and injected and filled into the gap S1 between the outer surface of the anchor material 1 and the inner surface AH1 of the anchor hole. .
【００２７】ところで、かかるアンカー材先端部のみの
硬化材注入において、注入量が多すぎるもしくは注入ス
ピードが速すぎることなどが原因で、注入した硬化材が
アンカー材１の基端側吐出口ＢＨ１〜ＢＨ３を閉塞して
しまうことがある。これでは、後述する第２の注入工程
において円滑な硬化材注入ができなくなったり、あるい
は注入不能となったりすることが想定される。これに対
して、前述第１のパッカー装置５を用いると、この閉塞
を防止することができる。By the way, in the injection of the hardening material only at the distal end portion of the anchor material, the injected hardening material may be excessively high or the injection speed may be too high. BH3 may be blocked. In this case, it is supposed that smooth injection of the hardening material becomes impossible or impossible in the second injection step described later. On the other hand, if the first packer device 5 is used, this blockage can be prevented.
【００２８】すなわち図９に詳細に示すように、第１の
パッカー装置５では、第２のパッカー装置と異なり、外
管７の先端側に圧気吹出口７ａ，７ａを形成するととも
に、この圧気吹出口に対して内管６外面と外管７内面と
の隙間Ｓ３を介して連通する圧気供給口９ａをワンタッ
チ操作手段９に設けており、少なくとも前述第１の注入
工程以降であって且つその注入硬化材の硬化前に、好適
には第１の注入直後に、圧気を圧気供給口９ａおよび隙
間Ｓ３を通して圧気吹出口７ａ，７ａから外管７外面と
アンカー材１内面との隙間Ｓ４に吹出させ、この吹出圧
気を、更にアンカー材１の基端側吐出口ＢＨ１〜ＢＨ３
から吹出させて、それら基端側吐出口ＢＨ１〜ＢＨ３な
らびにこれに連通する隙間Ｓ４，Ｓ３等を塞いでいる未
硬化の硬化材を吹き飛ばすことができる。かくして、第
１の注入による硬化材Ｇ１によりアンカー材１の基端側
吐出口ＢＨ１〜ＢＨ３への連通路が塞がってしまうのを
防止できる。なお、図６の工程図にはこの第１のパッカ
ー装置５が示されている。注入後、パッカー装置５はア
ンカー材から引き抜かれる。That is, as shown in detail in FIG. 9, in the first packer device 5, unlike the second packer device, compressed air outlets 7a, 7a are formed at the distal end side of the outer tube 7, and the compressed air A pressurized air supply port 9a communicating with the outlet through a gap S3 between the outer surface of the inner tube 6 and the inner surface of the outer tube 7 is provided in the one-touch operation means 9, and is provided at least after the first injection step and the injection thereof. Prior to the hardening of the hardening material, preferably immediately after the first injection, the compressed air is blown from the compressed air outlets 7a, 7a through the compressed air supply port 9a and the gap S3 into the gap S4 between the outer surface of the outer tube 7 and the inner surface of the anchor material 1. The blow-out air is further discharged to the base-side discharge ports BH1 to BH3 of the anchor material 1.
To blow out the uncured hardening material that closes the base end side discharge ports BH1 to BH3 and the gaps S4, S3, etc. communicating therewith. Thus, it is possible to prevent the hardening material G1 from the first injection from blocking the communication path to the base-side discharge ports BH1 to BH3 of the anchor material 1. The first packing device 5 is shown in the process diagram of FIG. After injection, the packer device 5 is withdrawn from the anchor material.
【００２９】（硬化待ち）一方、前述の第１の注入工程
で注入した硬化材Ｇ１の硬化により、管状アンカー材１
の先端側部分が地山に対して固定されるのを待つ。(Curing wait) On the other hand, the curing of the hardening material G1 injected in the first injection step described above causes the tubular anchor material 1 to harden.
Wait for the tip of the to be fixed to the ground.
【００３０】（管状アンカー材の緊張定着工程）第１の
注入による硬化材Ｇ１が硬化したならば、図１１に示す
ように、既設覆工物Ｃ１表面から突出する管状アンカー
材１の頭部１Ｈに対して、アンカー挿通孔１０ａを有す
る支圧板１０を通し、次いでそのアンカー材頭部１Ｈ周
面に形成されたネジ部１Ｎ（図１１には示していない）
にテンションナット１１を螺合させ締付ける。これによ
り、テンションナット１１がアンカー材１を介して地山
ＢＧに反力を取りつつ、支圧板１０を既設覆工物Ｃ１表
面に圧接させる。かくして、管状アンカー材頭部１Ｈを
既設覆工物Ｃ１表面に対して定着させるとともに、地山
ＢＧと既設覆工物Ｃ１とに跨って固定された管状アンカ
ー材１に作用する緊張力によって、地山ＢＧと既設覆工
物Ｃ１とを強固に一体化することができる。(Tension fixing step of tubular anchor material) When the hardening material G1 is hardened by the first injection, as shown in FIG. 11, the head 1H of the tubular anchor material 1 protruding from the surface of the existing lining C1. Through a support plate 10 having an anchor insertion hole 10a, and then a screw portion 1N formed on the peripheral surface of the anchor material head 1H (not shown in FIG. 11).
And tighten the tension nut 11. As a result, the tension plate 11 presses the support plate 10 against the surface of the existing lining C1 while taking a reaction force against the ground BG via the anchor material 1. Thus, the head 1H of the tubular anchor material is fixed to the surface of the existing lining C1, and the ground acting on the tubular anchor 1 fixed across the ground BG and the existing lining C1 is ground. The mountain BG and the existing lining C1 can be firmly integrated.
【００３１】なお、本例ではアンカー材１を緊張するこ
ととしたが、過度の緊張力が既設覆工物Ｃ１の空洞部Ｈ
を有する部分に作用すると、当該部分が破壊することが
想定される。したがって、テンションナット１１を締め
付け過ぎず、単にアンカー材頭部１Ｈが既設構造物Ｃ１
表面に接する程度でも良い。In this embodiment, the anchor member 1 is tensioned. However, excessive tension is applied to the hollow portion H of the existing lining C1.
It is assumed that when acting on a portion having Therefore, the tension nut 11 is not excessively tightened, and the anchor material head 1H is simply attached to the existing structure C1.
It may be in contact with the surface.
【００３２】（新規覆工工程）次に、図１２に示すよう
に、既設覆工物Ｃ１表面を新たに覆工し、新規覆工物Ｃ
２を構築する。新規覆工においては、アンカー材頭部１
Ｈが突出しているのを埋め殺すために、図示例のように
モルタル類を用いた吹き付け工法を採用するのが好まし
い。また、特に吹き付けの際には、次述する第２の注入
のために、管状アンカー材１の基端面の開口１ｃにキャ
ップ１２（ゴム製が好適）を嵌めておき、このキャップ
１２の基端部が露出するように、新規吹き付けを行うの
が好ましい。しかし他のコンクリートブロック等による
覆工を行っても良い。(New Covering Step) Next, as shown in FIG. 12, the surface of the existing covering C1 is newly covered,
Build 2. For new lining, the anchor material head 1
It is preferable to adopt a spraying method using a mortar as shown in the illustrated example in order to fill in the protrusion of H. In particular, at the time of spraying, a cap 12 (preferably made of rubber) is fitted into the opening 1c of the base end surface of the tubular anchor member 1 for the second injection described below. It is preferable to perform new spraying so that the part is exposed. However, lining with another concrete block or the like may be performed.
【００３３】（第２の注入工程）新規覆工が完了したな
らば、図１３に示すように、硬化材を、緊張定着されて
いる管状アンカー材１内およびアンカー材１の基端側部
分の吐出口ＢＨ１〜ＢＨ３を通して、既設覆工物Ｃ１背
面と地山ＢＧ表面との間の空洞部Ｈに対して注入充填す
る。(Second Injection Step) When the new lining is completed, as shown in FIG. 13, the hardening material is removed from the tensioned and fixed tubular anchor material 1 and the base end portion of the anchor material 1. The cavity H between the back surface of the existing lining C1 and the surface of the ground BG is injected and filled through the discharge ports BH1 to BH3.
【００３４】図示例では、前述キャップ１２を新規覆工
物Ｃ２表面側から取り外して、新規覆工物表面側からそ
の内部に埋め殺されたアンカー材１の基端面開口部１Ｃ
に連通する注入孔１３を形成する。しかる後、前述の第
２のパッカー装置（もちろん、第１のパッカー装置を用
いても良い。）を用い、その注入管部９を新規覆工物Ｃ
２の注入孔１３に挿入するとともに、パッカーＰを張出
させ注入孔１３の口元の隙間を塞いだ上で硬化材の注入
を行う。In the illustrated example, the cap 12 is removed from the front side of the new lining C2, and the opening 1C of the base end face 1C of the anchor material 1 embedded in the inside of the new lining C from the front side.
The injection hole 13 communicating with is formed. Thereafter, using the above-mentioned second packer device (of course, the first packer device may be used), the injection pipe portion 9 is connected to the new covering material C.
The injection of the hardening material is performed after the packer P is inserted into the second injection hole 13 and the gap at the mouth of the injection hole 13 is closed.
【００３５】この際、複数あるアンカー材１の基端側吐
出口ＢＨ１〜ＢＨ３のいずれか（図示例ではＢＨ３）
が、既設覆工物Ｃ１背面と地山ＢＧ表面との間の空洞部
Ｈと略同じ深さ方向位置にくるので、主にその基端側吐
出口ＢＨ３から空洞部Ｈに対して、ならびに主に他の基
端側吐出口ＢＨ１，…ＢＨ２，…からアンカー材１外面
とアンカー孔内面ＡＨ１との隙間Ｓ１における前述第１
の注入により注入しなかった残部に対する注入充填が行
われる。またこの際、通常の場合には、図中Ｇ２２とし
て示すように注入硬化材は隙間Ｓ１および空洞Ｈ周囲の
背面地山ＢＧ内にも浸透する。At this time, one of the plurality of base end side discharge ports BH1 to BH3 of the anchor member 1 (BH3 in the illustrated example).
Comes in the same depth direction as the cavity H between the back surface of the existing lining C1 and the surface of the ground BG, and therefore, mainly from the base end side discharge port BH3 to the cavity H. , BH2,..., BH2,... In the gap S1 between the outer surface of the anchor member 1 and the inner surface AH1 of the anchor hole.
Injection filling is performed for the remaining portion that has not been injected by the injection. At this time, in a normal case, the injection hardening material also penetrates into the back ground BG around the gap S1 and the cavity H as indicated by G22 in the drawing.
【００３６】（後処理）必要に応じて、前述第２の注入
に際して使用した、新規覆工物Ｃ２表面の前述キャップ
１２により形成された残孔１３にモルタル類Ｍを充填
し、新規覆工物表面が孔のない平坦な面となるようにコ
テ仕上げをする。(Post-treatment) If necessary, mortars M are filled in the residual holes 13 formed by the cap 12 on the surface of the new lining material C2 used for the second injection, and Finish ironing so that the surface becomes a flat surface without holes.
【００３７】＜第２の実施形態＞次に、前述配水管の挿
入設置例を図１５に示した。地盤を切取りまたは盛土に
よつてできた人工的な法面が風雨などによつて崩壊する
ことを防ぐために、ブロックを並設したり、モルタルを
吹き付けたりして法面覆工物Ｃ３を構築するとともに、
その覆工物Ｃ３を貫通する複数の排水管１００，…を高
さ方向位置を異ならせて構築している。この排水管１０
０は、基端側貫通孔１００Ｈ，…の数が異なる以外は、
前述のアンカー材と同様の構成を有するものである。１
００Ｂは先端ビットを示し、図示しないがこれに先端貫
通孔が形成されている。かかる排水管１００，…を設け
る場合には、例えば法面覆工を行っておき、前述のアン
カー材の削孔挿入工程および第１の注入工程と同様にし
て管体１００，…の削孔挿入ならびに管体先端部の硬化
材注入による定着を行うか、あるいは、覆工に先だっ
て、前述の管体削孔挿入工程および第１の注入工程と同
様にして、管体１００，…を地山ＢＧ内に削孔挿入する
とともにその先端部を地山ＢＧに定着し、しかる後、こ
の管体１００，…の突出基端部を埋めないように、法面
に覆工を行う。Ｇ３は、管体１００，…の定着にあたり
管体１００内を介してその先端部から注入した硬化材を
示している。かくして、背面地山ＢＧ内に含まれている
水は、配水管１００，…を介して、覆工物Ｃ３表側に図
中矢印で示すように排出されるようになる。<Second Embodiment> Next, FIG. 15 shows an example of inserting and installing the above-mentioned water distribution pipe. In order to prevent the artificial slope formed by cutting the ground or embankment from collapsing due to the weather, the blocks are juxtaposed or mortar is sprayed to construct the slope lining C3. With
A plurality of drainage pipes 100 penetrating the lining C3 are constructed at different height positions. This drain pipe 10
0 is different except that the number of base end side through holes 100H,.
It has the same configuration as the anchor material described above. 1
00B denotes a tip bit, which is not shown and has a tip through hole formed therein. When such drainage pipes 100,... Are provided, for example, slope lining is performed, and drilling and insertion of pipes 100,. Is fixed by injecting a hardening material at the tip of the tube, or prior to lining, the tubes 100,... Are ground BG in the same manner as in the tube hole insertion step and the first injection step. A hole is inserted into the inside, and the front end is fixed to the ground BG. Thereafter, the slope is covered so as not to fill the protruding base end of the pipes 100,. G3 indicates a hardening material injected from the distal end portion through the inside of the tubular body 100 when the tubular bodies 100 are fixed. Thus, the water contained in the back ground BG is discharged to the front side of the lining C3 through the water distribution pipes 100,.
【００３８】＜その他＞ （イ）他方、本発明では、管体の自削孔挿入に先だって
予備削孔を行い、管体挿入予定位置に下孔を形成してお
くことができる。この場合、管体による自削孔の削孔径
よりも大径の孔を削孔しておくのが好ましい。かかる予
備削孔を行うと、予備削孔と管体の自削孔挿入とを行う
ので二度手間になるものの、その後の管体の自削孔によ
る挿入が容易になる。また、予備削孔を行ったのに、管
体挿入前に挿入孔が多少崩壊してしまっていたりするこ
とが良くあることについては前述したが、本発明では管
体を自削孔により挿入するので、そのような場合にも従
来例のように管体を挿入できないことは実質的になく、
円滑な挿入が可能である。<Others> (A) On the other hand, in the present invention, preliminary drilling is performed prior to insertion of a self-cutting hole in a tube, and a pilot hole can be formed at a position where the tube is to be inserted. In this case, it is preferable to drill a hole having a diameter larger than the diameter of the self-drilling hole formed by the pipe. When the preliminary drilling is performed, the preliminary drilling and the insertion of the self-drilling hole of the tube are performed twice, which is troublesome, but the subsequent insertion of the tube by the self-drilling hole becomes easy. In addition, although the preliminary drilling was performed, it has been described above that the insertion hole is often slightly collapsed before inserting the tube, but in the present invention, the tube is inserted by the self-drilling hole. Therefore, even in such a case, there is substantially no case where the tube body cannot be inserted as in the conventional example,
Smooth insertion is possible.
【００３９】（ロ）上記例では、アンカー材１の先端部
固定ならびにアンカー材１とアンカー孔ＡＨとの隙間Ｓ
１充填のための注入（第１の注入）と、既設覆工物Ｃ１
背面の空洞Ｈ充填のための注入（第２の注入）とを二回
に分けて行っている。しかし、本発明はこれに限定され
ず、例えば前述第１の注入において、先端吐出口ＰＨ，
…ならびに基端側吐出口ＢＨ１〜ＢＨ３の両方から硬化
材を吐出させ、それら両対象部位への注入を同時的に行
い、アンカー材を地山に定着させることもできる。(B) In the above example, the distal end portion of the anchor member 1 is fixed and the gap S between the anchor member 1 and the anchor hole AH is set.
1. Injection for filling (first injection) and existing lining C1
The injection for filling the cavity H on the back surface (the second injection) is performed in two steps. However, the present invention is not limited to this. For example, in the first injection described above, the front end discharge ports PH,
, And the hardening material is discharged from both of the base-side discharge ports BH1 to BH3, and simultaneously injected into both of the target portions, so that the anchor material can be fixed to the ground.
【００４０】（ハ）本発明では、管体の挿入対象部位へ
の定着に際し、上記例のように管体（アンカー材１）内
を介しての硬化材の注入により行う必要はなく、本発明
の範囲において他の公知の方法により、管体先端部を地
山に定着させることができる。(C) In the present invention, it is not necessary to inject the hardening material through the inside of the tube (anchor material 1) as in the above-described example when fixing the tube to the insertion target site. The tip of the tubular body can be fixed to the ground by another known method in the range of (1).
【００４１】[0041]
【発明の効果】以上のとおり、本発明によれば、管体の
挿入を容易かつ円滑に行うことができるようになり、も
って作業能率の向上を図ることができる。As described above, according to the present invention, the tube can be inserted easily and smoothly, and the working efficiency can be improved.
【図１】本発明に係る、アンカー材およびエア供給用内
管を示す、縦断面図である。FIG. 1 is a longitudinal sectional view showing an anchor material and an air supply inner pipe according to the present invention.
【図２】アンカー材にエア供給用内管を取付けた状態を
示す、縦断面図である。FIG. 2 is a longitudinal sectional view showing a state where an air supply inner pipe is attached to an anchor member.
【図３】自削孔工程を示す、一部縦断面図である。FIG. 3 is a partial vertical sectional view showing a self-drilling step.
【図４】エア供給用内管の他の例を示す、縦断面図およ
び要部拡大図である。FIG. 4 is a longitudinal sectional view and a main part enlarged view showing another example of the air supply inner pipe.
【図５】地削孔工程終了後の状態を示す、一部縦断面図
である。FIG. 5 is a partial longitudinal sectional view showing a state after a ground drilling step is completed.
【図６】第１の注入工程を示す、一部縦断面図である。FIG. 6 is a partial longitudinal sectional view showing a first injection step.
【図７】第１のパッカー装置を示す、一部縦断面図であ
る。FIG. 7 is a partial vertical sectional view showing the first packer device.
【図８】そのパッカー膨出状態を示す、一部縦断面図で
ある。FIG. 8 is a partial longitudinal sectional view showing the packer swelling state.
【図９】図８のの要部拡大図である。FIG. 9 is an enlarged view of a main part of FIG.
【図１０】第２のパッカー装置を示す、一部縦断面図で
ある。FIG. 10 is a partial vertical sectional view showing a second packer device.
【図１１】管状アンカー材の緊張定着工程を示す、一部
縦断面図である。FIG. 11 is a partial longitudinal sectional view showing a tension fixing step of the tubular anchor member.
【図１２】新規覆工工程を示す、一部縦断面図である。FIG. 12 is a partial longitudinal sectional view showing a new lining process.
【図１３】第２の注入工程を示す、一部縦断面図であ
る。FIG. 13 is a partial longitudinal sectional view showing a second injection step.
【図１４】仕上げ工程を示す、一部縦断面図である。FIG. 14 is a partial longitudinal sectional view showing a finishing step.
【図１５】第２の実施形態を示す概略縦断面図である。FIG. 15 is a schematic longitudinal sectional view showing a second embodiment.
１…管状アンカー材、ＢＨ１〜ＢＨ３…基端側吐出口、
ＰＨ…先端吐出口、３…エア供給用内管、５…第１のパ
ッカー装置、５０…第２のパッカー装置、９…ワンタッ
チ操作手段、Ｃ１…既設覆工物、Ｃ２…新規覆工物、Ｂ
Ｇ…地山。1: tubular anchor material, BH1 to BH3: base end side discharge port,
PH: tip discharge port, 3: inner pipe for air supply, 5: first packer device, 50: second packer device, 9: one-touch operation means, C1: existing lining, C2: new lining, B
G: Ground mountain.
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成１２年３月１６日（２０００．３．１
６）[Submission date] March 16, 2000 (200.3.1.1)
6)
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】全文[Correction target item name] Full text
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【書類名】明細書[Document Name] Statement
【発明の名称】管体の挿入設置方法およびこれに用いる
管体Patent application title: Method of inserting and installing a tube and tube used for the method
【特許請求の範囲】 孔付の中空パイプを地山に自穿孔で入れる。Claims A hollow pipe with a hole is self-drilled into the ground.
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【発明の属する技術分野】本発明は、法面地山や法面地
山を覆工した覆工法面などを含む挿入対象部位に対する
管体の挿入設置方法およびこれに用いる管体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for inserting and installing a pipe into a site to be inserted including a sloped ground or a lining slope where the sloped ground is covered, and a pipe used therefor.
【０００２】[0002]
【従来の技術】例えば、地盤を切取りまたは盛土によっ
てできた人工的な法面が風雨などによって崩壊すること
を防ぐために、ブロックを並設したり、モルタルを吹き
付けたりして法面覆工を行うとともに、その覆工物を貫
通する排水管を設けることがある。この場合、削孔ドリ
ルにより覆工物を貫通して背面地山内まで延在する挿入
孔を設け、その削孔ドリルを挿入孔内から引き抜いた後
に、その挿入孔内に排水管を挿入していた。2. Description of the Related Art For example, blocks are juxtaposed or mortar is sprayed on a slope to prevent an artificial slope formed by cutting or embankment of the ground from collapsing due to wind and rain. In addition, a drain pipe may be provided to penetrate the lining. In this case, an insertion hole penetrating through the lining with a drilling drill and extending to the inside of the rear ground is provided, and after the drilling drill is pulled out from the insertion hole, a drain pipe is inserted into the insertion hole. Was.
【０００３】他方、近年では、法面等の既設覆工物の補
修方法が提案され実用に供されている。既設覆工物の補
修方法は、例えば本出願人らによる先の特公平５−２２
７７５号に示されるように、既設覆工物を破壊すること
なく覆工物と背面地山との間の空洞等を計測し、次いで
削孔ドリルにより既設覆工物を貫通させて地山内までア
ンカー孔を削孔した後に、削孔ドリルを引き抜き、続い
てこのアンカー孔にアンカー材を挿入し、このアンカー
材内を通じて、覆工物と背面地山との間の空洞等に硬化
材を充填し、しかる後に既設覆工物表面を新たに覆工す
るものである。この場合、使用するアンカー材は管体で
あり、前述の排水管と同様に削孔ドリルで前もって削孔
形成した挿入孔に挿入していた。On the other hand, in recent years, a method of repairing an existing lining such as a slope has been proposed and put to practical use. The repair method of the existing lining is described in, for example, Japanese Patent Publication No. 5-22 by the present applicant.
As shown in No. 775, without destroying the existing lining, measure the cavity etc. between the lining and the back ground, and then penetrate the existing lining with a drill to reach the ground. After drilling the anchor hole, pull out the drill hole, then insert the anchor material into this anchor hole, fill the cavity etc. between the lining and the back ground through this anchor material with the hardening material Thereafter, the surface of the existing lining is newly lining. In this case, the anchor material to be used was a tubular body, which was inserted into an insertion hole formed in advance by a hole drill in the same manner as the above-mentioned drainage pipe.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、これら
の従来例では、削孔ドリルにより挿入孔を削孔した後
に、削孔ドリルを引き抜き、続いてその挿入孔に管体を
挿入していたため、削孔と管体挿入とが二度手間となっ
ていた。However, in these prior arts, after drilling an insertion hole with a drill, the drill is pulled out and then a tube is inserted into the insertion hole. The hole and the insertion of the tube were troublesome twice.
【０００５】また一般に、既設覆工物の背面地山等は雨
水の浸透等により風化し脆弱化していることが多いた
め、削孔した管体挿入孔が崩壊し易く、管体を円滑に挿
入できないこともあった。In general, the ground behind the existing lining is often weathered and weakened due to rainwater infiltration or the like, so that the drilled tube insertion hole is easily broken and the tube is inserted smoothly. There were things I couldn't do.
【０００６】そこで、本発明の主たる課題は、管体の挿
入を容易かつ円滑に行うことができるようにし、もって
作業能率の向上を図ることにある。[0006] Therefore, a main object of the present invention is to make it possible to easily and smoothly insert a tube, thereby improving work efficiency.
【０００７】[0007]
【課題を解決するための手段】上記課題を解決した本発
明の管体の挿入設置方法は、管体をその基端部を残して
挿入対象物へ挿入して設置する方法であって、先端ビッ
トを備えるとともに、前記挿入対象部位へ挿入しない基
端部を除く周壁部分に貫通孔を形成してなる管体を用い
て前記挿入対象部位を削孔し、この削孔によって前記管
体を少なくともその前記貫通孔形成部分まで前記挿入対
象部位へ挿入し設置することを特徴とするものである。According to the present invention, there is provided a method of inserting and installing a tube body, which comprises inserting a tube body into an object to be inserted while leaving a base end thereof, and comprising: With a bit, the insertion target site is drilled using a pipe having a through hole formed in a peripheral wall portion excluding a base end portion that is not inserted into the insertion target site, and at least the pipe body is cut by the drilling. It is characterized in that it is inserted into the insertion target portion up to the through hole forming portion and installed.
【０００８】この場合において、前記貫通孔は、前記先
端ビットを含む管体先端部と、この先端部および前記挿
入対象部位へ挿入しない基端部を除く基端側周壁部分と
にそれぞれ形成されており、前記削孔に際し、削孔エア
を、前記管体内を通して前記管体先端部の貫通孔のみか
ら吹出させつつ削孔を行うのは好ましい。In this case, the through holes are formed in the distal end portion of the tubular body including the distal end bit and the proximal end side peripheral wall portion excluding the distal end portion and the proximal end not inserted into the insertion target portion. In the drilling, it is preferable that the drilling is performed while blowing the drilling air through only the through hole at the distal end of the tubular body through the tubular body.
【０００９】より具体的には、前記貫通孔は、前記先端
ビットを含む管体先端部と、この先端部および前記挿入
対象部位へ挿入しない基端部を除く基端側周壁部分とに
それぞれ形成されており、前記削孔に際し、前記管体内
にエア供給用内管を挿入し、かつこのエア供給用内管を
前記管体先端部の貫通孔にのみ連通させた状態で、削孔
エアを、このエア供給用内管を通して前記管体先端部の
貫通孔のみから吹出させつつ削孔を行う、ことを提案す
る。More specifically, the through holes are respectively formed in the distal end portion of the tubular body including the distal end bit and the proximal end side peripheral wall portion excluding the distal end portion and the proximal end portion that is not inserted into the insertion target site. In the drilling, an air supply inner pipe is inserted into the pipe, and the air supply inner pipe is communicated only with the through-hole at the distal end of the pipe body. It is proposed that the drilling be performed while blowing out only the through hole at the distal end portion of the tubular body through the inner pipe for air supply.
【００１０】また、前記管体の挿入後、硬化材を、前記
管体内を通して前記先端部の貫通孔および基端側周壁部
分の貫通孔の少なくとも一方から吐出させて、少なくと
も吐出硬化材を前記管体外面とその挿入孔壁との隙間に
注入充填して、前記管体を前記挿入対象部位に対して定
着させ、しかる後に、前記注入した硬化材が硬化する前
に、圧気を、前記管体内を通して前記基端側周壁部分の
貫通口のみから吹出させることができる。After the tube is inserted, the hardening material is discharged through at least one of the through-hole at the distal end portion and the through-hole at the base side peripheral wall portion through the tube, and at least the hardened material is discharged from the tube. The gap between the outer surface of the body and the wall of the insertion hole is injected and filled, and the tube is fixed to the insertion target site. Thereafter, before the injected hardening material is hardened, air is blown into the tube. And can be blown out only from the through-hole of the base end side peripheral wall portion.
【００１１】他方、これら管体挿入方法に用いる本発明
の管体は、基端部を残して挿入対象部位へ挿入して設置
される管体であって、先端ビットを備えるとともに、挿
入対象部位へ挿入しない基端部を除く周壁部分に貫通孔
を形成してなることを特徴とするものである。On the other hand, the tubular body of the present invention used in these tubular body inserting methods is a tubular body to be inserted into a portion to be inserted except for a base end portion and provided with a tip bit, A through-hole is formed in a peripheral wall portion excluding a base end portion that is not inserted into the through hole.
【００１２】この場合において、前記貫通孔は、前記先
端ビットを含む管体先端部と、この先端部および前記挿
入対象部位へ挿入しない基端部を除く基端側周壁部分と
にそれぞれ形成されており、前記管体内を通して前記管
体先端部の貫通孔のみから削孔エアを吹出させる、削孔
エア供給手段を備えた管体とするのは好ましい。より具
体的には、削孔エア供給手段は、前記管体内に挿入され
た、前記管体先端部の貫通孔にのみ連通するエア供給用
内管で構成することができる。In this case, the through holes are formed in the distal end portion of the tubular body including the distal end bit and the proximal end side peripheral wall portion excluding the distal end portion and the proximal end not inserted into the insertion target portion. Preferably, the pipe is provided with drilling air supply means for blowing drilling air only from the through hole at the distal end of the pipe through the pipe. More specifically, the drilling air supply means can be constituted by an air supply inner pipe inserted into the pipe and communicating only with a through hole at the distal end of the pipe.
【００１３】＜作用＞本発明の主たるポイントは、管体
を自身先端の削孔ビットにより削孔しつつ背面地山内ま
で挿入する点にある。すなわち、本発明は、管体挿入と
その挿入孔の削孔とを同時に行う、自削孔挿入を特徴事
項とするものである。したがって、本発明では、管体挿
入に先立って予め管体挿入のための孔を削孔しなくとも
良く、その分手間数を減らすことができる。また後述す
るように管体の自削孔挿入に先立って予め挿入孔を削孔
する場合であっても、その下孔に沿って管体を自削孔挿
入することで、下孔の一部崩壊等に関係無く、管体を円
滑に挿入できる利点がある。<Operation> The main point of the present invention is that the pipe is drilled by the drill bit at the tip of the pipe itself and inserted into the back ground. That is, the present invention is characterized by self-cutting hole insertion in which the insertion of the tube and the cutting of the insertion hole are performed simultaneously. Therefore, according to the present invention, it is not necessary to drill a hole for inserting the tube in advance before inserting the tube, and the number of labors can be reduced by that amount. Also, as described later, even when the insertion hole is pre-drilled prior to the insertion of the self-drilling hole of the tube, by inserting the self-cutting hole along the prepared hole, a part of the prepared hole is formed. There is an advantage that the pipe can be inserted smoothly regardless of collapse or the like.
【００１４】[0014]
【発明の実施の形態】＜第１の実施形態＞先ず、本発明
の第１の実施形態について、前述した特公平５−２２７
７５号に示される補修工法への適用例を引いて詳説す
る。 （空洞部等の検出）既設覆工物の補修工法においては初
めに、既設覆工物背面のどの箇所に空洞が生じているか
を正確に特定する必要がある。空洞を特定する公知の手
段としては、例えば、超音波の反射波を利用して検出す
る方法、空洞と他の箇所との熱放射の違いを熱赤外線カ
メラで検出して特定する方法、ハンマーで覆工物を叩
き、その際の音を聞き分けて経験によって検出する方法
等がある。これらはいずれも公知の方法であるので、こ
こでは敢えて説明を略す。空洞の位置が特定されたなら
ば、その部位に以下に述べるように新規にアンカーを設
ける。DESCRIPTION OF THE PREFERRED EMBODIMENTS <First Embodiment> First, a first embodiment of the present invention will be described with reference to Japanese Patent Publication No. 5-227.
An example of application to the repair method shown in No. 75 will be described in detail. (Detection of Cavity, etc.) In the repairing method of an existing lining, it is first necessary to accurately identify where on the back of the existing lining a cavity is formed. As a known means for specifying the cavity, for example, a method of detecting using a reflected wave of ultrasonic waves, a method of detecting and specifying the difference in heat radiation between the cavity and other parts by using a thermal infrared camera, a method using a hammer There is a method of hitting a lining, hearing the sound at that time, and detecting it by experience. Since these are all known methods, the explanation is omitted here. Once the location of the cavity has been identified, a new anchor is provided at that location as described below.
【００１５】（管状アンカー材（本発明にいう管体に相
当する）の削孔挿入工程）本発明では、例えば図１に示
すような、先端ビット１Ｂを備えるとともに、この先端
ビット１Ｂの先端面と頭部１Ｈを除く基端側部分とに、
内外に連通する先端吐出口ＰＨ，…および基端側吐出口
ＢＨ１〜ＢＨ３をそれぞれ形成した管状アンカー材（以
下、単にアンカー材ともいう。）１を新規アンカーとし
て用いる。これら吐出口が本発明にいう貫通孔に相当す
る。頭部１Ｈは非挿入部分であり、アンカー材１の挿入
深さ等に応じて適宜長さを定める。また、図示例では、
基端側吐出口ＢＨ１〜ＢＨ３を長手方向に間隔を空けて
複数設けており、これらのうちいずれかが次述の挿入後
において、既設覆工物背面と地山表面との間の空洞部と
略同じ深さ方向位置にくるようになっている。(Step of Inserting a Hole in a Tubular Anchor Material (corresponding to a Tube in the Present Invention)) In the present invention, a tip bit 1B as shown in FIG. 1 is provided, and the tip face of the tip bit 1B is provided. And the base end except for the head 1H,
A tubular anchor material (hereinafter, also simply referred to as an anchor material) 1 in which a distal discharge port PH,... Communicating with the inside and outside, and a proximal discharge port BH1 to BH3 are formed is used as a new anchor. These discharge ports correspond to the through holes according to the present invention. The head 1H is a non-insertion portion, and its length is appropriately determined according to the insertion depth of the anchor member 1 and the like. In the illustrated example,
A plurality of base end side discharge ports BH1 to BH3 are provided at intervals in the longitudinal direction, and any one of them is provided with a hollow portion between the back surface of the existing lining and the ground surface after the insertion described below. They are located at approximately the same depth position.
【００１６】そして図３に示すように、かかる管状アン
カー材１により既設覆工物Ｃ１を貫通してその背面の地
山ＢＧ内まで削孔し、この削孔によって管状アンカー材
１をその頭部１Ｈを残して地山ＢＧ内まで挿入する。図
示例では圧気を先端ビット１Ｂの先端吐出口から吹出し
て、この吹出しエアに乗せて削孔屑をアンカー材１外面
とアンカー孔壁ＡＨ１との隙間Ｓ１から既設覆工物Ｃ１
表面側へ排出させる、いわゆるエア削孔を採用してい
る。２は削岩機を示している。As shown in FIG. 3, the tubular anchor 1 penetrates through the existing lining C1 and drills a hole in the ground BG on the back surface thereof. Insert into the ground BG leaving 1H. In the illustrated example, compressed air is blown out from the discharge end of the tip bit 1B, and the drilled air is put on the blown air to remove drilling dust from the gap S1 between the outer surface of the anchor material 1 and the anchor hole wall AH1.
The so-called air drilling that discharges to the surface side is adopted. 2 indicates a rock drill.
【００１７】かかるエア削孔を行う場合、基端側吐出口
ＢＨ１〜ＢＨ３からも削孔エアを吹出させてしまうと、
その吹出しエアが削孔屑の排出を妨げるように作用し、
削孔屑の排出が円滑に行われない。そこで、図１および
図２に示すように、管状アンカー材１内にエア供給用内
管３を挿入し、かつこのエア供給用内管３を先端吐出孔
ＰＨ，…にのみ連通させた状態として、削孔エアを、こ
のエア供給用内管３の内部流路３Ｆを通して先端吐出口
ＰＨ，…のみから吹出させつつ削孔を行うのが好まし
い。この例ではエア供給用内管３の先端面３ａを、先端
ビット１Ｂ背面の先端吐出口への入口面１ｂに突き合わ
せ状態で直接接続しているが、図４に示すように、エア
供給用内管３の先端出口３ａを、最先端側の基端側吐出
口ＢＨ１と先端吐出口の入口１ｂとの間のアンカー材１
内に臨ませ、エア供給用内管３の内部流路３Ｆと先端吐
出口の入口１ｂとをアンカー材内流路１Ｆの一部分を介
して間接的に接続することもできる。この場合、エア供
給用内管３の少なくとも先端部３０の外周面をアンカー
材内周面に密着させる（図示例では、エア供給用内管３
の先端部３０の外周面にシールリングＲを巻付けて密着
シールしている）。In performing such air drilling, if drilling air is also blown out from the base end side discharge ports BH1 to BH3,
The blowing air acts to prevent the discharge of drilling debris,
Discharge of drilling debris is not performed smoothly. Therefore, as shown in FIGS. 1 and 2, the air supply inner pipe 3 is inserted into the tubular anchor member 1 and the air supply inner pipe 3 is communicated only with the tip end discharge holes PH,. It is preferable that the drilling is performed while the drilling air is blown out only from the distal end outlets PH,... Through the internal flow path 3F of the air supply inner pipe 3. In this example, the distal end surface 3a of the air supply inner pipe 3 is directly connected to the inlet surface 1b to the distal end discharge port on the back surface of the distal end bit 1B, but as shown in FIG. The distal end outlet 3a of the pipe 3 is connected to the anchor member 1 between the base end side discharge port BH1 on the foremost side and the front end discharge port entrance 1b.
The internal flow path 3F of the air supply inner pipe 3 and the inlet 1b of the distal end discharge port can be indirectly connected via a part of the anchor material flow path 1F. In this case, the outer peripheral surface of at least the distal end portion 30 of the air supply inner tube 3 is brought into close contact with the anchor material inner peripheral surface (in the illustrated example, the air supply inner tube 3
A seal ring R is wound around the outer peripheral surface of the distal end portion 30 for tight sealing.
【００１８】また、図１および図２に示す例のエア供給
内管３の基端部には、アンカー材１と削岩機２とを接続
する接続部４が取付けられている。この接続部４は先端
側にナット部４ａを有し、アンカー材１の基端部周面に
形成されたネジ部１Ｎの外側に螺合するようなってい
る。この接続前の状態が図１に、接続後の状態が図２に
示されている。A connecting portion 4 for connecting the anchor material 1 and the rock drill 2 is attached to the base end of the air supply inner pipe 3 in the example shown in FIGS. The connection portion 4 has a nut portion 4a on the distal end side, and is screwed to the outside of a thread portion 1N formed on the peripheral surface of the base end portion of the anchor material 1. The state before the connection is shown in FIG. 1, and the state after the connection is shown in FIG.
【００１９】削孔挿入が完了したならば、図５に示すよ
うにアンカー材１を引き抜かずに残して、その挿入した
状態のアンカー材１から削岩機２および接続部４を含む
エア供給用内管３を取り外す（図５には取り外した状態
を示している）。When the drilling is completed, as shown in FIG. 5, the anchor 1 is left without being pulled out, and the rock drill 2 and the air supply including the connecting portion 4 are removed from the anchor 1 in the inserted state. The inner tube 3 is removed (FIG. 5 shows a state where the inner tube 3 is removed).
【００２０】（第１の注入工程）次に図６に示すよう
に、この削孔挿入した管状アンカー材１を引き抜かず
に、硬化材Ｇ１を、その管状アンカー材１内および先端
側部分の吐出口ＰＨ，…を通して吐出させる。この吐出
硬化材Ｇ１は、管状アンカー材１とアンカー孔ＡＨとの
隙間Ｓ１における少なくとも先端側部分に対して注入充
填する。さらに通常の場合には、図中Ｇ１１として示す
ように注入硬化材は隙間周囲の背面地山ＢＧ内にも浸透
する。(First Injection Step) Next, as shown in FIG. 6, the hardened material G1 is discharged into the tubular anchor material 1 and the distal end portion thereof without pulling out the drilled and inserted tubular anchor material 1. Discharge through outlets PH, ... The discharge hardening material G1 is injected and filled into at least the front end portion in the gap S1 between the tubular anchor material 1 and the anchor hole AH. Further, in a normal case, the injection hardening material also penetrates into the back ground BG around the gap as shown by G11 in the drawing.
【００２１】ここで、好適には図７〜９に示す第１のパ
ッカー装置５または図１０に示す第２のパッカー装置５
０を用いて注入を行う。先ず両パッカー装置５，５０の
共通点について説明すると、それらはいずれも次のよう
な構成を有するものである。すなわち、相対的に大径の
拡径部６ａを先端側部分に有する内管６と、拡径部６ａ
より後方の内管部分を隙間をもって取り囲み、且つ内管
６に対してその長手方向に沿って前後スライド自在とさ
れた外管７と、この外管７の先端面と内管拡径部６ａの
後端面との間の内管部分を取り囲む筒状の可撓性パッカ
ー部材５Ｐとを含む、注入管部８を備えるとともに、内
管６を外管７に対して前後スライド移動させるワンタッ
チ操作手段９を備えたものである。Here, preferably, the first packer device 5 shown in FIGS. 7 to 9 or the second packer device 5 shown in FIG.
Inject using 0. First, the common features of the two packer devices 5 and 50 will be described. Both of them have the following configuration. That is, the inner pipe 6 having a relatively large-diameter enlarged portion 6a at the distal end portion, and the enlarged portion 6a
An outer tube 7 surrounding the inner tube portion further rearward with a gap and being slidable back and forth with respect to the inner tube 6 along the longitudinal direction thereof, and a distal end face of the outer tube 7 and an inner tube enlarged portion 6a. A one-touch operation means 9 including an injection pipe portion 8 including a tubular flexible packer member 5P surrounding the inner pipe portion between the rear pipe and the inner pipe 6 with respect to the outer pipe 7; It is provided with.
【００２２】このワンタッチ操作手段９は、より詳細に
は、外管７に対して取付けられた軸部材周りに揺動する
ハンドル９Ｈと、このハンドル９Ｈの揺動に応じて内管
６を外管７に対して前後スライド移動させるリンク機構
部９Ｒとからなり、ハンドル９Ｈの揺動によりリンク機
構部９Ｒを介して内管６を外管７に対して後へスライド
移動させることによって、内管６の拡径部６ａの後端面
と外管７の先端面との間で可撓性パッカー部材５Ｐを挟
み圧縮して側方に膨張させ張出させることができるよう
に構成したものである。More specifically, the one-touch operation means 9 comprises a handle 9H swinging around a shaft member attached to the outer tube 7 and an inner tube 6 in response to the swing of the handle 9H. And a link mechanism 9R that slides back and forth with respect to the inner tube 6. The inner tube 6 is slid rearward with respect to the outer tube 7 via the link mechanism 9R by swinging of the handle 9H. The flexible packer member 5P is sandwiched between the rear end surface of the enlarged diameter portion 6a and the front end surface of the outer tube 7 so that the flexible packer member 5P can be expanded and laterally expanded.
【００２３】かくして、このワンタッチ操作手段９によ
り、図８に示すように内管６を外管７に対して後へスラ
イド移動させることによって、内管６の拡径部６ａと外
管７先端面との間で可撓性パッカー部材５Ｐを挟み圧縮
して側方に膨張させ張出させることができる。Thus, the one-touch operation means 9 causes the inner pipe 6 to slide backward with respect to the outer pipe 7 as shown in FIG. The flexible packer member 5 </ b> P can be sandwiched and compressed between them to expand and expand laterally.
【００２４】このように、両パッカー装置５，５０はパ
ッカー部材５Ｐの張出し機構において異なるところはな
く（相違する構造については後述する。）、双方ともに
ワンタッチでパッカー部材５Ｐを張出させることができ
るものであるので、ナットを締めつけていくことでパッ
カーを張出させる公知のタイプの装置と比べて各段に迅
速かつ容易にパッカー張出しを行うことができる利点を
有する。しかし、本発明ではもちろん従来のナット締め
タイプのもの（前掲特公平５−２２７７５号の第５図参
照）を用いることもできる。As described above, there is no difference between the two packer devices 5 and 50 in the extension mechanism of the packer member 5P (a different structure will be described later), and both can extend the packer member 5P with one touch. Therefore, there is an advantage that the packer can be quickly and easily extended to each stage as compared with a known type device in which the packer is extended by tightening the nut. However, in the present invention, a conventional nut-tightening type (see FIG. 5 of Japanese Patent Publication No. 5-22775) can be used.
【００２５】注入に際しては、先ず、可撓性パッカー部
材５Ｐが側方に張出していない状態で、パッカー装置５
の注入管部８をアンカー材１内に挿入する。この際、パ
ッカー部材５Ｐの張出状態を示す図９から理解できるよ
うに、注入管部８のパッカー部材５Ｐが少なくともアン
カー材１の最先端側の基端側吐出口ＢＨ１を塞ぎうる位
置、すなわち好ましくは最先端側の基端側吐出口ＢＨ１
よりも先端側に位置させる。しかる後、図９に示すよう
に、ワンタッチ操作手段９によりパッカー部材５Ｐを側
方に張出させ、その張出したパッカー部材５Ｐによりア
ンカー材１の内面と注入管部８の外面との隙間Ｓ２を塞
いだ状態とする。その上で、この閉塞状態を保持しつ
つ、硬化材Ｇ１をパッカー装置５の内管６内を通してア
ンカー材１内へ供給する。硬化材Ｇ１はアンカー材１内
を通り、先端吐出口ＰＨ，…のみから吐出される。At the time of injection, first, the packer device 5P is in a state where the flexible packer member 5P is not protruding to the side.
Is inserted into the anchor material 1. At this time, as can be understood from FIG. 9 showing the projecting state of the packer member 5P, a position where the packer member 5P of the injection pipe portion 8 can close at least the base end side discharge port BH1 on the most distal end side of the anchor material 1, that is, Preferably, the most proximal side outlet port BH1
More distally. Thereafter, as shown in FIG. 9, the packer member 5P is extended laterally by the one-touch operation means 9, and the gap S2 between the inner surface of the anchor member 1 and the outer surface of the injection pipe portion 8 is formed by the extended packer member 5P. It is in the closed state. Then, the hardening material G1 is supplied into the anchor material 1 through the inner pipe 6 of the packer device 5 while maintaining the closed state. The hardening material G1 passes through the anchor material 1 and is discharged only from the distal end discharge ports PH,.
【００２６】かくして、硬化材Ｇ１を、アンカー材１内
を介して先端吐出口ＰＨ，…のみから吐出させ、アンカ
ー材１外面とアンカー孔内面ＡＨ１との隙間Ｓ１に対し
て注入充填することができる。Thus, the hardening material G1 can be discharged from only the distal end discharge ports PH,... Through the inside of the anchor material 1, and injected and filled into the gap S1 between the outer surface of the anchor material 1 and the inner surface AH1 of the anchor hole. .
【００２７】ところで、かかるアンカー材先端部のみの
硬化材注入において、注入量が多すぎるもしくは注入ス
ピードが速すぎることなどが原因で、注入した硬化材が
アンカー材１の基端側吐出口ＢＨ１〜ＢＨ３を閉塞して
しまうことがある。これでは、後述する第２の注入工程
において円滑な硬化材注入ができなくなったり、あるい
は注入不能となったりすることが想定される。これに対
して、前述第１のパッカー装置５を用いると、この閉塞
を防止することができる。By the way, in the injection of the hardening material only at the distal end portion of the anchor material, the injected hardening material may be excessively high or the injection speed may be too high. BH3 may be blocked. In this case, it is supposed that smooth injection of the hardening material becomes impossible or impossible in the second injection step described later. On the other hand, if the first packer device 5 is used, this blockage can be prevented.
【００２８】すなわち図９に詳細に示すように、第１の
パッカー装置５では、第２のパッカー装置５０と異な
り、外管７の先端側に圧気吹出口７ａ，７ａを形成する
とともに、この圧気吹出口に対して内管６外面と外管７
内面との隙間Ｓ３を介して連通する圧気供給口９ａをワ
ンタッチ操作手段９に設けており、少なくとも前述第１
の注入工程以降であって且つその注入硬化材の硬化前
に、好適には第１の注入直後に、圧気を圧気供給口９ａ
および隙間Ｓ３を通して圧気吹出口７ａ，７ａから外管
７外面とアンカー材１内面との隙間Ｓ４に吹出させ、こ
の吹出圧気を、更にアンカー材１の基端側吐出口ＢＨ１
〜ＢＨ３から吹出させて、それら基端側吐出口ＢＨ１〜
ＢＨ３ならびにこれに連通する隙間Ｓ４，Ｓ３等を塞い
でいる未硬化の硬化材を吹き飛ばすことができる。かく
して、第１の注入による硬化材Ｇ１によりアンカー材１
の基端側吐出口ＢＨ１〜ＢＨ３への連通路が塞がってし
まうのを防止できる。なお、図６の工程図にはこの第１
のパッカー装置５が示されている。注入後、パッカー装
置５はアンカー材から引き抜かれる。That is, as shown in detail in FIG. 9, in the first packer device 5, unlike the second packer device 50, compressed air outlets 7 a, 7 a are formed at the distal end side of the outer tube 7 and the compressed air Outer surface of inner tube 6 and outer tube 7
The one-touch operation means 9 is provided with a compressed air supply port 9a which communicates with the inner surface via a gap S3.
After the injection step and before the injection hardening material is cured, preferably immediately after the first injection, the compressed air is supplied to the compressed air supply port 9a.
And the gap S3 is blown from the compressed air outlets 7a, 7a to the gap S4 between the outer surface of the outer tube 7 and the inner surface of the anchor member 1, and the blown air is further discharged to the base end discharge port BH1 of the anchor member 1.
BH3 to the base end discharge ports BH1 to BH3.
The uncured hardening material that blocks BH3 and the gaps S4, S3, etc. communicating therewith can be blown off. Thus, the anchor material 1 is provided by the hardened material G1 obtained by the first injection.
Blockage of the communication path to the base end side discharge ports BH1 to BH3 can be prevented. Note that the first step is shown in the process diagram of FIG.
Is shown. After injection, the packer device 5 is withdrawn from the anchor material.
【００２９】（硬化待ち）一方、前述の第１の注入工程
で注入した硬化材Ｇ１の硬化により、管状アンカー材１
の先端側部分が地山に対して固定されるのを待つ。(Curing wait) On the other hand, the curing of the hardening material G1 injected in the first injection step described above causes the tubular anchor material 1 to harden.
Wait for the tip of the to be fixed to the ground.
【００３０】（管状アンカー材の緊張定着工程）第１の
注入による硬化材Ｇ１が硬化したならば、図１１に示す
ように、既設覆工物Ｃ１表面から突出する管状アンカー
材１の頭部１Ｈに対して、アンカー挿通孔１０ａを有す
る支圧板１０を通し、次いでそのアンカー材頭部１Ｈ周
面に形成されたネジ部１Ｎ（図１１には示していない）
にテンションナット１１を螺合させ締付ける。これによ
り、テンションナット１１がアンカー材１を介して地山
ＢＧに反力を取りつつ、支圧板１０を既設覆工物Ｃ１表
面に圧接させる。かくして、管状アンカー材頭部１Ｈを
既設覆工物Ｃ１表面に対して定着させるとともに、地山
ＢＧと既設覆工物Ｃ１とに跨って固定された管状アンカ
ー材１に作用する緊張力によって、地山ＢＧと既設覆工
物Ｃ１とを強固に一体化することができる。(Tension fixing step of tubular anchor material) When the hardening material G1 is hardened by the first injection, as shown in FIG. 11, the head 1H of the tubular anchor material 1 protruding from the surface of the existing lining C1. Through a support plate 10 having an anchor insertion hole 10a, and then a screw portion 1N formed on the peripheral surface of the anchor material head 1H (not shown in FIG. 11).
And tighten the tension nut 11. As a result, the tension plate 11 presses the support plate 10 against the surface of the existing lining C1 while taking a reaction force against the ground BG via the anchor material 1. Thus, the head 1H of the tubular anchor material is fixed to the surface of the existing lining C1, and the ground acting on the tubular anchor 1 fixed across the ground BG and the existing lining C1 is ground. The mountain BG and the existing lining C1 can be firmly integrated.
【００３１】なお、本例ではアンカー材１を緊張するこ
ととしたが、過度の緊張力が既設覆工物Ｃ１の空洞部Ｈ
を有する部分に作用すると、当該部分が破壊することが
想定される。したがって、テンションナット１１を締め
付け過ぎず、単にアンカー材頭部１Ｈが既設構造物Ｃ１
表面に接する程度でも良い。In this embodiment, the anchor member 1 is tensioned. However, excessive tension is applied to the hollow portion H of the existing lining C1.
It is assumed that when acting on a portion having Therefore, the tension nut 11 is not excessively tightened, and the anchor material head 1H is simply attached to the existing structure C1.
It may be in contact with the surface.
【００３２】（新規覆工工程）次に、図１２に示すよう
に、既設覆工物Ｃ１表面を新たに覆工し、新規覆工物Ｃ
２を構築する。新規覆工においては、アンカー材頭部１
Ｈが突出しているのを埋め殺すために、図示例のように
モルタル類を用いた吹き付け工法を採用するのが好まし
い。また、特に吹き付けの際には、次述する第２の注入
のために、管状アンカー材１の基端面の開口部１Ｃにキ
ャップ１２（ゴム製が好適）を嵌めておき、このキャッ
プ１２の基端部が露出するように、新規吹き付けを行う
のが好ましい。しかし他のコンクリートブロック等によ
る覆工を行っても良い。(New Covering Step) Next, as shown in FIG. 12, the surface of the existing covering C1 is newly covered,
Build 2. For new lining, the anchor material head 1
It is preferable to adopt a spraying method using a mortar as shown in the illustrated example in order to fill in the protrusion of H. In particular, at the time of spraying, a cap 12 (preferably made of rubber) is fitted into the opening 1C of the base end surface of the tubular anchor material 1 for the second injection described below. It is preferable to perform a new spray so that the end is exposed. However, lining with another concrete block or the like may be performed.
【００３３】（第２の注入工程）新規覆工が完了したな
らば、図１３に示すように、硬化材を、緊張定着されて
いる管状アンカー材１内およびアンカー材１の基端側部
分の吐出口ＢＨ１〜ＢＨ３を通して、既設覆工物Ｃ１背
面と地山ＢＧ表面との間の空洞部Ｈに対して注入充填す
る。(Second Injection Step) When the new lining is completed, as shown in FIG. 13, the hardening material is removed from the tensioned and fixed tubular anchor material 1 and the base end portion of the anchor material 1. The cavity H between the back surface of the existing lining C1 and the surface of the ground BG is injected and filled through the discharge ports BH1 to BH3.
【００３４】図示例では、前述キャップ１２を新規覆工
物Ｃ２表面側から取り外して、新規覆工物Ｃ２表面側か
らその内部に埋め殺されたアンカー材１の基端面開口部
１Ｃに連通する注入孔１３を形成する。しかる後、前述
の第２のパッカー装置５０（もちろん、第１のパッカー
装置５を用いても良い。）を用い、その注入管部８を新
規覆工物Ｃ２の注入孔１３に挿入するとともに、パッカ
ー部材５Ｐを張出させ注入孔１３の口元の隙間を塞いだ
上で硬化材の注入を行う。In the illustrated example, the cap 12 is removed from the front side of the new wrapping C2, and the injection is conducted from the front side of the new lining C2 to the base end face opening 1C of the anchor material 1 embedded therein. A hole 13 is formed. Then, using the above-mentioned second packer device 50 (of course, the first packer device 5 may be used), the injection pipe portion 8 is inserted into the injection hole 13 of the new lining C2, and After the packer member 5P is extended to close the gap at the mouth of the injection hole 13, the hardening material is injected.
【００３５】この際、複数あるアンカー材１の基端側吐
出口ＢＨ１〜ＢＨ３のいずれか（図示例ではＢＨ３）
が、既設覆工物Ｃ１背面と地山ＢＧ表面との間の空洞部
Ｈと略同じ深さ方向位置にくるので、主にその基端側吐
出口ＢＨ３から空洞部Ｈに対して、ならびに主に他の基
端側吐出口ＢＨ１，…ＢＨ２，…からアンカー材１外面
とアンカー孔内面ＡＨ１との隙間Ｓ１における前述第１
の注入により注入しなかった残部に対する注入充填が行
われる。またこの際、通常の場合には、図中Ｇ２２とし
て示すように注入硬化材は隙間Ｓ１および空洞部Ｈ周囲
の背面地山ＢＧ内にも浸透する。At this time, one of the plurality of base end side discharge ports BH1 to BH3 of the anchor member 1 (BH3 in the illustrated example).
Comes in the same depth direction as the cavity H between the back surface of the existing lining C1 and the surface of the ground BG, and therefore, mainly from the base end side discharge port BH3 to the cavity H. , BH2,..., BH2,... In the gap S1 between the outer surface of the anchor member 1 and the inner surface AH1 of the anchor hole.
Injection filling is performed for the remaining portion that has not been injected by the injection. At this time, in a normal case, the injection hardening material also penetrates into the back ground BG around the gap S1 and the cavity H as indicated by G22 in the drawing.
【００３６】（後処理）必要に応じて、前述第２の注入
に際して使用した、新規覆工物Ｃ２表面の前述キャップ
１２により形成された残孔１３にモルタル類Ｍを充填
し、新規覆工物Ｃ２表面が孔のない平坦な面となるよう
にコテ仕上げをする。(Post-treatment) If necessary, mortars M are filled in the residual holes 13 formed by the cap 12 on the surface of the new lining material C2 used for the second injection, and Finish ironing so that the C2 surface becomes a flat surface without holes.
【００３７】＜第２の実施形態＞次に、前述排水管の挿
入設置例を図１５に示した。地盤を切取りまたは盛土に
よってできた人工的な法面が風雨などによって崩壊する
ことを防ぐために、ブロックを並設したり、モルタルを
吹き付けたりして法面覆工物Ｃ３を構築するとともに、
その覆工物Ｃ３を貫通する複数の排水管１００，…を高
さ方向位置を異ならせて構築している。この排水管１０
０は、基端側貫通孔１００Ｈ，…の数が異なる以外は、
前述のアンカー材と同様の構成を有するものである。１
００Ｂは先端ビットを示し、図示しないがこれに先端貫
通孔が形成されている。かかる排水管１００，…を設け
る場合には、例えば法面覆工を行っておき、前述のアン
カー材の削孔挿入工程および第１の注入工程と同様にし
て排水管１００，…の削孔挿入ならびに管体先端部の硬
化材注入による定着を行うか、あるいは、覆工に先だっ
て、前述の管体削孔挿入工程および第１の注入工程と同
様にして、排水管１００，…を地山ＢＧ内に削孔挿入す
るとともにその先端部を地山ＢＧに定着し、しかる後、
この排水管１００，…の突出基端部を埋めないように、
法面に覆工を行う。Ｇ３は、排水管１００，…の定着に
あたり排水管１００内を介してその先端部から注入した
硬化材を示している。かくして、背面地山ＢＧ内に含ま
れている水は、排水管１００，…を介して、覆工物Ｃ３
表側に図中矢印で示すように排出されるようになる。<Second Embodiment> Next, FIG. 15 shows an example of insertion and installation of the drain pipe. In order to prevent the artificial slope made by cutting the ground or embankment from collapsing due to wind and rain, etc., along with constructing a slope slope lining C3 by lining up blocks or spraying mortar,
A plurality of drainage pipes 100 penetrating the lining C3 are constructed at different height positions. This drain pipe 10
0 is the same except that the number of base end side through holes 100H,.
It has the same configuration as the above-mentioned anchor material. 1
00B denotes a tip bit, which is not shown and has a tip through hole formed therein. When the drain pipes 100,... Are provided, for example, slope lining is performed, and the drilling of the drain pipes 100,. , And prior to lining, drainage pipes 100,... Are ground BG in the same manner as in the above-described pipe hole insertion step and the first injection step. The tip is fixed to the ground BG, and after that,
.. So as not to fill the protruding base end of the drainage pipes 100,.
Lining the slope. G3 indicates a hardening material injected from the distal end portion through the inside of the drainage pipe 100 when the drainage pipes 100 are fixed. Thus, the water contained in the back ground BG flows through the drainage pipes 100,.
It will be discharged to the front side as shown by the arrow in the figure.
【００３８】＜その他＞ （イ）他方、本発明では、管体の自削孔挿入に先だって
予備削孔を行い、管体挿入予定位置に下孔を形成してお
くことができる。この場合、管体による自削孔の削孔径
よりも大径の孔を削孔しておくのが好ましい。かかる予
備削孔を行うと、予備削孔と管体の自削孔挿入とを行う
ので二度手間になるものの、その後の管体の自削孔によ
る挿入が容易になる。また、予備削孔を行ったのに、管
体挿入前に挿入孔が多少崩壊してしまっていたりするこ
とが良くあることについては前述したが、本発明では管
体を自削孔により挿入するので、そのような場合にも従
来例のように管体を挿入できないことは実質的になく、
円滑な挿入が可能である。<Others> (A) On the other hand, in the present invention, preliminary drilling is performed prior to insertion of a self-cutting hole in a tube, and a pilot hole can be formed at a position where the tube is to be inserted. In this case, it is preferable to drill a hole having a diameter larger than the diameter of the self-drilling hole formed by the pipe. When the preliminary drilling is performed, the preliminary drilling and the insertion of the self-drilling hole of the tube are performed twice, which is troublesome, but the subsequent insertion of the tube by the self-drilling hole becomes easy. In addition, although the preliminary drilling was performed, it has been described above that the insertion hole is often slightly collapsed before inserting the tube, but in the present invention, the tube is inserted by the self-drilling hole. Therefore, even in such a case, there is substantially no case where the tube body cannot be inserted as in the conventional example,
Smooth insertion is possible.
【００３９】（ロ）上記例では、アンカー材１の先端部
固定ならびにアンカー材１とアンカー孔ＡＨとの隙間Ｓ
１充填のための注入（第１の注入）と、既設覆工物Ｃ１
背面の空洞部Ｈ充填のための注入（第２の注入）とを二
回に分けて行っている。しかし、本発明はこれに限定さ
れず、例えば前述第１の注入において、先端吐出口Ｐ
Ｈ，…ならびに基端側吐出口ＢＨ１〜ＢＨ３の両方から
硬化材を吐出させ、それら両対象部位への注入を同時的
に行い、アンカー材を地山に定着させることもできる。(B) In the above example, the distal end portion of the anchor member 1 is fixed and the gap S between the anchor member 1 and the anchor hole AH is set.
1. Injection for filling (first injection) and existing lining C1
The injection for filling the cavity H on the back surface (second injection) is performed twice. However, the present invention is not limited to this. For example, in the above-described first injection, the tip discharge port P
H,... And the base end side discharge ports BH1 to BH3, the hardening material is discharged, and simultaneously injected into both of the target portions, so that the anchor material can be fixed to the ground.
【００４０】（ハ）本発明では、管体の挿入対象部位へ
の定着に際し、上記例のように管体（アンカー材１）内
を介しての硬化材の注入により行う必要はなく、本発明
の範囲において他の公知の方法により、管体先端部を地
山に定着させることができる。(C) In the present invention, it is not necessary to inject the hardening material through the inside of the tube (anchor material 1) as in the above-described example when fixing the tube to the insertion target site. The tip of the tubular body can be fixed to the ground by another known method in the range of (1).
【００４１】[0041]
【発明の効果】以上のとおり、本発明によれば、管体の
挿入を容易かつ円滑に行うことができるようになり、も
って作業能率の向上を図ることができる。As described above, according to the present invention, the tube can be inserted easily and smoothly, and the working efficiency can be improved.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明に係る、アンカー材およびエア供給用内
管を示す、縦断面図である。FIG. 1 is a longitudinal sectional view showing an anchor material and an air supply inner pipe according to the present invention.
【図２】アンカー材にエア供給用内管を取付けた状態を
示す、縦断面図である。FIG. 2 is a longitudinal sectional view showing a state where an air supply inner pipe is attached to an anchor member.
【図３】自削孔工程を示す、一部縦断面図である。FIG. 3 is a partial vertical sectional view showing a self-drilling step.
【図４】エア供給用内管の他の例を示す、縦断面図およ
び要部拡大図である。FIG. 4 is a longitudinal sectional view and a main part enlarged view showing another example of the air supply inner pipe.
【図５】地削孔工程終了後の状態を示す、一部縦断面図
である。FIG. 5 is a partial longitudinal sectional view showing a state after a ground drilling step is completed.
【図６】第１の注入工程を示す、一部縦断面図である。FIG. 6 is a partial longitudinal sectional view showing a first injection step.
【図７】第１のパッカー装置を示す、一部縦断面図であ
る。FIG. 7 is a partial vertical sectional view showing the first packer device.
【図８】そのパッカー膨出状態を示す、一部縦断面図で
ある。FIG. 8 is a partial longitudinal sectional view showing the packer swelling state.
【図９】図８の要部拡大図である。FIG. 9 is an enlarged view of a main part of FIG. 8;
【図１０】第２のパッカー装置を示す、一部縦断面図で
ある。FIG. 10 is a partial vertical sectional view showing a second packer device.
【図１１】管状アンカー材の緊張定着工程を示す、一部
縦断面図である。FIG. 11 is a partial longitudinal sectional view showing a tension fixing step of the tubular anchor member.
【図１２】新規覆工工程を示す、一部縦断面図である。FIG. 12 is a partial longitudinal sectional view showing a new lining process.
【図１３】第２の注入工程を示す、一部縦断面図であ
る。FIG. 13 is a partial longitudinal sectional view showing a second injection step.
【図１４】仕上げ工程を示す、一部縦断面図である。FIG. 14 is a partial longitudinal sectional view showing a finishing step.
【図１５】第２の実施形態を示す概略縦断面図である。FIG. 15 is a schematic longitudinal sectional view showing a second embodiment.
【符号の説明】 １…管状アンカー材、ＢＨ１〜ＢＨ３…基端側吐出口、
ＰＨ…先端吐出口、３…エア供給用内管、５…第１のパ
ッカー装置、５０…第２のパッカー装置、９…ワンタッ
チ操作手段、Ｃ１…既設覆工物、Ｃ２…新規覆工物、Ｂ
Ｇ…地山。[Description of Signs] 1 ... tubular anchor material, BH1 to BH3 ... proximal end discharge port,
PH: tip discharge port, 3: inner pipe for air supply, 5: first packer device, 50: second packer device, 9: one-touch operation means, C1: existing lining, C2: new lining, B
G: Ground mountain.
【手続補正２】[Procedure amendment 2]
【補正対象書類名】図面[Document name to be amended] Drawing
【補正対象項目名】図４[Correction target item name] Fig. 4
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図４】 FIG. 4
【手続補正３】[Procedure amendment 3]
【補正対象書類名】図面[Document name to be amended] Drawing
【補正対象項目名】図９[Correction target item name] Fig. 9
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図９】 FIG. 9
【手続補正４】[Procedure amendment 4]
【補正対象書類名】図面[Document name to be amended] Drawing
【補正対象項目名】図１１[Correction target item name] FIG.
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図１１】 FIG. 11
Claims (7)
入して設置する方法であって、 先端ビットを備えるとともに、前記挿入対象部位へ挿入
しない基端部を除く周壁部分に貫通孔を形成してなる管
体を用いて前記挿入対象部位を削孔し、この削孔によっ
て前記管体を少なくともその前記貫通孔形成部分まで前
記挿入対象部位へ挿入し設置することを特徴とする、管
体の挿入設置方法。1. A method for inserting and installing a tubular body into an object to be inserted while leaving a base end thereof, comprising a tip bit and a peripheral wall portion excluding a base end that is not inserted into the insertion target site. The insertion target site is drilled using a tube having a through hole formed therein, and the drill is inserted into the insertion target site at least up to the through hole forming portion and installed by this drilling. How to insert and install the tube.
先端部と、この先端部および前記挿入対象部位へ挿入し
ない基端部を除く基端側周壁部分とにそれぞれ形成され
ており、 前記削孔に際し、削孔エアを、前記管体内を通して前記
管体先端部の貫通孔のみから吹出させつつ削孔を行う、
請求項１記載の管体の挿入設置方法。2. The through hole is formed in a distal end portion of the tubular body including the distal end bit, and a proximal end side peripheral wall portion excluding the distal end portion and a proximal end portion that is not inserted into the insertion target site. At the time of the drilling, drilling is performed while blowing drilling air only through the through-hole at the distal end of the tubular body through the tubular body.
A method for inserting and installing a tubular body according to claim 1.
先端部と、この先端部および前記挿入対象部位へ挿入し
ない基端部を除く基端側周壁部分とにそれぞれ形成され
ており、 前記削孔に際し、前記管体内にエア供給用内管を挿入
し、かつこのエア供給用内管を前記管体先端部の貫通孔
にのみ連通させた状態で、削孔エアを、このエア供給用
内管を通して前記管体先端部の貫通孔のみから吹出させ
つつ削孔を行う、請求項１記載の管体の挿入設置方法。3. The through hole is formed in a distal end portion of the tubular body including the distal end bit and a proximal end peripheral wall portion excluding the distal end portion and a proximal end portion that is not inserted into the insertion target site. At the time of the drilling, an air supply inner pipe is inserted into the pipe body, and the drilling air is supplied to the air supply pipe in a state where the air supply inner pipe is communicated only with the through hole at the distal end of the pipe body. 2. The method for inserting and installing a pipe according to claim 1, wherein the drilling is performed while blowing through only a through hole at the tip of the pipe through an internal pipe.
を通して前記先端部の貫通孔および基端側周壁部分の貫
通孔の少なくとも一方から吐出させて、少なくとも吐出
硬化材を前記管体外面とその挿入孔壁との隙間に注入充
填して、前記管体を前記挿入対象部位に対して定着さ
せ、 しかる後に、前記注入した硬化材が硬化する前に、圧気
を、前記管体内を通して前記基端側周壁部分の貫通口の
みから吹出させる、請求項２または３記載の管体の挿入
設置方法。4. After the tube is inserted, a hardening material is discharged through at least one of the through hole at the distal end portion and the through hole at the base side peripheral wall portion through the tube body, and at least the discharged hardening material is discharged through the pipe. The gap between the outer surface of the body and the wall of the insertion hole is injected and filled, and the tube is fixed to the insertion target site. Thereafter, before the injected hardening material is cured, the compressed air is blown into the inside of the tube. 4. The method of inserting and installing a tubular body according to claim 2, wherein the air is blown out only from a through-hole of the base-side peripheral wall portion through a through hole. 5.
置される管体であって、 先端ビットを備えるとともに、挿入対象部位へ挿入しな
い基端部を除く周壁部分に貫通孔を形成してなることを
特徴とする管体。5. A tube which is installed by being inserted into a site to be inserted while leaving a base end portion, wherein the tube is provided with a tip bit, and a through hole is formed in a peripheral wall portion excluding a base end which is not inserted into the site to be inserted. A tubular body characterized by being formed.
先端部と、この先端部および前記挿入対象部位へ挿入し
ない基端部を除く基端側周壁部分とにそれぞれ形成され
ており、 前記管体内を通して前記管体先端部の貫通孔のみから削
孔エアを吹出させる、削孔エア供給手段を備えたことを
特徴とする管体。6. The through hole is formed at a distal end portion of the tubular body including the distal end bit, and at a proximal end peripheral wall portion excluding the distal end portion and a proximal end portion that is not inserted into the insertion target site, A pipe body provided with drilling air supply means for blowing drilling air only through the through hole at the distal end of the pipe body through the pipe body.
入された、前記管体先端部の貫通孔にのみ連通するエア
供給用内管である、請求項６記載の管体。7. The pipe body according to claim 6, wherein said drilling air supply means is an air supply inner pipe inserted into said pipe body and communicating only with a through hole at a front end portion of said pipe body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07907599A JP3382873B2 (en) | 1999-03-24 | 1999-03-24 | How to insert the tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07907599A JP3382873B2 (en) | 1999-03-24 | 1999-03-24 | How to insert the tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000273855A true JP2000273855A (en) | 2000-10-03 |
| JP3382873B2 JP3382873B2 (en) | 2003-03-04 |
Family
ID=13679783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07907599A Expired - Lifetime JP3382873B2 (en) | 1999-03-24 | 1999-03-24 | How to insert the tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3382873B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018017110A (en) * | 2016-07-13 | 2018-02-01 | 岡本 俊仁 | Method and work vehicle for drilling hole for rock bolt |
-
1999
- 1999-03-24 JP JP07907599A patent/JP3382873B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018017110A (en) * | 2016-07-13 | 2018-02-01 | 岡本 俊仁 | Method and work vehicle for drilling hole for rock bolt |
| JP7071797B2 (en) | 2016-07-13 | 2022-05-19 | 俊仁 岡本 | Drilling method and drilling work vehicle for lock bolt holes |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3382873B2 (en) | 2003-03-04 |
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