JPH02101206A - Pavement around manhole and cutting device therefor - Google Patents

Pavement around manhole and cutting device therefor

Info

Publication number
JPH02101206A
JPH02101206A JP63254378A JP25437888A JPH02101206A JP H02101206 A JPH02101206 A JP H02101206A JP 63254378 A JP63254378 A JP 63254378A JP 25437888 A JP25437888 A JP 25437888A JP H02101206 A JPH02101206 A JP H02101206A
Authority
JP
Japan
Prior art keywords
manhole
arm
nozzle
around
road surface
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
Application number
JP63254378A
Other languages
Japanese (ja)
Other versions
JP2641145B2 (en
Inventor
Shinichi Tsubakimori
信一 椿森
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP63254378A priority Critical patent/JP2641145B2/en
Publication of JPH02101206A publication Critical patent/JPH02101206A/en
Application granted granted Critical
Publication of JP2641145B2 publication Critical patent/JP2641145B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Road Paving Structures (AREA)
  • Road Repair (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Abstract

PURPOSE:To facilitate removal of a manhole frame by annularly cutting the manhole wall surface below the surface where the manhole frame is located before removing the frame to separate the frame and surrounding pavement. CONSTITUTION:Keeping an arm support member 6 provided at the tip of a movable link 5 on the center line of a manhole 7, an arm rotary shaft 9 is driven with a motor 8. In the middle portion and lower portion of the shaft 9 are disposed respectively a 1st arm 11 and a 2nd arm 12. To the tip of the arms 11 and 12 are connected respectively a 1st nozzle 14 and a 2nd nozzle 16 via a joint 13 capable of extending and contracting. The nozzles 14 and 16 are respectively connected to a superhigh pressure pump unit 18 via a superhigh pressure coil 17 and to an abrasive tank unit 20 via an abrasive hose 19. Pavement 4 and the manhole wall 2 around the manhole 7 are cut with water jet from the nozzles 14 and 16.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、マンホール枠の取外しを伴うマンホール周囲
の舗装工法及びそれに使用される舗装工法用切断装置に
関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a paving method around a manhole that involves removing a manhole frame, and a cutting device for the paving method used therein.

〔従来の技術] 特公昭61−33938号公報に、マンホール周囲の舗
装路面を円形状に切断する工程及び舗装路面の切断工程
の後にマンホール枠なその周囲の舖装版と共に一体的に
取外す工程を含むマンホール周囲の舗装工法が開示され
、その場合におけるマンホール枠及びその周囲の舖装版
の一体的取り外し方法として、マンホール枠内側に架橋
するように係合させた棒材をワイヤロープを介して油圧
で引き上げる方法が例示されている。また、マンホール
周囲の舗装路面を円形状に切断する方法として、特公昭
61−52283号公報に開示されるように、円筒状ビ
ットをマンホール中心に垂設したシャフトの回りに回転
させるようにした路面円形切断機が実用されている。
[Prior Art] Japanese Patent Publication No. 61-33938 discloses a process of cutting the paved road surface around the manhole into a circular shape, and a process of integrally removing the manhole frame and the surrounding plate after the cutting process of the paved road surface. A method of paving around manholes is disclosed, and in this case, as a method for integrally removing the manhole frame and the surrounding paving slab, a bar engaged in a bridging manner inside the manhole frame is hydraulically connected via a wire rope. An example is given of how to pull it up. In addition, as a method of cutting the paved road surface around a manhole into a circular shape, as disclosed in Japanese Patent Publication No. 61-52283, a method for cutting the paved road surface around a manhole is to cut the paved road surface into a circular shape by rotating a cylindrical bit around a shaft suspended from the center of the manhole. Circular cutting machines are in practical use.

方、実開昭59−193679号公報に、マンホール枠
及びその周囲の舖装版をマンホール壁におけるくさび体
の打込みによってマンホール枠の据付面やレベル調整材
層から剥離させ、引上げを容易にするマンホール枠剥離
機が開示されている。
On the other hand, Japanese Utility Model Application Publication No. 59-193679 discloses a manhole in which the manhole frame and the surrounding plate are peeled off from the installation surface of the manhole frame and the leveling material layer by driving a wedge body into the manhole wall, thereby making it easier to pull up the manhole frame. A frame stripping machine is disclosed.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

マンホール枠及びその周囲の舖装版の一体的取り外しに
上記マンホール枠剥離機のくさび作用による剥離を利用
することは効果的であるが、剥離させるべき固着面積が
大であったり、その固着力が強い場合は、きわめて強力
な打込み力を要する上に剥離に伴う衝撃が大きくなる等
の問題があった。
It is effective to use the wedge action of the manhole frame peeling machine described above to remove the manhole frame and the surrounding covering plate in one piece, but the sticking area to be peeled is large or the sticking force is too high. If it is strong, there are problems such as an extremely strong driving force is required and the impact associated with peeling becomes large.

本発明の目的は、マンホール枠及びその周囲の舖装版の
一体的取り外しを容易にするマンホール周囲の舗装工法
及び舗装工法用切断装置を提供することにある。
An object of the present invention is to provide a method for paving around a manhole and a cutting device for the paving method, which facilitates the integral removal of the manhole frame and the surrounding plate.

〔課題を解決するための技術手段〕[Technical means to solve the problem]

本発明に係るマンホール周囲の舗装工法は、マンホール
周囲の舗装路面を円形状に切断する工程及び舗装路面の
切断工程の後にマンホール枠をその周囲の舖装版と共に
一体的に取外す工程を含むマンホール周囲の舗装工法に
おいて、前記マンホール枠の取外し工程の餌にマンホー
ル枠据付面以下のマンホール壁即ちマンホール枠据付面
以下にある壁面を半径方向に環状に切断することを特徴
とするものである。上記の円形状切断や環状切断は、各
々舗装路面やマンホール壁に対して傾斜した方向に行な
われてもよい。なお、本発明におけるマンホールは、ハ
ンドホールの概念も包含する。
The method for paving around a manhole according to the present invention includes a step of cutting the paved road surface around the manhole into a circular shape, and a step of integrally removing the manhole frame together with the surrounding paving plate after the step of cutting the paved road surface. This paving method is characterized in that the manhole wall below the manhole frame installation surface, that is, the wall surface below the manhole frame installation surface, is cut into a ring shape in the radial direction as bait for the manhole frame removal process. The above-mentioned circular cutting and annular cutting may be performed in a direction oblique to the paved road surface or the manhole wall, respectively. Note that the manhole in the present invention also includes the concept of a handhole.

この舗装工法において、マンホール周囲の舗装路面及び
マンホール壁を、アブレーシブウォータジェット、即ち
研磨材を混入したつオータジェットによって同時に、若
しくは相前後して好適に切断することができる。舗装路
面やマンホール壁を構成するアスファルトやコンクリー
ト、レンガ等は、2000〜3000Kgf/cm2.
或はそれ以上の超高圧水に珪砂、ガーネットその他の研
磨材を混入してノズルから噴射させてなるアブレーシブ
ウォータジェットにより、20〜40cm、或はそれ以
上の深さに切断することが可能である。
In this paving method, the paved road surface around the manhole and the manhole wall can be suitably cut simultaneously or one after the other by an abrasive water jet, that is, an autojet mixed with an abrasive. Asphalt, concrete, bricks, etc. that make up paved roads and manhole walls have a pressure of 2000 to 3000 Kgf/cm2.
Alternatively, it is possible to cut to a depth of 20 to 40 cm or more using an abrasive water jet, which is made by mixing silica sand, garnet, or other abrasive materials in ultra-high pressure water and spraying it from a nozzle. It is.

上記マンホール周囲の舗装工法には、超高圧水に研磨材
を混入してノズルから噴射させるようにしたアブレーシ
ブウォータジェット切断装置において、マンホール周囲
の舗装路面に向けられる第一ノズルと、マンホール壁に
向けられる第二ノズルと、第一ノズル及び第二ノズルを
各々支持する第一アーム及び第二アームと、第一アーム
及び第二アームを各々水平面内で回転可能に支持するア
ーム支持体と、アーム支持体をマンホール中心軸上に保
持する支持体固定手段と、第一アーム及び第二アームを
アーム支持体を中心に回転させるアーム駆動手段と、第
一ノズル及び第二ノズルに超高圧水を供給する超高圧水
供給手段と、第一ノズル及び第二ノズルに研磨材を供給
する研磨材供給手段とを備えたことを特徴とするウォー
タジェット切断装置を好適に使用することができる。
The above-mentioned method of paving around manholes involves using an abrasive water jet cutting device that mixes abrasive material in ultra-high pressure water and sprays it from a nozzle. a second nozzle oriented toward the target; a first arm and a second arm that support the first nozzle and the second nozzle, respectively; and an arm support that rotatably supports the first arm and the second arm, respectively, in a horizontal plane; A support fixing means for holding the arm support on the central axis of the manhole, an arm driving means for rotating the first arm and the second arm around the arm support, and supplying ultra-high pressure water to the first nozzle and the second nozzle. A water jet cutting device characterized by being equipped with an ultra-high pressure water supply means and an abrasive supply means that supplies an abrasive to the first nozzle and the second nozzle can be suitably used.

この切断装置において、第一ノズル及び第二ノズルを、
アーム支持体の回りに各々複数個、対称に配置すること
ができる。
In this cutting device, the first nozzle and the second nozzle are
A plurality of each can be arranged symmetrically around the arm support.

〔作 用〕 マンホール周囲の舗装路面を円形状に切断すると同時に
、若しくは相餌後して、マンホール枠据付面以下のマン
ホール壁を半径方向に環状に切断することにより、マン
ホール枠及びその周囲の舖装版は周囲の舗装や壁体から
完全に若しくは殆ど完全に分離される。なお、切り残し
等のために分離が完全でないときは、必要に応じて既述
のようなマンホール枠剥離機を併用してもよい。
[Operation] At the same time as or after cutting the paved road surface around the manhole into a circular shape, the manhole wall below the manhole frame installation surface is cut into a circular shape in the radial direction. The printing plate is completely or almost completely separated from the surrounding pavement and walls. Note that if separation is not complete due to uncut parts, etc., a manhole frame peeling machine as described above may be used in combination as necessary.

舗装路面の円形状切断をアブレーシブウオー々ジェット
によって行なう場合、舗装路面の切断面は、舗装路面の
表面付近では円滑であるが、ある程度深い所ではウォー
タジェットの噴射径の広がりに起因して凹凸になり、表
面積が増大する。
When cutting a paved road surface into a circular shape using an abrasive water jet, the cut surface of the paved road surface is smooth near the surface of the paved road surface, but at a certain depth, it becomes rough due to the widening of the spray diameter of the water jet. It becomes uneven and the surface area increases.

これに対して、従来の円筒状ビットを使用する場合、舗
装路面の切断面は、舗装路面の表面から底面に至るまで
円滑であり、またビット先端が、傾斜し、或は凹凸にな
った採石層の上部に達したところで、ビットのチップの
摩耗を防ぐために切断を停止する必要があり、時として
切り残しを生じる。
On the other hand, when using a conventional cylindrical bit, the cut surface of the paved road surface is smooth from the surface of the paved road surface to the bottom surface, and the tip of the bit is slanted or uneven. Once the top of the layer is reached, the cut must be stopped to prevent wear on the tip of the bit, sometimes resulting in uncut edges.

また、マンホール壁の環状切断をアブレーシブウォータ
ジェットによって行なう場合、そのノズルは円盤状ブレ
ード等に比べ°Cきわめて小さいので、狭いマンホール
内部で容易に周回させることができる。舗装路面の円形
状切断やマンホール壁の環状切断に際して、各ノズルは
、アームを介して回転軸の回りに回動させてもよく、ま
たリング状軌道に沿って回動させることもできる。
Furthermore, when cutting a manhole wall into an annular shape using an abrasive water jet, the nozzle has a much smaller °C than a disk-shaped blade, so it can be easily circulated inside a narrow manhole. When cutting a paved road surface into a circular shape or a manhole wall into an annular shape, each nozzle may be rotated around a rotation axis via an arm, or may be rotated along a ring-shaped track.

一方1本発明に係るマンホール周囲の舗装工法用切断装
置では、支持体固定手段によりアーム支持体をマンホー
ル中心軸上に保持した状態で、アーム駆動手段により第
一アーム及び第二アームをアーム支持体を中心に回転さ
せると、第一ノズルがマンホール周囲の舗装路面に沿っ
て回動すると共に第二ノズルがマンホール壁に沿って回
動する。この場合、第一ノズル及び第・ニノズルを、ア
ーム支持体の回りに各々複数個、対称に配置すると、各
第一ノズル及び第二ノズルの回動角を小さくすることが
できる。
On the other hand, in the cutting device for paving around manholes according to the present invention, while the arm support is held on the manhole center axis by the support fixing means, the first arm and the second arm are moved to the arm support by the arm driving means. When rotated around the manhole, the first nozzle rotates along the paved road surface around the manhole, and the second nozzle rotates along the manhole wall. In this case, by arranging a plurality of first nozzles and a plurality of second nozzles symmetrically around the arm support, the rotation angle of each first nozzle and second nozzle can be made small.

第一ノズル及び第二ノズルは、超高圧水供給手段から供
給される超高圧水に研磨材供給手段から供給される研磨
材を混合してなるアブレーシブウォータジェットを噴射
し、各々マンホール周囲の舗装路面を円形状に切断する
と共にマンホール壁を半径方向に環状に切断する。
The first nozzle and the second nozzle spray an abrasive water jet made by mixing ultra-high pressure water supplied from the ultra-high pressure water supply means with abrasive material supplied from the abrasive material supply means, and spray the abrasive water jet around the manhole. The paved road surface is cut into a circular shape, and the manhole wall is also cut into a circular shape in the radial direction.

上記切断後は、従来と同様に、マンホール枠及びその周
囲の舖装版を油圧等によって一体的に引き上げると共に
取り外し、マンホール枠据付基礎の構築及びレベル調整
、マンホール枠の据付、舗装材の投入、転圧等を行ない
、舗装工法を完了する。
After the above cutting, as in the past, the manhole frame and the surrounding plate are lifted up and removed as one piece using hydraulic pressure, etc., the foundation for installing the manhole frame is constructed and the level is adjusted, the manhole frame is installed, and the paving material is put in. Perform compaction, etc., and complete the paving method.

〔実施例〕〔Example〕

第1図は、本発明の実施例の要部断面図であり、同図に
おいて、マンホール枠(1)がマンホール壁(2)のレ
ベル調整層(3)上に据え付けらね、舗装路面(4)が
マンホール枠(1)周囲を囲繞している。
FIG. 1 is a sectional view of a main part of an embodiment of the present invention, in which a manhole frame (1) is not installed on a level adjustment layer (3) of a manhole wall (2), ) surrounds the manhole frame (1).

支持体固定手段である可動リンク(5)が重機(図示を
省略する)から延設され、アーム支持体(6)が可動リ
ンク(5)先端に設けられると共にマンホール(7)中
心軸上に保持され、さらにアーム駆動手段であるモータ
(8)がアーム支持体(6)に縦方向に搭載されると共
にアーム回転軸(9)がモータ回転軸(10)に連結さ
れている。
A movable link (5) serving as a support fixing means is extended from a heavy machine (not shown), and an arm support (6) is provided at the tip of the movable link (5) and is held on the central axis of the manhole (7). Further, a motor (8) serving as arm driving means is mounted vertically on the arm support (6), and the arm rotation shaft (9) is connected to the motor rotation shaft (10).

4体の第一・アーム(11)が互いに90度離れてアー
ム回転軸(9)の中間部に突設されると共に第二アーム
(12)が各第一アーム(11)に対応してアーム回転
軸(9)のF部に突設され(各々1体のみを図示する)
、アーム回転軸(9)と各第一アーム(11)及び第二
アーム(12)は各々伸縮継手(13)を介して長さの
調節が可能である。なお、4体の第一アーム(11)及
び/又は4体の第二アーム(12)はアーム回転軸(9
)に沿って軸線方向に移動調節可能であってもよい。ま
た、アーム回転!(9)の中間部又は下端部が軸受を介
して支持されてもよい。
Four first arms (11) are provided 90 degrees apart from each other and protrude from the middle of the arm rotation shaft (9), and second arms (12) correspond to each first arm (11). Projected from the F part of the rotating shaft (9) (only one of each is shown)
The length of the arm rotation shaft (9) and each of the first arm (11) and the second arm (12) can be adjusted through expansion joints (13). In addition, the four first arms (11) and/or the four second arms (12) are connected to the arm rotation axis (9).
) may be adjustable for axial movement along. Also, arm rotation! The intermediate portion or lower end portion of (9) may be supported via a bearing.

第一ノズル(14)が各第一アーム(11)の先端に、
鉛直面内で変角可能にスイベルジヨイント(15)を介
して、また第二ノズル(16)が各第二アーム(12)
の先端に各々連結され、各スイベルジヨイント(15)
及び第二ノズル(16)は超高圧コイル(又は超高圧ホ
ース)(17)を介して超高圧水供給手段である超高圧
ポンプユニット(18)に連結され、また各第一ノズル
(14)及び第二ノズル(16)はアブレーシブホース
(19)を介して研磨材供給手段である研磨材タンクユ
ニット(20)に連結される。゛各伸縮継手(13)や
スイベルジヨイント(15)等の調整により、第一ノズ
ルく14)はマンホール(7)周囲の舗装路面(4)に
傾斜して向けられ、第二ノズル(16)はマンホール壁
(2)に水平に向けられる。
A first nozzle (14) at the tip of each first arm (11),
A second nozzle (16) is connected to each second arm (12) via a swivel joint (15) so that the angle can be changed in a vertical plane.
each swivel joint (15)
and the second nozzle (16) are connected to an ultra-high pressure pump unit (18) which is ultra-high pressure water supply means via an ultra-high pressure coil (or ultra-high pressure hose) (17), and each of the first nozzles (14) and The second nozzle (16) is connected to an abrasive tank unit (20), which is an abrasive supply means, via an abrasive hose (19). By adjusting each expansion joint (13), swivel joint (15), etc., the first nozzle (14) is directed at an angle toward the paved road surface (4) around the manhole (7), and the second nozzle (16) is directed horizontally to the manhole wall (2).

、上記の構成において、各第一アーム(11)及び第二
アーム(12)をモータ(8)により90度を若干越え
る角度、例えば100度だけ回動させ、必要に応じて往
復回動させると、マンホール(7)周囲の舗装路面(4
)及びマンホール壁(2)は、各々4体の第一ノズル(
14,)及び4体の第二ノズル(16)から噴射された
アブレーシブウォータジェットによって、前者は一点鎖
線の方向に、後者は二点鎖線の方向に全周にわたって完
全に切断される。
In the above configuration, each of the first arm (11) and the second arm (12) is rotated by an angle slightly over 90 degrees, for example, 100 degrees, by the motor (8), and rotated back and forth as necessary. , the paved road surface around the manhole (7) (4)
) and the manhole wall (2) each have four first nozzles (
14,) and the four second nozzles (16), the former is completely cut in the direction of the dashed-dotted line, and the latter is completely cut in the direction of the dashed-double-dotted line over its entire circumference.

〔発明の効果〕〔Effect of the invention〕

以上のように、本発明に係るマンホール周囲の舗装工法
によれば、マンホール枠及びその周囲の舖装版は周囲の
舗装や壁体から完全に若しくは殆ど完全に分離されるの
で、その一体的取り外しを容易に行なうことができる。
As described above, according to the method of paving around a manhole according to the present invention, the manhole frame and the surrounding wall are completely or almost completely separated from the surrounding pavement and walls, so that they can be removed integrally. can be done easily.

また、その取り外し後におけるマンホール壁の断面は、
従来のように凹凸のある剥離面と異なり、比較的平坦な
切断面を構成するので、マンホール枠据付のための基礎
の構築及びレベル調整も容易に行なうことができる。
In addition, the cross section of the manhole wall after its removal is
Since the cut surface is relatively flat, unlike the conventional peeling surface which is uneven, construction of the foundation for installing the manhole frame and level adjustment can be easily performed.

上記のおいて、舗装路面の円形・状切断をアブレーシブ
ウォータジェットによって行なう場合、地中における傾
斜し、或は凹凸になった採石層も最後まで完全に切断す
ることができ、さらに舗装路面の切断面は、ある程度深
い所で凹凸になり、表面積が増大するので、後に充填さ
れる舗装材との接着性が向上する。
In the above case, when cutting the paved road surface in a circular shape using an abrasive water jet, it is possible to completely cut the sloping or uneven quarry layer underground, and furthermore, the paved road surface can be cut completely. The cut surface becomes uneven at a certain depth, increasing the surface area, which improves the adhesion with the paving material that will be filled later.

また、マンホール壁の環状切断をアブレーシブクォータ
ジェットによって行なう場合、小さなノズルを狭いマン
ホール内部で容易に周回させることができるので、円盤
状ブレード等による切断に比べて作業性がよい。
Further, when cutting a manhole wall into an annular shape using an abrasive quarter jet, a small nozzle can be easily circulated inside a narrow manhole, so the work efficiency is better than cutting with a disc-shaped blade or the like.

一方、本発明に係るマンホール周囲の舗装工法用切断装
置では、第一ノズルをマンホール周囲′の舗装路面に沿
って回動させると共に第二ノズルをマンホール壁に沿っ
て回動させることにより、アブレーシブウォータジェッ
トによって舗装路面及びマンホール壁を同時に、若しく
は相前後して切断することができ、安全且つ能率的であ
る。
On the other hand, in the cutting device for paving around manholes according to the present invention, the first nozzle is rotated along the paved road surface around the manhole, and the second nozzle is rotated along the manhole wall. The shive water jet can cut the paved road surface and the manhole wall simultaneously or one after the other, which is safe and efficient.

その場合、第一ノズル及び第二ノズルをアーム支持体の
回りに各々複数個、対称に配置すると、各第一ノズル及
び第二ノズルの回動角を小さくすることができるので、
切断速度を増加させることが可能である。
In that case, if a plurality of first nozzles and a plurality of second nozzles are arranged symmetrically around the arm support, the rotation angle of each first nozzle and second nozzle can be made small.
It is possible to increase the cutting speed.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は、本発明の実施例の要部断面図である。 〈主要符号の説明〉 1・・・マンホール枠、   2−・・マンホール壁、
  4・・・舗装路面、 5・・・可動リンク(支持体
固定手段)、   S−・・アーム支持体、  8・・
・モータ(アーム駆動手段)、   11−・・第一ア
ーム、  12・・・第二アーム、   14−・・第
一ノズル、  16・・・第二ノズル、   18−・
・超高圧ポンプユニット(超高圧水供給手段)、  2
0−研磨材タンクユニット(研磨材供給手段) 以−ト
FIG. 1 is a sectional view of a main part of an embodiment of the present invention. <Explanation of main symbols> 1... Manhole frame, 2-... Manhole wall,
4... Paved road surface, 5... Movable link (support fixing means), S-... Arm support, 8...
・Motor (arm driving means), 11--First arm, 12--Second arm, 14--First nozzle, 16--Second nozzle, 18--
・Ultra high pressure pump unit (ultra high pressure water supply means), 2
0- Abrasive tank unit (abrasive material supply means)

Claims (4)

【特許請求の範囲】[Claims] (1)マンホール周囲の舗装路面を円形状に切断する工
程及び舗装路面の切断工程の後にマンホール枠をその周
囲の舖装版と共に一体的に取外す工程を含むマンホール
周囲の舗装工法において、前記マンホール枠の取外し工
程の前にマンホール壁を半径方向に環状に切断すること
を特徴とするマンホール周囲の舗装工法。
(1) In a method of paving around a manhole, which includes a step of cutting the paved road surface around the manhole into a circular shape, and a step of integrally removing the manhole frame together with the surrounding covering plate after the step of cutting the paved road surface, the manhole frame is A method for paving around manholes, which is characterized by cutting the manhole wall into a radial ring shape before the removal process.
(2)マンホール周囲の舗装路面及びマンホール壁をア
ブレーシブウォータジェットによって切断する、請求項
1記載のマンホール周囲の舗装工法。
(2) The method for paving around manholes according to claim 1, wherein the paved road surface and manhole walls around the manhole are cut by an abrasive water jet.
(3)超高圧水に研磨材を混入してノズルから噴射させ
るようにしたアブレーシブウォータジェット切断装置に
おいて、マンホール周囲の舗装路面に向けられる第一ノ
ズルと、マンホール壁に向けられる第二ノズルと、第一
ノズル及び第二ノズルを各々支持する第一アーム及び第
二アームと、第一アーム及び第二アームを各々水平面内
で回転可能に支持するアーム支持体と、アーム支持体を
マンホール中心軸上に保持する支持体固定手段と、第一
アーム及び第二アームをアーム支持体を中心に回転させ
るアーム駆動手段と、第一ノズル及び第二ノズルに超高
圧水を供給する超高圧水供給手段と、第一ノズル及び第
二ノズルに研磨材を供給する研磨材供給手段とを備えた
ことを特徴とするマンホール周囲の舗装工法用切断装置
(3) In an abrasive water jet cutting device that mixes abrasive material with ultra-high pressure water and sprays it from a nozzle, the first nozzle is directed toward the paved road surface around the manhole, and the second nozzle is directed toward the manhole wall. , a first arm and a second arm that support the first nozzle and the second nozzle, respectively, an arm support that rotatably supports the first arm and the second arm in a horizontal plane, and an arm support that supports the manhole center. A support fixing means for holding on the shaft, an arm driving means for rotating the first arm and the second arm around the arm support, and an ultra-high pressure water supply for supplying ultra-high pressure water to the first nozzle and the second nozzle. 1. A cutting device for use in paving around manholes, comprising: a means for supplying abrasive material to a first nozzle and a second nozzle.
(4)第一ノズル及び第二ノズルを、アーム支持体の回
りに各々複数個、対称に配置した、請求項3記載のマン
ホール周囲の舗装工法用切断装置。
(4) The cutting device for paving around manholes according to claim 3, wherein a plurality of first nozzles and a plurality of second nozzles are arranged symmetrically around the arm support.
JP63254378A 1988-10-09 1988-10-09 Paving method around manhole and cutting equipment for paving method Expired - Lifetime JP2641145B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63254378A JP2641145B2 (en) 1988-10-09 1988-10-09 Paving method around manhole and cutting equipment for paving method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63254378A JP2641145B2 (en) 1988-10-09 1988-10-09 Paving method around manhole and cutting equipment for paving method

Publications (2)

Publication Number Publication Date
JPH02101206A true JPH02101206A (en) 1990-04-13
JP2641145B2 JP2641145B2 (en) 1997-08-13

Family

ID=17264153

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63254378A Expired - Lifetime JP2641145B2 (en) 1988-10-09 1988-10-09 Paving method around manhole and cutting equipment for paving method

Country Status (1)

Country Link
JP (1) JP2641145B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002044477A1 (en) * 2000-12-01 2002-06-06 Hanex Road Co., Ltd. Steel cover-less manhole and method of constructing the manhole
KR102266422B1 (en) * 2020-10-07 2021-06-18 (주)옥련건설 Waterjet cutting apparatus for manhole repair

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102065087B1 (en) * 2017-09-26 2020-03-02 안경섭 A manhole repair equipment having a variable support type cutting device and a lifting device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002044477A1 (en) * 2000-12-01 2002-06-06 Hanex Road Co., Ltd. Steel cover-less manhole and method of constructing the manhole
KR102266422B1 (en) * 2020-10-07 2021-06-18 (주)옥련건설 Waterjet cutting apparatus for manhole repair

Also Published As

Publication number Publication date
JP2641145B2 (en) 1997-08-13

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