JP5400922B2 - Guide device used in a drilling method for drilling a hole in a main pipe embedded in the ground - Google Patents

Guide device used in a drilling method for drilling a hole in a main pipe embedded in the ground Download PDF

Info

Publication number
JP5400922B2
JP5400922B2 JP2012117701A JP2012117701A JP5400922B2 JP 5400922 B2 JP5400922 B2 JP 5400922B2 JP 2012117701 A JP2012117701 A JP 2012117701A JP 2012117701 A JP2012117701 A JP 2012117701A JP 5400922 B2 JP5400922 B2 JP 5400922B2
Authority
JP
Japan
Prior art keywords
main pipe
hole
guide member
pipe
close contact
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2012117701A
Other languages
Japanese (ja)
Other versions
JP2012161915A (en
Inventor
裕之 太田
Original Assignee
長野油機株式会社
裕之 太田
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 長野油機株式会社, 裕之 太田 filed Critical 長野油機株式会社
Priority to JP2012117701A priority Critical patent/JP5400922B2/en
Publication of JP2012161915A publication Critical patent/JP2012161915A/en
Application granted granted Critical
Publication of JP5400922B2 publication Critical patent/JP5400922B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Drilling And Boring (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Description

本発明は、地盤に埋設された本管に枝管を接続するために前記本管に孔を穿つための穿孔方法に用いる案内装置に関する。   The present invention relates to a guide device used in a drilling method for drilling a hole in the main pipe in order to connect a branch pipe to the main pipe embedded in the ground.

地盤に埋設された、上水道、下水道等の本管に枝管を接続するため、前記本管に孔が穿たれる。従来、前記本管に前記孔を穿つとき、まず、前記地盤に地表から前記本管に向けて枝管用孔を掘削し、次に、該枝管用孔内に該枝管用孔と同軸的に鞘管を配置し、その後、前記本管に前記孔を穿つためのコアカッタを該コアカッタが前記本管の外面に到達するまで前記鞘管に挿入し、前記コアカッタにより前記本管に前記孔を穿つ（特許文献１参照）。   In order to connect the branch pipes to the main pipes such as waterworks and sewers buried in the ground, holes are made in the main pipes. Conventionally, when the hole is drilled in the main pipe, first, a branch pipe hole is excavated in the ground from the surface to the main pipe, and then in the branch pipe hole, the sheath is coaxial with the branch pipe hole. A pipe is placed, and then a core cutter for making the hole in the main pipe is inserted into the sheath pipe until the core cutter reaches the outer surface of the main pipe, and the hole is made in the main pipe by the core cutter ( Patent Document 1).

特開平１−２７５９８３号公報Japanese Patent Laid-Open No. 1-275983

ところで、前記本管の実際の位置と設計上の位置との間に誤差があることにより、又は前記枝管用孔の掘削時に施工上の誤差が生じたことにより、前記枝管用孔内に配置された前記鞘管の軸線が前記本管の軸線に向いていないことがある。このため、前記本管に前記孔を穿つとき、前記コアカッタの回転中心を前記本管の軸線に向けることができない。前記コアカッタの回転中心が前記本管の軸線に向いている場合、前記孔の形状が円形になるのに対して、前記コアカッタの回転中心が前記本管の軸線に向いていない場合、前記孔の形状が非円形になる。前記孔の形状が非円形になると、前記孔の形状が円形である場合に比べて、前記孔に固定される前記枝管の端部を前記孔の形状に適合する形状に加工するのが難しくなる。このため、前記枝管の端部の加工に多大な手間と時間とを要し、前記枝管の前記本管への接続を効率的に行うことができない。また、前記枝管の端部を精度良く加工できなかったことにより、前記枝管と前記本管との間に隙間ができ、該隙間を経て地下水が前記本管へ流入するという問題が生じる。   By the way, because there is an error between the actual position of the main pipe and the design position, or because of a construction error when excavating the branch pipe hole, the pipe is disposed in the branch pipe hole. In addition, the axis of the sheath tube may not face the axis of the main tube. For this reason, when the hole is formed in the main pipe, the center of rotation of the core cutter cannot be directed to the axis of the main pipe. When the center of rotation of the core cutter is oriented toward the axis of the main pipe, the shape of the hole is circular, whereas when the center of rotation of the core cutter is not oriented toward the axis of the main pipe, The shape becomes non-circular. When the shape of the hole is non-circular, it is difficult to process the end portion of the branch pipe fixed to the hole into a shape that matches the shape of the hole, compared to the case where the shape of the hole is circular. Become. For this reason, the processing of the end of the branch pipe requires a lot of labor and time, and the branch pipe cannot be efficiently connected to the main pipe. Further, since the end portion of the branch pipe cannot be processed with high accuracy, there is a problem that a gap is formed between the branch pipe and the main pipe, and groundwater flows into the main pipe through the gap.

本発明の目的は、地盤に埋設された本管に孔を穿つためのコアカッタの回転中心を前記本管の軸線に向けることができるようにすることである。   An object of the present invention is to enable the center of rotation of a core cutter for making a hole in a main pipe embedded in the ground to be directed to the axis of the main pipe.

本発明は、中央部に貫通孔を有し、円弧状の断面形状を有するガイド部材の内面を前記本管の外面に密着させ、その密着を確認した後、前記本管に前記孔を穿つためのコアカッタを前記貫通孔を経て前記本管に到達させることにより、前記コアカッタの回転中心を前記本管の軸線に向けることができるようにする。   In the present invention, the inner surface of the guide member having a through hole in the central portion and having an arc-shaped cross section is brought into close contact with the outer surface of the main pipe, and after confirming the close contact, the hole is formed in the main pipe. By making the core cutter reach the main pipe through the through hole, the center of rotation of the core cutter can be directed to the axis of the main pipe.

本発明に係る案内装置を用いることができる穿孔方法は、地盤に埋設された、円形の断面形状を有する本管に枝管を接続するために前記本管に孔を穿つための穿孔方法で、この穿孔方法の一つは、中央部に貫通孔を有し、内面の曲率が前記本管の外面の曲率とほぼ等しい円弧状の断面形状を有するガイド部材を含む案内装置を用意する第１ステップと、前記地盤に地表から前記本管に向けて枝管用孔を掘削する第２ステップと、前記枝管用孔内に該枝管用孔と同軸的に鞘管を配置する第３ステップと、前記案内装置を前記ガイド部材の内面が前記本管の外面に密着するまで前記鞘管に挿入する第４ステップと、前記ガイド部材の内面の前記本管の外面への密着を確認する第５ステップと、前記ガイド部材の内面の前記本管の外面への密着を確認したとき、前記本管に前記孔を穿つためのコアカッタを該コアカッタが前記貫通孔を経て前記本管の外面に到達するまで前記鞘管に挿入する第６ステップと、前記コアカッタにより前記本管に前記孔を穿つ第７ステップとを含む。   A drilling method in which the guide device according to the present invention can be used is a drilling method for drilling a hole in the main pipe in order to connect a branch pipe to the main pipe having a circular cross-sectional shape embedded in the ground. One of the drilling methods is a first step of providing a guide device including a guide member having a through hole in the central portion and having an arc-shaped cross-sectional shape in which the curvature of the inner surface is substantially equal to the curvature of the outer surface of the main pipe. A second step of excavating a branch pipe hole in the ground from the surface toward the main pipe, a third step of arranging a sheath pipe coaxially with the branch pipe hole in the branch pipe hole, and the guide A fourth step of inserting the device into the sheath tube until the inner surface of the guide member is in close contact with the outer surface of the main tube, and a fifth step of confirming the close contact of the inner surface of the guide member with the outer surface of the main tube; Ensure that the inner surface of the guide member is in close contact with the outer surface of the main pipe. A core cutter for drilling the hole in the main pipe is inserted into the sheath pipe until the core cutter reaches the outer surface of the main pipe through the through hole, and the core cutter is used to insert the core cutter into the main pipe. And a seventh step of drilling the hole.

中央部に前記貫通孔を有し、円弧状の断面形状を有する前記ガイド部材の内面を前記本管の外面に密着させるため、前記ガイド部材の内面の前記本管の外面への密着時に前記貫通孔の軸線は前記本管の軸線に向いている。このため、前記ガイド部材の内面の前記本管の外面への密着を確認した後に前記コアカッタを前記貫通孔を経て前記本管の外面に到達させることにより、前記コアカッタの回転中心を前記本管の軸線に向けることができる。   The inner surface of the guide member having the through hole in the central portion and having an arcuate cross-sectional shape is brought into close contact with the outer surface of the main pipe. The hole axis is directed to the main axis. For this reason, after confirming the close contact of the inner surface of the guide member with the outer surface of the main pipe, the core cutter is caused to reach the outer surface of the main pipe through the through hole, so that the center of rotation of the core cutter is adjusted to the main pipe. Can be directed to the axis.

前記案内装置は、前記ガイド部材の内面の前記本管の外面への密着時に前記本管の軸線に平行な平面で見て該軸線と交差する直線状を呈するように一端部及び他端部がそれぞれ前記ガイド部材の相対する２つの領域の一方及び他方に固定された、非密着時に非直線状を呈する表示体を有し、前記第５ステップは、前記表示体が直線状であることを確認する。前記表示体が直線状であることを確認することにより、前記ガイド部材の内面の前記本管の外面への密着を容易に確認することができる。   The guide device has one end portion and the other end portion so that when the inner surface of the guide member is in close contact with the outer surface of the main pipe, the guide member has a linear shape intersecting the axis line when viewed in a plane parallel to the main axis line. Each of the guide members has a display body that is fixed to one and the other of the two opposing areas, and exhibits a non-linear shape when not in close contact, and the fifth step confirms that the display body is linear To do. By confirming that the display body is linear, it is possible to easily confirm the close contact of the inner surface of the guide member with the outer surface of the main pipe.

前記第５ステップに先立ち、前記表示体を撮影するためのＣＣＤカメラと、該ＣＣＤカメラに接続された、前記表示体の映像を表示するためのモニターとを用意すること、前記ＣＣＤカメラを前記鞘管に挿入することを含み、前記第５ステップは、前記ＣＣＤカメラにより前記表示体を撮影すること、前記表示体の映像を前記モニターに表示することを含む。   Prior to the fifth step, a CCD camera for photographing the display body and a monitor connected to the CCD camera for displaying an image of the display body are prepared, and the CCD camera is connected to the sheath. The fifth step includes photographing the display body with the CCD camera and displaying an image of the display body on the monitor.

前記案内装置は、前記貫通孔と整列して前記ガイド部材に取り付けられた筒状部材を有し、前記第６ステップは、前記コアカッタを該コアカッタが前記筒状部材及び前記貫通孔を経て前記本管の外面に到達するまで前記鞘管に挿入することを含む。前記筒状部材は前記コアカッタを前記貫通孔へ案内する。このため、前記コアカッタの前記鞘管への挿入を容易に行うことができる。   The guide device includes a cylindrical member attached to the guide member in alignment with the through hole, and the sixth step includes the core cutter through which the core cutter passes through the cylindrical member and the through hole. Inserting into the sheath tube until it reaches the outer surface of the tube. The cylindrical member guides the core cutter to the through hole. For this reason, the core cutter can be easily inserted into the sheath tube.

前記第５ステップにおいて前記ガイド部材の内面の前記本管の外面への密着を確認しなかったとき、前記第６ステップに先立ち、前記ガイド部材の内面を前記本管の外面から引き離すこと、前記ガイド部材の内面を前記本管の外面に密着させること、前記ガイド部材の内面の前記本管の外面への密着を確認することを、前記ガイド部材の内面の前記本管の外面への密着を確認するまで繰り返すことを含む。   When the inner surface of the guide member is not confirmed to be in close contact with the outer surface of the main pipe in the fifth step, the inner surface of the guide member is separated from the outer surface of the main pipe prior to the sixth step; Check that the inner surface of the guide member is in close contact with the outer surface of the main tube, and that the inner surface of the guide member is in close contact with the outer surface of the main tube, that the inner surface of the guide member is in close contact with the outer surface of the main tube. Including repeating until.

本発明に係る案内装置は、地盤に埋設された、円形の断面形状を有する本管に枝管を接続するために前記本管に孔を穿つための穿孔方法に用いる。前記案内装置は、中央部に貫通孔を有し、内面の曲率が前記本管の外面の曲率とほぼ等しい円弧状の断面形状を有するガイド部材と、該ガイド部材の内面の前記本管の外面への密着時に前記本管の軸線に平行な平面で見て該軸線と交差する直線状を呈するように一端部及び他端部がそれぞれ前記ガイド部材の相対する２つの領域の一方及び他方に固定され、非密着時に非直線状を呈する表示体とを含む。   The guide device according to the present invention is used in a drilling method for drilling a hole in the main pipe in order to connect a branch pipe to the main pipe having a circular cross-sectional shape embedded in the ground. The guide device includes a guide member having a through-hole in a central portion and an arc-shaped cross-sectional shape in which the curvature of the inner surface is substantially equal to the curvature of the outer surface of the main tube, and the outer surface of the main tube on the inner surface of the guide member One end and the other end are fixed to one and the other of the two opposing areas of the guide member, respectively, so as to present a straight line intersecting the axis when viewed in a plane parallel to the main axis. And a display body that exhibits a non-linear shape when not in close contact.

前記案内装置は、前記貫通孔と整列して前記ガイド部材に取り付けられた筒状部材を有する。   The guide device includes a cylindrical member attached to the guide member in alignment with the through hole.

前記表示体は線状又は帯状である。前記表示体は、非伸縮性材料からなるものとすることができ、また伸縮性材料からなるものとすることができる。前記非伸縮性材料は合成樹脂又は布である。前記伸縮性材料はゴムである。   The said display body is linear or strip | belt shape. The display body can be made of a non-stretchable material, and can be made of a stretchable material. The non-stretchable material is a synthetic resin or cloth. The stretchable material is rubber.

本発明によれば、中央部に貫通孔を有し、円弧状の断面形状を有するガイド部材の内面を本管の外面に密着させるため、前記ガイド部材の内面の前記本管の外面への密着時に前記貫通孔の軸線は前記本管の軸線に向いている。このため、前記ガイド部材の内面の前記本管の外面への密着を確認した後に、前記本管に孔を穿つためのコアカッタを前記貫通孔を経て前記本管の外面に到達させることにより、前記コアカッタの回転中心を前記本管の軸線に向けることができる。   According to the present invention, the inner surface of the guide member having a through hole in the central portion and having an arcuate cross-sectional shape is brought into close contact with the outer surface of the main tube. Sometimes the axis of the through hole is directed to the axis of the main. For this reason, after confirming the close contact of the inner surface of the guide member to the outer surface of the main pipe, the core cutter for drilling a hole in the main pipe is made to reach the outer surface of the main pipe through the through hole. The center of rotation of the core cutter can be directed to the axis of the main pipe.

枝管用孔内に鞘管を配置した後の本管の断面図。Sectional drawing of the main pipe | tube after arrange | positioning a sheath pipe in the hole for branch pipes. 枝管用孔内に鞘管を配置した後の本管の斜視図。The perspective view of the main pipe | tube after arrange | positioning a sheath pipe in the hole for branch pipes. 案内装置を鞘管に挿入しているときの本管の断面図。Sectional drawing of a main pipe | tube when inserting the guide apparatus in a sheath pipe. 案内装置を鞘管に挿入しているときの本管の斜視図。The perspective view of the main pipe | tube when inserting the guide apparatus in a sheath pipe. 案内装置を鞘管に挿入した後の本管の断面図。Sectional drawing of the main pipe | tube after inserting a guide apparatus in a sheath pipe. 案内装置を鞘管に挿入した後の本管の斜視図。The perspective view of the main pipe | tube after inserting a guide apparatus in a sheath pipe. ガイド部材の内面の本管の外面への密着を確認しているときの本管の断面図。Sectional drawing of the main pipe | tube when confirming contact | adherence to the outer surface of the main pipe | tube of the inner surface of a guide member. ガイド部材の内面の本管の外面への密着を確認しているときの本管の斜視図。The perspective view of the main when the close_contact | adherence to the outer surface of the main pipe | tube of the inner surface of a guide member is confirmed. 鞘管にコアカッタを挿入しているときの本管の断面図。Sectional drawing of the main pipe | tube when the core cutter is inserted in the sheath pipe. 鞘管にコアカッタを挿入しているときの本管の斜視図。The perspective view of the main pipe | tube when inserting the core cutter into a sheath pipe. コアカッタにより本管に孔を穿つときの本管の断面図。Sectional drawing of a main pipe | tube when making a hole in a main pipe | tube with a core cutter. コアカッタにより本管に孔を穿つときの本管の斜視図。The perspective view of a main when a hole is made in a main with a core cutter. 本管に孔を穿った後の本管の断面図。Sectional drawing of a main pipe after making a hole in the main pipe. 本管に孔を穿った後の本管の斜視図。The perspective view of the main pipe after making a hole in the main pipe. ガイド部材の内面が本管の外面に密着していない状態の本管の断面図。Sectional drawing of the main pipe | tube of the state in which the inner surface of a guide member is not closely_contact | adhered to the outer surface of a main pipe | tube. ガイド部材の内面が本管の外面に密着していない状態の本管の斜視図。The perspective view of the main body in the state where the inner surface of the guide member is not in close contact with the outer surface of the main body. 表示体のガイド部材への取付け方法に関する説明図。Explanatory drawing regarding the attachment method to the guide member of a display body. 表示体の長さの設定方法に関する説明図。Explanatory drawing regarding the setting method of the length of a display body.

図１に示すように、上水道、下水道等の本管１０が地盤１２に埋設されている。本管１０は、コンクリート、プラスチック等からなり、円形の断面形状を有する。本管１０に、塩化ビニルのようなプラスチックからなる枝管（図示せず）を接続するため、本管１０に孔１４が穿たれる（図１３）。   As shown in FIG. 1, a main pipe 10 such as a water supply or a sewer is buried in the ground 12. The main pipe 10 is made of concrete, plastic or the like and has a circular cross-sectional shape. In order to connect a branch pipe (not shown) made of plastic such as vinyl chloride to the main pipe 10, a hole 14 is formed in the main pipe 10 (FIG. 13).

図３、４に示すように、本管１０に孔１４を穿つために案内装置１６を用いる。案内装置１６は、円弧状の断面形状を有するガイド部材１８と、一端部２０及び他端部２２がそれぞれガイド部材１８の相対する２つの領域２４、２６の一方及び他方に固定された線状又は帯状の表示体２８とを含む。   As shown in FIGS. 3 and 4, a guide device 16 is used to make a hole 14 in the main pipe 10. The guide device 16 includes a guide member 18 having an arcuate cross-sectional shape, a linear shape in which one end portion 20 and the other end portion 22 are fixed to one and the other of the two regions 24 and 26 facing each other. A band-shaped display 28.

ガイド部材１８は、金属、プラスチック等からなり、内面３０の曲率が本管１０の外面３２の曲率とほぼ等しく、中央部に貫通孔３４を有する。貫通孔３４は円形の平面形状を有する。ガイド部材１８の内面３０の曲率が本管１０の外面３２の曲率とほぼ等しいため、ガイド部材１８の内面３０は本管１０の外面３２に密着可能である。ガイド部材１８が中央部に貫通孔３４を有するため、ガイド部材１８の内面３０の本管１０の外面３２への密着時に本管１０の軸線に平行な平面で見て貫通孔３４の中心は本管１０の軸線上に位置する。このため、本管１０に孔１４を穿つためのコアカッタ６０（図１１）を貫通孔３４を経て本管１０の外面３２に到達させることにより、コアカッタ６０を本管１０の軸線上へ案内することができ、孔１４の中心が本管１０の軸線からずれることはない。   The guide member 18 is made of metal, plastic, etc., and the curvature of the inner surface 30 is substantially equal to the curvature of the outer surface 32 of the main pipe 10 and has a through hole 34 in the center. The through hole 34 has a circular planar shape. Since the curvature of the inner surface 30 of the guide member 18 is substantially equal to the curvature of the outer surface 32 of the main pipe 10, the inner surface 30 of the guide member 18 can be in close contact with the outer surface 32 of the main pipe 10. Since the guide member 18 has a through-hole 34 in the center, the center of the through-hole 34 is the center when viewed from a plane parallel to the axis of the main pipe 10 when the inner surface 30 of the guide member 18 is in close contact with the outer surface 32 of the main pipe 10. Located on the axis of the tube 10. For this reason, the core cutter 60 for piercing the hole 14 in the main pipe 10 (FIG. 11) reaches the outer surface 32 of the main pipe 10 through the through hole 34, thereby guiding the core cutter 60 on the axis of the main pipe 10. The center of the hole 14 does not deviate from the axis of the main pipe 10.

ガイド部材１８は、図示の例では、八角形の平面形状を有し、ガイド部材１８の前記領域はガイド部材１８の相対する２つの部分２４、２６である。ガイド部材１８の平面形状は、八角形である図示の例に代え、円形、正方形、長方形等とすることができる。ガイド部材１８の平面形状が円形である場合、ガイド部材１８の前記領域はガイド部材１８の周縁部における相対する２つの部分である。ガイド部材１８の平面形状が正方形である場合、ガイド部材１８の前記領域はガイド部材１８の相対する２つの側部である。ガイド部材１８の平面形状が本管１０の軸線と直行する方向に細長い長方形である場合、ガイド部材１８の前記領域はガイド部材１８の相対する２つの端部である。   In the illustrated example, the guide member 18 has an octagonal planar shape, and the region of the guide member 18 is two opposing portions 24 and 26 of the guide member 18. The planar shape of the guide member 18 may be a circle, a square, a rectangle, or the like instead of the illustrated example of an octagon. When the planar shape of the guide member 18 is circular, the region of the guide member 18 is two opposing portions at the peripheral edge of the guide member 18. When the planar shape of the guide member 18 is a square, the region of the guide member 18 is two opposite side portions of the guide member 18. When the planar shape of the guide member 18 is a rectangle elongated in a direction perpendicular to the axis of the main pipe 10, the regions of the guide member 18 are two opposite ends of the guide member 18.

表示体２８の一端部２０及び他端部２２は、図６に示すように、ガイド部材１８の内面３０の本管１０の外面３２への密着時に表示体２８が本管１０の軸線に平行な平面で見て該軸線と交差する直線状を呈するようにそれぞれガイド部材１８の一方の領域２４及び他方の領域２６に固定されている。この固定は、図示の例では、表示体２８が本管１０の軸線に垂直な直線状を呈するようになされているが、これに代え、表示体２８が本管１０の軸線に対して傾斜した直線状を呈するようになされていてもよい。   The one end 20 and the other end 22 of the display body 28 are parallel to the axis of the main tube 10 when the inner surface 30 of the guide member 18 is in close contact with the outer surface 32 of the main tube 10 as shown in FIG. The guide member 18 is fixed to one region 24 and the other region 26 so as to form a straight line intersecting the axis when viewed in a plane. In the example shown in the figure, the fixing is such that the display body 28 has a linear shape perpendicular to the axis of the main pipe 10, but instead the display body 28 is inclined with respect to the axis of the main pipe 10. You may be made to show a linear form.

図１７に示すように、表示体２８は、一端部２０及び他端部２２がそれぞれガイド部材１８の一方の領域２４及び他方の領域２６に密着して配置され、各端部２０、２２が固定手段３６により固定されている。固定手段３６は、ガイド部材１８と反対側で表示体２８に密着して配置された板部材３８と、それぞれが該板部材を貫通し、ガイド部材１８と螺合された２つのねじ４０とからなる。   As shown in FIG. 17, in the display body 28, one end 20 and the other end 22 are arranged in close contact with one region 24 and the other region 26 of the guide member 18, respectively, and the end portions 20 and 22 are fixed. It is fixed by means 36. The fixing means 36 includes a plate member 38 disposed in close contact with the display body 28 on the side opposite to the guide member 18, and two screws 40 that respectively penetrate the plate member and are screwed with the guide member 18. Become.

ガイド部材１８の内面３０の本管１０の外面３２への密着時に表示体２８が本管１０の軸線と交差する直線状を呈するようにするため、表示体２８の長さは、ガイド部材１８の周方向に沿った長さとほぼ等しく、式L=(π×D×θ)/360+2Xにより設定する。ここに、Lは表示体２８の長さであり、Dは本管１０の外径であり、θは、ガイド部材１８の断面においてガイド部材１８の内面３０が規定する円弧の中心角であり（図１８）、Xは、表示体２８の一端部２０及び他端部２２をそれぞれガイド部材１８の一方の領域２４又は他方の領域２６に固定するために表示体２８の一端部２０及び他端部２２のそれぞれに必要とされる長さである。   In order for the display body 28 to exhibit a straight line intersecting the axis of the main pipe 10 when the inner surface 30 of the guide member 18 is in close contact with the outer surface 32 of the main pipe 10, the length of the display body 28 is It is almost equal to the length along the circumferential direction, and is set by the equation L = (π × D × θ) / 360 + 2X. Here, L is the length of the display body 28, D is the outer diameter of the main pipe 10, and θ is the central angle of the arc defined by the inner surface 30 of the guide member 18 in the cross section of the guide member 18 ( 18), X denotes one end 20 and the other end of the display body 28 in order to fix the one end 20 and the other end 22 of the display body 28 to one region 24 or the other region 26 of the guide member 18, respectively. This is the length required for each of 22.

表示体２８は、ガイド部材１８の内面３０が本管１０の外面３２に密着していないときに非直線状を呈している。表示体２８がガイド部材１８の内面３０の本管１０の外面３２への密着時に本管１０の軸線と交差する直線状を呈し、非密着時に非直線状を呈することから、ガイド部材１８の内面３０を本管１０の外面３２に密着させたとき、表示体２８が直線状であることを確認することにより、ガイド部材１８の内面３０が本管１０の外面３２に密着していることを確認することができる。   The display body 28 has a non-linear shape when the inner surface 30 of the guide member 18 is not in close contact with the outer surface 32 of the main pipe 10. Since the display body 28 exhibits a straight line shape that intersects the axis of the main pipe 10 when the inner surface 30 of the guide member 18 is in close contact with the outer surface 32 of the main pipe 10, and exhibits a non-linear shape when not in close contact, the inner surface of the guide member 18. It is confirmed that the inner surface 30 of the guide member 18 is in close contact with the outer surface 32 of the main pipe 10 by confirming that the display body 28 is linear when the 30 is in close contact with the outer surface 32 of the main pipe 10. can do.

表示体２８は、合成樹脂又は布のような非伸縮性材料からなるものとすることができ、例えば合成樹脂製の荷造り用バンドからなるものとすることができる。また、表示体２８は、ゴムのような伸縮性材料からなるものとすることができる。表示体２８が伸縮性材料からなる場合、表示体２８の長さは、ガイド部材１８の内面３０の本管１０の外面３２への密着時に表示体２８が僅かに伸長して前記した式を満たす長さとなる程度に前記した式で求めた長さより短い長さであってもよい。   The display body 28 can be made of a non-stretchable material such as synthetic resin or cloth, and can be made of a packing band made of synthetic resin, for example. Further, the display body 28 can be made of a stretchable material such as rubber. When the display body 28 is made of a stretchable material, the length of the display body 28 satisfies the above-mentioned formula because the display body 28 slightly extends when the inner surface 30 of the guide member 18 is in close contact with the outer surface 32 of the main pipe 10. The length may be shorter than the length obtained by the above-described formula to the extent that it becomes the length.

案内装置１６は、図１７に示したように、貫通孔３４と整列してガイド部材１８に取り付けられた筒状部材４２を有する。筒状部材４２は、金属、プラスチック等からなる。筒状部材４２は、内径がコアカッタ６０の外径とほぼ等しく、コアカッタ６０をガイド部材１８の貫通孔３４へ案内する（図１１、１２）。筒状部材４２は、該筒状部材の径方向に間隔を置かれた２つのフランジ４４を下端部に有する。各フランジ４４は、ガイド部材１８に接触しており、フランジ４４及びガイド部材１８を貫くボルト及びこれに螺合されたナット（図示せず）により、ガイド部材１８に固定されている。   As illustrated in FIG. 17, the guide device 16 includes a cylindrical member 42 that is aligned with the through hole 34 and attached to the guide member 18. The cylindrical member 42 is made of metal, plastic, or the like. The cylindrical member 42 has an inner diameter substantially equal to the outer diameter of the core cutter 60, and guides the core cutter 60 to the through hole 34 of the guide member 18 (FIGS. 11 and 12). The cylindrical member 42 has two flanges 44 at the lower end portion spaced in the radial direction of the cylindrical member. Each flange 44 is in contact with the guide member 18, and is fixed to the guide member 18 by a bolt that penetrates the flange 44 and the guide member 18 and a nut (not shown) screwed into the bolt.

案内装置１６は、さらに、筒状部材４２の上端部に該筒状部材の軸線に関して対称的に取り付けられた複数の導入壁４６と、該導入壁４６間に配置され、筒状部材４２に該筒状部材の径方向に間隔を置いて取り付けられた２つの棒状部材４８とを有する。各導入壁４６は筒状部材４２の内面に対して傾斜した壁面５０を有し、筒状部材４２の軸線を含む断面で見て１つの導入壁４６の壁面５０と他の導入壁４６の壁面５０との間の間隔は筒状部材４２から上方に向けて漸増している。導入壁４６はコアカッタ６０を筒状部材４２内へ導入する。各棒状部材４８は筒状部材４２から上方へ伸びる。棒状部材４８は案内装置１６を鞘管５６に挿入するのに用いる。   The guide device 16 is further disposed between the introduction walls 46 and a plurality of introduction walls 46 that are symmetrically attached to the upper end portion of the cylindrical member 42 with respect to the axis of the cylindrical member. And two rod-shaped members 48 attached at intervals in the radial direction of the cylindrical member. Each introduction wall 46 has a wall surface 50 inclined with respect to the inner surface of the cylindrical member 42, and the wall surface 50 of one introduction wall 46 and the wall surfaces of the other introduction walls 46 when viewed in a cross section including the axis of the cylindrical member 42. The space between the first member 50 and the second member 50 gradually increases upward from the cylindrical member 42. The introduction wall 46 introduces the core cutter 60 into the cylindrical member 42. Each rod-shaped member 48 extends upward from the tubular member 42. The rod-shaped member 48 is used to insert the guide device 16 into the sheath tube 56.

本管１０に孔１４を穿つとき、まず、案内装置１６を用意する。次に、図１に示したように、地盤１２に地表５２から本管１０に向けて枝管用孔５４を掘削する。枝管用孔５４の掘削は、オーガーのような、回転式ビットを有する掘削装置を用いて行う。枝管用孔５４は、図示の例では、地表５２に対して垂直であるが、これに代え、地表５２に対して傾斜していてもよい。   When the hole 14 is bored in the main pipe 10, first, the guide device 16 is prepared. Next, as shown in FIG. 1, a branch pipe hole 54 is excavated in the ground 12 from the ground surface 52 toward the main pipe 10. The excavation of the branch pipe hole 54 is performed using an excavator having a rotary bit such as an auger. In the illustrated example, the branch pipe hole 54 is perpendicular to the ground surface 52, but may instead be inclined to the ground surface 52.

次に、枝管用孔５４内に該枝管用孔と同軸的に鞘管５６を配置する（図１、２）。鞘管５６は、例えば金属からなる。鞘管５６の配置は、枝管用孔５４の掘削後に枝管用孔５４に鞘管５６を挿入することによるものでもよいし、枝管用孔５４を掘削しつつ枝管用孔５４に鞘管５６を挿入することによるものでもよい。   Next, a sheath pipe 56 is disposed coaxially with the branch pipe hole in the branch pipe hole 54 (FIGS. 1 and 2). The sheath tube 56 is made of metal, for example. The arrangement of the sheath pipe 56 may be by inserting the sheath pipe 56 into the branch pipe hole 54 after excavating the branch pipe hole 54, or inserting the sheath pipe 56 into the branch pipe hole 54 while excavating the branch pipe hole 54. It may be by doing.

その後、図３ないし６に示すように、案内装置１６をガイド部材１８の内面３０が本管１０の外面３２に密着するまで鞘管５６に挿入する。ガイド部材１８は中央部に貫通孔３４を有するため、ガイド部材１８の内面３０を本管１０の外面３２に密着させたとき、本管１０の軸線に平行な平面で見て貫通孔３４の中心は本管１０の軸線上に位置する。すなわち貫通孔３４の軸線は本管１０の軸線に向いている。   Thereafter, as shown in FIGS. 3 to 6, the guide device 16 is inserted into the sheath tube 56 until the inner surface 30 of the guide member 18 is in close contact with the outer surface 32 of the main tube 10. Since the guide member 18 has a through hole 34 at the center, when the inner surface 30 of the guide member 18 is brought into close contact with the outer surface 32 of the main pipe 10, the center of the through hole 34 is viewed in a plane parallel to the axis of the main pipe 10. Is located on the axis of the main pipe 10. That is, the axis of the through hole 34 faces the axis of the main pipe 10.

案内装置１６を鞘管５６に挿入するとき、ガイド部材１８の内面３０を本管１０の外面３２に密着させるために棒状部材４８を用いてガイド部材１８を本管１０に押し付ける。ガイド部材１８の貫通孔３４の中心が本管１０の軸線から僅かにずれている場合、すなわちガイド部材１８の内面３０と本管１０の外面３２との間に隙間がある場合、ガイド部材１８を本管１０に押し付けることにより、ガイド部材１８の内面３０を本管１０の外面３２に強制的に密着させることができる。これにより、案内装置１６を、ガイド部材１８の内面３０が本管１０の外面３２に密着する位置へ案内することができる。   When the guide device 16 is inserted into the sheath pipe 56, the guide member 18 is pressed against the main pipe 10 using the rod-like member 48 in order to bring the inner surface 30 of the guide member 18 into close contact with the outer surface 32 of the main pipe 10. When the center of the through hole 34 of the guide member 18 is slightly shifted from the axis of the main pipe 10, that is, when there is a gap between the inner surface 30 of the guide member 18 and the outer surface 32 of the main pipe 10, the guide member 18 is By pressing against the main pipe 10, the inner surface 30 of the guide member 18 can be forcibly brought into close contact with the outer surface 32 of the main pipe 10. Thereby, the guide device 16 can be guided to a position where the inner surface 30 of the guide member 18 is in close contact with the outer surface 32 of the main pipe 10.

図３、４に示したように、ガイド部材１８の内面３０が本管１０の外面３２に密着するまでの間、表示体２８は、弛んでおり、非直線状を呈している。図６に示したように、ガイド部材１８の内面３０が本管１０の外面３２に密着したとき、表示体２８は、本管１０の外面３２に密着し、本管１０の軸線に平行な平面で見て該軸線と交差する直線状を呈する。   As shown in FIGS. 3 and 4, until the inner surface 30 of the guide member 18 comes into close contact with the outer surface 32 of the main pipe 10, the display body 28 is slack and has a non-linear shape. As shown in FIG. 6, when the inner surface 30 of the guide member 18 is in close contact with the outer surface 32 of the main tube 10, the display body 28 is in close contact with the outer surface 32 of the main tube 10 and is a plane parallel to the axis of the main tube 10. As shown in FIG. 2, it forms a straight line intersecting the axis.

その後、表示体２８が直線状であることを確認することにより、ガイド部材１８の内面３０が本管１０の外面３２に密着していることを確認する。表示体２８が直線状であった場合、ガイド部材１８の内面３０は本管１０の外面３２に密着しており、表示体２８が直線状でなかった場合、ガイド部材１８の内面３０は本管１０の外面３２に密着していない。ガイド部材１８の内面３０の本管１０の外面３２への密着を表示体２８が直線状であるか否かにより確認するため、ガイド部材１８の内面３０の本管１０の外面３２への密着の確認が容易である。表示体２８が直線状であることの確認は、目視によるものでもよいし、図７、８に示すように、ＣＣＤカメラ５８を用いるものでもよい。   Thereafter, it is confirmed that the inner surface 30 of the guide member 18 is in close contact with the outer surface 32 of the main pipe 10 by confirming that the display body 28 is linear. When the display body 28 is linear, the inner surface 30 of the guide member 18 is in close contact with the outer surface 32 of the main pipe 10, and when the display body 28 is not linear, the inner surface 30 of the guide member 18 is main pipe. 10 is not in close contact with the outer surface 32. In order to confirm the close contact of the inner surface 30 of the guide member 18 to the outer surface 32 of the main pipe 10 by checking whether or not the display body 28 is linear, the close contact of the inner surface 30 of the guide member 18 to the outer surface 32 of the main pipe 10 is determined. Confirmation is easy. Confirmation that the display body 28 is linear may be made by visual observation or using a CCD camera 58 as shown in FIGS.

ガイド部材１８の内面３０の本管１０の外面３２への密着を確認するためにＣＣＤカメラ５８を用いる場合、予め、表示体２８を撮影するためのＣＣＤカメラ５８と、該ＣＣＤカメラに接続された、表示体２８の映像を表示するためのモニター（図示せず）とを用意する。次に、図７、８に示したように、ＣＣＤカメラ５８を鞘管５６に挿入する。その後、ＣＣＤカメラ５８により表示体２８を撮影し、該表示体の映像を前記モニターに表示することにより、表示体２８が直線状であることを確認する。   When the CCD camera 58 is used to confirm the close contact between the inner surface 30 of the guide member 18 and the outer surface 32 of the main pipe 10, the CCD camera 58 for photographing the display body 28 and the CCD camera are connected in advance. A monitor (not shown) for displaying an image of the display body 28 is prepared. Next, as shown in FIGS. 7 and 8, the CCD camera 58 is inserted into the sheath tube 56. Thereafter, the display body 28 is photographed by the CCD camera 58, and an image of the display body is displayed on the monitor, thereby confirming that the display body 28 is linear.

ガイド部材１８の内面３０の本管１０の外面３２への密着を確認したとき、図９ないし１４に示すように、本管１０に孔１４を穿つためのコアカッタ６０を該コアカッタが筒状部材４２及び貫通孔３４を経て本管１０の外面３２に到達するまで鞘管５６に挿入し、コアカッタ６０により本管１０に孔１４を穿つ。このとき、コアカッタ６０は、導入壁４６により筒状部材４２内へ導入され、該筒状部材により貫通孔３４へ案内される。   When the close contact between the inner surface 30 of the guide member 18 and the outer surface 32 of the main pipe 10 is confirmed, as shown in FIGS. 9 to 14, the core cutter 60 has a cylindrical member 42 for the core cutter 60 for making the hole 14 in the main pipe 10. Then, the tube is inserted into the sheath tube 56 until it reaches the outer surface 32 of the main pipe 10 through the through hole 34, and the hole 14 is made in the main pipe 10 by the core cutter 60. At this time, the core cutter 60 is introduced into the cylindrical member 42 by the introduction wall 46 and is guided to the through hole 34 by the cylindrical member.

図１５、１６に示すように、表示体２８が直線状でなかった場合、ガイド部材１８の内面３０は本管１０の外面３２に密着していない。この場合、すなわちガイド部材１８の内面３０の本管１０の外面３２への密着を確認しなかったとき、ガイド部材１８の内面３０を本管１０の外面３２から引き離し、ガイド部材１８の内面３０を本管１０の外面３２に密着させ、再度、ガイド部材１８の内面３０の本管１０の外面３２への密着を確認する。ガイド部材１８の内面３０の本管１０の外面３２からの引き離し、ガイド部材１８の内面３０の本管１０の外面３２への密着、及びガイド部材１８の内面３０の本管１０の外面３２への密着の確認は、ガイド部材１８の内面３０の本管１０の外面３２への密着を確認するまで繰り返す。ガイド部材１８の内面３０の本管１０の外面３２への密着を確認した後、前記したように、コアカッタ６０を該コアカッタが筒状部材４２及び貫通孔３４を経て本管１０の外面３２に到達するまで鞘管５６に挿入し、コアカッタ６０により本管１０に孔１４を穿つ。   As shown in FIGS. 15 and 16, when the display body 28 is not linear, the inner surface 30 of the guide member 18 is not in close contact with the outer surface 32 of the main pipe 10. In this case, that is, when the close contact between the inner surface 30 of the guide member 18 and the outer surface 32 of the main pipe 10 is not confirmed, the inner surface 30 of the guide member 18 is separated from the outer surface 32 of the main pipe 10 and the inner surface 30 of the guide member 18 is moved. The outer surface 32 of the main pipe 10 is brought into close contact with the inner surface 30 of the guide member 18 again to confirm the close contact with the outer surface 32 of the main pipe 10. The inner surface 30 of the guide member 18 is separated from the outer surface 32 of the main tube 10, the inner surface 30 of the guide member 18 is closely attached to the outer surface 32 of the main tube 10, and the inner surface 30 of the guide member 18 is contacted with the outer surface 32 of the main tube 10. The confirmation of the adhesion is repeated until the adhesion of the inner surface 30 of the guide member 18 to the outer surface 32 of the main pipe 10 is confirmed. After confirming that the inner surface 30 of the guide member 18 is in close contact with the outer surface 32 of the main pipe 10, the core cutter 60 reaches the outer surface 32 of the main pipe 10 through the cylindrical member 42 and the through hole 34 as described above. Until then, the tube is inserted into the sheath tube 56, and the hole 14 is made in the main tube 10 by the core cutter 60.

ガイド部材１８の内面３０の本管１０の外面３２への密着時に貫通孔３４の軸線が本管１０の軸線に向いているため、ガイド部材１８の内面３０の本管１０の外面３２への密着を確認した後にコアカッタ６０を貫通孔３４を経て本管１０の外面３２に到達させることにより、コアカッタ６０の回転中心を前記本管の軸線に向けることができ、本管１０にその外面３２から中心へ向けて孔１４を穿つことができる。   When the inner surface 30 of the guide member 18 is in close contact with the outer surface 32 of the main pipe 10, the axis of the through hole 34 faces the axis of the main pipe 10, so that the inner surface 30 of the guide member 18 is in close contact with the outer surface 32 of the main pipe 10. After confirming the above, the core cutter 60 reaches the outer surface 32 of the main pipe 10 through the through-hole 34, so that the center of rotation of the core cutter 60 can be directed to the axis of the main pipe. A hole 14 can be drilled towards.

１０ 本管
１２ 地盤
１４ 孔
１６ 案内装置
１８ ガイド部材
２０ 一端部
２２ 他端部
２４、２６ 領域
２８ 表示体
３０ 内面
３２ 外面
３４ 貫通孔
４２ 筒状部材
５４ 枝管用孔
５６ 鞘管
５８ ＣＣＤカメラ
６０ コアカッタ DESCRIPTION OF SYMBOLS 10 Main pipe 12 Ground 14 Hole 16 Guide apparatus 18 Guide member 20 One end part 22 Other end part 24, 26 Area 28 Display body 30 Inner surface 32 Outer surface 34 Through-hole 42 Cylindrical member 54 Branch pipe hole 56 Sheath pipe 58 CCD camera 60 Core cutter

Claims (7)

地盤に埋設された、円形の断面形状を有する本管に枝管を接続するために前記本管に孔を穿つための穿孔方法に用いる案内装置であって、中央部に貫通孔を有し、内面の曲率が前記本管の外面の曲率とほぼ等しい円弧状の断面形状を有するガイド部材と、該ガイド部材の内面の前記本管の外面への密着時に前記本管の軸線に平行な平面で見て該軸線と交差する直線状を呈するように一端部及び他端部がそれぞれ前記ガイド部材の相対する２つの領域の一方及び他方に固定され、非密着時に非直線状を呈する表示体とを含む、案内装置。   A guide device used in a drilling method for drilling a hole in the main pipe in order to connect a branch pipe to a main pipe having a circular cross-sectional shape embedded in the ground, and having a through hole in the center portion, A guide member having an arc-shaped cross-sectional shape in which the curvature of the inner surface is substantially equal to the curvature of the outer surface of the main pipe, and a plane parallel to the axis of the main pipe when the inner surface of the guide member is in close contact with the outer surface of the main pipe One end and the other end are fixed to one and the other of the two opposing areas of the guide member so as to exhibit a straight line crossing the axis as viewed, and a display body that exhibits a non-linear shape when not in close contact Including a guide device. 前記貫通孔と整列して前記ガイド部材に取り付けられた筒状部材を有する、請求項１に記載の案内装置。   The guide device according to claim 1, comprising a cylindrical member attached to the guide member in alignment with the through hole. 前記表示体は線状又は帯状である、請求項１に記載の案内装置。   The guide device according to claim 1, wherein the display body is linear or strip-shaped. 前記表示体は非伸縮性材料からなる、請求項１に記載の案内装置。   The guide device according to claim 1, wherein the display body is made of a non-stretchable material. 前記非伸縮性材料は合成樹脂又は布である、請求項４に記載の案内装置。 The guide device according to claim 4 , wherein the non-stretchable material is a synthetic resin or a cloth. 前記表示体は伸縮性材料からなる、請求項１に記載の案内装置。   The guide device according to claim 1, wherein the display body is made of a stretchable material. 前記伸縮性材料はゴムである、請求項６に記載の案内装置。   The guide device according to claim 6, wherein the stretchable material is rubber.
JP2012117701A 2012-05-23 2012-05-23 Guide device used in a drilling method for drilling a hole in a main pipe embedded in the ground Expired - Fee Related JP5400922B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2012117701A JP5400922B2 (en) 2012-05-23 2012-05-23 Guide device used in a drilling method for drilling a hole in a main pipe embedded in the ground

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012117701A JP5400922B2 (en) 2012-05-23 2012-05-23 Guide device used in a drilling method for drilling a hole in a main pipe embedded in the ground

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP2007210663A Division JP5134884B2 (en) 2007-08-13 2007-08-13 Drilling method for drilling a hole in a main pipe embedded in the ground and guide device used therefor

Publications (2)

Publication Number Publication Date
JP2012161915A JP2012161915A (en) 2012-08-30
JP5400922B2 true JP5400922B2 (en) 2014-01-29

Family

ID=46841839

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2012117701A Expired - Fee Related JP5400922B2 (en) 2012-05-23 2012-05-23 Guide device used in a drilling method for drilling a hole in a main pipe embedded in the ground

Country Status (1)

Country Link
JP (1) JP5400922B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102962862A (en) * 2012-12-07 2013-03-13 蚌埠新奥燃气发展有限公司 PE pipe electric melting saddle type direct-through tapper
CN104400091B (en) * 2014-12-01 2017-03-08 江西洪都航空工业集团有限责任公司 Ream frock for non-aqueous planar end surface
CN108115759A (en) * 2017-12-21 2018-06-05 广东德新科技孵化器有限公司 A kind of plate cambered surface perforating device of Furniture manufacturing

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0611442B2 (en) * 1987-05-18 1994-02-16 株式会社福田組 Drilling method of pipe connection hole in small diameter pipe
JP3378339B2 (en) * 1994-03-08 2003-02-17 大阪瓦斯株式会社 Method and apparatus for detecting surface shape of remote object
JP2004338059A (en) * 2003-05-19 2004-12-02 Hitachi Metals Ltd Boring apparatus and supply pipe installation method

Also Published As

Publication number Publication date
JP2012161915A (en) 2012-08-30

Similar Documents

Publication Publication Date Title
JP5400922B2 (en) Guide device used in a drilling method for drilling a hole in a main pipe embedded in the ground
KR101492858B1 (en) apparatus of guide casing for a ground excavator
US20140366977A1 (en) Method for pulling in restoration pipe and restored pipeline
JP5134884B2 (en) Drilling method for drilling a hole in a main pipe embedded in the ground and guide device used therefor
JP7280602B2 (en) Concrete wall forming method for earth retaining
JP6018963B2 (en) Method for constructing gradient correction pipeline and support used therefor
JP3128229U (en) Support material
JP2016141930A (en) Support member of rehabilitation pipe
CN113932760A (en) Rock-fill dam internal deformation monitoring pipeline device and system
EP3087378B1 (en) Adapter for measuring instrument
JP2007138502A (en) Concrete pipe body and jacking method
JP6161370B2 (en) Backing prevention device
WO2016044823A1 (en) Device and method for coupling pipes
KR102054579B1 (en) Apparatus for Non-open Replacement of Underground Pipe
JP2012163498A (en) Separation distance measuring apparatus
JP5736264B2 (en) Exploration device and exploration method
JP2017066836A (en) Core material for earth retaining wall and upper core material removing method
KR101738426B1 (en) Water pipe leak detection device
JP2021059862A (en) Seismic structure for manhole, construction method thereof, and cutting device used to implement construction method
JP6754196B2 (en) Ground resistivity measuring method and ground resistivity measuring device
KR200364270Y1 (en) parts of manhole pipe connection
JP6774104B2 (en) Structure of connecting the base pipe to the manhole and how to connect the base pipe to the manhole
JP2016125533A (en) Method for drilling fixing pipe in pipe regeneration process
JP2000213053A (en) Existing old pipe regenerating construction method, and timbering device therefor method, and blocking member
KR102104710B1 (en) Method for Non-open Replacement of Underground Pipe without Stopping water Supply

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20120523

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20130730

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20130731

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20130902

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20131001

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20131025

R150 Certificate of patent or registration of utility model

Ref document number: 5400922

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees