JPS5526355A - Circular pillar hole continuous drilling method and its device - Google Patents

Circular pillar hole continuous drilling method and its device

Info

Publication number
JPS5526355A
JPS5526355A JP9842978A JP9842978A JPS5526355A JP S5526355 A JPS5526355 A JP S5526355A JP 9842978 A JP9842978 A JP 9842978A JP 9842978 A JP9842978 A JP 9842978A JP S5526355 A JPS5526355 A JP S5526355A
Authority
JP
Japan
Prior art keywords
hole
drilled
shaft
drilling
guide shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP9842978A
Other languages
Japanese (ja)
Inventor
Mitsuhiro Kunito
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.)
Seiko Kogyo Co Ltd
Original Assignee
Seiko Kogyo Co Ltd
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 Seiko Kogyo Co Ltd filed Critical Seiko Kogyo Co Ltd
Priority to JP9842978A priority Critical patent/JPS5526355A/en
Publication of JPS5526355A publication Critical patent/JPS5526355A/en
Pending legal-status Critical Current

Links

Landscapes

  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)

Abstract

PURPOSE: To facilitate drilling, by keeping a new hole at accurate positional relationship without damaging a hole previously drilled by inserting a guide shaft, which does not revolve, into the hole previously dfilled while drilling earch and sand by means of a drilling shaft.
CONSTITUTION: A guide shaft 2, which does not rotate, and a drilling shaft 3, which drills revolving, are mounted to a drilling machine 1. A guide plate 9 is installed to the guide shaft 2. The guide shaft 2, which does not revolve, is inserted into a hole 5 previously drilled while earth and sand are drilled by rotating the drilling shaft 3, and a new hole 5a is drilled. Positional relationship between the hole beforehand drilled and the new hole 5a becomes accurate because holes are drilled by means of the drilling shaft 3 while the guide shaft 2 enters into the hole 5 beforehand drilled at that time. Since the guide shaft 2 does not revolve, the hole 5 drilled is not damaged as compared to the case when the shaft 2 is rotated.
COPYRIGHT: (C)1980,JPO&Japio
JP9842978A 1978-08-11 1978-08-11 Circular pillar hole continuous drilling method and its device Pending JPS5526355A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9842978A JPS5526355A (en) 1978-08-11 1978-08-11 Circular pillar hole continuous drilling method and its device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9842978A JPS5526355A (en) 1978-08-11 1978-08-11 Circular pillar hole continuous drilling method and its device

Publications (1)

Publication Number Publication Date
JPS5526355A true JPS5526355A (en) 1980-02-25

Family

ID=14219557

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9842978A Pending JPS5526355A (en) 1978-08-11 1978-08-11 Circular pillar hole continuous drilling method and its device

Country Status (1)

Country Link
JP (1) JPS5526355A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60181488A (en) * 1984-02-29 1985-09-17 吉澤石灰工業株式会社 Construction of slit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50111821A (en) * 1974-02-12 1975-09-02
JPS5266106U (en) * 1975-11-11 1977-05-16

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50111821A (en) * 1974-02-12 1975-09-02
JPS5266106U (en) * 1975-11-11 1977-05-16

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60181488A (en) * 1984-02-29 1985-09-17 吉澤石灰工業株式会社 Construction of slit

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