JPS5777724A - Underground excavation method for enlarging lower excavation part of ditch - Google Patents

Underground excavation method for enlarging lower excavation part of ditch

Info

Publication number
JPS5777724A
JPS5777724A JP15298380A JP15298380A JPS5777724A JP S5777724 A JPS5777724 A JP S5777724A JP 15298380 A JP15298380 A JP 15298380A JP 15298380 A JP15298380 A JP 15298380A JP S5777724 A JPS5777724 A JP S5777724A
Authority
JP
Japan
Prior art keywords
excavation
bits
frame
ditch
enlarged
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
JP15298380A
Other languages
Japanese (ja)
Other versions
JPS599699B2 (en
Inventor
Tatsuo Morooka
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.)
Hazama Ando Corp
Original Assignee
Hazama Gumi 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 Hazama Gumi Ltd filed Critical Hazama Gumi Ltd
Priority to JP15298380A priority Critical patent/JPS599699B2/en
Publication of JPS5777724A publication Critical patent/JPS5777724A/en
Publication of JPS599699B2 publication Critical patent/JPS599699B2/en
Expired legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To form an oblique excavation wall surface in a ditch in a steady manner, by a method wherein a plurality of bits are mounted at a frame pivotably secured to a hanging lever, and the frame is pressed against the excavation wall surface by means of a jack 6.
CONSTITUTION: With bits 1 turned, a frame 2 is pushed into soil and sand through the operation of a jack 6, and soil and sand in an estimated excavation spot 10 is scraped by the bits 1 to form a lower enlarged part 10. An enlarged part 16 is formed with an excavating device lifted gradually. After an elarged part 17 is formed in a similar manner, the excavation device, located in an excavating position, is moved sideways to perform an excavation action, which results in forming an excavation enlarged part 18, having a more enlarged excavation part, except spots 15 where the bits 1 can move cover. The horizontal movement of the excavation device excavates the unexcavating spots 15. The gradual vertical movement of the excavation device forms an excavation surface 19.
COPYRIGHT: (C)1982,JPO&Japio
JP15298380A 1980-11-01 1980-11-01 An underground excavation method that enlarges and shapes the lower part of the trench. Expired JPS599699B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15298380A JPS599699B2 (en) 1980-11-01 1980-11-01 An underground excavation method that enlarges and shapes the lower part of the trench.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15298380A JPS599699B2 (en) 1980-11-01 1980-11-01 An underground excavation method that enlarges and shapes the lower part of the trench.

Publications (2)

Publication Number Publication Date
JPS5777724A true JPS5777724A (en) 1982-05-15
JPS599699B2 JPS599699B2 (en) 1984-03-05

Family

ID=15552393

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15298380A Expired JPS599699B2 (en) 1980-11-01 1980-11-01 An underground excavation method that enlarges and shapes the lower part of the trench.

Country Status (1)

Country Link
JP (1) JPS599699B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6531503B2 (en) * 2015-06-11 2019-06-19 株式会社大林組 Water digging drilling equipment

Also Published As

Publication number Publication date
JPS599699B2 (en) 1984-03-05

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