JPS641893A - Forward excavation method by earth pressure type shield - Google Patents

Forward excavation method by earth pressure type shield

Info

Publication number
JPS641893A
JPS641893A JP15480687A JP15480687A JPS641893A JP S641893 A JPS641893 A JP S641893A JP 15480687 A JP15480687 A JP 15480687A JP 15480687 A JP15480687 A JP 15480687A JP S641893 A JPS641893 A JP S641893A
Authority
JP
Japan
Prior art keywords
earth pressure
water
pressure chamber
soil
expansive
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
JP15480687A
Other languages
Japanese (ja)
Other versions
JPH011893A (en
Inventor
Nobuhiko Kimura
Keiji Iso
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.)
Kidoh Construction Co Ltd
Original Assignee
Kidoh Construction 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 Kidoh Construction Co Ltd filed Critical Kidoh Construction Co Ltd
Priority to JP62-154806A priority Critical patent/JPH011893A/en
Priority claimed from JP62-154806A external-priority patent/JPH011893A/en
Publication of JPS641893A publication Critical patent/JPS641893A/en
Publication of JPH011893A publication Critical patent/JPH011893A/en
Pending legal-status Critical Current

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  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

PURPOSE: To safely and positively carry out forward excavation by filling a water absorptive expansive liquid into a face, an earth pressure chamber, and a conveyor, mixing and agitating the same, then carrying out forward excavation while forming spherical gel among soil particles and generating a counteractive earth pressure, and at the same time discharging the soil.
CONSTITUTION: An excavation plate 2 is rotated by a driving machine 20, a shield machine is moved forward to excavate a face of the natural ground, and excavated soil is collected into a earth pressure chamber 7. At the same time, a water absorptive expansive liquid is forcedly fed by a pump 15, which is filled from a face portion jet orifice 5 and an earth pressure chamber jet orifice 6. Next, the excavated soil and the expansive water in the earth pressure chamber 7 are uniformly mixed and agitated by a mixing blade 4, and an absorptive polymer in the expansive liquid is expanded while absorbing ground water, etc. Subsequently, the excavated soil fills the interior of the earth pressure chamber 7, which is then conveyed backward by a screw 22 while generating an earth pressure which counteracts the face earth pressure and water pressure. Further, a valve 13 is opened to charge the expansive liquid from a filling orifice 16, and the resultant liquid and soil are agitated by the screw 22 to form spherical gel, whereby water cut-off performance and fluidity within a conveyor 21 are enhanced.
COPYRIGHT: (C)1989,JPO
JP62-154806A 1987-06-22 Earth pressure shield excavation method Pending JPH011893A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62-154806A JPH011893A (en) 1987-06-22 Earth pressure shield excavation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62-154806A JPH011893A (en) 1987-06-22 Earth pressure shield excavation method

Publications (2)

Publication Number Publication Date
JPS641893A true JPS641893A (en) 1989-01-06
JPH011893A JPH011893A (en) 1989-01-06

Family

ID=

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57108394A (en) * 1980-12-23 1982-07-06 Kajima Corp Shielded excavation

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57108394A (en) * 1980-12-23 1982-07-06 Kajima Corp Shielded excavation

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