LARGE SCALE UNDERGROUND EXCAVATING METHOD EMPLOYING TREANCH CUT PROCESS

PURPOSE:To improve safety of a landslide protection wall, by a method wherein, after both trench walls of a primary excavation part excavated in a trench shape are supported by a strut, the interior thereof is excavated in an open cut way in a manner that a part adjoining to the primary excavation p...

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Hauptverfasser: OKABE NOBUYOSHI, TAWARA SHINROKU, MIURA MASAO
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Sprache:eng
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creator OKABE NOBUYOSHI
TAWARA SHINROKU
MIURA MASAO
description PURPOSE:To improve safety of a landslide protection wall, by a method wherein, after both trench walls of a primary excavation part excavated in a trench shape are supported by a strut, the interior thereof is excavated in an open cut way in a manner that a part adjoining to the primary excavation part is left as it is. CONSTITUTION:In large scale underground excavation, such as gymnasia, a primary U-shaped excavation part 1 is excavated after landslide protection walls are built inside and outside, and sheet piles 7 and struts 2 prevent against damage due to an earth pressure produced by a bedrock 4. A secondary excavation part 5 for the interior is excavated in an open cut way, and a part, adjoining to the primary excavation part, is caused to remain as an internal landslide protection wall part 6. Further, after foundation concrete 9 is placed in the primary excavation part 1, soil at the internal landslide protection wall part 6 is discharged to complete foundation excavation. This causes the internal landslide protection wall part 6 to counter with the pressure of the bedrock, resulting in the possibility to improve safety of a landslide protection wall.
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CONSTITUTION:In large scale underground excavation, such as gymnasia, a primary U-shaped excavation part 1 is excavated after landslide protection walls are built inside and outside, and sheet piles 7 and struts 2 prevent against damage due to an earth pressure produced by a bedrock 4. A secondary excavation part 5 for the interior is excavated in an open cut way, and a part, adjoining to the primary excavation part, is caused to remain as an internal landslide protection wall part 6. Further, after foundation concrete 9 is placed in the primary excavation part 1, soil at the internal landslide protection wall part 6 is discharged to complete foundation excavation. 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CONSTITUTION:In large scale underground excavation, such as gymnasia, a primary U-shaped excavation part 1 is excavated after landslide protection walls are built inside and outside, and sheet piles 7 and struts 2 prevent against damage due to an earth pressure produced by a bedrock 4. A secondary excavation part 5 for the interior is excavated in an open cut way, and a part, adjoining to the primary excavation part, is caused to remain as an internal landslide protection wall part 6. Further, after foundation concrete 9 is placed in the primary excavation part 1, soil at the internal landslide protection wall part 6 is discharged to complete foundation excavation. This causes the internal landslide protection wall part 6 to counter with the pressure of the bedrock, resulting in the possibility to improve safety of a landslide protection wall.</abstract><oa>free_for_read</oa></addata></record>
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subjects EARTH DRILLING
EMBANKMENTS
EXCAVATIONS
FIXED CONSTRUCTIONS
FOUNDATIONS
GALLERIES
HYDRAULIC ENGINEERING
LARGE UNDERGROUND CHAMBERS
MINING
SHAFTS
SOIL SHIFTING
TUNNELS
UNDERGROUND OR UNDERWATER STRUCTURES
title LARGE SCALE UNDERGROUND EXCAVATING METHOD EMPLOYING TREANCH CUT PROCESS
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