EARTH PRESSURE SHIELD EXCAVATOR WITH SAMPLING DEVICE AND EARTH PRESSURE SHIELD CONSTRUCTION METHOD

To provide an earth pressure shield excavator with a sampling device capable of collecting excavated soil in a chamber even during excavation, and an earth pressure shield construction method.SOLUTION: An earth pressure shield excavator 1 with a sampling device includes a through hole 21 passing thr...

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Bibliographic Details
Main Authors TAKIGUCHI TAKAHIRO, NOMOTO YOSHIKAZU
Format Patent
LanguageEnglish
Japanese
Published 21.04.2023
Subjects
EARTH DRILLING
FIXED CONSTRUCTIONS
GALLERIES
LARGE UNDERGROUND CHAMBERS
MINING
SHAFTS
TUNNELS
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Summary:To provide an earth pressure shield excavator with a sampling device capable of collecting excavated soil in a chamber even during excavation, and an earth pressure shield construction method.SOLUTION: An earth pressure shield excavator 1 with a sampling device includes a through hole 21 passing through a partition wall 5, a water stop valve 22 connected to the through hole 21, a sampling tube 23 detachably connected to the water stop valve 22, pressure adjusting means for applying negative pressure to the inside of the sampling tube 23, and a depressurization valve 25 connected to a body of the sampling tube 23. The excavated soil 10 in a chamber 6 can be pulled into the sampling tube 23.SELECTED DRAWING: Figure 2 【課題】掘削中であってもチャンバ内の掘削土を採取できるサンプル採取装置付き土圧式シールド掘削機及び土圧式シールド工法の提供。【解決手段】サンプル採取装置付き土圧式シールド掘削機１は、隔壁５を貫通する貫通孔２１と、貫通孔２１に接続された止水弁２２と、止水弁２２に着脱可能に接続されたサンプル採取管２３と、サンプル採取管２３内に負圧を作用させる圧力調節手段と、サンプル採取管２３の胴体部に接続された圧抜き弁２５とを備え、チャンバ６内の掘削土１０をサンプル採取管２３内に引き込めるようにしている。【選択図】図２
Bibliography:Application Number: JP20210166688