IN-CHAMBER SAMPLE RECOVERY DEVICE IN SHIELD MACHINE AND SAMPLE RECOVERY METHOD

• Main Authors: MASUDA MASAAKI, NOMOTO KOSUKE, KISHIMOTO KIMITERU, IIJIMA NORIO, OUE SHINGO
• Format: Patent
• Language: English; Japanese
• Published: 10.01.2023
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; LARGE UNDERGROUND CHAMBERS; MEASURING; MINING; PHYSICS; SHAFTS; TESTING; TUNNELS

To provide an in-chamber sample recovery device in a shield machine and a sample recovery method capable of sampling excavated earth and sand over the entire tunnel cross section during tunnel excavation by the shield machine, and capable of appropriately managing a mud additive contained in the exc...