SAMPLING DEVICE WITH LITTLE DISTURBANCE

摘要

PROBLEM TO BE SOLVED: To provide a sampling device with little disturbance capable of easily sampling a sample with little disturbance at a cutting face of a tunnel. SOLUTION: The sampling device with little disturbance is equipped with the front outer pipe 1 excavating a bedrock, the rear outer pipe 2 fixed to the front outer pipe 1, a sample storage pipe 5 storing the sample with litter disturbance, an inner pipe fixing the sample storage pipe 5 thereto and a thrust bearing 12 between a returning block 11 of the inner end section of the rear outer pipe 2 and a receiving block 7 of the rear end face of the inner pipe. COPYRIGHT: (C)2007,JPO&INPIT