NONDESTRUCTIVE GEOLOGICAL SURVEY METHOD AND APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a nondestructive geological survey method and an apparatus not impairing advantages of a previously proposed technology and overcoming various disadvantages due to provision of an inner container. SOLUTION: In the method, a pressure bulkhead 1 is installed so as to closely bring its opening 5 into contact with the ground, a system 2 for depressurizing within the bulkhead sucks and depressurizes air within the pressure bulkhead 1 and a fluid sample such as air and water under the ground is collected and surveyed. A suction pipe 3 for penetrating the pressure bulkhead 1 is installed within the pressure bulkhead 1. The opening 13 at its tip closely contacts the ground G. The fluid sample is sucked and collected by the suction pipe 3 connected to a sample suction system 4. COPYRIGHT: (C)2004,JPO&NCIPI