| 摘要 |
PROBLEM TO BE SOLVED: To provide a soil contamination detecting pipe capable of accurately detecting the existence of oil that contaminates the soil, regardless of the path of infiltration into the soil. SOLUTION: This soil contamination detecting pipe is obtained, by forming a plurality of water collecting holes 3 in a cylindrical body that has a peak head section 1 and opens at the end 2 on the opposite side to the peak head section, over the whole length except the peak head section at a predetermined interval (D), and in the length direction (X). The water collecting holes may be at a positional relation, where the water collecting holes adjacent to each other in the length direction (X) of the cylindrical body do not overlap in the circumferential direction [R] of the cylindrical body. As the positional relation where they do not overlap in the circumferential direction, the water collecting holes adjacent to each other in the length direction of the cylindrical body are separated from each other at the interval of 90° in the circumferential direction. In this case, the water collecting holes, arranged at the interval of 180° in the circumferential direction and in a facing positional relation, may be at the same position in the length direction. COPYRIGHT: (C)2008,JPO&INPIT |
