Injecting Solutions Into Soils

A method is sometimes required for injecting solutions of radioactive isotopes or other materials into the soil at exact depths and with minimal site disturbance. This can be accomplished precisely, simply, and without contamination by a device similar to the piezometers used by soil scientists. An pointed access tube (1/2 or 3/4 inch iron pipe) is driven into the ground to the desired depth. The point is inserted into the pipe to keep soil from clogging the end (fig. 1). While hardened steel points are required in rocky soils, a large stove bolt has proved entirely satisfactory in light sands. The pipe can be driven by a hammer fabricated from iron pipes, caps, and reducing couplings without the necessity for machine work (fig. 2). By placing lead weights in the head of the hammer, any desired weight can be obtained. Depending upon the length of the pipe to be driven, the sleeve can be unscrewed and replaced with ones of different length as required.

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Author(s): Frank W. Woods

Publication: Tree Planters' Notes - Volume 20, Number 1 (1969)

Volume: 20

Number: 1