TY - JOUR
AU - Halihan, Todd
AB - A borehole permeameter is well suited for testing saturated hydraulic conductivity (Ksat) at specific depths in the vadose zone. Most applications of the method involve fine‐grained soils that allow hand auguring of test holes and require a small water reservoir to maintain a constant head. In non‐cohesive gravels, hand‐dug test holes are difficult to excavate, holes are prone to collapse, and large volumes of water are necessary to maintain a constant head for the duration of the test. For coarse alluvial gravels, a direct‐push steel permeameter was designed to place a slotted pipe at a specific sampling depth. Measurements can be made at successive depths at the same location. A 3790 L (1000 gallons) trailer‐mounted water tank maintained a constant head in the permeameter. Head in the portable tank was measured with a pressure transducer and flow was calculated based on a volumetric rating curve. A U.S. Bureau of Reclamation analytical method was utilized to calculate Ksat. Measurements with the permeameter at a field site were similar to those reported from falling‐head tests.
TI - Design and Application of a Direct‐Push Vadose Zone Gravel Permeameter
JF - Ground Water
DO - 10.1111/j.1745-6584.2010.00796.x
DA - 2011-11-01
UR - https://www.deepdyve.com/lp/wiley/design-and-application-of-a-direct-push-vadose-zone-gravel-permeameter-e6Pr3J3GQB
SP - 920
VL - 49
IS - 6
DP - DeepDyve
ER -