The measurement of soil water tension in a hydrologic study of waste disposal site design

Technical Report · Wed Feb 01 04:00:00 EST 1989

DOI:https://doi.org/10.2172/6302455· OSTI ID:6302455

Nyhan, J.; Drennon, B.

Commercially available differential pressure transducers, tensiometers and a data acquisition system were combined to study soil water tension changes with time within two trench cap designs used for shallow land burial (SLB) of waste materials. Apparent diurnal variations in soil water tension measured with this system in these field plots are evaluated relative to field variations in temperature, atmospheric pressure and soil water content. Isolated variable experiments were then performed in the field and in the laboratory to evaluate the measurement of soil water tension with the acquisition system. A background tensiometer was used to measure the temperature- and soil water-induced effects independent of soil matric potential, and was evaluated under field conditions. The reliability of soil water tension data collected in the field is discussed, and future research needs for tensiometry are identified. 21 refs., 41 figs.

• Research Organization: Los Alamos National Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6302455
• Report Number(s): LA-11460-MS; ON: DE89009688
• Country of Publication: United States
• Language: English

Related Subjects

052002* -- Nuclear Fuels-- Waste Disposal & Storage
053000 -- Nuclear Fuels-- Environmental Aspects
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
DATA ACQUISITION SYSTEMS
FIELD TESTS
GROUND DISPOSAL
GROUND WATER
HYDROGEN COMPOUNDS
HYDROLOGY
LOW-LEVEL RADIOACTIVE WASTES
MANAGEMENT
MATERIALS
MEASURING INSTRUMENTS
OXYGEN COMPOUNDS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE MANAGEMENT
RADIOACTIVE WASTES
SOILS
TEMPERATURE DEPENDENCE
TENSIOMETERS
TESTING
TRANSDUCERS
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES
WATER