GeoMeasurements by Pulsing TDR Cables and ProbesGeoMeasurements by Pulsing TDR Cables and Probes examines Time Domain Reflectometry (TDR) research and provides information on its use as a robust, reliable, and economical production tool. Common uses for TDR technology include telecommunications and power industries, but the text examines applications such as measurement of moisture of unsaturated soils; detection of fluids for leak and pollution; measurement of water levels for hydrological purposes; measurement of water pressures beneath dams; and deformation and stability monitoring of mines, slopes, and structures. Chapters discuss: The diverse interest and terminology within the TDR community tends to obscure commonalities and the universal physical principles underlying the technology. The authors seek to crystallize the basic principles among the seemingly divergent specialties using TDR technology in geomaterials. By examining varied experiences, GeoMeasurements by Pulsing TDR Cables and Probes provides a synergistic text necessary to unify the field. |
Contents
BASIC PHYSICS | 2 |
MONITORING SOIL MOISTURE | 49 |
15 | 64 |
FIELD EXPERIENCE AND VERIFICATION | 81 |
Nuclear Density Moisture Gauge | 86 |
MONITORING LOCALIZED DEFORMATION | 107 |
FIELD EXPERIENCE AND VERIFICATION | 139 |
MONITORING SOIL DEFORMATION | 169 |
Comparison with Other Technology | 252 |
ELECTRONICS | 267 |
SOFTWARE | 301 |
CSI PC208Datalogger Control and Multiplexing | 310 |
Specialized Software | 314 |
APPENDICES | 333 |
References | 343 |
107 | 347 |
Localized vs General Shear | 178 |
Comparative Performance and Costs | 196 |
MONITORING STRUCTURAL DEFORMATION | 207 |
AIRLIQUID INTERFACES | 235 |
Coaxial cable offers advantages over twisted pair | 241 |
List of Symbols | 369 |
Author Index | 379 |
385 | |
Vendors | 395 |
Other editions - View all
GeoMeasurements by Pulsing TDR Cables and Probes Kevin M O'Connor,Charles H Dowding Limited preview - 2021 |
Geomeasurements by Pulsing Tdr Cables and Probes Kevin M O'Connor,Charles H Dowding No preview available - 2019 |
Common terms and phrases
air-dielectric aluminum outer conductor amplitude attenuation backfill balun battery borehole Bureau of Mines cable deformation cable tester Cablewave Systems calibration changes chapter clay coal coaxial cable CommScope cursor data blocks datalogger depth detect developed diameter dielectric constant diode distance Domain Reflectometry Dowding drilling Equation grout highwall hole inclinometer lead cable length localized shear Mining Applications moisture content movement mrho multiplexer neutron probe NUTSA O'Connor optical fiber OTDR piezometers pipe pulse pulser pulser/sampler reference crimps reflection coefficient Reflectometry in Environmental rock rods samples sensitivity Sensors serial communication shear band shear deformation shear displacement shear zone shown in Figure slope soil moisture solid aluminum Special Publication SP stiffness surface Table TDR cable TDR measurement TDR monitoring TDR probes TDR reflection magnitude TDR waveforms Tektronix tests Topp transducer transducer cable transmission line Type U.S. Bureau vertical voltage water content water level waveform data