Geotechnical Design Over Karst. It's All About the Water
Karst is a type of topography which is formed over soluble rocks, such as limestone, dolomite, or gypsum. An irregular bedrock surface is typical of most karst areas, along with sinkholes,...
A Probabilistic Approach to Karstic Foundation Variability
Karst is a landscape formed in soluble rocks caused by movement of water that has become slightly acidic. Limestone, dolomite, and gypsum are vulnerable to these influences and may be...
Karst-Related Sinkholes: Dynamic Compaction as an Effective Remediation Option
The paramount issue to address before constructing at sites underlain by karst topography is identification and remediation of sinkholes which exist close to the surface, and specifically...
Water Quality Restoration of the Mammoth Cave Karst Aquifer: A Work in Progress
Over tens of thousands of years the aquatic ecosystem of the Mammoth Cave Karst Aquifer evolved in concordance with natural recharge supplied through 24,000 hectares of tall-grass prairie...
Periodic Variation in Karst Stream Losses
A cave taking water from an ephemeral stream periodically reroutes surface and subsurface drainage because of a plug that forms 10 m below the main entrance to the cave. The plug of sand,...
Preliminary Studies of a Karst Warm Spring in Mt. Kr?uterin, Austria
A warm spring occurs at the west foot of Mt. Kruterin, characterized by relatively higher temperature (17.4?C) and sulfate concentration (162 mg/L) against with the regional background...
Hysteresis Effect of Karst Vadose Zone in Spring Kr5, Mt. Kr?uterin, Austria
Hysteresis effect is considerable in Spring Kr5, involving a chain of processes of recharge-infiltration-discharge. The lag time of each process to another can be briefly summarized and...
Karst Water Inventories Using Thermography
An airborne thermal camera was used to locate springs, swallets, and caves in a karst watershed. The detector was an imaging infrared camera with a temperature sensitivity of approximately...
Pollution Transport in Karst
A new model of pollution transport in natural streams was developed and tested. Dead zone storage is modeled as a two time constant process. This approach better matches the observed persistence...
Lake-Level Declines in Karst Lake During Droughts
Lake-level declines in Brooklyn Lake, a karst lake in north-central Florida, have been investigated. Below average rainfall, vertical leakage to the underlying aquifer system, declining...
Rock in the Limestone Regions of the Southeastern United States
Problems often arise in the shaft drilling industry in the Southeast. The karst areas in this region have certain situations found in few other places. Erratic boulders and limestone pinnacles...
Foundation Engineering Constraints in Karst Terrane
Cavity-prone carbonate rocks are found in many Appalachian valleys and represent a poorly recognized hazard. This paper reviews the nature of the problem of founding above these Cambro-Ordovician...
Evaluating Sinkhole Hazards in Mantled Karst Terrane
Sinkholes are the most serious geologic hazard in karst terrane because they can damage structures, drain ponds and lakes, and allow direct infiltration of groundwater contamination. The...
Geophysical Exploration for Cavity Detection in Karst Terrain
Detection of poor quality rock and voids has been a major research activity of the U. S. Army Engineer Waterways Experiment Station (WES) since the mid 1970's. The principal...
Exploration of Karst Conditions in Central Florida
Walt Disney World, which comprises some 28,000 acres (11,000 ha) in central Florida, is underlain by cavernous limestone and is characterized by karst topography; with distinct low ground...
Evaluation of Reservoir Seepage in Karst Topography
Areas where seepage is likely to occur in the karst environment of the proposed West County Reservoir, Roanoke County, Virginia have been indentified. Solutioning exists in the form of...
Exploring Karst Terrain with Air Track Drilling
Pneumatic-powered track-mounted, percussion drills can be used to perform or augment geotechnical investigations in some karst settings. The air track drill is best suited to exploring...
Karstic Foundation Problems Sunny Point Railroad
Active limestone sinkholes have been causing problems and affecting the operation of the access railroad to the Military Ocean Terminal, Sunny Point, North Carolina (MOTSU) since 1962....
Geotechnical Exploration and Site Preparation Techniques for Large Mall in Karst Terrain
A large commercial mall and secondary developments were planned for construction in a karst area near Clarksville, Tennessee. A geotechnical exploration was conducted to evaluate the occurence...
Sinkhole Rectification by Compaction Grouting
The unraveling of the overburden by solution activity in karst formations has caused many problems in existing structures and has generated high foundation costs on new construction. Slurry...
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