Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Consolidation and Shear Failure Leading to Subsidence and Settlement. Final Report
Subsidence and settlement are phenomena that are much more destructive than generally thought. In shallow land burials they may lead to cracking of the overburden and eventual exposure and escape of waste material. The primary causes are consolidation and cave-ins. Laboratory studies performed at Los Alamos permit us to predict settlement caused by consolidation or natural compaction of the crushed tuff overburden. We have also investigated the shear failure characteristics of crushed tuff that may lead to subsidence. Examples of expected settlement and subsidence are calculated based on the known geotechnical characteristics of crushed tuff. The same thing is done for bentonite/tuff mixes because some field experiments were performed using this additive (bentonite) to reduce the hydraulic conductivity of the crushed tuff. Remedial actions, i.e., means to limit the amount of settlement, are discussed. We finally discuss our field experiment, which studies the influence of subsidence on layered systems in general and on biobarriers in particular. The share of the produced cavities is compared with cavities produced by idealized voids in an idealized environment. Study of root penetration at subsidence sites gives us an indication of the remaining degree of integrity. 30 refs., 24 figs., 19 tabs. (ERA citation 11:025387)
Consolidation and Shear Failure Leading to Subsidence and Settlement. Final Report
Subsidence and settlement are phenomena that are much more destructive than generally thought. In shallow land burials they may lead to cracking of the overburden and eventual exposure and escape of waste material. The primary causes are consolidation and cave-ins. Laboratory studies performed at Los Alamos permit us to predict settlement caused by consolidation or natural compaction of the crushed tuff overburden. We have also investigated the shear failure characteristics of crushed tuff that may lead to subsidence. Examples of expected settlement and subsidence are calculated based on the known geotechnical characteristics of crushed tuff. The same thing is done for bentonite/tuff mixes because some field experiments were performed using this additive (bentonite) to reduce the hydraulic conductivity of the crushed tuff. Remedial actions, i.e., means to limit the amount of settlement, are discussed. We finally discuss our field experiment, which studies the influence of subsidence on layered systems in general and on biobarriers in particular. The share of the produced cavities is compared with cavities produced by idealized voids in an idealized environment. Study of root penetration at subsidence sites gives us an indication of the remaining degree of integrity. 30 refs., 24 figs., 19 tabs. (ERA citation 11:025387)
Consolidation and Shear Failure Leading to Subsidence and Settlement. Final Report
W. Abeele (Autor:in) / J. W. Nyhan (Autor:in) / T. E. Hakonson (Autor:in) / B. J. Drennon (Autor:in) / E. A. Lopez (Autor:in)
1986
94 pages
Report
Keine Angabe
Englisch
Radioactive Wastes & Radioactivity , Bentonite , Ground Subsidence , Radioactive Waste Disposal , Soils , Tuff , Compacting , Density , Experimental Data , Ground Disposal , Hydraulic Conductivity , Moisture , Permeability , Pore Pressure , Shear Properties , Stresses , Swelling , Voids , ERDA/052002 , ERDA/580300
CONSOLIDATION SUBSIDENCE METHOD FOR UNDERWATER GROUND
| Europäisches Patentamt | 2023
| Wiley | 2010
| Wiley | 2016