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Articles 1561 - 1590 of 2055
Full-Text Articles in Engineering
The Kettleman Hills Landfill Failure: A Retrospective View Of The Failure Investigations And Lessons Learned, James K. Mitchell, Mihsiung Chang, Raymond B. Seed
The Kettleman Hills Landfill Failure: A Retrospective View Of The Failure Investigations And Lessons Learned, James K. Mitchell, Mihsiung Chang, Raymond B. Seed
International Conference on Case Histories in Geotechnical Engineering
The sliding stability failure of the Kettleman Hills waste landfill focused attention on several issues related to the safe design and filling of waste repositories, including low strengths between geosynthetic material interfaces in composite liner systems and low interface strength between compacted clay and smooth geomembranes. Waste placement plans must be carefully developed to insure an adequate factor of safety against sliding at all stages of filling. Because of assumptions and uncertainties that remained following the initial failure investigation, model tests, at a scale of 1:150, were done. These tests reproduced the field failure very well and provided insights into …
Man-Made Vibrations And Solutions, K. R. Massarsch
Man-Made Vibrations And Solutions, K. R. Massarsch
International Conference on Case Histories in Geotechnical Engineering
The generation and propagation of man-made vibrations in the ground is discussed. Emphasis is placed a simplified approach which is used to assess the most important factors, such as wave attenuation, refraction focusing and vibration amplification as a result of resonance. Practical guidelines are presented which can be used to predict vibrations and settlements in the ground. A semi-empirical relationship for the assessment of permissible vibration levels for buildings is proposed. Finally, a new ground vibration isolation method, the gas cushion screen is presented.
Practical Studies Of The Seismic Response Of A Rockfill Dam And A Tailings Impoundment, W. D. Liam Finn
Practical Studies Of The Seismic Response Of A Rockfill Dam And A Tailings Impoundment, W. D. Liam Finn
International Conference on Case Histories in Geotechnical Engineering
Two case studies from engineering practice are presented to demonstrate how useful a sophisticated finite element analysis can be in providing a comprehensive understanding of how dams behave during earthquakes. The first example involves determining, from the recorded performance of a rockfill dam, the volume change characteristics of the rockfill which cannot be measured directly. The second example covers the full range of current capability for analysis. It involves dynamic effective stress analysis of a tailings dam to check the triggering of liquefaction and the analysis of post-liquefaction flow deformations.
Discussions And Replies: State Of The Art Papers, Mohamad Hussein, Fred H. Held Iii, C. Mirza, T. M. Davisson
Discussions And Replies: State Of The Art Papers, Mohamad Hussein, Fred H. Held Iii, C. Mirza, T. M. Davisson
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Third International Conference On Case Histories In Geotechnical Engineering, Multiple Authors
Third International Conference On Case Histories In Geotechnical Engineering, Multiple Authors
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Second International Conferences On Recent Advances On In Geotechnical Earthquake Engineering And Soil Dynamics, Multiple Authors
Second International Conferences On Recent Advances On In Geotechnical Earthquake Engineering And Soil Dynamics, Multiple Authors
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
List Of Conference Participants, Multiple Participants
List Of Conference Participants, Multiple Participants
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Concluding And Banquet Remarks And Speech, Multiple Authors
Concluding And Banquet Remarks And Speech, Multiple Authors
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Welcome And Opening Remarks, Multiple Authors
Welcome And Opening Remarks, Multiple Authors
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Past Proceedings: First International Conference On Case Histories In Geotechnical Engineering (1984): Vol. Iv, Multiple Authors
Past Proceedings: First International Conference On Case Histories In Geotechnical Engineering (1984): Vol. Iv, Multiple Authors
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Past Proceedings: First International Conference On Case Histories In Geotechnical Engineering (1984): Vol. I, Multiple Authors
Past Proceedings: First International Conference On Case Histories In Geotechnical Engineering (1984): Vol. I, Multiple Authors
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
A Low Rise Hospital Development On Restored Opencast Fill, W. M. Kilkenny
A Low Rise Hospital Development On Restored Opencast Fill, W. M. Kilkenny
International Conference on Case Histories in Geotechnical Engineering
An extensive low-rise hospital development has taken place since 1982 on a former opencast coal mining site 30 years after working and restoration. The clay and shale fill some 20 metres deep was placed without systematic compaction. Five separate site investigations have been carried out at different times during the last 20 years and a detailed engineering geological mapping exercise was completed in 1977. Drainage works and the main buildings in Scheme 1 and 2 have been monitored during and after construction. Significant settlements have occurred requiring some remedial work. A surcharge and inundation trial has been undertaken prior to …
A Modified Field Infiltrometer Test For Clay Liners, G. S. Laird, W. B. Lozier, A. M. Gurevich
A Modified Field Infiltrometer Test For Clay Liners, G. S. Laird, W. B. Lozier, A. M. Gurevich
International Conference on Case Histories in Geotechnical Engineering
Regulatory agencies are looking more frequently to in situ field hydraulic conductivity tests for the assessment of a liner's compliance to a specified hydraulic conductivity. Most field tests have evaluated hydraulic conductivity by measuring the infiltration rate of the liner. The infiltration rate can be used to arrive at a hydraulic conductivity value if the hydraulic boundary conditions of the test can be identified or if the head loss at different depths can be measured. A test fill of a clay liner was evaluated for its saturated vertical hydraulic conductivity. This paper discusses the use of eight tensiometers to measure …
Complementing Radiologic Data With Geology – A Case History, Dennis Mcgrane
Complementing Radiologic Data With Geology – A Case History, Dennis Mcgrane
International Conference on Case Histories in Geotechnical Engineering
The goal in characterizing radioactively contaminated soil is to quantify the degree of contamination and its parameters. A cost effective, small scale characterization is done by performing a surface radiological survey with subsurface data coming from boreholes augered in a tight grid pattern. Confidence in the between-hole extrapolations depends on the grid size. However, at the widely contaminated site in Maywood, New Jersey a grid width of 100 feet was the only economical choice. Accurate contamination parameters were determined despite the wide hole spacings once geologists and health physicists learned how local geologic conditions controlled the contamination's location and extent. …
Control Of Uplift From Ground Water, R. V. Sarsby
Control Of Uplift From Ground Water, R. V. Sarsby
International Conference on Case Histories in Geotechnical Engineering
This paper relates to the conversion of a disused water reservoir into a landfill site for domestic and industrial refuse. The reservoir was initially subdivided into four cells (by using earth bunds) and three of the cells have been successfully prepared and filled. The fourth cell is the largest and presents the greatest number of geotechnical problems, the major one being the problem of ensuring that leachate does not escape into the groundwater. The first owner of the site removed natural clay from various parts of the reservoir base to seal the first three cells. In doing so he exposed …
Disposal Of Phenolic Waters From A Producer Gas Plant, Dorairaja Raghu, Hsin-Neng Hsieh
Disposal Of Phenolic Waters From A Producer Gas Plant, Dorairaja Raghu, Hsin-Neng Hsieh
International Conference on Case Histories in Geotechnical Engineering
Phenolic waters are generated in a producer gas plant in India. Since harmful environmental effects can result even with low concentrations of phenol in water, its disposal poses a problem. Four options for disposal were considered. One of these options considered involves disposal in a earthen pond situated close to a river. In order to avoid river pollution by possible seepage of phenolic waste, geotechnical aspects have to be considered. For each option, cost analysis is performed. This paper d1scusses as to how the final disposal technique is decided taking into account all the relevant aspects of the problem.
Hazardous Waste Disposal Site Hydrogeologic Characterization, S. M. Testa
Hazardous Waste Disposal Site Hydrogeologic Characterization, S. M. Testa
International Conference on Case Histories in Geotechnical Engineering
A major hazardous waste disposal facility near Arlington, Oregon serving the Pacific Northwest, Canada, and Alaska maintains numerous favorable environmental characteristics for siting of a hazardous waste disposal facility. The risk of contamination as a result of potential leakage from a waste management unit via primary pathways to surface water, groundwater or by direct contact and/or ingestion is thus reasonably low. However, these same characteristics which make the site most suitable for hazardous waste disposal often conflict with: 1) the demonstration of the groundwater monitoring system's ability to adequately perform immediate leak detection monitoring as mandated under the Resource Conservation …
Implementation Of Remedial Measures To Contain A Pcb Spill, M. D. Huag, J. Atwater, R. B. Knight, P. Kozicki, A. Lissey
Implementation Of Remedial Measures To Contain A Pcb Spill, M. D. Huag, J. Atwater, R. B. Knight, P. Kozicki, A. Lissey
International Conference on Case Histories in Geotechnical Engineering
A large spill of Polychlorinated Biphenols (PCB's) occurred at Federal Pioneer Limited's Regina Plant in 1976. The City of Regina is underlain by a relatively shallow aquifer which supplies a significant proportion of its drinking water. A remedial measures plan was developed to contain this spill within the boundaries of the site and clean up any contamination which had spread to adjacent property. The remedial measures plan developed involved limiting or reversing the normal downward hydraulic gradient. The three principle measures introduced to accomplish this reversal included the construction of a cutoff wall around the site, installation of a thick …
Performance Of Lightweight Waste-Impoundment Dikes, Peter J. Bosscher, Tuncer B. Edil
Performance Of Lightweight Waste-Impoundment Dikes, Peter J. Bosscher, Tuncer B. Edil
International Conference on Case Histories in Geotechnical Engineering
The containment dikes of two sludge disposal lagoons were founded on low strength, highly compressible wetland soils in Madison, Wisconsin. These lagoons, constructed in 1942 and 1967 respectively, encompass 130 acres of digested sludge produced at the sewage treatment plant. The dikes have experienced two previous failures in 1970 and 1973. A dike rehabilitation program was initiated in 1976 to prevent additional failures. New dikes were built using wood chips as a lightweight fill. Non-woven synthetic filter fabric was used to prevent soil intrusion into the chips and to provide resistance to lateral spreading. An investigation was initiated in 1984 …
A Geological Appraisal Of Slope Instability And Proposed Remedial Measures At Kaliasaur Slide On National Highway, Garwal Himalaya, G. S. Mehrotra, R. K. Bhandari
A Geological Appraisal Of Slope Instability And Proposed Remedial Measures At Kaliasaur Slide On National Highway, Garwal Himalaya, G. S. Mehrotra, R. K. Bhandari
International Conference on Case Histories in Geotechnical Engineering
For over six decades Kaliasaur landslide (Lat. 30° 14' 30" N, Long. 78° 55' 50" E) is a nightmare on the Hardwar-Badrinath road in the Garhwal Himalaya. Located on a sharp bend on the left bank of river Alaknanda, it has emerged as a multi-tier repetitive major landslide, retrogressive in nature. Both surficial and deep seated movements have been monitored. The sliding in the upper layers have been predominantly in the colluvium but where interfaces of quartzite and shale participates, the sliding surfaces have been better defined and discrete. In the present paper, the authors have highlighted the geological, geomorphological …
A Novel Low Cost Drum Diaphragm Wall For Landslide Control In The Himalaya, R. K. Bhandari
A Novel Low Cost Drum Diaphragm Wall For Landslide Control In The Himalaya, R. K. Bhandari
International Conference on Case Histories in Geotechnical Engineering
Construction of masonry and reinforced cement concrete .retaining walls are common as a measure of landslide control in the Himalayan region. They are usually very expensive and call for import of cement, steel, stones, sand and water from long distances. The paper spotlights a novel technology of constructing anchored drum diaphragm retaining walls which make use of slope waste material itself for wall construction, saving to the tune of 40 per cent in cost. Utilization of slope debris in turn minimizes hazards due to debris flow, rockfalls, etc. and other mass movements.
Case Study – Ground Failures And Ruptures In Xian City, Zhong-Qi Wang, Rong-Xiang Zhang
Case Study – Ground Failures And Ruptures In Xian City, Zhong-Qi Wang, Rong-Xiang Zhang
International Conference on Case Histories in Geotechnical Engineering
Xian city, the most well known ancient city of China for her incredible Terra Cotta Warriers and so forth, has been suffered from ground fracture for years. Surface ruptures and "faultings" encountered in strips all over the city. Hundreds of buildings were severely destroyed and many of them even have been demolished. Ground failures wide-spread and enlarged from time to time, especially right from Tangshan earthquake of July 28, 1976. Therefore serious concerns and suspicious of being associated with major earthquakes have arosed. Thus it has been a problem of both engineering and social influence. Like many other cities in …
Construction Of Hydel Power House In Weak Rocks, K. K. Kapoor, S. C. Patodiya
Construction Of Hydel Power House In Weak Rocks, K. K. Kapoor, S. C. Patodiya
International Conference on Case Histories in Geotechnical Engineering
Geological uncertainties have always played an important role in planning of a hydel power house. This paper presents case study of a power house which was subjected to major revisions in its planning due to inherent instabilities in rock slopes. Initially the power house was planned with service bay and other facilities on its left hand side, but the weak and instable slopes and sliding of large rock masses necessitated its thorough revision by bringing service bay and other facilities to its right hand side along with addition of many new features and flattening of slopes. There were many alternatives …
Effects Of Geology And Geotechnical Properties Of Rocks For The Selection Of Type Of Dams, Baqir Hasan
Effects Of Geology And Geotechnical Properties Of Rocks For The Selection Of Type Of Dams, Baqir Hasan
International Conference on Case Histories in Geotechnical Engineering
The topography, geology, foundation conditions and geotechnical properties of the rock units play a dominant role in the selection of type of a dam. It is usually difficult to determine initially, what particular type of dam is technically feasible and economically viable, for a particular dam site. In selecting the most suitable type of dam, a thorough consideration is given to the characteristic of each type of dam. Before the final selection of the type of dam, detailed evaluation is made of location, topography, geology, foundation condition, geological structure, seismicity, depth of the overburden in the valley section, geotechnical properties …
Engineering Design Of Rock Slope Reinforcement Based On Non-Linear Joint Strength Model, Stavros C. Bandis
Engineering Design Of Rock Slope Reinforcement Based On Non-Linear Joint Strength Model, Stavros C. Bandis
International Conference on Case Histories in Geotechnical Engineering
Optimum dimensioning of bolts or anchors for the reinforcement of slopes in jointed rock masses, requires compatible strength-deformation data, for both the rock joints and the reinforcing elements. Most types of rock joints behave in non- linear fashion and, thus, realistic modelling can have serious implications in the design, both from the economical and the technical standpoints. This paper will present, briefly, the principles of a constitutive model of joint shear behaviour and a method for optimum bolt or anchor design. The implications of non-linear joint behaviour will be demonstrated with numerical examples. Finally, a case study of slope stabilization, …
Evaluation Of The Site Investigation And Construction Related Aspects Of The Milwaukee's Crosstown Deep Tunnel, R. C. Ilsley, S. B. Fradkin, E. F. Shorey
Evaluation Of The Site Investigation And Construction Related Aspects Of The Milwaukee's Crosstown Deep Tunnel, R. C. Ilsley, S. B. Fradkin, E. F. Shorey
International Conference on Case Histories in Geotechnical Engineering
The excavation of the 21,300 foot long, 32.33 foot diameter Crosstown Phase I Tunnel was completed by tunnel boring machine at an average rate of 108 feet per 3 shift day. No geologic conditions were encountered which were sufficiently adverse to impede the work. The geotechnical report combined with contract provisions prevented the unusual conditions encountered from becoming issues that delayed the work. It is probable that the monetary aspects related to these unusual conditions can be equitably resolved using the geotechnical data “base line” portrayed in the geotechnical report.
Foundation Investigation And Treatment For The Main Dam, Italpu Project, John G. Cabrera
Foundation Investigation And Treatment For The Main Dam, Italpu Project, John G. Cabrera
International Conference on Case Histories in Geotechnical Engineering
After selection of the site for this major hydroelectric project on the Upper Parana River, initial borings in the river bed revealed an extremely fractured zone near the base of the dense basalt flow on which the main dam would be founded. This zone was later seen to correspond to intersecting faults beneath the river bed, therefore upon dewatering the river channel several exploratory tunnels were driven parallel and perpendicular to the dam axis, foreseeing their incorporation into an elaborate "shear key" system to prevent renewed movements of the shear zones. The tunnel grid was backfilled with concrete through holes …
Geo-Engineering Problems In The Spillway Foundations And Their Treatment At Guhai Reservoir Project In Gujurat, India, D. M. Pancholi, K. E. Modhwadia, P. H. Vaidya
Geo-Engineering Problems In The Spillway Foundations And Their Treatment At Guhai Reservoir Project In Gujurat, India, D. M. Pancholi, K. E. Modhwadia, P. H. Vaidya
International Conference on Case Histories in Geotechnical Engineering
During the initial stage of construction of a 23 m high composite dam across the Guhai river, the downstream dipping sedimentary rock sequence of conglomerate, sandstone and shale resting unconformably over quartzite and schist was encountered as a surprise during the excavation of the foundation. Besides, an 8 to 8.5 m wide major fault zone along with three minor faults running across the dam axis were also noticed. Extensive subsurface investigations to study the nature and characteristics of sedimentary rocks, fault zones, etc. met with in the foundations were undertaken concurrently with the construction activity. As a result, the construction …
Ground Failure Investigation Over Abandoned Coal Mines: A Case Study, Marlo G. Karfakis, Bruce A. Suprenant
Ground Failure Investigation Over Abandoned Coal Mines: A Case Study, Marlo G. Karfakis, Bruce A. Suprenant
International Conference on Case Histories in Geotechnical Engineering
The slurry backfill operation for the Rock Springs subsidence control project is briefly described. The extent of ground failure and building damage is presented. The scope of the ensuing geotechnical investigation to indicate any possible cause and effect relationship between the pumped slurry backfill operation and observed damage is described. The general and specific findings regarding the damaged area are discussed. Conclusions from the investigation are presented.
Grouting A Water Tower Foundation In A Carbonate Formation, Dorairaja Raghu, David Antes, Joseph J. Lifrieri
Grouting A Water Tower Foundation In A Carbonate Formation, Dorairaja Raghu, David Antes, Joseph J. Lifrieri
International Conference on Case Histories in Geotechnical Engineering
Grouting the cavities in cavernous carbonate formations is one of the techniques employed to achieve reliable bearing support for structures founded in and on such rock units. For this purpose, conventional exploration methods, such as test borings and geophysical measurements, can be employed to obtain the necessary subsurface data; but, they are usually limited in extent, expensive, time consuming, and can be misleading. These limitations can be overcome by employing percussion probing techniques. A case history is cited wherein percussion probing was successfully employed.