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Finding F.O.S For Flow Type Landslide With Static Liquefaction At Karshingsa – A Case Study, Gokul K. Bayan
Finding F.O.S For Flow Type Landslide With Static Liquefaction At Karshingsa – A Case Study, Gokul K. Bayan
International Conference on Case Histories in Geotechnical Engineering
Karshingsa is a hilly terrain situated in lower Himalayan region under Arunachal Pradesh in India. It expresses occurrence of severe landslides of debris flow nature almost every year as and when consecutive 3-month rainfall precipitation during peak monsoon period exceeds about 2,300 mm, all along the lower Himalayan region of Eurasian plateau most particularly in Karshingsa area. Study carried out in the lower belt of Arunachal Himalaya for about more than one decade proclaims that 45%-55% landslides are flow type origin, the debris of which are flowing like liquid. Mechanism of such flow failure is static liquefaction developed in a …
Failures And Remediation Of Rock Slope Stability Problems And Remediation At Earthquakes At Part Of Werka Descent Road West Of Saudi Arabia, Bahaaeldin Sadagah
Failures And Remediation Of Rock Slope Stability Problems And Remediation At Earthquakes At Part Of Werka Descent Road West Of Saudi Arabia, Bahaaeldin Sadagah
International Conference on Case Histories in Geotechnical Engineering
Werka descent road lies at western region of Saudi Arabia. It is constructed two years ago harmed due to rainstorm and absence of remedial measures. Werka mountainous road subjected to failures of man-made rock slope faces, and debris flow along both sides of 8-m width road. Intensive geotechnical study includes the RMR and GSI rock masses classifications were applied indicates that the rocks are medium to poor quality. The integrated techniques such as graphical method, modeling, and simulation were utilized to assess rock slope failures and rockfalls by using DIPS, RocFall, RocPlane and Swedge programs, and recommend the remedial measures …
Effect Of The Soil Spatial Variability On The Static And Dynamic Stability Analysis Of A Lebanese Slope, Mansour Neaimeh, Rony Azar, Roni Hmaymes, Georges Nasr, Dalia Youssef Abdel Massih, Jacques Harb, Nancy Salloum, Cécile Cornou, Denis Jongmans
Effect Of The Soil Spatial Variability On The Static And Dynamic Stability Analysis Of A Lebanese Slope, Mansour Neaimeh, Rony Azar, Roni Hmaymes, Georges Nasr, Dalia Youssef Abdel Massih, Jacques Harb, Nancy Salloum, Cécile Cornou, Denis Jongmans
International Conference on Case Histories in Geotechnical Engineering
The accidental topography and heterogeneous Lebanese geology in addition to the active seismicity have initiated the static and dynamic stability analysis of Lebanese slopes. In this paper, the stability of a sandy Lebanese slope situated at Mansourieh near Beirut is investigated using deterministic and probabilistic approaches. The characterization of the variability of the slope soil properties is done based on geological investigation, as well as geophysical (Resistivity and Ambient noise) and geotechnical tests performed on this slope. Three dimensional 3D static deterministic analyses is performed to determine the overall safety factor of the slope and to find the location of …
Over Eight Decades Old “Young” Landslide – A Case Study, Kishor Kumar, P. S. Prasad, Anil Kathait, Indervir Singh
Over Eight Decades Old “Young” Landslide – A Case Study, Kishor Kumar, P. S. Prasad, Anil Kathait, Indervir Singh
International Conference on Case Histories in Geotechnical Engineering
Shirobagad also named as Kaliasaur Landslide was developed in the year 1920 at kilometer-147 on National Highway – 58 (earlier named as State Highway - 45) at latitude 300 14’ 30” N and longitude780 53’ 57” in Garhwal region of western Himalaya. This landslide has been investigated by a number of organizations in India and a wealth of data has been generated mainly on geological aspects. Central Road Research Institute has also investigated this landslide during 2007-2011 covering geological as well as geotechnical aspects. The study area basically encompasses metavolcanis and variants of quartzite rock (e.g. pink and white quartzite) …
Stabilization And Reinforcement Of Slope With Geogrid: A Case Study, Khashayar Hemmati, Seyed Vahid Masoomi, Javad Nazari Afshar
Stabilization And Reinforcement Of Slope With Geogrid: A Case Study, Khashayar Hemmati, Seyed Vahid Masoomi, Javad Nazari Afshar
International Conference on Case Histories in Geotechnical Engineering
This paper presents a case study example of appropriate method selection of stabilization and reinforcement of slope by introducing engineering and economical aspects. Introduced slope is located in science and research campus of Islamic Azad University (IAU) in north of Tehran with height of 4-29 m and length of 370 m. A big building with 9 floors and total area of 70000 square meters is located upper and near edge of slope, so that existence of this building has increased sensitivity of projects design and construction method. Slope is located in vulnerable area with a high risk of seismicity based …
Ancient Landslide Reactivation At The Viaduct No. 1 Located On The Caraca-La-Guaira Highway In Venezuela, Luis B. Fargier-Gabaldón, Daniel A. Salcedo, Rosendo Camargo-Mora
Ancient Landslide Reactivation At The Viaduct No. 1 Located On The Caraca-La-Guaira Highway In Venezuela, Luis B. Fargier-Gabaldón, Daniel A. Salcedo, Rosendo Camargo-Mora
International Conference on Case Histories in Geotechnical Engineering
Reactivation of an ancient landslide detected in 1987 affected the southern side of the Viaduct No.1 located in the Caracas-La Guaira highway, which connects Caracas, capital of Venezuela, with its main seaport and the Simon Bolivar International Airport. The Viaduct was built in 1953 and covered a gorge of approximately 300 m. It consisted of three parallel double-hinged arch ribs made of plain concrete spanning over approximately 152 m and two smaller access Viaducts on either side of the arch rib span. This paper summarizes the results from geotechnical investigation, the evaluation of inclinometers readings and surface control points and …
State Of The Art And Practice (Soap), Multiple Authors
State Of The Art And Practice (Soap), Multiple Authors
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Analysis Of Dam Behaviour After Eighty Years Of Service, Paolo Croce, Giuseppe Modoni
Analysis Of Dam Behaviour After Eighty Years Of Service, Paolo Croce, Giuseppe Modoni
International Conference on Case Histories in Geotechnical Engineering
The paper reports on the behaviour of a masonry dam built in the Italian Alps in the early twenties of the last century and still in operation for electric power supply. The dam is 31 m high and its waterproofing is ensured by a multi-layered impervious facing, a concrete cut-off and a grout curtain protruding into the foundation soils. The geological location of the dam is rather complex, because its left abutment is located on a rock formation while the right one rests on a thick moraine deposit. Since its first impounding, large downstream water flows and significant movements of …
Geotechnical Assessment And Evaluation Of The Impact Of Kachchh (Bhuj) India 2001 Earthquake, Indra Prakash, D. M. Pancholi
Geotechnical Assessment And Evaluation Of The Impact Of Kachchh (Bhuj) India 2001 Earthquake, Indra Prakash, D. M. Pancholi
International Conference on Case Histories in Geotechnical Engineering
Intraplate earthquakes are ongoing activity in the Kachchh region. The area is seismically active and falls in Zone V of the seismic Zoning Map of India. The devastating Bhuj (Kachchh) Earthquake of MS 7.6 occurred in this zone on 26th January, 2001 causing severe damage to civil engineering structures and loss of human life. The surface manifestations of deformation of this earthquake include fractures/ fissures, lateral spread, slump, subsidence, upheaval, sand blows and craters. Bhuj Earthquake has caused considerable damage to earth dams lying in isoseist VIII and above in Kachchh. Damages to dams are in the form of longitudinal …
A Case History Of Site Instability Due To The Presence Of A Shale Layer Above Sloping Bedrock, Sanjeev Kumar, Braja M. Das, Michael L. Hall
A Case History Of Site Instability Due To The Presence Of A Shale Layer Above Sloping Bedrock, Sanjeev Kumar, Braja M. Das, Michael L. Hall
International Conference on Case Histories in Geotechnical Engineering
A study conducted for St. Louis County of Missouri, United States of America classified several areas of the county as unstable for any type of construction because of the presence of high plastic shaley clay or clayey shale on sloping bedrock. These areas are considered to have a potential for site instability to occur due to any change in natural conditions that may increase the moisture content of the high plastic shaley clay or clayey shale. A two-story parking garage, founded on shallow foundations, constructed in one of the potentially unstable zones, showed some movement after several years of its …
Environmental Geotechnics To Study A Historical Town, Filippo Ciuffi
Environmental Geotechnics To Study A Historical Town, Filippo Ciuffi
International Conference on Case Histories in Geotechnical Engineering
The present paper summarizes the original approach, the different stages and the most innovative results of an interdisciplinary research activity, carried out on the subsoil of a historical site, in a seismic area, in Italy: the old town of Potenza, capital of the Basilicata Region. The entire Research-work has been designed and implemented within a total period of about 3 years. The paper is divided into twelve paragraphs and is organized logically, so that the reader can follow the development sequence of the different, interdisciplinary activities, detailed in the “Research General Flow-Chart”. After the Introduction [paragraph 1.0.0], the Philosophical Approach …
Eleven Case Studies Of Failures In Geotechnical Engineering, Engineering Geology, And Geophysics: How They Could Have Been Avoided, David Cummings, Frank J. Kenton
Eleven Case Studies Of Failures In Geotechnical Engineering, Engineering Geology, And Geophysics: How They Could Have Been Avoided, David Cummings, Frank J. Kenton
International Conference on Case Histories in Geotechnical Engineering
When a failure occurs, geotechnical engineers, engineering geologists, and geophysicists assign its cause to an event that immediately precedes the failure, such as an earthquake, heavy rainfall, flood, or other natural event. Assigning the failure to the immediate event is misplaced; the metastasis occurred because marginally stable conditions were allowed to exist through substandard investigations by the technical personnel, improper design, and inadequate review by the permitting agency. The fundamental cause of the failure is human error and is manifested in one or more of six categories. (1) Before the investigation, during discussions with the client. (2) During the investigation, …
Stone Column Ground Improvement Against Liquefaction For The Preveza-Aktio Immersed Tunnel, Christos Vrettos, Stavros Savidis
Stone Column Ground Improvement Against Liquefaction For The Preveza-Aktio Immersed Tunnel, Christos Vrettos, Stavros Savidis
International Conference on Case Histories in Geotechnical Engineering
The construction of the road fixed-link crossing between Preveza and Aktio on the north-western coast of Greece has recently been completed. The project consists of an immersed single-tube tunnel under the strait and two cut-and-cover tunnels at the ends of the immersed part. The immersed section is constructed of eight precast rectangular concrete elements placed on the sea bottom at a depth of 25 m. The site is characterized by high seismicity. Foundation soil consists of Holocene marine sediments comprising irregular layers of sands, silts and clays that extend to great depth in the central part of the strait. Along …
Impact Of Geographical Information Systems On Geotechnical Engineering, J. David Rogers, Ronaldo Luna
Impact Of Geographical Information Systems On Geotechnical Engineering, J. David Rogers, Ronaldo Luna
International Conference on Case Histories in Geotechnical Engineering
Over the last four decades Geographical Information Systems (GIS) have emerged as the predominant medium for graphic representation of geospatial data, including geotechnical, geologic and hydrologic information routinely used by geotechnical and geoenvironmental engineers. GIS allow unlimited forms of spatial data to be co-mingled, weighted and sorted with any number of physical or environmental factors. These data can also be combined with weighted political and aesthetic values to create hybrid graphic products capable of swaying public perceptions and decision making. The downside of some GIS products is that their apparent efficacy and crispness can also be deceptive, if data of …
Meet Our Authors And Speakers, Multiple Authors
Meet Our Authors And Speakers, Multiple Authors
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Estimation Of Maximum Advance In Kaka-Reza Water Conveyance Tunnel At 700 Meter Depth, D. Azizmohammadi, H. Abbasi
Estimation Of Maximum Advance In Kaka-Reza Water Conveyance Tunnel At 700 Meter Depth, D. Azizmohammadi, H. Abbasi
International Conference on Case Histories in Geotechnical Engineering
The purpose of this research is the determination of maximum rate of advance in one stage of blasting in middle zone of Kaka-Reza water conveyance tunnel. In this zone of tunnel with average 700 meters of overburden, based on geological and geo-mechanical conditions, the supporting system will install immediately after excavation. The methodology of this research is combined of direct strain evaluation technique (DSET), numerical modeling (FLAC 2D) and convergence analysis. The research is done in three stages. At the first stage, the allowable strain in surrounding rock mass of tunnel is calculated based on DSET. At the second stage, …
Full Scale Field Test On A Slope Progressive Failure, I. Stanculescu, C. Athanasiu, A. Chirică, I. I. Stănculescu, E. Georgescu
Full Scale Field Test On A Slope Progressive Failure, I. Stanculescu, C. Athanasiu, A. Chirică, I. I. Stănculescu, E. Georgescu
International Conference on Case Histories in Geotechnical Engineering
In order to obtain the mechanical behaviour parameters of the red structured clays from the Danube- Black Sea Canal and to estimate the behavior of the slopes cut in such clays, an experimental programme was carried out. A checked failure was provoked for a slope dug in red fissured clays. The paper presents the results of the field investigations and the laboratory test regarding the, characteristics of the structured clays, as well as the in situ measurements during the experimental programme. The results of these measurements are compared with those obtained by numerical symulation using a computer program.
Rock Slides Along Haibat Sultan Road, N. Iraq, S. N. Al-Saadi, S. H. Al-Jassar
Rock Slides Along Haibat Sultan Road, N. Iraq, S. N. Al-Saadi, S. H. Al-Jassar
International Conference on Case Histories in Geotechnical Engineering
The instability of rock slopes controlling the main Arbil-Sulaimaniya road has been studied in the southwestern side of Haibat Sultan Mountain, northern Iraq. The cause of this instability is the presence of road cuts as well as the erosion at the toe of the slope. The military operations in the area have further increased the hazardous condition of the slope. Field observations at ten stations have revealed that plane sliding of limestone slabs had occurred within the layers of friable marl. The study focused on the mode of failure, as affected by slope orientation and discontinuity geometry. Subsequent monitoring revealed …
Soil Response During The 1988 Armenia Earthquake, M. K. Yegian, V. G. Ghahraman, G. Gazetas
Soil Response During The 1988 Armenia Earthquake, M. K. Yegian, V. G. Ghahraman, G. Gazetas
International Conference on Case Histories in Geotechnical Engineering
Building damage statistics from the 1988 Armenia earthquake are presented and discussed. These statistics are correlated to the local soil profiles in the two major cities of Leninakan and Kirovakan. The soil amplification effects on building damage during this earthquake are investigated. One-dimensional site response analysis results and valley effects are presented to explain the extent and pattern of damage in the two cities.
Geotechnical Problems Of Dam Sites And Their Solution With Reference To The Projects Of Eastern India, S. Gangopadhyay
Geotechnical Problems Of Dam Sites And Their Solution With Reference To The Projects Of Eastern India, S. Gangopadhyay
International Conference on Case Histories in Geotechnical Engineering
Geotechnical problems of dam construction are associated with adverse geological conditions of the dam site like soft rock, fault, shear zone, joints, weathering, permeable bouldery deposit, soluble rocks, ancient slide etc. In many of the dam sites of eastern India where one or more of such adverse conditions exist, the dam could be safely constructed by treatment of foundation defects. In some cases, however, a new site with less geologic problem was chosen with consequent modification in the project scheme.
Geotechnical And Groundwater Site Characterization On The Umtra Project, J. A. Caldwell, R. A. Rager, L. Coons
Geotechnical And Groundwater Site Characterization On The Umtra Project, J. A. Caldwell, R. A. Rager, L. Coons
International Conference on Case Histories in Geotechnical Engineering
Reclamation of 24 inactive uranium mill tailngs piles involves remedial work to stabilize the piles for 1000 years. Site characterization of geotechnical and groundwater conditions at each site is undertaken prior to remedial action design. This paper describes the approach to UMTRA Project site characterization. A case history, Green River, is described. Details of site characterization costs for most sites are provided.
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 …
A Study Of A Road Landslide In Puerto Rico, C. Rodriguez-Pérez, L. Vázquez Castillo, C. Rodriguez-Molina, A. Vázquez Castillo
A Study Of A Road Landslide In Puerto Rico, C. Rodriguez-Pérez, L. Vázquez Castillo, C. Rodriguez-Molina, A. Vázquez Castillo
International Conference on Case Histories in Geotechnical Engineering
Numerous landslides have plagued the construction of a 1.3 mile road sector in the mountainous region of central Puerto Rico. The area is underlain by a sequence of landslide deposits overlying a muddy limestone and hard overconsolidated clayey soils. Landslides have occurred in both cuts and fills that have delayed the road construction for a period of more than two years, bringing as a result, great economic losses for the Puerto Rico Highway Authority. The landslide trigger mechanism has been intimately related to high rainfall, commonly observed in this region. The geotechnical and geological studies performed previous to the construction …
Rock Mass Behaviour Assessment For Large Cavern In Rock, A. K. Dube, B. Singh
Rock Mass Behaviour Assessment For Large Cavern In Rock, A. K. Dube, B. Singh
International Conference on Case Histories in Geotechnical Engineering
A large power house cavern (22m x 50m x 250m) is proposed to be excavated for installing a 1000 MW hydroelectric power plant for Tehri Dam Project. The gorge chosen for the dam is very narrow and the topography is rugged and inhospitable. This dampened the process of preconstruction investigations. A number of tunnels were constructed for various project structures in the vicinity of the cavern. This provided an excellent opportunity to study the rock mass behaviour. Tunnel closure and rock loads were monitored with the help of instruments. Deformation moduli were also determined for different rock grades with the …
Slope Stabilization Measures For Kirkwood Penstock, Early Intake, California, K. D. Weaver, D. J. Gross, L. T. Bauer
Slope Stabilization Measures For Kirkwood Penstock, Early Intake, California, K. D. Weaver, D. J. Gross, L. T. Bauer
International Conference on Case Histories in Geotechnical Engineering
Kirkwood Penstock, located in a deep, steep-sided canyon near .Yosemite National Park, California, is an integral part of the Hetch Hetchy system, which conveys water from the Sierra Nevada Mountains to the city of San Francisco, California. A heavy rainfall approximately 17 years following construction of the facility triggered settlement of the foundation. Measures undertaken to arrest this settlement included consolidation grouting, construction of facilities to divert surface runoff away from the penstock, and installation of a geomembrane to prevent infiltration of rainfall and snow melt in the vicinity of the penstock. No evidence of further settlement has been detected …
Study Of Some Debris Avalanches In Garwal Himalaya, India, H. C. Nainwal, Y. P. Sundriyal, C. Prasad
Study Of Some Debris Avalanches In Garwal Himalaya, India, H. C. Nainwal, Y. P. Sundriyal, C. Prasad
International Conference on Case Histories in Geotechnical Engineering
This study was carried out in the Alaknanda - Dhauliganga catchment area, located in the north and northeast of Joshimath in the Garfiwal Himalaya. The snow fields, cirques and the related glaciers are located above the altitude approximate 4000 meters, while the river valley have a mean altitude of around 2000 meters. The strategic roads viz. Joshimath-Badrinath and Joshimath-Nitipass pass through this area with a number of villages along with their cultivated land are located along the roads. These roads are often blocked on huge debris avalanches not only damage the road, but also the cultivated land and forests. The …
Subsidence Movements And Structural Damage Related To An Abandoned Coal Mine, Y. P. Chugh, K. Chandrashekhar, R. J. Missavage
Subsidence Movements And Structural Damage Related To An Abandoned Coal Mine, Y. P. Chugh, K. Chandrashekhar, R. J. Missavage
International Conference on Case Histories in Geotechnical Engineering
An area in southwestern Illinois has been experiencing surface and subsurface movements with associated damage to surface structures. The area is underlain by an abandoned, partially extracted room-and-pillar underground coal mine. Instrumentation included TDR (Time Domain Reflectometry), Inclinometers, Sondex, Tiltplates, and precision land surveys. This paper presents the results of a 16-month cooperative study between the Department of Mining Engineering at SIUC and a local coal company.
A Case Of Singular Geotechnical Failure For Industrial Structures In The Peruvian Andes, A. Carillo Gil, R. Torres Vega
A Case Of Singular Geotechnical Failure For Industrial Structures In The Peruvian Andes, A. Carillo Gil, R. Torres Vega
International Conference on Case Histories in Geotechnical Engineering
During the rainy season of 1982, foundation distress was occurred at several recently completed and still incomplete structures of an important mine project located in the Peruvian Andes. When the tailings thickener was tested an unexpected settlement started, some cracking was observed in the slab, and the central pier settled and tilted. The nature of the distress suggested the failure occurred as the result of the combined effect of a long term seepage under the bearing foundation soil and due to its different degree of compaction. This paper presents the characteristics of these problems as both foundation and fill materials, …