... ploughability assessment soil classification machine learning otc 23297 tow force on-bottom stability assessment silt fine sand particle size distribution seabed soil classification classification system OTC 23297 Seabed Soil Classification, Soil ehaviour and Pipeline esign N. I. Thusyanthan, Cape...

... uplift. A pipe flotation hypothesis was advanced and this paper concentrates on the work performed on this scenario. The conclusions reached were that during backfilling the mixing of the tine sand, silt, clay and shells produced a very high void ratio material that behaved as a slurry for long enough...

... or a mechanism involving the lateral migration of pore pressure through thin pervious layers. This paper presents the results of a finite element analysis of the response of foundation clays and silts under construction loads imposed by the Tarsiut N-44 caisson retained island structure. Analyses are al so...

... ABSTRACT A series of consolidated un drained static and cyclic simple shear tests was conducted on highly over on soldiered silt from offshore California. The observed behavior indicates a tendency for initial contraction followed by dilation. As a result, the total stress path followed...

... ABSTRACT Cone penetration tests were performed with a piezocone and a friction cone in highly over consolidated silts offshore southern California. Measurements of pore pressure response allowed interpretation of the results to yield effective stress and undrained strength parameters agreeing...

... ABSTRACT Case studies documenting the performance of jack up rigs in deposits of clay and sand are prevalent in the literature. In contrast, little information documenting the performance of jack up rigs in silt deposits is available. In this paper, the observed spud can penetrations of a jack...

... ocean dredge morton army corps new haven island us government connecticut sediment otc 4755 mound andashraf disposal mound harbor silt OTC 4755 Geotechnical Characteristics of Shallow Ocean Dredge Spoil Disposal Mounds by K.R. Demars, RP. Long, and J.J. Dowling, U. of Connecticut, and RW...

... ABSTRACT Silt soils have been encountered near the mud line in most of the Alaska Offshore Continental Shelf. The silts were found in both the recent (Holocene) and the older (Pleistocene) deposits. The gradation of these soils ranges from silt and fine sand to clayey silt. Soil test data...

... appear to be restricted to the area north and west of Prudhoe Bay. To the east and farther offshore, the gravel is covered by overconso1idated clay and silt or is ice-bonded. The hole north of Flaxman Island encountered very little sand and gravel for its entire depth of 300 feet. Soft organic silt...

... plasticity continental shelf upstream oil & gas stratum 4 usgs mid-atlantic continental shelf sediment us government information knebel silt pleistocene sheridan OTC 3397 GEOLOGY AND GEOTECHNICAL FEATURES OF THE MID-ATLANTIC CONTINENTAL SHELF by K. R. Demars, R. D. Charles, and J...

... centrifuge. Lateral cyclic load tests have been carried out on a 1/100scale instrumented model pile imbedded in a saturated sandy silt at 100 g in a centrifuge. The history of displacements and moments is presented and discussed. An analysis is presented to explain the observed softening behavior of the pile...

... penetrometer and coring equipment. Other uses include preconsolidation of soft silts (Valent et al. 1972) to improve sediment properties or seating and removal of bottom supported structures with the advantage of providing temporary support. As applied to gravity-type petroleum structures, the suction anchor...

.... compressibility southern california compression bird rock paper offshore techndlogy sea-floor sediment consolidation strength silty sand silty clay moisture content continental shelf continental slope plasticity silt sediment water depth geotechnical property OFFSHORE TECHNDLOGY CO~FERENCE...

... freeboard strength island silt beaufort sea delta OFFSHORE TECHNOLOGY CO~FERENCE 6200 North Central Expressway Dallas. Texas 75206 PAPER NUMBER OTC 2167 THIS PRESENTATION IS SUBJECT TO CORRECTION The Construction of Artificial Islands In the Beaufort Sea By James G. Riley, Imperial Oil L~d...

... variety of sediments (sands, silts, and clays) having porosity values from 26 to 93 percent. The laboratory data indicated that porosity predictions to within ± 2 percent were attainable by electrical resistively techniques. In addition, the sediment particle size, distribution, and structure influenced...

... and lateral wave forces imposed on the structure itself. Soft silts and clays are common to many deep-sea floor sites and require either removal or confinement. In the latter case, loading rates must be controlled. Irregular and rocky sites present special difficulties, requiring removal of high spots...

... ABSTRACT A diverse pattern of sands, silts and clays occurs below a thin mantle of young seabottom muds at Vermilion Block 321. The shallow layers are clearly recorded on a network of high resolution sparker lines that traverse the 2,500-acre tract in north-south and east-west directions...

... pertaining to the soils behavior has now been sought in connection with hydrostatic anchoring. Triaxial extension tests were performed to simulate actual failure conditions. These tests performed on laboratory sedimented kaolinite clay and on Providence silt indicate that the Mohr-coulomb shear parameters...