Validation of Consolidation Properties of Phosphatic Clay at Very High Void Ratios
The void ratio-effective stress and void ratio permeability relationships for phosphate slime mine tailings were measured by several methods. The measurements were used in nonlinear finite...
Consolidation of Mining Wastes
This paper describes laboratory and field tests for determining consolidation properties of soft sediments, presents data on several types of mining wastes, and presents the results of...
Prediction of Viable Tailings Disposal Methods
A sand-fines-water diagram is proposed to analyze and describe slurries composed of coarse and fine particulate matter. The diagram can be used to predict and plan disposal methods for...
Waste Phosphatic Clay Disposal in Mine Cutsr
Research was undertaken to assess the applicability of waste clay disposal back into phosphate mine cuts. The pit was monitored for two years with measurements of clay surface elevation,...
Centrifugal Modeling of Phosphatic Clay Consolidation
As a by-product of beneficiation, quantities of dilute clay slurry are produced which are stored in retention ponds. One method of accelerating consolidation is to surcharge the clay with...
Application of Finite Strain Consolidation Theory for Engineering Design and Environmental Planning of Mine Tailings Impoundments
A knowledge of the consolidation behavior of mine tailings, during and after deposition, is important in estimating final impoundment capacity, rate and pore fluid expulsion during and...
Convection-Diffusion Analysis of Sedimentation in Initially Dilute Solids-Suspensions
The settling of suspended solids in solids-suspensions is treated from the viewpoint of the relative fluxes established as a result of the upward diffusion of water and the downward convection...
Infrastructure: Money and Methods
State and local governments have started to cope with their infrastructure problems by passing bond issues, establishing infrastructure banks to centralize resources and decision making,...
Thalweg Disposal: Demonstration of an Alternative
Disposal of dredged material in the main channel, or thalweg, is an alternative disposal option for maintenance dredging. The material dredged from the Upper Mississippi River is clean...
A Methodology for Open-Water Disposal Site Selection
Pascagoula, Mississippi, is the major industrial region in coastal Mississippi. The existing project, completed in 1965, provides for waterborne transportation from the Gulf of Mexico...
Land Application of Dredged Material at Port Manatee
Maintenance dredging of approximately 600,000 cu yd of highly plastic clay was conducted in October 1983. This material was deposited on a nearly 200 acre tract of farmland in a depth...
Long-Term Planning for Dredged Material Disposal
The dredged material produced from maintenance of the channel in Upper Mobile Harbor (UMH) is disposed into confined upland disposal areas provided by the project's local...
Long-Term Maintenance Dredging PermIts--Florida's New Approach to Regulation and Its Implications for Federal, State, and Local Reforms
Florida has developed a long-term maintenance dredging permit process to reduce problems in obtaining regulatory approvals. Under Florida's new program, the term of the permit...
Design and Construction - Theodore Ship Channel
Environmental impacts, greater technological capabilities, and improved evaluation techniques make the disposal of large quantities of dredge material more complex and involved. Also,...
Implementation of EPA/Corps Site Evaluation Guidance
Past site evaluations have resulted in expensive and time-consuming field studies and a nationwide delay in final designation of interim sites. Recognizing the problem, a joint Corps/EPA...
Dredging Permit, a Case History
A case history of the federal, state and local permitting process for the dredging and disposal of dredged material of a tanker/barge terminal in Boston Harbor is discussed. The dredging...
Dredging for a new Port - Puerto Bolivar, Colombia
A major coal export terminal at Bahia Portete, Colombia, is being developed as part of the Cerrejon Coal Project - North Zone, where one of the world's largest coal mines...
Feasibility Study of Use of Dredged Material as Sanitary Landfill Cover in the New York/New Jersey Harbor Area
The feasibility of use of dewatered dredged material as cover material at landfills in the New York/New Jersey Harbor area has been investigated by the New York District, U. S. Army Corps...
Selection of Dredged Material Disposal Sites
Federal and state legislation regulating dredging of navigation channels along Maryland's Eastern Shore requires that local governing bodies provide the dredged material disposal...
Environmental Considerations of Thalweg Disposal
Disposal of dredged material in the thalweg or deepest portion of the Upper Mississippi River is one of several disposal alternatives that can be utilized. Aside from the mechanical/cost...
Return to search