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Author: Dali Gu Publisher: ISBN: Category : Languages : en Pages : 212
Book Description
"The visco-elastic model is applied to analyze and predict the land subsidence in Bangkok, Thailand. The results demonstrate that the visco-elastic model can yield a satisfactory prediction of consolidation that is better than that obtained with the classical Theis-Jacob approach." --
Author: Dali Gu Publisher: ISBN: Category : Languages : en Pages : 212
Book Description
"The visco-elastic model is applied to analyze and predict the land subsidence in Bangkok, Thailand. The results demonstrate that the visco-elastic model can yield a satisfactory prediction of consolidation that is better than that obtained with the classical Theis-Jacob approach." --
Author: E.C. Donaldson Publisher: Elsevier ISBN: 0080542093 Category : Science Languages : en Pages : 519
Book Description
Subsidence of geologic surface structures due to withdrawal of fluids from aquifers and petroleum reservoirs is a phenomenon experienced throughout the world as the demand for water and hydrocarbons increases with increasing population growth. This book addresses the definition and theories of subsidence, and the influences of unique conditions on subsidence; it includes discussions of specific field cases and a basic mathematical model of reservoir compaction and accompanying loss of porosity and permeability. The book is designed as a reference for readers giving immediate access to the geological events that establish conditions for compaction, the mathematical theories of compaction and subsidence, and practical considerations of field case histories in various regions of the world.
Author: Prepared by the Land Subsidence Task Committee Publisher: ISBN: 9780784483329 Category : Electronic books Languages : en Pages : 251
Book Description
Investigation of Land Subsidence due to Fluid Withdrawalprovides a detailed overview of the occurrence and control of land subsidence due to fluid withdrawal.
Author: American Society of Civil Engineers Publisher: ISBN: 9780784415702 Category : Groundwater Languages : en Pages : 260
Book Description
Investigation of Land Subsidence due to Fluid Withdrawal provides a detailed overview of the occurrence and control of land subsidence due to fluid withdrawal.
Author: Yi Liu Publisher: ISBN: Category : Civil engineering Languages : en Pages : 346
Book Description
Land subsidence attributable to the compaction (consolidation) of aquifer systems is recognized to be a geological hazard. It is an environmental consequence of groundwater withdrawal in many cities and other areas worldwide. Prediction of land subsidence due to subsurface fluid withdrawal (whether the fluid is oil, gas, water, stream, or geopressure brine) depends on the quantitative identification of parameters for a selected theoretical model. A new inverse algorithm (InvCOMPAC) for finding transient land subsidence parameters due to the combined compression and expansion of one or more confined aquifer systems in response to ground fluid withdrawal is developed in this dissertation. It consists of combining the Newton-Raphson adjustment algorithm and Helm's one-dimensional finite-difference compaction (or consolidation) model (COMPAC). The subsidence (or consolidation) model can be replaced by any appropriate model. This inverse code (or algorithm) identifies five parameters that control transient land subsidence at a site of interest: vertical hydraulic conductivity of compressible aquitards, K', nonrecoverable S' skv, and recoverable S'ske specific storage of the aquitards, specific storage of the aquifer, S S, and an initial vertical distribution, p' max0, of maximum past preconsolidation pressure within the confined aquifer system. For computational convenience, p'max0 may or may not be considered to be uniform. K', S'skv, S'ske, and S S are constants for the constant-parameter option or indicate only the initial values for the stress-dependent parameter option of Helm's model. An initial set of estimated values for these five parameters is found to be necessary in order to apply the inverse algorithm to an idealized compressible confined aquifer system. A new graphical-analytic method is introduced for estimating a realistic initial set of these values. The idealized data for developing this method is from COMPAC's calculation of compression and expansion in response to both long-term nondeclining sinusoidal boundary stress and also long-term declining sinusoidal boundary stress. This methodology is based on delay time constants of clay consolidation, the elastic hysteresis loop of clay stress-strain relationships, and Darcy's law. An investigation of this idealized model shows that the relative error of these five parameters found by applying the inverse model to calculated compaction using initial values of the parameters simply obtained from this methodology is 1.2∼6.3%. (Abstract shortened by UMI.). -- Abstract.
Author: D.J. Reddish Publisher: Elsevier ISBN: 0444598340 Category : Science Languages : en Pages : 541
Book Description
Surface subsidence is recognised as a problem in most countries, particularly those with significant mining and other underground resource extraction industries. This book addresses the problems relating to subsidence whether caused naturally, or arising from mining or other forms of underground extractive activity.The main purpose of this book is to bring together subsidence knowledge, experiences and research findings in many countries and rationalise such information especially in respect of its particular field of application. Emphasis has been given to collating field data on subsidence from different countries in order to make direct comparisons. Prediction of subsidence, particularly its occurrence and general characteristics has been seen as an important area where the book can contribute significantly in terms of reviewing available knowledge, methods, scope of application and orders of accuracy achieved. The book also examines methods of controlling subsidence and discusses the response of surface structures to and protection against subsidence.
Author: Dali Gu
Author: Dali Gu
Author: E.C. Donaldson
Author: Prepared by the Land Subsidence Task Committee
Author: American Society of Civil Engineers
Author: 
Author: Thomas L. Holzer
Author: Yi Liu
Author: Joseph Fairfield Poland
Author: 
Author: D.J. Reddish