|
Description:
|
This dissertation is composed of three parts of major contributions .
In Chapter II , we discuss analytical study of contaminant transport from a finite source in a finite -thickness aquifer . This chapter provides
analytical solutions of contaminant transport from one - , two - , and three -dimensional finite sources in a finite -thickness aquifer using Green's function method . A library of unpublished analytical solutions with different finite source geometry is provided . A graphically integrated software CTINT is developed to calculate the temporal integrations in the analytical solutions and obtain the final solutions of concentration .
In Chapter III , we obtained solutions of groundwater flow to a finite -diameter horizontal well including wellbore storage and skin effect
in a three -dimensionally anisotropic leaky aquifer . These solutions improve previous line source solutions by considering realistic well geometry and offer better description of drawdown near the horizontal well . These solutions are derived on the basis of the separation of the source and the geometric functions . The graphically integrated computer program FINHOW is written to generate type curves of groundwater flow to a finite -diameter
horizontal well . The influence of the finite -diameter of the well , the wellbore storage , the skin effect , the leakage parameter , and the aquifer anisotropy is thoroughly analyzed .
In Chapter IV , a general theory of groundwater flow to a fractured or non -fractured aquifer considering wellbore storage and skin effect is
provided . Solutions for both leaky confined and water table aquifers are provided . The fracture model used in this study is the standard double -porosity model . The storage of the aquitard (the leaky confining layer ) is included in the formula . A program denoted FINHOW2 is written to
facilitate the calculation . Sensitivity of the solution to the confined versus unconfined conditions , fractured versus non -fractured conditions , and wellbore storage and skin effects is analyzed . |