10:00 〜 10:15
[AGE29-05] Analysis and Research the Hydraulic Parameters and Related Sensitivity Changes of Groundwater Layers during Pumping Tests
キーワード：敏感性分析、抽水試驗、水力參數
Most engineering, physical, and chemical systems can be viewed as input–output models that relate the output information to the appropriate input parameters. Then, a question arises: How do the errors in the input parameters influence the outputs, or does a small input perturbation cause a large change in the output. So, researchers try to use sensitivity analysis to solve this problem, sensitivity analysis is an important component of modeling test, which devised to study such questions and, in general, to study the influence of uncertainties in the input data (hydraulic parameters) on the outputs (groundwater flow changes). This can be useful to understand the operating rules of the groundwater system. The major research area includes regulating the transport of hydrogeological contamination, planning groundwater protection measures before land development and managing groundwater resources.
This study will develop a groundwater sensitivity analysis work which based on an adjoint method, the main part includes expand the sensitivity analytical solution (e.g., adjoint state equations, boundary conditions…et al) and find a way to efficient making multi-dimensional sensitivity map under pumping conditions in transient heterogeneous groundwater parameter fields, hope to be able to obtain more accurate and intuitive sensitivity impact results in three-dimensional space.
The study results will be numerically verified with the VSAFT2 and VSAFT3 numerical model, which is developed based on the adjoint method. A multi-well work area will be created that can simultaneously calculate the sensitivity coefficient change rate of multiple observation wells and a single pumping well. This will help to more effectively simulate the water flow and sensitivity at the field pumping site, and effectively expand the results of previous literature that only studied dual-well experiments.
This study will develop a groundwater sensitivity analysis work which based on an adjoint method, the main part includes expand the sensitivity analytical solution (e.g., adjoint state equations, boundary conditions…et al) and find a way to efficient making multi-dimensional sensitivity map under pumping conditions in transient heterogeneous groundwater parameter fields, hope to be able to obtain more accurate and intuitive sensitivity impact results in three-dimensional space.
The study results will be numerically verified with the VSAFT2 and VSAFT3 numerical model, which is developed based on the adjoint method. A multi-well work area will be created that can simultaneously calculate the sensitivity coefficient change rate of multiple observation wells and a single pumping well. This will help to more effectively simulate the water flow and sensitivity at the field pumping site, and effectively expand the results of previous literature that only studied dual-well experiments.