Application of Prediction of Water Content in Geophysical Exploration based on B

Abstract: This researeh is adopting neural network technology for the use of a number of known geoPhysical testing the well PumPing test data to the geophysical Parameters of aquifer discharge umts with single?hole modle composed of the training sample set，establishing the err BP Network forecasting model for regional geophysical methods unknown under ground water content Predietion， this will be major imProvemen to the traditional water content Prediction.

Key words: artiflcial net works:integrated geophysical methods:water content Prediction

1 Introduction

Water resources is a human production and life indispensable natural resources, biological survival of the environmental resources, with the water crisis intensifies and water quality deterioration, water shortages have evolved into the world paid close attention to the resources and environmental problemsone. Groundwater is an important part of water resources, human indispensable natural resources, its life, industrial and agricultural production, and urban construction, social and economic development plays a significant role.

In the North China Plain region, due to the large-scale development of groundwater use in the past 40 years, has been formed around Shijiazhuang, Hengshui, Changzhou and other cities of the three regional funnel. With the continued exploitation of groundwater resources, the composition of the groundwater resources component has changed significantly. According to different model results, the more flow in the deep water resources and clay layer released water accounts for about 75%, about 15% of the released water sand laminated, lateral recharge in only 10%. Non-compensation means that the status quo adopted most of the water from the aquifer storage resources, and has caused serious land subsidence, which also allows us to re-examine the use of groundwater resources.

Based on geophysical methods to groundwater in situ testing capabilities, with high efficiency, low cost, continuous measurement of other advantages, the use of geophysical techniques to predict the water content of the aquifer is expected to solve the above problem has become the hot topic of current research. Therefore, geological modeling technologies and integrated geophysical study the combination of aquifer water content forecasting methods have emerged. Ground of integrated geophysical techniques, three-dimensional distribution of the fine to identify aquifer and changes; to carry out ground geophysical technology research, precise computation of aquifer effective porosity, permeability, the effective saturation, shale content, and other geological parameters; Finally, geophysical parameter mathematical model, to carry out the moisture content of the aquifer, the prediction processing system.