| The behavior of the radio nuclides transportation in groundwater is a focal point in the course of disposing radioactive waste underground, and it also is one of the key problems about the environment evaluation of HAE waste disposal field. Because of wide distribution and low porosity and high mechanics strength, most of radio nuclide waste warehouses in the world are built or are going to built in bedrock since the standard program about radioactive waste disposing carried in the 1970s. But faults and joints are often found in bedrock, which are the major channels the nuclides moved to the outer environment. So it is important to study the nuclide transportation in the groundwater, however this study is a difficult problem because the fracture distribution in bedrock is complex in nature.Under the environment of the developing the West part of China and the protecting the natural environment, our government cares much about the radioactive waste disposition which is the product of some nuclear test. As a subject about the environment evaluation of HAE field, this paper mainly researches the characteristic of the fracture water moving in the bedrock fractures in HAE field, and studies the element '"Sr which is a high toxicity nuclide transportation in fracture water, and predicts the pollution effect of the element ^Sr to well 3 which is a sole well in the HAE region when radioactive waste warehouse is destructed sometime in future. The contents of this paper include the following several aspects:(1) A model of the fractures leakage is built through counting and analyzing the wealthy geological records of HAE field, and a model of the fracture water transporting is also built according to the fracture water condition of its recharge and its runoff and its discharge in HAE field;(2) This paper studies the chemical behavior and the migration parameters of the elenent Sr2+ in ground water in HAE field, the main contents include:â‘ The presence form of the element Sr in ground water is analyzed by way of the rmodynamics;â‘¡The absorption mechanism that granite and sand stone absorbs Sr element is analyzed based on theory and experiment testâ‘¢The diffusion parameters of the element Sr in water and in granite and in sand stone are researched with laboratory experiment test;â‘£The partition coefficient of sand stone and granite to Sr is tested by the batch way.(3) this paper builds a model of the transportation of the element 90Sr in the fracture water in HAE field. With this model, this paper models and predicts the transportation of the element 90Sr in the fracture water in HAE field under various circumstances when the HAE radioactive waste warehouse is undermined.There are three difficulties and key problems in this papaer: :the first problem is what is the dominance bearing of the leakage fractures, and how the bedrock fracture water distribute, the second is how to test the complex chemical behavior in experiment way and quantify the relative parameters, the last question is how to number the transportation of the element 90Sr and its pollutionTo solve the three problems, this paper does lots of work and come to the prospective order, the creativities in this thesis as follow:(1) The dominance bearing of the leakage fractures and the distribution feature of the fracture water are ascertained based on rich geological data ,These basal researches are very important ,which are the premises to build the transport model of the fracture water in HAE field.(2) This paper test the migration parameters of the element Srsystematically by theory and the experiment set designed by self ,it provide theon quantification parameters that the migration model of the element Sr in thefracture water in HAE field. .(3) The software MODFLOW is a authority software in the world edited by professors Chunmiao Zheng etc, this paper uses the software successfully to model the pollution area and pollution concentration of the element 90Sr in fracture water in HAE...
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