Geophysical model simulation on detection of the range of the in-situ leaching solution

Process situ-leaching sandstone-type uranium deposits, the intrusion of the leaching solution will cause groundwater properties and rock pore structure changes, the electrical characteristics of the rock changes resulting in abnormal electrical. Classification and study of factors affecting the electrical properties of the rock, the main factors caused by the change of the electrical properties of rock to explore the intrusion of leaching solution. These characteristics of the main factors, the initial screening of geophysical exploration methods suitable for the detection range of leaching solution. According to the geological and geophysical characteristics of sandstone-type uranium deposits, the use of the computer to establish to dip mine leaching solution, intrusive geological model of the seam, and generate a model geophysical forward data. The use of screening out geophysical exploration methods to simulate the geological model of the leaching solution range detection, and forward the data to the model inversion calculation. The calculation results are treated as images used to make the delineation and description of the the underground leaching solution, spread morphology. Analog detection model using different geophysical methods, and the results compared, analysis, select the model high resolution the leaching solution the range delineated more accurate geophysical methods. Geophysical exploration methods will be screened again analog detection, to constantly ad- just the parameters of the method, in order to find the best detection parameters, to provide a reference for the actual measurement. Inversion algorithm is optimized to improve operational efficiency and image resolution and accurate positioning capability. Model test verifies the change of electrical abnormalities can be detected, and the ability to take advantage of the changes caused by the abnormal inversion calculation, and ultimately determine the bounds of the leaching solution. The model test screened appropriate geophysical methods and processing ideas for the on-site measurements, which has important guiding significance. (author)