| With today's world of rapid economic and social development of traditionalenergy such as coal, oil, natural gas, such as the economy has been far from enough tomeet the needs of development and environmental protection, and this urgent need forus to find a new clean and efficient alternative energy sources. Natural uranium is theraw material to produce nuclear weapons, nuclear submarines and nuclear power is thebasic raw material, uranium resources are therefore an extremely important andsensitive strategic mineral resources and energy in the building of national defenseand the national economy an important position with a double. Uranium resources andthe characteristics of clean and efficient is the production of nuclear materials, just tomeet our needs. China's Government has drawn up a nuclear power development plan(up to 2020, the country's total nuclear power capacity will account for 4% of installedcapacity to reach 40 million kilowatts, and then building the goal of 18 millionkilowatts), the ultimate in safety and security of uranium resources to be baseddomestic principles, established to increase exploration efforts, as soon as possible tofind out the "family property" (such as with Zhang, 2007), the rational development ofdomestic resources development strategy. Therefore, the domestic uranium resourcesto accelerate the exploration and to scientific research, search for new uraniumresource base is the work of China's uranium geology of the strategic tasks facing. Inorder to search for suitable uranium resources, nuclear industry has done a 280"Kangdian middle-south axis direction uranium prospecting research" subject.This article depends on the subject of nuclear industry 280 "South central theKang Yunnan Earth axis Section Uranium mine Prospecting Direction Research", theLaoheishan area is in research subject measures the area. The Laoheishan area locatedat the Kang Yunnan earth axis south central the section, west the Yangzi paraplatformthe reason, is a long-term disintegration sticks out the area, the appearing stratummainly can manage theHuili group for the proterozoic group. Huili group couldmanage the group and the kunyang qun, the Yanbian group, the Xide group and so onconstituted the Kang Yunnan earth axis fold basis together. Middle the Kang Yunnan earth axis sticks out for the anteklise, big area appearing platform basis. Basis mainlyfor late antique early proterozoic era crystalline basement and mesoproterozoic foldbasis constitution. Above the fold basis to the Zhendan world cap rock cover early, forthe accordant connection relations, in the proterozoic group stratum does not growseveral planes of unconformity, on between the proterozoic group nearby the plane ofunconformity has the uranium mine () the spot to deliver, therefore in the earth axis,south the section visible becomes the plane of unconformity uranium deposit theprospect. In the above research foundation, unifies the ore deposit which in the areaalready discovered (spot) the ore deposit geological feature, verified basicallyinvestigated the region radioactive geophysics field distribution and the change rule,had understood in different stratum radioactive element distributed rule, and using theneutron activation analysis, as well as methods and so on uranium radium balancedhas discussed the uranium with other metallic element between correlationaldependence, summarized the research area mineralization rule, selected a vegetablegarden - ship - eight Hornberg - to burn down the village - vegetable garden for therich uranium land sector.This article take the new uranium metallogenic theory, the mineralization pattern,the prospecting criterion as the instruction, profits from the domestic and foreignuranium mine investigation the new achievement, the new understanding, collects thepredecessor material through the system, carries out the target-oriented radioactivesurvey and the multi-disciplinary synthetic studies unifies, investigated with emphasishad measured that in the area the radioactive unusual spot, the belt, the regionradioactive geochemistry field distribution and the change rule, had determined therich uranium blanket body and the oriferous layer position, have forecast the uraniummine rich uranium land sector.The radioactive survey is mainly obtains the massive primary data through theground Gamma power spectrum survey, then according to "EJ/T363-1998 GroundGamma Power spectrum Survey Standard" to the data which obtains utilizes MapGissoftware processing, obtained the Laoheishan to measure that area each measuringpoint always said the counting (pulse /1800〞) the actual material chart (attachedfigure 1), uranium content (×10-6) actual material chart (attached figure 2), thoriumcontent (×10-6) actual material chart (attached figure 3), potassium content (%) actualmaterial chart (attached figure 4), uranium content (×10-6) Contour map (attachedfigure 5), thorium content (×10-6) Contour map (attached figure 6), potassium content(%)Contour map (attached figure 7), thorium/uranium Contour map (attached figure8). And obtains us according to the ground Gamma power spectrum survey's data to beinterested the spot, brings back in these spot sample, has made the neutron activationanalysis and the uranium radium in the indoor is balanced, with the aim of furtherconsummating and verifying the radioactive unusual spot which, the belt the groundGamma power spectrum survey obtains. The basis of the above-mentioned study, combined with the region's mineraldeposits have been found (point) of the deposit, geological features, the basicidentification of a geophysical survey of regional distribution of radioactive andchanges in the law, understand the different strata in the distribution of radioactiveelements and the use of neutron activation analysis, and methods such as uraniumradiumequilibrium of uranium and other metal elements in the correlation between,summed up the law forming the study area, the delineation of the vegetable garden - aboat - Dysosma Hill - set fire to the village - vegetable garden for the uranium-richLot.
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