[en] Through additional exploration, the spacial distribution rules of the ore bodies at Gaoxi uranium deposit were found out. Taking into account the characteristics of ore bodies with complex shapes and changeable occurrences, different mining method were selected, that is, upward horizontal cut-and-dry filling method, short-hole shrinkage stoping method and benching long-hole caving method. The application of the three methods to this uranium deposit was introduced, their application effects were evaluacted, and the measures of improvement were put forward aimed at existing problems. (authors)

[en] Through the surface of the patio or shaft construction in weathered rock layer and surface soil, it is one of the problems in the construction of roadway excavation. Introduced a mine shaft were used mining method from the top to down construction method (i. e. a general construction method) that is common through two main filling Patio, using the method from down to top of digging through the mountain tunneling of two main return air patio is successful practice of less investment and high speed, point out the conditions for its application. The latter method is neither a general construction method, nor is it a special construction method

[en] Aimed at problems of long term existed low mining efficiency and high cost in production of typical Gaoxi uranium deposit among southern hard rock with low grade of uranium deposit, also by support of the improvement and perfection of low grade uranium deposit hydrometallurgical technique through collection partition of irregular and disperse deposit, high efficient stage deep hole open stoping followed by back-filling method was discussed. Technical measure, technology characteristic, result and experience of the method application were basically summarized. And application prospect in southern Jiangxi low grade uranium deposit was probed. (authors)

[en] Stope leaching of uranium mining method compared with the conventional method, has the advantages of low investment, high efficiency and long mine (waste) stone reduced about 70%, less pollution, more suitable for the need of low cost uranium deposit mining. In recent years, with the deepening of mining, due to blasting heap, heap leaching of ore block, corner, pipe network and other key technical parameters of stope leaching of uranium stope limit, the heap appears low leaching rate, leaching cycle is long, the backlog of enterprise funds fatal weakness, affect the development of enterprises. In this paper, aiming at the existing problems of stope leaching, combined with the actual situation of a uranium mining, with the explosion of shrinkage method for optimization of stope leaching technology, reasonable and improve the recovery rate of resources, as the capacity to find a new breakthrough in uranium. (authors)

[en] A shallow hole shrinkage mining stope leaching method was used to recover uranium in a uranium mine. The problems such as large blasting fragmentation and uneven distribution of drill lixiviant resulted in low leaching rate, long leaching cycle and low production efficiency during production. Aimed to problems and combined with the actual situation of the uranium mine, the shallow hole shrinkage mining method was improved, that is, according the results of geophysical logging, high grade ores and low grade ores were blasted and mined respectively, and the high grade ores were sent to the surface and treated by heap leaching process, and low grade ores were leached in stope. This improved method was called shrinkage mining method with respective blasting and mining. Compared with shallow hole shrinkage mining stope leaching method, the recovery rate of the improved method was increased by 17.2%, thereby maximizing the recovery of uranium resources. (authors)