Dexing The Copper Fujiawu Mining Area Geological Hazard Assessment

In order to keep and increase the copper raw material self-sufficient rate of Jangxi Copper Co. Ltd and prolong the service time of Dexing Copper Mine, Dexing Copper Mine has already started to mine the copper-stored areas of Fujawu. According to related national requirements, evaluation of the geological disaster on the surface mining of Fujawu area is needed, and this research work is to provide basis and reference of the geological disaster precautions or building projects. At the same time, we have used all kinds of the geological disaster evaluating methods in practices and have tested all of them.At the basis of many detailed field survey and analysis of the collected data, we have made qualitative analysis and half-quantitative analysis for the geological disaster in evaluating areas. For the evaluated objects with obvious characteristic and well-known stability affecting factors, we adopted half-quantitative analysis methods to determine P (The cost of the import of stability affecting factors) and K (The cost ofstabilization), to count the stability coefficient F ( F = ΣP_iK_i), andthen to make evaluation. On the other hand, for some integrated and all-around evaluating objects, we adopted qualitative analysis methods. In addition, this paper put forward several kinds of new methods to determine P.At this work, we used the methods mentioned above to analyze and evaluate the natural geological disaster and the geological disaster which caused by building in the mining areas of Fujawu, to analyze and evaluate the geology character and stabilization of the surface mining slopes, stone discarded heaps, reservoir dam, mining hole, tunnels ··· etc. All of the work has provided basis and reference for designing and building of the building projects. At the same time, we have gotten a good result after used and tested the geological disaster evaluating means in practices.