Research On Comprehensive Technology Of Safe And High Efficiency Mining For The Complex Orebody Of Fozi Lead-Zinc Mine

Unstable roof and steeply inclined thin orebody is a common difficult mining, polymetallic mines tend to be this kind of ore body, the Buddha blunt pb-zn deposit of this ore body is most of the types, mining complex, the difficulty is big. Buddhist ore mining by shallow hole shrinkage stoping method for a long time, the production efficiency is low, the labor intensity is big, poor safety condition, has been unable to meet the requirements of mining sustainable development. In order to solve the Buddha lead-zinc mine complex ore body mining technical problems, carried out "--the Buddha lead-zinc deposit is safe and effective mining complex integrated technology research", in order to realize the Buddha mine safe and efficient mining and make full use of resources, realize the Buddha of the safe and stable production.Subject to the Buddha104orebody20-6011line10lines in the central part of the stope as the research object, the integrated use of mining engineering, rock mass mechanics, theoretical calculation and field test of the theory and method, to buddhist complex orebody mining method, drilling and blasting technology, the stope structure parameters and integrated technology such as pressure control conducted a series of research. In buddhist ore rock mass engineering geological survey and evaluation as the foundation, using fuzzy mathematics comprehensive evaluation method to select out the Buddha the optimal mining method in mine plan:in the deep hole of sublevel caving together shrinkage is made between flat-back cut and fill mining method; Through theoretical calculation, the paper analyzes the stope stability, recommend the reasonable stope structure parameters; Through the series of blasting crater tests, a drilling and blasting parameters for study, recommending the reasonable drilling and blasting parameters.Subject project research results show that the deep hole of sublevel caving together stay in ore mining is made between flat-back cut and fill mining method is efficient, drilling and blasting parameters of stope structure parameters and reasonable, to the Buddha of the safe, efficient and economic production has important guiding significance. The research results of similar difficult mining has good reference value.