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DESIGN AND APPLICATION OF ROCK BLASTING ON THE ROCK ABOVE YUNNAN ALUMINUM PLANT TUNNEL

Miao Yangang(Kunming University of Science and Technology,Kunming 650093)Li Tianhua Lin Peiyuan(Kunyang Phosphorus Mine Engineering Corporation,Yunnan 650612)  
This paper introduces the design and application of rock blasting on the surface of tunnel at Yunnan Aluminum PlantThe final border of blasting is only 17m away from the tunnel topThe total rock volume of blasting is 127500m3The influence of blasting on tunnel can be avoided or lessened byreasonable choosing of blasting parameters,controlling the most heavy decked charging quantity of every detonating and taking effective and safety measures of technology
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