Research and Application of VCR Blasting Technology in Gob Area
Filling method is used to treat mined-out area in Hulun Buir SD-GOLD mine.Because of the low efficiency,poor working conditions and poor safety of the common method,the safe and efficient construction technology of filling wells in goaf has become the key.According to Livingston's theory of blasting hopper,the optimum blasting parameters were determined through a large number of tests carried out in the early stage of blasting,the VCR method has achieved good results in the filling wells in the blasting goaf,and the filling wells with a diameter of 2.0 m and a depth of 17.5 m have been successfully excavated.In this paper,the blasting parameters,charge structure,hole-blocking method and problems in the construction process are analyzed and summarized,providing a certain reference for similar mines.
NETL
NSTL
万方数据
