The retreat slicing blast of VCR was replaced by side blasting with more than 10 thousand tons of blasted ore each time. And the blast patten in VCR has been improved.
用侧向崩矿取代VCR法退后分层落矿方式，每次爆破矿石量可达数万吨至10万吨，改进了VCR法的爆破崩矿方式。
The retreat slicing blast of VCR was replaced by side blasting with more than 10 thousand tons of blasted ore each time. And the blast patten in VCR has been improved.
用侧向崩矿取代VCR法退后分层落矿方式，每次爆破矿石量可达数万吨至10万吨，改进了VCR法的爆破崩矿方式。
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