In constructing Chu - Da road project and XiEr river power station, the technique with repeatedly expand crack by controlled blasting is used.
结合楚大公路西洱河电站控制爆破开挖工程，阐述了“多次扩裂控制爆破”的工艺。
In constructing Chu - Da road project and XiEr river power station, the technique with repeatedly expand crack by controlled blasting is used.
结合楚大公路西洱河电站控制爆破开挖工程，阐述了“多次扩裂控制爆破”的工艺。
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