The test results have proved that the compound non-coupling charging structure can reduce the temperature of the working face and the blasting vibration damage on the reserved frozen soil.
试验结果证明，复合不耦合装药结构可以降低工作面温度和减小对周围保留冻土爆破振动的损伤。
2
The results show that mighty compound cutting can give a good effect of sinking and blasting in hard rock shaft, and sinking velocity adopted for 2.