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Research on Blasting Fragmentation and Charge Weight in Simulating Deep Water

机译：深水模拟中的爆破破片与装药量研究

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Using simulating deep water blasting pressure vessel, the explosion energy was researched under 0. 6m water depth and from 5. 6m to ISO. 6m simulating water depth using by 8# detonator. The results show that specific shockwave energy keeps invariant although the water depth changes, but the specific bubble energy will decrease with water depth increasing, which lead to the decrease of total explosion energy. The influence of fragmentation on explosion energy was researched by using 0. 22m high cement mortar test block at the same water depth and charge, which blasting radius is 0. lm. The blasting fragmentation was screened which minimum side length is divided into three zone. The results show that the small and middle block decreases gradually with simulating water depth from 5. 6m to 90. 6m, but the big block increases obviously, when the water depth exceeds 110. 6m, the test block only appears crack and can not disintegrate. Based on this, using by the same test block, the experiment was carried by increasing detonator charge weight in the water depth of 30.6m, 50. 6m, 70. 6m and 90.6m where the big block is relatively concentrate. The experimental results show that the distribution of small block is irregular obviously, but middle block increase, big block decrease gradually. When the big blasting block is controlled at the 0%, 10%, 20%, 30%, 40%, respectively, the relationship curves between charge weigh and water depth and regression calculation formula were obtained by data calculation, which is from the big block control rate. The research results have reference value for the blasting design under different depth of water and unit consumption calculation.
机译：通过模拟深水喷射压力容器，研究了在0. 6m水深和5. 6m至ISO下的爆炸能量。使用8号雷管模拟6m的水深。结果表明，虽然水深变化，比冲击波能量仍保持不变，但随着水深的增加，比气泡能量会减小，导致总爆炸能量的减小。在相同的水深和水量下，采用0. 22m高水泥砂浆试块研究了破碎对爆炸能量的影响，爆破半径为0. lm。筛选出爆破碎片，将其最小边长分为三个区域。结果表明，随着水深从5. 6m增加到90. 6m，中小块逐渐减小，但当水深超过110. 6m时，大块明显增加，试块仅出现裂纹而不能崩解。 。在此基础上，使用相同的试块，通过在大块相对集中的30.6m，50。6m，70.6m和90.6m的水深中增加雷管的装料重量来进行实验。实验结果表明，小块分布明显不规则，但中块增加，大块逐渐减少。大爆破块分别控制在0％，10％，20％，30％，40％时，通过数据计算得到装药量与水深的关系曲线和回归计算公式。块控制率。研究结果对不同水深和单位耗水量的爆破设计具有参考价值。

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