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English | Chinese |
heading excavation method of lower part of upper half cross-section | 上半断面下部导坑掘进法隧道开挖方法之一,即在全断面开挖过程中,遇到地质条件不稳定的岩层时,可采用上半断面和下部导坑同时爆破掘进的开挖方法施工 |
In most commercial explosives, only part of the ingredients react immediately at the detonation front, leaving a considerable part to be consumed by afterburning during the expansion phase | 大多数民用炸药在爆炸时、只有部分在爆轰波阵面起反应、尚有很大一部分在膨胀阶段进行二次燃烧时才消耗掉 |
In most commercial explosives, only part of the ingredients react immediately at the detonation front, leaving a considerable part to be consumed by aftercombustion during the expansion phase | 大多数民用炸药在爆炸时、只有部分在爆轰波阵面起反应、尚有很大一部分在膨胀阶段进行二次燃烧时才消耗掉 |
loose part of rock | 浮石在井下或露天采场中,因爆破参数选择不当或地质构造的影响,爆破区部分已被爆破松动但未崩落下来的岩石,参见 fragmented rock |