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| 水孔爆破通常,炸药遇水后爆炸性能会恶化，特别是铵油类的粉状炸药。在水孔中使用时,炸药必须采用防水措施或采用抗水炸药。电雷管有一定的耐水性。用火雷管起爆时，在导火索与火雷管连接的部位,必须采取防水措施。当水孔中水压比较高时，最好采用耐水压的炸药和雷管 | |||
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