泄压式爆破坑的设计

Design of Pressure Relife Type Blasting Pit

封闭式爆破坑生产时振动大、噪声大，并且经常有碎块飞出伤人，国家已规定不允许使用。但由于历史的原因，目前使用的还不少。泄压式爆破坑可以有效的减轻振动和噪声，且无碎块飞出，介绍了泄压式爆破坑在设计上应注意的问题及思路。

Because of historical closed type of blasting pit is now used in many places. During production it has a great noise and vibration and also is often harmful to human due to flying crushed scrapes. Our government has stipulated that the closed type of blasting pit is prohibited. Pressure relief type of blasting which can greatly reduces noise, vibretion and avoid the harm due to flying crushed scraps is introduced. Some problems deserved attention and our thinking about the design of this pressure relief of blasting pit are discussed.