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文章通过介绍复杂环境下的基坑开挖难题,可以通过采用分层、试爆开挖的方法,选择合理的炸药单耗、最大一段炸药量等因素,用来确定爆破孔网参数、爆破网路等设计。在城镇基坑爆破开挖时,针对周围建筑物及附近居民存在危险的难题,可以从爆破振动和爆破飞石两个方面去讨论,要严格控制爆破振动,以及飞石的爆点、传播路径、保护对象的三点防护措施要得当,为以后复杂环境下城镇基坑开挖提供参考。
By introducing the problem of excavation of foundation pit in complicated environment, the article can select blasting hole network parameter, blasting mesh Road design. Blasting and excavation of urban foundation pit, in view of the danger of surrounding buildings and nearby residents, can be discussed from the aspects of blasting vibration and blasting fly-stone. The blasting vibration and the explosion point and propagation path of fly-stone should be strictly controlled , Three protection measures to protect the object to be properly, for the future excavation of urban excavation in complex environment to provide a reference.