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本文通过工程实践，探讨存在端部夹制效应和近防护对象复杂条件下，通过合理布药，克服条形药包端部效应，达到控制爆堆边界，松动控制爆破的设计原理及施工经验。
In this paper, through engineering practice, we discuss the design principle and construction experience of controlled blasting heap and loose control blasting by means of rational dispensing and overcoming the end effect of bar-shaped kits under the condition of end-clipped effect and near-shield object.