controlled chamber loose blasting 硐室松动控制爆破
chamber controlled blasting 硐室控制爆破
chamber loose controlled blasting 洞室松动控制爆破
This paper introduces controlled blasting technology on signal chamber of pit-bottom and main haulage roadway, which are of complex condition, lithological character and highly security.
介绍了采用控制爆破技术施工位于井底车场及主要运输大巷的信集闭峒室，条件复杂，岩性变化大，要求安全性高。
The effect of throw out blasting can be controlled effectively by adopting plane strip shaped charge in chamber blasting engineering practice.
在硐室爆破工程中应用平面条形药包可以有效地实现对抛掷的控制。
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