In this paper, the instability criterion of blasting demolition in different collapse techniques of frame structure has been studied in the name of the blasting height of pillar.
本论文通过立柱爆破高度来对不同坍塌方式下的框架结构爆破拆除失稳判据进行研究。
Based on practice of excavating piles, the reasons conditions and preventive measures about damage by blasting on supporting rocky layer, pillar ground support and concrete in pile have been proposed.
依据大量掘桩实践，论述了掘桩爆破对持力岩层、护壁、桩间岩柱、邻桩支护和新浇砼损伤的原因、条件和防范措施。
The paper introduced the blasting design for recovery of the crown pillar in detail.
文中较详细地介绍了该顶柱回采的爆破设计。
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