张迅
ZHANG Xun

• 1:中铁隧道局集团有限公司

摘要(Abstract)：

为了解决隧道工程中的超、欠挖问题,进行了一系列的爆破参数优化试验,采用固、水、气三相不耦合装药结构,将隧道半孔残留率从优化前的50%～60%提高到优化后的90%以上,有效地提高了围岩的稳定性,比传统的耦合装药和轴向空气不耦合装药技术爆破增效作用明显。同时给出了掏槽孔最佳的装药结构:固、水、气轴向不耦合系数在1.5～2.33之间,周边孔采用空气介质,偏心不耦合系数为2。可为类似工程提供经验借鉴。
In order to solve the problem of over-excavation and under-excavation in tunnel engineering, a series of blasting parameters optimization experiments were carried out. The solid-water-gas three-phase decoupled charge structure was adopted, which increased the half-hole residual rate of tunnels from 50%-60% before optimization to over 90% after optimization, and effectively improved the stability of surrounding rock. The blasting synergy effect was more obvious than that of traditional coupling charge and axial air decoupled charge technology. At the same time, the optimum blasting parameters of this project are given: the axial decoupling coefficient of solid, water and gas is 1.5 to 2.33, and the eccentric decoupling coefficient of air medium is 2.It can provide experience for similar projects.

关键词(KeyWords)： 光面爆破;掏槽孔;周边孔;不耦合装药;参数优化
smooth blasting;cutting hole;surrounding hole;decoupling charge;parameter optimization

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 张迅
ZHANG Xun

参考文献(References)：

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