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某隧道洞口处有一个79 m高的砖砌厚壁烟囱,需要对该烟囱进行爆破拆除。在爆破前,拟定了爆破方案,对爆破缺口长度、高度、定向窗参数、布孔形式、装药结构、起爆网络等参数展开详细设计,并进行安全校核。爆破实践表明,本文拟定的爆破方案和技术参数可行,可为类似的工程提供参考。
There is a 79 m-high brick thick-walled chimney at a tunnel entrance, which is demolished. Before blasting, a blasting plan was drafted to conduct detailed design on parameters such as blasting gap length, height, directional window parameters, cloth form, charge structure and initiation network, and carry out safety check. Blasting practice shows that the proposed blasting program and technical parameters are feasible, which can provide reference for similar projects.