复杂条件下山体开挖控制爆破技术的应用  

Application of controlled blasting technology in mountain excavation under complex conditions

作　　者：张计璨 林飞 刘武军 刘丰华 ZHANG Jican;LIN Fei;LIU Wujun;LIU Fenghua(Huaibei Blasting Technology Research Institute Co.,Ltd.,Huaibei 235000,China;Hubei Kailong Chemical Group Co.,Ltd.,Jingmen 448000,China)

机构地区：[1]中煤科工集团淮北爆破技术研究院有限公司,安徽淮北235000 [2]湖北凯龙化工集团股份有限公司,湖北荆门448000

出　　处：《煤矿爆破》2020年第2期1-4,8,共5页Coal Mine Blasting

摘　　要：某公司场地平整工程爆破条件极其复杂,开挖山体两侧有建筑设施,正面有高速公路和县道。为了控制开挖滚石、爆破振动、爆破飞石等对周边建筑物、桥涵、预埋管线、公路等的影响,采用弱松动、控制单响(单段)最大药量、逐孔爆破、分散装药分段爆破、轴向间隔和径向不耦合装药等精准控制爆破、综合降振技术,边坡工程采用预裂爆破技术稳定边坡,保障了山体开挖作业期间高速公路、县道的正常通车,且未影响公司的安全生产。The blasting conditions of the ground leveling project of a company are extremely complex.There are buildings and facilities on both sides of the excavated hill,and expressways and county roads on the front of the excavated hill.In order to control the impact of rolling stones,blasting vibration,blasting flying stones on surrounding buildings,bridges and culverts,pre-embedded industrial water pipes and highways during the excavation of mountain bodies,precise controlled blasting and comprehensive vibration reduction techniques such as weak loosening,controlling the maximum single-shot(single-segment)charging,hole-by-hole blasting,dispersed charging sectional blasting,axial spacing and radial uncoupled charging are proposed.Pre-splitting blasting technology is used to stabilize the slope in slope engineering.The technology guarantees the normal opening of the frontal expressway and county road during the excavation operation,and does not affect the safe production of the company.

关 键 词：控制爆破 延时 复杂条件 爆破振动 

分 类 号：TD235[矿业工程—矿井建设]