摘要
自由面的状态是影响爆破效果的重要因素之一。首先介绍现场施工过程中出现的自由面存在大脚跟、裂隙、溶洞以及软夹层现象,分析了不同自由面状态对爆破效果的影响,然后针对不同的自由面状态分别提出了具体的解决措施,并进行了现场台阶爆破试验。结果表明:针对不同自由面状态所采取的解决措施是可行的,爆破后块度均匀,减少了大根底和飞石的产生。
The state of free surface is one of the important factors which influence the blasting effect. Firstly, the major fissure and heel, and karsts cave and soft interlayer phenomenon existing in the free surface in the process of the on-site construction were introduced, and the free surface of different states blasting effect were analyzed. Then according to the different state free surface ,the specific measures were put forward, and the field test bench blasting was done. The results showed it feasible to take different measures according to different free surface conditions. After blasting the blocks are uniform and the bedrocks and flying rocks generated were reduced.
出处
《金属矿山》
CAS
北大核心
2012年第3期52-55,共4页
Metal Mine
基金
贵州省科技计划项目(编号:SY2010365)
关键词
台阶爆破
爆破参数设计
爆破效果
自由面
Bench blasting, Blasting parameter design, Blasting effects, Free surface
