摘要
岩巷综掘遇到硬岩时,为了选择合理的松动爆破参数,使全断面硬岩体均能被顺利载割,文章基于地震波CT探测技术对深孔爆破后围岩表面强度弱化范围进行了测试,根据波速在不同介质中传播速度不同,通过爆破前后数据采样分析,得出了爆破后岩体表面强度弱化范围,据此,可采用该探测方法能对爆破参数设计起到较好的指导作用。
When the mine fully mechanized rock roadway heading was in hard rock, in order to select the rational releasing blasting parameters and to smoothly cut the full cross section of the hard rock, a test and measurement was conducted on the surface strength weakening scope of the surrounding rock after the deep hole blasting base on the seismic wave CT detection technology. According to the different spreading speed of the wave speed in the different medium, with the sampling and analysis on the data before and after the blasting, the surface strength weakening scope of the rock was obtained. Thus the application of the detection method could have good guidance to the design of the blasting parameters.
出处
《煤炭工程》
北大核心
2011年第6期94-96,99,共4页
Coal Engineering
基金
"十一五"国家科技支撑计划项目(2007BAK28B02)
安徽省自然科学基金项目(070414170)
关键词
CT探测
深孔爆破
硬岩体强度弱化对比分析
CT detection
deep - hole blasting
comparison analysis on strength weakening of hard rock
