北京矿冶研究总院与焦家金矿,最近在本矿节理裂隙较发育的608采场,进行了长锚索加固顶板的工业试验。四十多天的时间完成40根长锚索的施工。锚固后,用地音仪测定的岩音频度,较锚固前大大降低,顶板趋于稳定状态。 Beijing Research Institute of Mining and Metallurgy and Jiaojia Gold Mine recently conducted an industrial test of roof reinforcement with long cables in the 608 stope with more developed fractures in this mine. More than 40 days to complete the construction of 40 long cable. After anchoring, the frequency of rock sound measured by the ground acoustic instrument is much lower than that before anchoring, and the roof tends to be stable.