深井巷道围岩体声波特性及其规律

Acoustic Characteristics of Surrounding Rock in Deep Roadway and its Regularity

为掌握深井巷道松动圈的范围及松动圈内岩石破损程度的变化规律,对云南会泽铅锌矿950 m深井巷道进行现场声波测试。测试结果表明:不同的岩性,具有不同的声波特性,在松动圈范围内,岩体声波特性变化趋势一致;与上部测试结果相比较,松动圈的范围明显增加。在7种不同岩性的巷道围岩中,布置了10个测孔,应用单孔法进行声波测试,并对测试结果进行拟合,获得了深井巷道围岩松动圈范围内声波速度变化规律的数学表达式。为深部岩体的声波特性研究提供可靠的参考依据。

To grasp the scope of loose circle in deep roadway, and the variation regularity of rockg broken degree, on-site sonic wave tests on 950m deep roadway in Yunnan Huize Pb-Zn mine were made. The test results showed that ores with different lithologies has different acoustic properties, and the rock acoustic characteristics varied in the same trend within the range of loose circle. Compared with the upper part, the range of loose circle increased significantly. Among roadway surrounding rocks with seven different lithologies, 10 test holes were laid out to make acoustic survey with the application of single hole method. Then the test results were fitted with to obtain a mathematical expression for the variation regularity of acoustic velocity within the range of loose circle in deep mine. The research provides a reliable reference for the research of acoustic characteristics of deep rock.