钻孔成像方法在巷道围岩松动圈测试中的应用研究

准确确定巷道围岩松动圈的大小对于选择合理的巷道支护方式与支护参数具有重要意义。鉴于目前使用的松动圈测试方法均存在一定的不足,对钻孔成像测试法进行了研究。应用该方法测定了鲁西煤矿3下109工作面轨道运输巷的松动圈大小,确定了巷道围岩的类别,并进行了支护设计,支护效果良好。最后运用计算机数值模拟法模拟了围岩松动圈范围,模拟结果与钻孔成像的现场实测结果吻合。

Application of Borehole Imaging Method in Test of Broken Rock Zone of Roadway Surrounding Rock

To exactly determine the size of the broken rock zone of roadway surrounding rock is of great significance for the selection of the reasonable support pattern and support parameters.At present,the test methods used for the broken rock zone of roadway surrounding rock have some disfigurements and deficiencies,so the borehole imaging method was studied in this paper.This method was used to test the size of the broken rock zone of the rail gangway in 3down 109 coal face in Luxi Mine,the classification of roadway surrounding rock was determined,the support design was conducted,and good support effect was achieved.Finally,the range of the broken surrounding rock zone was simulated by using the computer numerical simulation method,the simulated results were identical to the results measured by borehole imaging method.