急倾斜特厚煤层采场巷道围岩松动圈测试研究

Testing Research on Broken Rock Zone of Surrounding Rock in Steep Inclined Thick Seam

摘要: 以围岩松动圈的确定、保证巷道围岩的稳定为目的，在分析探地雷达探测急斜煤层采场巷道围岩松动圈机理的基础上，对神华新疆乌东煤矿北采区东翼43^#煤层北巷松动圈进行雷达测试，测试表明松动圈范围为2.2～2.3 m，选用φ18 mm长度2.4 m的强金属锚杆对巷道的支护方案进行了优化。

Abstract: In order to determine broken rock zone and ensure the stability of surrounding rock, on the basis of analyzing broken rock zone mechanism of steep inclined thick seam with ground penetrating radar (GPR), A GPR test is used to detect broken rock zone in 43^# coal seam north roadway of Xinjiang Wudong Coal Mine north mining area east-side. It indicated that scope of broken rock zone was 2.2 to 2.3 m, which would be optimized with φ18 mm and 2.4 m long strong metal bolt.