关键词: “三软”煤层, 锚网支护, 失稳机理, 树脂锚杆, 巷道支护

Abstract: According to the problem of Zhengzhou mining area three soft coal seam coal roadway supporting technology , occurrence characteristics and formation mechanism of three soft coal seam has been interpreted. And the instability mechanism of three soft coal roadway supporting has been analyzed. Then put forward that the key technique mainly includes three soft coal seam anchor net support technology is mainly coal seam bolt performance, anchor preload, mesh strength, quick installation process and immediate support. On this basis, the thick coal seam anchor net supporting design had been carried out in Chaohua coal mine 22011A coal face transport roadway. The result shows that maximums roof abscission layer of shallow and deep basis points are 48 mm and 52 mm respectively, maximums of roof and floor relative motion are 372 mm and 310 mm. The effective supporting section of roadway has been ensured. So the supporting effect is good.