高应力软岩巷道支护技术

Support Technology of High Stress Soft Rock Roadway

通过对桃园煤矿北八里段运输大巷在高应力、围岩软弱情况下的巷道破坏形式与特点的调查与分析,运用松动圈支护理论,提出了以"及时锚固、套棚支护、滞后锚注"的方式进行围岩加固和支护的技术方案。井下试验成果表明:采用此方式进行围岩加固和支护,对新掘巷道进行支护和对已掘变形破坏严重巷道进行修复加固,不仅保持了巷道的稳定,而且降低了巷道修护量。

Through surveying and analyzing the roadways damage form and characteristics under the high stress and soft rock at the north Bali sector transportation roadway in Taoyuan Coal Mine,Using the loose rock support theory,the technology plan of wall rock reinforcement and support with ＂timely anchorage,sets sheds support,lagging anchorage and grounting＂ is pointed out.Using the way for the wall rock reinforcement and support,the new roadways support,the repair and reiforcement of the damaging and deforming roadways,not only can maintain the stability of roadways,but also low the amount of roadways maintenance.