采矿与安全工程学报2012，Vol.29Issue(2)：220-225,6.
上行开采顶板煤巷围岩稳定性控制技术研究
Study on Surrounding Rock Control for Mining Roadway of the Overlying Protected Seam in Ascending De-Stressed Mining
摘要
Abstract
Surrounding rock control in the overlying protected coal seam is a challenging topic of de-stressed mining of multi-seams. Based on current research on roadway control, a numerical simulation model was established to study stress field and fissure field before and after roadway excavation during underlying mining. Meantime, a physical simulation mode with the complex textured-roof and varying thickness was used to study roadway instability and collapse caused by dynamic pressure as well. The results show that when thickness of the roof is bigger than that of the bolted depth. The roadway situation is in the worst and the roof has the greatest possibility to lose its stability. Then a series of control principles have been proposed, such as strengthening roof, reinforcing both sides, strengthening the key area and strengthening bolted area. Therefore, combined supporting technique of tridimensional cable bolt beam structure based on new "three-high" bolt has been put them into practice finally, which showed that a better supporting effect was obtained.关键词
上行开采/顶板巷道/新型"三高"锚杆/立体式锚索梁承载结构Key words
ascending mining/ roof roadway/ new "three-high" bolt/ tridimensional cable bolt beam structure分类
矿业与冶金引用本文复制引用
王成,杜泽生,张念超,钱德雨..上行开采顶板煤巷围岩稳定性控制技术研究[J].采矿与安全工程学报,2012,29(2):220-225,6.基金项目
国家重点基础研究发展计划(973)项目(2011CB201200) （973）
国家自然科学基金青年科学基金项目(50904064) （50904064）
