摘要
通过对回采工作面垮落后在上下巷形成悬臂梁的力学分析,结合沿空留巷支护机理,改善沿空巷道的围岩应力环境,减小了巷内支护的受力及巷旁支护的阻力,提高了沿空巷道的稳定性。
Based on the mechanics analysis of cantilever beam formed in the top and the bottom tunnel after the stoping face failing, combined with the mechanism of gob-side entry retaining support, improved the surrounding rock stress environment, reduced the support stress of and the roadside support resistance, improved the stability of gob-side entry.
出处
《能源与节能》
2013年第1期6-7,共2页
Energy and Energy Conservation
关键词
预裂爆破
切顶卸压
留巷技术
presplitting blasting
top cutting pressure- relief
entry retaining technology
