摘要
为了使古书院矿15#煤综采工作面坚硬顶板能随工作面推进而及时垮落,减轻坚硬顶板垮落时对工作面的冲击和矿压显现,防止坚硬顶板突然垮落时工作面瓦斯骤然剧增所导致的瓦斯问题,采用了超前深孔预裂爆破的方式对15#煤综采工作面坚硬顶板进行弱化处理。通过对坚硬顶板的弱化处理,减少了初次来压和周期来压的步距,使采空区积聚的瓦斯均衡涌出,从而有效控制了大面积悬顶时顶板瞬间垮落所造成的工作面采空区瓦斯骤然涌出,保证了综采工作面的安全生产。
In order to make the 15# fully-mechanized face hard roof of Gushuyuan Coal Mine can timely collapse with the advanced working face and relieve the impact on the working face and mine pressure appear ance weakening for preventing gas increasing, adopts the advanced deep hole pre-split blasting mode for neighboring layers of the 15# coal fully-mechanized face hard roof, after the weaken processing, can reduce the first weighting and periodic weighting step distance, eble the gas gushedout in equilibrium, thus can effectively control tha gas poured out during roof collapsed caused by the large area hover at the fully-mechanized face and ensure the safety production.
出处
《煤炭技术》
CAS
北大核心
2011年第12期80-82,共3页
Coal Technology
基金
国家自然科学基金重点项目(50834005)
国际科技合作项目(2008DFB70100)
