坚硬顶板弱化处理防止瓦斯骤然涌出  

Prevent Gas Suddenly Gushed Out by Weakening Processing for Hard Roof

作　　者：崔永杰[1] 孙祺[2] 郑跃兵[1] 晋新林[1] 杨胜强[2] 

机构地区：[1]晋煤集团,山西晋城048000 [2]中国矿业大学安全工程学院,徐州221008

出　　处：《煤炭技术》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)

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.

关 键 词：综采工作面 坚硬顶板 瓦斯骤然涌出 顶板弱化处理 

分 类 号：TD713[矿业工程—矿井通风与安全]