摘要
针对唐口矿井现开采的3上煤层具有强冲击倾向性,3上煤层顶板具有弱冲击倾向性,4 305回采工作面煤粉钻监测多次严重超标,防冲形势十分严重。根据唐口矿井煤层地质具体条件,采用深孔爆破卸压技术对煤层进行卸压,取得了较好的预期效果,保证了工作面的安全高效回采。
This paper presents that 3th coal seam has a strong burst trend in Tangkou Coal Mine,the roof of the 3th coal seam has a weak burst trend,drilling based on 4 305 working face greatly exceeded the standard limits many times,the situation of preventing burst is very serious.According to geological conditions of coal seams in Tangkou Coal Mine,the technology of stress relaxation by deep hole was blasting used to discharge coal seam pressure,which has make expected effect and can guarantee safe and effective actual mining.
出处
《煤炭技术》
CAS
北大核心
2011年第3期85-87,共3页
Coal Technology
关键词
冲击倾向性
深孔爆破
卸压
burst trend
deep hole blast
pressure relaxation
