摘要
为掌握采空区侧向瓦斯卸压带的分布特征,提出了基于侧向支承压力的煤层瓦斯卸压带边界判定方法,并采用数值模拟手段,对采空区侧向支承压力的演化规律进行了模拟研究。结果表明:采空区侧向瓦斯卸压带宽度随煤层采高、工作面斜长的的增加而增大,但受煤层采高影响最为明显;缓倾斜煤层采空区侧向瓦斯卸压带宽度不能完全覆盖沿空掘巷实体煤侧15 m范围煤体,仍需对巷道实体煤侧15 m范围煤体执行区域综合防突措施。
In order to master the distribution characteristics of lateral gas pressure relief belt of gob, we propose that the position of abutment pressure peak is the discrimination method for lateral gas pressure relief belt. By the use of numerical simulation, the evolution of the goaf side abutment pressure was simulated. The results show that the width of lateral gas pressure relief belt increases with the mining height and the working face length, but the influence of mining height is the most obvious. Gently inclined coal seam mining goaf side gas in the pressure relief zone width cannot be completely covered along goaf digging solid coal side of 15 m range coal, and still needs to implement the regional comprehensive outburst prevention and control measures on roadway solid coal side 15 m range of coal.
出处
《煤矿安全》
北大核心
2017年第5期165-168,共4页
Safety in Coal Mines
关键词
突出矿井
采空区
沿空掘巷
实体煤
侧向瓦斯卸压带
outburst mine
goaf
gob-side entry driving
ingerated coal
lateral gas pressure relief belt
