摘要
为了消除突出煤层瓦斯威胁,提高掘进效率,以白坪煤矿13091工作面及13111工作面为研究对象,采用数值模拟及现场实测的手段,测定突出煤层回采工作面采空区卸压影响范围,确定卸压煤巷条带卸压带宽度,优化新工作面临采空区巷道的布置,以便在采空区卸压范围内作业。研究结果表明:通过13091工作面开挖模拟,研究了13111工作面位移、应力随时间及空间变化的规律,得出13091工作面采空区的卸压影响范围应当在30m范围内;随着煤层瓦斯参数测点与13091工作面采空区距离的接近,13111工作面实测煤层瓦斯含量呈逐渐减小趋势;综合分析得出距13091工作面采空区30m以内为有效卸压区域,距13091工作面采空区30~33m区域为过渡区域,距13091工作面采空区33m以外区域为原始区域。
In order to eliminate the threat gas disasters in outburst coal seam and improve the excavation efficiency,the influence scope of pressure relief in the goaf was studied with numerical simulation and field measurement for the 13091 working face and 13111 working face of Baiping Coal Mine.The width of the pressure relief strip in the pressure relief coal roadway was determined,and the layout of the gob-side roadway in the new working face was optimized,so as to operate within the pressure relief scope of the goaf.The results show that:in the excavation simulation of the 13091 working face,the pressure relief influence range of the 13091 working face goaf is within 30 m;as the coal seam gas parameter measurement point is approaching the 13091 working face goaf,the measured coal seam gas content of the 13111 working face shows a gradually decreasing trend;the effective pressure relief area is within 30 m from the goaf of the 13091 working face,and the transition area is 30-33 m away from the goaf,and the original area is beyond 33 m from the goaf.
作者
陈广金
周礼杰
尚政杰
李军校
王岳栩
张振立
CHEN Guang-jin;ZHOU Li-jie;Shang Zheng-jie;Li Jun-xiao;WANG Yue-xu;ZANG Zhen-li(Zhengzhou Coal Industry(Group)Co.,Ltd.,Zhengzhou 450000,China;School of Energy and Mining,China University of Mining and Technology-Beijing,Beijing 100083,China;Zheng Coal Group(Henan)Baiping Coal Industry Co.Ltd.,Zhengzhou 452482,China;Lugou Coal Mine,Zhengzhou Coal Industry(Group)Co.,Ltd.,Zhengzhou 452373,China)
出处
《煤炭工程》
北大核心
2022年第8期72-77,共6页
Coal Engineering
基金
中央高校基金资助项目(3142019005)
国家自然科学基金资助项目(52074120)。
关键词
突出煤层
采空区
卸压影响范围
数值模拟
瓦斯含量
outburst coal seam
goaf
influence range of pressure relief
numerical simulation
gas content
