摘要
针对中煤昔阳能源有限责任公司黄岩汇煤矿15108工作面邻近煤层瓦斯涌出量大,造成该工作面回采期间上隅角瓦斯体积分数超限的问题,采用理论计算与UDEC数值模拟,得出各覆岩下沉量及竖"三带"发育范围,对不同层位下的高抽巷抽采效果进行现场实测与评价,结果表明:煤层上方岩层随着埋深变浅各覆岩下沉量也逐渐减小,沿竖直方向能反映出竖"三带"的基本特征。竖"三带"理论计算与数值模拟结果相近,高抽巷实际布置层位与抽采效果验证了两个结果的可靠性,最终确定15108工作面裂隙带最大发育高度,为67.7~70.4 m,高抽巷合理层位应为50~70 m,此范围内高抽巷可将上隅角瓦斯体积分数控制在0.3%以下。
In view of the large gas outflow of the nearby layer of the working surface of Huangyanhui mine15108,and its resulting in the over-limiting concentration of upper angle gas during the recovery,the sedimentation and vertical“three-belts”development range of each rock cover were obtained by theoretical calculation and UDEC numerical simulation,and the high-pumping roadway extraction effect under different layer conditions was measured and evaluated on the spot. The research showed that the subsidence of the upper rock layer of the coal seam with the depth of the burial and the shallowness of the cladding was also gradually reduced,and the basic characteristics of the vertical “three belts”could be reflected in the vertical direction. The vertical “three-belts”theoretical calculation and numerical simulation results were similar,the actual arrangement of the high pumping lane level and extraction effect verified the reliability of the two results,and finally it was determined that the maximum development height of the 15108 working surface fissure belt was about 67. 7 ~70. 4 m,the reasonable layer level of the high pumping lane should be between 50 ~ 70 m,in this range of high pumping lane could control the concentration of upper angle gas below 0. 3%.
作者
范尚崇
杨宏民
邱向雷
尹海
FAN Shangchong;YANG Hongmin;QIU Xianglei;YIN Hai(School of Safety Science and Engineering,Henan Polytechnic University,Jiaozuo 454000,Henan,China;Engineering Research Center of the Ministry of Education for Coal Mine Disaster Prevention and Rescue and Disaster Relief,Jiaozuo 454000,Henan,China;Huangyanhui Coal Mine,China Coal Xiyang Energy Co.,Ltd.,Xiyang 045300,Shanxi,China)
出处
《河南理工大学学报（自然科学版）》
CAS
北大核心
2022年第2期26-31,共6页
Journal of Henan Polytechnic University（Natural Science）
基金
国家自然科学基金资助项目(51574017)
河南省高校科技创新团队支持计划项目(17IRTSTHN030)
教育部创新团队发展支持计划项目(IRT-16R22)。
关键词
上隅角瓦斯
覆岩下沉量
竖“三带”
高抽巷层位
upper corner gas
overburden subsidence
vertical“three belts”
high pumping roadway level
