摘要
针对A矿15号煤层综采工作面周边采空区积水量较大、对煤矿安全生产影响较大的问题,运用理论分析、数值模拟方法,计算出导水裂隙带高度介于68.5~166.8 m,平均102.3 m。通过数值模拟可知,随着煤层采高、工作面开采长度、倾角的增加,覆岩“两带”发育高度也呈持续增加的趋势,最终确定15号煤层开采“两带”高度在59.5~166.8 m,平均范围在68.1~102.3 m,为15号煤层的安全开采提供了依据。
Aiming at the problem of a large amount of water in the goaf surrounding the fully mechanized mining face of No.15 coal seam in A Coal Mine,which has a greater impact on coal mine safety production.In this paper,the theoretical analysis and numerical simulation methods were used to calculate the height of the water conducting fracture zone to be between 68.5-166.8 m,an average of 102.3 m.Through numerical simulation,with the increase of coal seam mining height,working face length,and inclination angle,the development height of the overlying strata"two zones"also showed a continuous increase trend.It was finally determined that the height of the two mining zones of No.15 coal seam was 59.5-166.8 m,with an average range of 68.1-102.3 m,providing a basis for the safe mining of No.15 coal seam.
作者
乔轻炳
乔卿付
张宝香
QIAO Qingbing;QIAO Qingfu;ZHANG Baoxiang(Pingdingshan Tian'an Coal Industry Xiangshan Mine Co.,Ltd.,Pingdingshan 467000,Henan,China)
出处
《能源与节能》
2022年第4期31-36,共6页
Energy and Energy Conservation
关键词
综采工作面
数值模拟
导水裂隙带
发育高度
fully mechanized mining face
numerical simulation
water conducting fracture zone
development height
