摘要
为了给解决小保当井田在煤矿开采时所引起的煤矿安全事故提供参考依据,同时在很大程度上保证矿区人民饮水安全。以小保当延安组四段2-2煤层的先期开采工作面为例,在已有的现场勘察资料和实验资料的基础上,采用经验公式法、理论分析法、FLAC3D数值模拟法以及物理模拟法,分别预测了小保当井田2-2煤层采动条件下导水裂隙带发育高度并对其结果进行对比验证。结果表明,小保当2-2煤层采动条件下覆岩导水裂隙带发育高度154 m(采高为6 m时),裂采比25.6。其研究成果可为榆神矿区煤矿的开采提供一定借鉴和参考。
The purpose provides reference for solve the problems of coal mine safety accidents caused by Xiaobaodang mine field in coal mining and ensure the living water of people in Xiaobaodang mining area. Taking the pre-production working face of the 2-2 coal seam of the fourth section of the Yan′an formation as an example, based on the existing site survey data and experimental data, empirical formula method, theoretical analysis method, FLAC3D numerical simulation method and physical simulation method are adopted. The development height of the water flowing fracture zone under the mining conditions of 2-2 coal seam in Xiaobaodang mine field was respectively predicted and compared.The results show that in Xiaobaodang 2-2 coal seam, the developmental height of the water flowing fracture zone of the overburden is 154 m(when the coal′s height is 6 m), and the split ratio is 25.6.The research results can provide some reference for the mining of coal mines in Yushen mining area.
作者
冯超
代革联
FENG Chao;DAI Ge-lian(College of Engineering and Technology,China University of Geosciences,Beijing 100083,China;Key Laboratory of Deep Geological Drilling Technological Ministry of Natural Resources,Beijing 100083,China;College of Geology and Environment,Xi′an University of Science and Technology,Xi′an 710054,China)
出处
《煤炭技术》
CAS
2019年第12期94-98,共5页
Coal Technology
关键词
导水裂隙带
数值模拟
物理模拟
小保当井田
water flowing fractured zone
numerical simulation
physical simulation
Xiaobaodang mine field
