摘要
为了评判水库下厚煤层综放开采采动裂隙是否相互连通并波及水体,以大平矿区井田范围内钻孔揭露的地层资料及工作面布置方式为基础,采用弹性理论获得了采动地表裂缝深度为6.59 m,以大平矿区水库范围外的导水裂隙带高度实测数据作为预测接近样本,选取导水裂隙带高度的可测影响因素,结合主观的层次分析法和客观的熵值法对指标权重值进行综合确定,通过Matlab编程获得水库范围内各工作面采动后钻孔位置处的导水裂隙带高度的预测值及各影响因素的权重,同时采用Surfer软件的克里金插值法获得了地表裂缝和导水裂隙带之间的覆岩厚度及各组分岩性的厚度等值线,并进行了透水安全评估。
Abstract：To evaluate the fracture fissures of overlying strata induced by fully mechanized mining operation at coal face and their connection with the water body inside overlying reservoir, based on the stratum information revealed by drilling and the layout of working face at Daping mine, the mining surface fracture depth is 6.59 m derived from the elastic theory. The measured heights of water flow fractured zone at different locations are used as prediction samples, the comprehensive index weight value is determined with the combination of the subjective level analysis and the ob- jective entropy method by selecting the measurable factors with the height of water flow fractured zone at workface in Daping coal mine. The predictive value on the height of water flow fractured zone near the borehole position within the scope of reservoir and the weights of all influencing factors are obtained using Matlab program. The contours of the thickness of overlying layers and the different rock layers between the surface cracks and water flow fractured zone are obtained using the Kriging interpolation method in Surfer software. Also,the safety of water-inrush is evaluated. Key words： coal mining under water-bodies ; thick coal seam ; hazard of water inrush ; full mechanized mining ; water flowing fractured zone;analysis of entropy weight and AHP
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2013年第A02期370-376,共7页
Journal of China Coal Society
基金
国家自然科学基金资助项目(51274051
51009015)
关键词
水体下采煤
厚煤层
透水危险性
综放开采
导水裂隙带
熵权-层次分析法
coal mining under water-bodies
thick coal seam
hazard of water inrush
full mechanized mining
water flowing fractured zone
analysis of entropy weight and AHP
