摘要
依据赵庄煤矿地质勘探报告,结合不同岩层性质,采用岩石质量评价法,确定了各岩层合理的节理间距与力学参数。依据合理的岩石、节理力学参数,对3304工作面采动岩层数值模拟,将模拟结果中冒落带、裂隙带的高度与经验公式计算、现场高位钻孔考察分析结果比较,模拟得出的覆岩冒落规律接近于工程实际,验证了节理间距与力学参数的合理性。
Based on the geological report of the ZhaoZhuang coal mine, combined with the properties oi each rock strata, this thesis uses the method of rock mass rating, determines the rational spacing and mechanical parameters of joints. This thesis studies on the strata with mining influence of 3304 mining face, based on the reasonable mechanical parameters of rock and joints, compares the heigh） of caving zone, fissure zone in results of the numerical simulation, empirical equation, site inspection and analysis of high level borehole, the law of roof failing and subsidence obtained by numerical simulation approaches the actual engineering conditions, which verifies the rationality of spacing and me- chanical parameters of joints in numerical simulation.
出处
《煤矿现代化》
2013年第5期59-62,共4页
Coal Mine Modernization
关键词
岩体力学
节理
冒落带
裂隙带
高位钻孔
高度
Rock mass mechanics
Joints
Caving zone
Fissure zone
High level borehole
Height
