水采采场顶板周期垮落规律及数力学模型  

PERIODIC CAVING LAW AND MATHEMATICS MECHANICAL MODEL OF ROOF IN HYDRAULIC MINING FACE

作　　者：涂敏[1] 谢广祥[1] 

机构地区：[1]淮南工业学院

出　　处：《煤炭学报》1998年第5期491-496,共6页Journal of China Coal Society

基　　金：煤炭部一般项目

摘　　要：运用屈服线理论分析了水采采场顶板周期垮落规律，建立了顶板周期垮落时平行四边形板结构的数力学模型，并应用工程近似分析法推导出顶板周期垮落时悬板的挠曲函数及板内应力函数，得出周期垮落面积Ｓｃ与跨距比值Ｐ的关系式．经实例应用，证实这一结论的正确性和可靠性。Periodic caving law of roof in Hydraulic mining face was analysed in the guidance of yield line theory. Mathemathical mechanical model of parallelogram plate structure in roof periodic caving was also constructed. Torsion function of suspended plate and stress function inside the plate in roof periodic caving are derived with analysis method of similar engineering and relational expression between area S c and span ratio P is also obtained. Practical application has proved that the expression is correct and reliable and has important guidance meaning for production.

关 键 词：水采 顶板 周期垮落规律 煤矿 数力学模型 

分 类 号：TD327.23[矿业工程—矿井建设] TD825