摘要
利用矿压理论、岩板理论及数值模拟方法,对某煤矿矸石条带充填工作面的充填参数进行了优化,确定了充填60 m、留25 m的充填方案。通过数值模拟分析,得出了充填体塑性区比例系数与充填体宽度呈下凹型的幂指数关系。将充填体视为弹塑性体,建立了充填体和上覆矩形薄板系统的力学模型,运用板壳理论和材料力学理论,给出了顶板最大下沉量计算公式,得到基本顶岩板的最大下沉量为8.73 cm,其结果与数值模拟相吻合。
Using mine pressure theory,rock plate theory and method of numerical simulation,the filling parameter of gangue strip-filling working face in a coal mine was optimized,and the scheme filling 60 m and leaving 25 m was confirmed.According to numerical simulation,it was obtained that the fillings plastic zone proportional coefficient and the fillings width show power exponential function of concave shape.Then the fillings were regarded as elastic-plastic body to establish the mechanics model which included rectangle thin rock plate and fillings.Using plate mechanics and material mechanics theory,the calculation formula of the largest displacement of the roof was obtained,and the largest displacement of main roof plate was accounted to 8.73 cm,which shows that the result anastomoses with numerical simulation.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2011年第2期234-238,共5页
Journal of China Coal Society
基金
山东省技术创新计划项目(200830809020)
关键词
矸石
条带充填体
参数优化
稳定性
gangue
strip-fillings
parameter optimizing
stability
