摘要
依据覆岩离层生成的力学机理,结合煤层开采程度的不同,将可注浆层位的离层划分为三类.以岩石的应变为指标,确立了覆岩离层可注浆层位岩梁的断裂步距表达式,理论上证明了划分注浆层位的合理性.根据岩石的全应力应变试验,结合现场实际观测数据,对以应变为指标的岩梁断裂步距表达式做了初步验证.结果表明:可注浆层位的分类和断裂步距表达式的确定对注浆减沉工程具有指导意义.
The bed-separations which can be grouted are divided into three kinds according to their forming mechanics mechanism.Taking the strain as index,the expression of caving step length of roof is established.According to the total stress-strain tests,the expression of caving step length of roof is validated combining with the observed data.The result indicates that the classifying of bed-separations and the establishing of expression are helpful to the project of grouting to reduce the surface subsidence.
出处
《固体力学学报》
CAS
CSCD
北大核心
2006年第S1期164-168,共5页
Chinese Journal of Solid Mechanics
基金
国家自然科学基金资助项目(50174035)
