摘要
以冲击媒体破裂与失稳过程的试验、数值模拟计算研究为基础,将煤体的破裂变形分为三个阶段:弹性阶段、非线性阶段与突变阶段。用三个特征量描述了煤体扩容变化的过程:体积压缩、稳定扩容及扩容突变。建立了冲击地压的扩容模型,扩容理论解释了冲击地压前兆信息的稳定性与突变性,是冲击地压前兆信息识别的理论基础。
Based on the experiment, the numerical simulation of the fracture and instability of impacted coal mass, the breakage and deformation of coal mass were divided into three stages: elastic, nonlinear and mutation stages. The process of dilatation change of coal mass was depicted by three characteristic quantities, such as volume compression, steady dilatation and dilatation mutation. The dilatation model of rock burst is established. This theory of dilatation explains the stability and mutation of premonitory information of rock burst and constitutes the theoretical basis for rock burst premonitory information identification.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2002年第A02期2301-2303,共3页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金(50028403)
山东省自然科学基金(Y2002F10)
关键词
矿业工程
冲击地压
孕育过程
扩容
突变
前兆信息
mining engineering
rock burst
process of development
dilatation
mutation
premonitory information
