摘要
受采动裂隙和节理切割的层状破裂顶板不能视为弹性连续梁，其力学结构应为岩块相互挤压而成的压力拱。本文建立了一种用于这类顶板变形计算的无张纯压拱力学模型，并据计算实例讨论这类顶板挠曲变形特性，分析了不产生屈曲、压溃、剪切滑移及岩梁形成稳定挤压拱的条件。
No beded and fractured roof can be treated as an elastic continuous beam,when it consists of rock blocks formed by cross joints and fractures.In fact,it,as a mechan-ic structure , is an arch.In the present work a mechanical model(no-tension arch ) has beendeveloped for calculating the deflection of roofs In this paper, a study in detail is made onthe deflective behaviour of the roof and condition of the formation of a stable compressedarch without buckling, compression and shear failures.
出处
《矿冶工程》
CAS
CSCD
北大核心
1995年第1期12-16,共5页
Mining and Metallurgical Engineering
