摘要
用物理模拟方法研究了层状岩石锚固体全过程变形性质,得到了锚固体纵、横向载荷与挠度全程的关系曲线,两条曲线都存在峰值前和峰值后两个变形阶段,横向载荷首先达到峰值,破坏进一步发展后纵向载荷达到峰值.锚固作用表现为锚固体层间离层和错动量减小,提高了锚固体峰值后承载力,可变形性也得到了改善.
The deformation and failure mechanism of bolted stratified surrounding rockmasses with physical modeling was studied. The curves of transverse load vs. deflection and axial load vs. deflection of bolted stratified surrounding rockmasses were got. Both have pre-peak stage and post peak stage, transverse load reaches the peak at first, then the axial load reaches the peak, the shear displacement manifest that combined voussoir beams interbedded absciss layer and displacement are decreased, the post peak strength of the combined voussoir beams was increased, the toughness was improved.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2005年第4期414-417,共4页
Journal of China Coal Society
关键词
层状结构
锚杆支护
支护机理
回采巷道
stratified rock
bolting
working mechanisms of the rock bolting
roadway
