硬岩夹层对组合岩石蠕变性能的影响研究及应用  

Effect of Hard Rock Interlayer on Creep Properties of Composite Rock Mass and its Application

作　　者：经来旺[1] 李树文 彭绍驰 经纬[1] JING Laiwang;LI Shuwen;PENG Shaochi;JING Wei(School of Civil Engineering and Architecture,Anhui University of Science and Technology,Huainan,Anhui 232001,China)

机构地区：[1]安徽理工大学土木建筑学院,安徽淮南市232001

出　　处：《矿业研究与开发》2023年第1期91-94,共4页Mining Research and Development

基　　金：国家自然科学基金项目(51904012)。

摘　　要：为了探究硬岩夹层对组合岩石蠕变性能的影响,通过试验与数值仿真相结合的方法,分析了不同夹层数量、厚度以及间距的情况下组合岩石轴向变形的变化规律。结果表明:硬岩夹层的厚度越大、数量越多,组合岩石的蠕变量越小;硬岩夹层可以降低其影响范围内软岩的形状改变比能,进而提高软岩抵抗蠕变变形的能力,但随着夹层间距的增加,组合岩石抵抗蠕变变形的能力先增大后减小。通过类比研究,为巷道围岩注浆的时机选择提供了一定的依据。In order to investigate the influence of hard rock interlayer on the creep properties of composite rock mass,the variation law of axial deformation of composite rock mass with different number,thickness and spacing of interlayers was analyzed by combining test and numerical simulation.The results show that the creep of composite rock mass decreases with the increasing thickness and number of hard rock interlayers.Hard rock interlayer can reduce the specific energy of shape change of soft rock within its influence range,thereby improving the ability of soft rock to resist creep deformation.However,with the increase of interlayer spacing,the ability of composite rock to resist creep deformation first increases and then decreases.By analogy,it provides a certain basis for the selection of grouting time of surrounding rock of roadway.

关 键 词：硬岩夹层 软岩蠕变 数值仿真 围岩注浆 

分 类 号：TD353[矿业工程—矿井建设]