基于环氧树脂固化法的类岩石材料配比研究  

The study of the ratio of rock materials based on epoxy resin solidification

作　　者：郭东明[1] 刘嘉华 杨静[1] 刘翼飞 肖博丰 蒙祖赐 GUO Dongming;LIU Jiahua;YANG Jing;LIU Yifei;XIAO Bofeng;MENG Zuci(School of Mechanics and Civil Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China)

机构地区：[1]中国矿业大学(北京)力学与土木工程学院,北京100083

出　　处：《实验力学》2025年第1期115-124,共10页Journal of Experimental Mechanics

基　　金：国家自然科学基金项目(51974315)。

摘　　要：目前用环氧树脂固化法制作类岩石材料时主要使用试错法,很容易造成资源和时间的极大浪费。本文利用均匀试验设计方法,对环氧树脂与固化剂质量比、促进剂百分比及稀释剂百分比对类岩石材料的抗压强度、弹性模量和抗拉强度等力学性能的影响进行研究。结果表明:环氧树脂与固化剂质量比、促进剂百分比与稀释剂百分比对环氧树脂固化法制作的类岩石材料力学性能有较大影响;类岩石材料的破坏形态主要包括竖向劈裂破坏、脆性张拉破坏和横向膨胀破坏;峰值抗压强度为4.79 MPa~78.17 MPa,抗拉强度为0.23 MPa~16.74 MPa,弹性模量为0.23 GPa~6.56 GPa,这些力学性能参数及所呈现的破坏形态,使得类岩石材料可模拟包括花岗岩、玄武岩以及含水砂岩在内的多种自然岩石的特性。基于线性回归分析方法建立了类岩石材料力学性能与环氧树脂与固化剂质量比、促进剂百分比和稀释剂百分比的经验公式,并利用试验验证了公式的准确性,所得公式可为环氧树脂固化法快速确定类岩石材料配比提供参考。At present,the epoxy resin curing method mainly uses trial and error method to make rock-like materials,which causes great waste of resources and time.The effects of mass ratio of epoxy resin to curing agent,accelerator percentage and diluent percentage on compressive strength,elastic modulus and tensile strength of rock-like materials were studied by uniform experimental design method.The results show that the mass ratio of epoxy resin to curing agent and the percentage of accelerator and diluent have great influence on the mechanical properties of rock-like materials made by epoxy resin curing method.Rock-like materials exhibit various failure modes,primarily including vertical splitting failure,brittle tensile failure,and lateral dilatancy failure.In terms of mechanical properties,their peak compressive strength ranges from 4.79 MPa to 78.17 MPa,tensile strength ranges from 0.23 MPa to 16.74 MPa,and elastic modulus ranges from 0.23 GPa to 6.56 GPa.These mechanical properties and failure modes allow rock-like materials to simulate the characteristics of various natural rocks,including granite,basalt,and water-bearing sandstone.Based on linear regression analysis,empirical formulas are established relating the mechanical properties of rock-like materials to the mass ratio of epoxy resin to curing agent,the percentage of accelerator,and the percentage of diluent.The accuracy of these formulas is verified through experiments.The obtained formulas can provide a reference for rapidly determining the mix proportions of rock-like materials using the epoxy resin curing method.

关 键 词：均匀试验设计 相似材料 配比试验 回归分析 

分 类 号：TD315[矿业工程—矿井建设]