朱昌星, 刘旭, 赵伟浩.基于正交试验煤岩相似材料最优配比研究[J].河南理工大学学报（自然科学版）,doi:10.16186/j.cnki.1673-9787.2022090049

ZHU C X, LIU X, ZHAO W H.Study on the optimum proportioning of coal rock similar materials based on orthogonal experiment[J].Journal of Henan Polytechnic University(Natural Science) ,doi:10.16186/j.cnki.1673-9787.2022090049

基于正交试验煤岩相似材料最优配比研究(网络首发)

朱昌星, 刘旭, 赵伟浩

河南理工大学 土木工程学院，河南 焦作 454000

摘要:为了探寻煤岩相似材料最优配比，以赵固一矿煤岩的自然视密度、单轴抗压强度、弹性模量为模拟 指标，采用正交设计法开展煤岩相似材料配比试验。选用碳酸钙、水泥、细河砂、煤粉、蒸馏水为原料， 以骨料与胶结剂质量比、胶结剂成分间质量比、骨料成分间质量比和掺水率为控制因素，进行4因素3水平的相似材料正交配比研究。结果表明：不同配比下相似材料物理力学参数变化较大，各因素对模拟指标 影响规律性强，且骨胶比对相似材料各模拟指标起控制作用，自然视密度、单轴抗压强度、弹性模量均随 骨胶比增加而显著下降。通过多元线性回归获得相似材料最优配比。经验证，该配比制作的试样在物理力 学参数、单轴压缩曲线和破坏形态上能够很好地模拟原煤。

关键词:相似材料;正交试验;敏感性分析;多元线性回归

中图分类号：TD322

doi:10.16186/j.cnki.1673-9787.2022090049

基金项目: 国家自然科学基金资助项目（51874119）； 河南省教育厅科研项目（2011A440003）； 河南理工大学博士基金资助项目（B2009-96）

收稿日期:2022-09-20

修回日期:2023-04-25

网络首发日期: 2023-05-07

Study on the optimum proportioning of coal rock similar materials based on orthogonal experiment(Online)

ZHU Changxing, LIU Xu, ZHAO Weihao

School of Civil Engineering， Henan Polytechnic University， Jiaozuo 454000，China

Abstract:To explore the optimal proportioning of coal rock similar materials，the natural apparent density，uniaxial compressive strength and modulus of elasticity of coal rock of Zhao Gu I mine were used as simulation indexes，an d similar material proportioning tests were carried out by orthogonal design method. In the experiment， calcium carbonate， cement， fine river sand， coal dust and distilled water were selected as raw materials， and a 4-factor，3-level orthogonal proportioning study of similar materials was conducted with the mass ratio of aggregate to binder， the mass ratio between binder components， the mass ratio between aggregate components and water admixture rate as control factors. The results show that the physical and mechanical parameters of similar materials vary greatly under different ratios， and the effect of each factor on the simulated indexes is regular， and the bone and glue ratio plays a controlling role on the simulated indexes of similar materials， and the natural apparent density， uniaxial compressive strength and elastic modulus all decrease significantly with the increase of the bone and glue ratio. The optimal ratio of similar materials was obtained by multiple linear regression， and it was verified that the specimens made by this ratio could simulate the raw coal well in terms of physical and mechanical parameters， uniaxial compression curves and damage morphology.

Key words:similar material;orthogonal test;sensitivity analysis;multiple linear regression

CLC:TD322