摘要
为了配制出可模拟Ⅲ级围岩的相似材料,以石英砂、重晶石粉、石膏粉、白水泥、硅油和水为原材料研制出一种新型围岩相似材料。选取砂骨比、石膏含量、白水泥含量和水含量4个因素,每个因素设置4个水平,设计四因素四水平正交试验方案。对16组配比试验进行单轴压缩试验和直剪试验,得到不同配比下的材料物理力学参数,采用极差分析法对各力学参数进行影响因素的敏感性分析。结果表明:砂骨比是重度的主要控制因素,石膏含量是抗压强度、弹性模量和内摩擦角的主要控制因素,白水泥是黏聚力的主要控制因素。能较好模拟Ⅲ级围岩的相似材料配比为石英砂:重晶石粉∶石膏∶白水泥∶水∶硅油=34.4∶51.6∶4∶1∶8∶1。
In order to prepare a similar material that can simulate Grade III surrounding rock,a new type of surrounding rock similar material is developed using quartz sand,barite powder,gypsum powder,white cement,silicone oil and water as raw materials.A total of 16 orthogonal experimental schemes are developed by setting four factors of sand to aggregate ratio,gypsum content,white cement content and water content,with four levels for each factor.The uniaxial compression tests and direct shear tests on the samples are conducted to obtain physical and mechanical parameters at different ratios,and the range analysis method is used for sensitivity analysis.The results indicate that the sand to aggregate ratio is the main control factor for the weight,the gypsum content is the main control factor for compressive strength,elastic modulus and internal friction angle,and the white cement is the main control factor of cohesion.The mix proportion of similar material that can better simulate the Grade III surrounding rock is quartz sand∶barite powder∶gypsum powder∶white cement∶water∶silicone oil=34.4∶51.6∶4∶1∶8∶1.
作者
江训仲
荣耀
JIANG Xunzhong;RONG Yao(School of Civil and Architectural Engineering,East China University of Technology,Nanchang 330032,Jiangxi,China;Jiangxi Jiaotou Maintenance Technology Group Co.,Ltd.,Nanchang 330052,Jiangxi,China)
出处
《水力发电》
2025年第4期111-115,共5页
Water Power
基金
国家重点研发计划(2023YFC3009400)
江西省交通运输厅重大研发专项(2022Z0001,2022Z0002)
赣鄱俊才支持计划-主要学科学术和技术带头人培养项目-青年人才(技术类)(20232BCJ23069)。
关键词
Ⅲ级围岩
相似材料
正交试验
配比
敏感性分析
影响因素
模型试验
Grade III surrounding rock
similar material
orthogonal test
mix proportion
sensitivity analysis
influencing factor
model test
作者简介
江训仲(1999-),男,江西九江人,硕士研究生,研究方向隧道工程;通信作者:荣耀.
