西北地区红层泥岩崩解特性试验研究
Experimental study on disintegration characteristics of red-bed mudstone in northwestern China
甘季中 1刘兆温 2张微 3穆彦虎 4张坤 2毛云程 2陈敦 4张宪魁 2张轩2
作者信息
- 1. 西北民族大学 土木工程学院,甘肃 兰州 730030;甘肃省绿色工程材料与低碳建造重点实验室,甘肃 兰州 730124
- 2. 西北民族大学 土木工程学院,甘肃 兰州 730030
- 3. 西北民族大学 土木工程学院,甘肃 兰州 730030;兰州交通大学 土木工程学院,甘肃 兰州 730070
- 4. 中国科学院西北生态环境资源研究院 冻土工程国家重点实验室,甘肃 兰州 730000
- 折叠
摘要
针对西北地区红层泥岩设计了一套自由浸水崩解装置,对不同质量的红层泥岩试块进行自由浸水试验.考虑试块的吸水过程,将试块吸水率作为崩解试验结果的补偿,研究不同质量红层泥岩试块的崩解率、崩解速率随时间变化规律.结果表明,测试红层泥岩膨胀性矿物含量较少,其崩解的前30%时间内崩解率可达45%～75%,前50%时间内崩解率可达68%～90%,崩解总时间T与试块质量m满足T =a*(1-e-b*m)关系.随着试块质量增加,试块崩解速率越大,且崩解的前50%时间内崩解率增加显著.
Abstract
With regard to red-bed mudstone in northwestern China,a self-designed free immersion disintegration device is used to conduct free water immersion tests on red-bed mudstone samples with different masses.The water absorption process of the samples is considered in the tests,and the water absorption rate of the samples is used as a compensation for the disintegration test results.The disintegration rate and disintegration speed of red-bed mudstone samples with different masses over time are studied in this paper.The results show that the red-bed mudstone has a low content of expansive minerals,with a disintegration rate of 45%to 75%within the first 30%of the disintegration time,and 68%to 90%within the first 50%of the disintegration time.The total disintegration time T and mass of sample m follow the functional relationship T =a*(1-e-b*m).As the mass of samples increases,the disintegration rate increases significantly within the first 50%of the disintegration time.
关键词
红层泥岩/崩解/试块质量/崩解率/崩解速率Key words
red-bed mudstone/disintegration/sample mass/disintegration rate/disintegration speed引用本文复制引用
基金项目
西北民族大学引进人才科研项目(Z2302818)
甘肃省青年科技基金计划(22JR5RA089)
甘肃省2023年研究生"创新之星"项目(2023CXZX-205)
出版年
2024
NETL
NSTL
万方数据