摘要
为探究拌合水初始温度、矿化度、酸碱度耦合条件对充填膏体性能的影响,设计三因素四水平正交试验,配置不同初始温度(5℃、15℃、25℃、35℃)、矿化度(0、1000 mg/L、2000 mg/L、3000 mg/L)、酸碱度(3, 5, 7, 9)的拌合水制作充填膏体,测试其3 d、7 d、28 d单轴抗压强度(UCS),并对结果进行极差分析,确定各因素显著性大小依次为:矿化度、酸碱度、初始温度,综合分析确定最优组合为:初始温度25℃,矿化度2000 mg/L,酸碱度为5。保持最优组合中酸碱度、初始温度不变,改变矿化度,开展10组试验,以试验数据为原始数据,结合灰色预测,模糊分类以及马尔可夫理论,构建单轴抗压强度组合预测模型。按梯度再开展3组试验比较两个预测模型,结果表明:组合预测模型相对于灰色GM(1,2)预测模型精度更高,稳定性更强。
In order to explore the coupling effect of initial temperature, mineralization and pH of mixing water on the performance of filling paste, a three-factor and four-level orthogonal test was designed. The mixing water with different initial temperatures(5℃, 15℃, 25℃, 35℃), mineralization(0, 1000 mg/L, 2000 mg/L, 3000 mg/L) and pH(3, 5, 7, 9) was used to prepare the filling paste. The uniaxial compressive strength(UCS) of 3 d, 7 d and 28 d was tested. The range analysis was carried out on the results, and the relationship between the significance of the factors was ordered from large to small as mineralization, pH, initial temperature. Through comprehensive analysis, the optimal combination was determined as initial temperature of 25℃, mineralization of 2000 mg/L, and pH of 5. Keeping the pH and initial temperature at constant in the optimal combination, and changing the mineralization, 10 sets of tests were carried out. Using the test data as the original data, combined with grey prediction, fuzzy classification and Markov theory, a combined prediction model of uniaxial compressive strength was constructed. Another three groups of tests were carried out according to the gradient to compare the two prediction models. The results show that the combined prediction model is more accurate and stable than the grey GM(1,2) prediction model.
作者
刘音
杜玉娇
王昊宇
马吉燕
陈姝蓉
程兴娜
LIU Yin;DU Yujiao;WANG Haoyu;MA Jiyan;CHEN Shurong;CHENG Xingna(College of Safety and Environmental Engineering,Shandong University of Science and Technology,Qingdao,Shandong 266590,China)
出处
《矿业研究与开发》
CAS
北大核心
2023年第2期62-69,共8页
Mining Research and Development
基金
山东省自然科学基金项目(ZR2021ME138)
国家创新创业计划项目(2021110424163)。
关键词
充填膏体
拌合水
矿化度
酸碱度
初始温度
Filling paste
Mixing water
Mineralization
pH
Initial temperature
