摘要
随着矿井开采深度的增加,高温热害问题日益突出,通过正交试验的方法,以陶粒、玻化微珠和粉煤灰掺量作为实验变量,研制出一种新型隔热材料,其导热系数仅为普通混凝土的1/8;对各实验变量对于材料的表观密度、导热系数、抗压、抗拉、抗折强度的影响进行了研究,通过功效系数法进行分析,最终得出新型隔热材料的最佳掺量配比为:陶粒掺量为粗骨料的40%、玻化微珠掺量为细骨料的60%、粉煤灰掺量为胶凝剂的20%。试验结果表明,新型隔热材料施工工艺简单,成本低廉,可以满足深井高温巷道隔热要求,值得大力推广和使用。
With the increase of mining depth, thermal pollu- tion problems were increasingly prominent. Through the orthogonal experiment method, with dosage of ceramsite, glazed hollow beads and fly ash as the experimental variables, a new thermal insulating material was developed, whose thermal conductivity was only 1/8 of the normal concrete. Then, the influences of experimental variables on the apparent density, thermal conductivity, compressive, tensile and flexural strength of material were studied. Through analyzing by efficacy coefficient method, the optimum proportioning of new thermal insulating material was obtained. The dosage of ceramsite was 40% of coarse aggregate, the dosage of glazed hollow bead was 60% of fine aggregate, and the dosage of fly ash was 20 % of gelating agent. The test results showed that the new insulating material, with simple construction technology and low cost, could meet the insulating requirements of high-temperature roadway in deep mine, and was worth promoting and using.
出处
《矿业研究与开发》
CAS
北大核心
2016年第2期76-80,共5页
Mining Research and Development
基金
安徽省高校自然科学重大项目(KJ2015ZD20)
关键词
深井煤矿
高温巷道
隔热材料
陶粒
玻化微珠
Deep coal mine, High-temperature roadway, Thermal insulating material, Ceramisite, Glazed hollow bead
