矸石膏体充填材料耐久性试验研究  

Durability Test of Gangue Paste Stowing Material

作　　者：王其锋[1] 刘音[1] 张浩强[1] 江宁[1] 

机构地区：[1]山东科技大学资源与环境工程学院,山东青岛266510

出　　处：《煤矿开采》2014年第1期3-6,共4页Coal Mining Technology

基　　金：国家自然科学基金项目资助(51274132);山东省高等学校科技计划(J13LH03)

摘　　要：为探究研石膏体耐久性,将水泥:粉煤灰:煤研石按1:4:6的比例混合,质量浓度为74%,配制成膏体,对28d膏体充填体进行抗侵蚀性、抗渗性和热稳定性等耐久性试验。试验结果表明:充填体试件对碱有良好的抗侵蚀性能,酸和盐对充填体试件初期强度影响较大;充填体的抗渗标号为P6,抗渗等级较弱;充填体试件在30℃,60℃的温度下,其抗压强度略有上升,在90℃,120℃,150℃的温度下,抗压强度下降较为明显,热稳定性差。配制的膏体更加适合我国北部矿井(井下水环境偏碱性)及井下温度较高的深部矿井。In order to research durability of gangue paste , concrete, coal ash and gangue were mixed with the proportion of 1 ∶4 ∶6 to compose paste and the mass concentration was 74%.Anti-erosion, anti-permeability and heat stability were tested for the paste stowing body of 28d.Result showed that stowing sample had good anti-erosion for alkali, acid and salt had large influence on initial strength of stowing sample.Stowing body′s anti-permeability grade was P 6 which stood for weak grade.Under the temperature of30 ℃ and 60℃, sample＆#39;s compressive strength increased slightly;under the temperature of 90℃,120 ℃and 150℃, reduction of compressive strength was obviously and heat stability was weak.This paste was suitable for north mines and deep mines with higher temperature.

关 键 词：矸石膏体 充填材料 耐久性 抗侵蚀性 抗渗性 热稳定性 

分 类 号：TD875[矿业工程—非金属矿开采]