胶固粉尾砂胶结充填体强度实验研究  

Study on the Strength of Glue-powder Tailings Cemented Filling Body

作　　者：孙光华[1,2] 叶洪涛[1,2] 刘志义[1,2] 龚君放 路燕泽 SUN Guanghua YE Hongtao LIU Zhiyi GONG Junfang LU Yanze(College of Mining Engineering, North China University of Science and Technolagy, Tangshan, Hebei 063210, China Hebei Province Key Laboratory of Mining Development and Safety Technique, Tangshan, Hebei 063210, China Hebei Iron ＆ Steel Group Mining Co., Ltd, Shirengou Iron Mine, Tangshan, Hebei 063000, China)

机构地区：[1]华北理工大学矿业工程学院,河北唐山市063210 [2]河北省矿业开发与安全技术重点实验室,河北唐山市063210 [3]河北钢铁集团矿业有限公司石人沟铁矿,河北唐山市063000

出　　处：《矿业研究与开发》2017年第3期56-59,共4页Mining Research and Development

基　　金：河北省自然科学基金项目(E2016209224);河北省自然科学基金项目(E2015209172)

摘　　要：针对胶固粉和硅酸盐水泥对尾砂胶结充填体抗压强度的影响进行了对比实验研究,测得不同浓度、不同灰砂比和充填体在不同龄期下的抗压强度。实验结果显示:在灰砂比和浓度相同条件下,随龄期的增加,胶固粉胶结充填体强度增长明显,28d龄期胶固粉充填体强度明显高于水泥充填体强度值,60d龄期胶固粉充填体强度增加值依然显著;低灰砂比胶固粉尾砂胶结充填不仅满足矿山充填强度的要求,并降低了充填成本,具有良好的效益。The contrast experiments were conducted to study the influences of glue-powder and portland cement on the compressive strength of tailings cemented filling body, which obtained the compressive strengths of filling body under different concentrations, cement-sand ratios and curing periods. The results showed that under the same cement-sand ratio and concentration, the compressive strength of glue-powder cemented filling body greatly increased with the increase of curing period, the strength of glue-powder cemented filling body in 28 d was higher than that of cement filling body, and the strength Of glue-powder filling body in 60 d still improved obviously. The glue-powder tailings cemented filling with low cement-sand ratio not only met the requirement of filling strength, but also reduced the filling cost, with good economic benefit.

关 键 词：胶凝材料 尾砂胶结充填体 抗压强度 龄期 

分 类 号：TD853.343[矿业工程—金属矿开采]