| 混凝土充填材料在沿空留巷巷旁充填中的试验研究 |
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| 引用本文： | 王佳喜,秦涛,冯俊杰,刘永立.混凝土充填材料在沿空留巷巷旁充填中的试验研究[J].煤炭技术,2012,31(6):94-95. |
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| 作者姓名： | 王佳喜 秦涛 冯俊杰 刘永立 |
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| 作者单位： | 1. 龙煤集团七台河分公司,黑龙江七台河,154600
2. 黑龙江科技学院资源与环境学院,哈尔滨,150027 |
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| 摘 要： | 对沿空留巷巷旁充填混凝土充填材料进行了配比试验,测试不同配比的水泥砂浆与矸石形成的胶结体单轴压缩强度;分析了不同水灰比及加入矸石后材料强度的变化。试验结果表明:试件强度值的变化随着水灰比值的增加而有所降低;含矸试件强度要大于纯水泥砂浆试件强度;随着矸石间隙的减小,充填浆液的流动性受到一定的限制,导致矸石填充效果受到影响,降低矸石充填体的整体强度。
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| 关 键 词： | 沿空留巷 充填材料 混凝土充填 水灰比 |
Experimental Study of Concrete Packing Materials in Roadside Packing of Retaining Roadway Along Goaf |
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| WANG Jia-xi
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QIN Tao
,
FENG Jun-iie
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LIU Yong-li.Experimental Study of Concrete Packing Materials in Roadside Packing of Retaining Roadway Along Goaf[J].Coal Technology,2012,31(6):94-95. |
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| Authors: | WANG Jia-xi QIN Tao FENG Jun-iie LIU Yong-li |
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| Affiliation: | 1.Qitaihe Branch of Longmay Group,Qitaihe 154600,China;2.College of Resource and Environment Engineering,Heilongjiang Institute of Science and Technology,Harbin 150027,China) |
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| Abstract: | First,the proportion test of concrete packing materials were carried out in retaining roadway along goaf with roadside packing.The uniaxial compressive strength of cementation bodys was tested on different ratios of cement-mortar and gangue.Then,the changes of materials strength were analyzed on different ratio of water-cement and specimens with refuse.The results showed that the changes of specimens strength reduced with concentration increase of water-cement,strength of specimens with refuse were more than cement-mortar,the fluidity of packing slurry was certainly limited as the refuse clearance decreased,so as to impact effect of refuse packing and decreased on integral strength of refuse filling bodys. |
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| Keywords: | retaining roadway along goaf packing material concrete packing water-cement ratio |
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