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新型巷道底板锚索注浆封孔器漏浆量计算研究

Shao-wei LIU,Jian-chao CHANG,Hui ZHANG

Journal of Safety Science and Technology（2015）

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Abstract
封孔器是巷道底板预应力锚索注浆成败的关键部件,封孔器与钻孔壁间漏浆量是影响注浆效果的主要因素.根据新型巷道底板预应力锚索注浆封孔器工作原理,依据封孔器与钻孔壁间浆液的流动特征,采用流体雷诺系数判别浆液为层流.通过理论公式与数值模拟两种计算漏浆量方法的对比分析,得出了漏浆量平均误差率,提出了理论公式修正系数K,修正后的理论公式可为封孔器直径、钻孔直径、封孔长度、封孔器内膨胀材料等参数的最优组合提供重要理论参考.
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Key words
slurry leakage quantity,new hole packer
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