| 劈裂注浆浆液走势与不同压力下土体位移试验研究 |
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| 引用本文： | 王起才,张戎令.劈裂注浆浆液走势与不同压力下土体位移试验研究[J].铁道学报,2011(12):107-111. |
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| 作者姓名： | 王起才 张戎令 |
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| 作者单位： | 兰州交通大学土木工程学院;甘肃省道路桥梁与地下工程重点实验室; |
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| 基金项目： | 铁道部科技研究开发计划(2007G027); 甘肃省道路桥梁与地下工程重点实验室开放基金(kfjj-10-6) |
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| 摘 要： | 铁路提速线路湿陷性黄土路基病害治理对于保证列车行车安全具有重要意义。本文对既有线黄土路基病害进行室内模拟试验研究,研究劈裂注浆浆脉形成的原因、机理、经历阶段、不同压力下注浆后路基土体位移情况、浆脉走势,得出拟合公式,并通过室内土层注浆试验装置对理论分析进行验证。实验结果表明:湿陷性黄土路基在注浆压力为0.3～0.5MPa下很难出现二次劈裂;劈裂注浆中起主要作用的是填充效应、挤压效应、骨架效应;周围土体中细小浆液形成的浆液管道也起着不可忽略的作用,且形成的浆脉属张开型裂缝。
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| 关 键 词： | 劈裂注浆 浆脉走势 不同压力 位移 |
Experimental Research on the Trend of Slurry About Fracturing Grouting and Soil Displacement in Different Pressure |
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| WANG Qi-cai,ZHANG Rong-ling.Experimental Research on the Trend of Slurry About Fracturing Grouting and Soil Displacement in Different Pressure[J].Journal of the China railway Society,2011(12):107-111. |
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| Authors: | WANG Qi-cai ZHANG Rong-ling |
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| Institution: | WANG Qi-cai1,2,ZHANG Rong-ling1,2 (1.School of Civil Enginecring,Lanzhou Jiaotong University,Lanzhou 730070,China,2.Key Laboratory of Road & Bridge and Underground Engineering of Gansu Province,China) |
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| Abstract: | The treatment of loess roadbed disease on raising speed railway had important significance for road safety.The experimental research on indoor simulation test about existing lines loess roadbed disease.Forming reason,mechanism,experience stage of slurry vein and soil displacement in different pressure grouting,slurry vein trend have been investigated,fitting formula was obtained.Theoretical analysis was proved by test device.The experimental results indicate that the second splitting can hardly occurred in ... |
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| Keywords: | fracturing grouting slurry vein trend different pressure displacement |
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