| 水平旋喷在饱和粉细砂围岩中的应用 |
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| 引用本文： | 魏文义,杜立新,毕德灵,孙成刚.水平旋喷在饱和粉细砂围岩中的应用[J].现代隧道技术,2011,48(2). |
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| 作者姓名： | 魏文义 杜立新 毕德灵 孙成刚 |
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| 作者单位： | 中铁十九局兰渝铁路工程项目部,甘肃定西,743001 |
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| 摘 要： | 水平旋喷利用高压射流浆液破碎围岩并通过旋转搅拌将水泥浆与围岩充分混合搅拌,形成柱状固结体,解决注浆无法达到充分渗透处改善围岩的目的.文章通过分析水平旋喷桩施工难点及适用地质条件,并介绍孔口止水装置在旋喷施工中的应用,以及解决跑浆塌孔断桩现象,为软流塑饱和粉细砂围岩提供有效的施工参考.
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| 关 键 词： | 黄土隧道 饱和粉细砂 软流塑 水平旋喷 |
Application of Horizontal Rotary Jet Grouting in Saturated Fine Sand |
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| Wei Wenyi Bi Deling Sun Chenggang.Application of Horizontal Rotary Jet Grouting in Saturated Fine Sand[J].Modern Tunnelling Technology,2011,48(2). |
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| Authors: | Wei Wenyi Bi Deling Sun Chenggang |
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| Institution: | Wei Wenyi Bi Deling Sun Chenggang(Project Management Department of Lanzhou-Chongqing Railway,China Railway No.19 Construction Bureau Group,Dingxi 743001) |
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| Abstract: | Horizontal rotary jet grouting makes use of high-pressure spray to break surrounding rock and mixes cement paste with rocks by means of rotary stirring to form columnar consolidated piles,while routine grouting can not fully penetrate the ground and improve it.The paper analyses the construction difficulties of horizontal jet piles and the suitable geological conditions for this technique,and the application of water-stopping installation at the mouths of bore holes in the jet grouting to prevent motar esca... |
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| Keywords: | Loess tunnel Saturated fine sand Soft plastic flow Horizontal jet grouting |
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