Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Shield tunnel deformation grouting reinforcement correction method suitable for water-rich sand layer
The invention provides a shield tunnel deformation grouting reinforcement deviation rectifying method suitable for a water-rich sand layer, which comprises the following steps of: drilling a grouting hole in a stratum needing to be grouted through a drilling device, fixing a one-way valve and mounting a sleeve valve pipe, and then reinforcing a soil body through high-low pressure pulse long-distance jet grouting, and then double-liquid normal-pressure grouting is conducted through the duct piece secondary grouting hole, and finally the grouting pipe is lowered downwards to be connected with the high-pressure grouting liquid to conduct double-liquid secondary grouting till grouting is finished. The grouting pressure is adjusted in the grouting process, the slurry diffusion radius is enlarged, and the slurry diffusion range is widened; the strength of a grouting reinforcement body in the preset time can be improved by adopting multiple grouting procedures and combining with a reversing valve to adjust a grout path, a grout stop wall and a reaction wall are formed to facilitate implementation of deviation correction pressure, the external load resistance of the tunnel is enhanced, and the reinforcement deviation correction efficiency of grouting is improved.
本发明提供了一种适用于富水砂层的盾构隧道变形注浆加固纠偏方法，包括以下步骤：通过钻孔装置在需要注浆的地层钻取注浆孔并进行单向阀固定和袖阀管的安装，而后通过高低压脉冲长距离喷射注浆加固土体，再通过管片二次注浆孔进行双液常压注浆，最后向下降低注浆管连接较高压注浆液进行双液二次注浆，直至注浆结束。本发明在注浆过程调节注浆压力扩大浆液扩散半径，提高浆液扩散范围；采用多道注浆工序并结合换向阀调整浆路可提高注浆加固体在预设时间内的强度，形成止浆墙和反力墙利于纠偏压力实施，既加强隧道抵抗外界荷载的能力，又有利于提高注浆的加固纠偏效率。
Shield tunnel deformation grouting reinforcement correction method suitable for water-rich sand layer
The invention provides a shield tunnel deformation grouting reinforcement deviation rectifying method suitable for a water-rich sand layer, which comprises the following steps of: drilling a grouting hole in a stratum needing to be grouted through a drilling device, fixing a one-way valve and mounting a sleeve valve pipe, and then reinforcing a soil body through high-low pressure pulse long-distance jet grouting, and then double-liquid normal-pressure grouting is conducted through the duct piece secondary grouting hole, and finally the grouting pipe is lowered downwards to be connected with the high-pressure grouting liquid to conduct double-liquid secondary grouting till grouting is finished. The grouting pressure is adjusted in the grouting process, the slurry diffusion radius is enlarged, and the slurry diffusion range is widened; the strength of a grouting reinforcement body in the preset time can be improved by adopting multiple grouting procedures and combining with a reversing valve to adjust a grout path, a grout stop wall and a reaction wall are formed to facilitate implementation of deviation correction pressure, the external load resistance of the tunnel is enhanced, and the reinforcement deviation correction efficiency of grouting is improved.
本发明提供了一种适用于富水砂层的盾构隧道变形注浆加固纠偏方法，包括以下步骤：通过钻孔装置在需要注浆的地层钻取注浆孔并进行单向阀固定和袖阀管的安装，而后通过高低压脉冲长距离喷射注浆加固土体，再通过管片二次注浆孔进行双液常压注浆，最后向下降低注浆管连接较高压注浆液进行双液二次注浆，直至注浆结束。本发明在注浆过程调节注浆压力扩大浆液扩散半径，提高浆液扩散范围；采用多道注浆工序并结合换向阀调整浆路可提高注浆加固体在预设时间内的强度，形成止浆墙和反力墙利于纠偏压力实施，既加强隧道抵抗外界荷载的能力，又有利于提高注浆的加固纠偏效率。
Shield tunnel deformation grouting reinforcement correction method suitable for water-rich sand layer
一种适用于富水砂层的盾构隧道变形注浆加固纠偏方法
JIANG YALONG (Autor:in) / HUANG YULONG (Autor:in) / XU CHANGJIE (Autor:in) / GENG DAXIN (Autor:in) / XU ZHENZHEN (Autor:in) / LUO RUPING (Autor:in) / DUAN YUN (Autor:in) / LIN FUGEN (Autor:in) / DING HAIBIN (Autor:in)
23.02.2024
Patent
Elektronische Ressource
Chinesisch
Vibration grouting reinforcement method for water-rich sand layer
| Europäisches Patentamt | 2023
| Europäisches Patentamt | 2023
Shield synchronous grouting material suitable for water-rich karst stratum
| Europäisches Patentamt | 2024
Shield synchronous grouting material suitable for water-rich karst stratum
| Europäisches Patentamt | 2024
Experimental investigation on backfill grouting deformation characteristics of shield tunnel in sand
| British Library Conference Proceedings | 2007