新安县引畛济涧隧洞工程小导管注浆技术

Slim pilot pipe grouting technology for the Zhenhe to Jianhe Water Diverting Tunnel Project in Xin’an County

新安县引畛济涧工程3号竖井开挖深度大,地下水极其丰富,存在涌水突水情况。采取小导管注浆措施进行涌水点2倍洞径范围内封堵渗涌水,浆液采用水泥水玻璃双浆液。注浆封堵加固一环开挖掘进一环,成功地完成了隧洞的开挖掘进。为类似工程施工提供了经验。

The excavation depth of the No.3 shaft on the Zhenhe to Jianhe Water Diverting Project in Xin’an County was large, where groundwater was extremely rich with water gushing and flooding. Slim pilot pipe grouting was taken to seal off seepage and gushing within 2 times the shaft diameter of the gushing point with a dual fluid made of cement and sodium silicate mortar. With grouting before excavation, the tunnel excavation was successfully completed , which can provide experience for the construction of similar projects.