Tunnel grouting water blocking construction method

CN116696411BActive Publication Date: 2026-05-19SINOHYDRO BUREAU 6 CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
SINOHYDRO BUREAU 6 CO LTD
Filing Date
2023-06-21
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

In existing grouting water-blocking processes, single-component, single-concentration grouting materials are prone to seepage damage and material loss in complex tunnel sections, leading to extended construction periods and increased capital investment.

Method used

Different components of grouting liquid and targeted hole layout technology are used, combined with the mixed use of HSC grout and epoxy resin grouting material. Different grouting pressures and hole layout methods are adopted for different water inflow rates, combined with sealing and drainage methods.

Benefits of technology

It achieved effective sealing, saved construction time and capital investment, improved sealing efficiency, and reduced the risk of ultra-high pressure water inrush washing away the grouting material.

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    Figure CN116696411B_ABST
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Abstract

The application discloses a tunnel grouting water-blocking construction method, which comprises the following steps: setting up a drilling grouting operation platform; arranging grouting holes and drainage holes in a water-leaking tunnel section, and installing a water guide pipe and a grouting pipe; preparing grouting liquid by using a high-speed grouting machine; grouting; when the water inflow of the grouting hole is greater than 85 L / min, HSC grouting liquid mixed with epoxy resin grouting material is used for grouting, wherein the mass ratio of the epoxy resin grouting material is 12%; when the water inflow of the grouting hole is less than 85 L / min and greater than 20 L / min, HSC grouting liquid mixed with epoxy resin grouting material is used for grouting, wherein the mass ratio of the epoxy resin grouting material is 90%; when the water inflow of the grouting hole is less than 20 L / min, HSC grouting liquid is used for grouting; and hole sealing. The grouting water-blocking construction method realizes effective plugging, saves construction period and reduces capital investment by using different components of grouting liquid and targeted hole arrangement technology for different underground water sections and complex tunnel sections.
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