A high-pressure waterway anti-seepage method and a high-pressure waterway annular anti-seepage curtain

Abstract

The invention discloses a high-pressure waterway anti-seepage method and a high-pressure waterway annular anti-seepage curtain, which belong to the field of rock mass anti-seepage, in particular to the field of rock mass anti-seepage treatment in a relatively high water head environment. The present invention aims at the disadvantages of the existing high-pressure waterway that needs to set up hanging curtains upstream of the underground powerhouse. Consolidate grouting holes and anti-seepage grouting holes; then use 0.3Mpa~0.5Mpa pressure for anti-seepage grouting and surrounding rock consolidation grouting; finally use ultra-fine cement chemical grouting and anti-seepage grouting holes with a grouting pressure greater than 2.0MPa to improve the surrounding area. The anti-seepage performance of the rock can reduce the leakage of high-pressure waterways, and then achieve the purpose of canceling the hanging curtain. The method has reasonable process layout design, simple structure and convenient operation, and can greatly save engineering cost.

Description

technical field [0001] The technology of the invention relates to rock mass anti-seepage fields such as water conservancy and hydropower projects and water delivery projects, in particular to a high-pressure waterway anti-seepage method and a high-pressure waterway annular anti-seepage curtain for rock mass anti-seepage treatment in a relatively high water head environment. Background technique [0002] Under the existing technical conditions, the surrounding rock of the high-pressure water channel of the pumped storage power station adopts conventional backfill grouting and consolidation grouting treatment methods, and there is no technical requirement for the anti-seepage of the surrounding rock. The disadvantage is that under the condition of reinforced concrete lining, There is a large amount of infiltration in the high-pressure waterway, so it is necessary to set up hanging curtains upstream of the underground powerhouse to [0003] Prevention and control of the ground...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a high-pressure waterway anti-seepage method, which can control the high-pressure Water leakage can be used to solve the problem of anti-seepage treatment of underground powerhouses, and at the same time, the operating costs of pumped storage power stations can be saved by reducing the leakage of high-pressure water channels

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