Tunnel water gushing treatment method

Abstract

The invention discloses a tunnel water gushing treatment method. The method comprises the following steps that a water gushing hole serves as a starting point to be drilled to form a water gushing channel. A grouting pipe penetrates through the flange plate and extends into the water gushing channel. A water guide port corresponding to the water gushing point is determined through inflation standing of the air inlet, a water guide cavity corresponding to the water guide port is determined, and then the water gushing depth is judged. A hole is drilled in the inner wall of the tunnel and locatedin the circumferential direction of the grouting pipe till a pressure relief channel communicating with the water gushing hole is found, and a pressure relief point is determined. If the connecting line of the water gushing point and the pressure relief point is located above the horizontal plane where the water gushing point is located, it is determined that the water gushing hole is a descending hole, otherwise, the water gushing hole is an ascending hole, and if the water gushing hole is a descending hole, grouting and water plugging are conducted in the pressure relief channel, and then grouting and water plugging are conducted in the grouting pipe. If the water gushing hole is an ascending hole, grouting and water plugging are conducted in the grouting pipe, and then grouting and water plugging are conducted in the pressure relief channel. The method has the beneficial effect of realizing accurate grouting on the basis of following 'blockage-based and limited discharge '.

Description

technical field [0001] The invention relates to the technical field of tunnel water gushing treatment. More specifically, the invention relates to a method for controlling water gushing in a tunnel. Background technique [0002] The construction of the tunnel destroys or changes the original hydrogeological environment in the area where the tunnel is located, and the tunnel becomes a new good groundwater drainage channel, which causes tunnel water inrush disasters. At present, the grouting sealing method is usually used in the water gushing treatment of the tunnel construction period and the operation period. After drilling in the water gushing area, grouting is carried out into the water-conducting structure through the borehole to achieve sealing and improve the physical and mechanical properties of the surrounding rock, thereby Resume normal construction or operation of the tunnel project. [0003] The traditional grouting plugging method has the following problems: ...

AI Technical Summary

Problems solved by technology

[0004] 1: The emergency treatment capacity is relatively weak, and it is impossible to block the water gushing outlet in time and provide a controllable water diversion outlet on the principle of "mainly blocking, limited discharge";

[0005] 2: The depth of the water gushing point relative to the borehole is not considered, and the position of the pressure relief point relative to the water gushing outlet is blocked by forced grouting, which cannot achieve effective and precise grouting, and forced grouting will easily cause unnecessary disturbance to the tunnel

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