A device and method for automatically sealing water in a confined water formation and then grouting it

Abstract

The invention relates to a device and method for confined water stratum automatic water sealing post-grouting blockage. The device comprises a drilling rod (7), and the interior of the drilling rod (7) is provided with a hollow channel. The device is characterized in that a movable sealing structure for automatically opening or sealing the hollow channel is arranged on the upper portion of the hollow channel, a circle of drilling rod holes (3) for gushing-out of confined water are formed in the side wall of the middle of the drilling rod (7), and a rubber ring (1) for expanding outwards afterthe confined water gushes out of the drilling rod holes (3) is arranged on the portion, on the outer sides of the drilling rod holes (3), of the drilling rod (7); and the rubber ring (1) seals all thedrilling rod holes (3). Compared with the prior art, according to the device and method for confined water stratum automatic water sealing post-grouting blockage, automated and rapid sealing can be achieved, the water is effectively stopped, sudden gushing of the confined water is avoided, feasibility is high, and the success rate is high.

Description

technical field [0001] The invention relates to the field of building technology, in particular to a device and method for automatically sealing water in a pressurized water formation and then grouting and sealing. Background technique [0002] At present, when constructing tunnels such as highways and subways, facing formations containing confined water, the method of advanced grouting and sealing is often used for processing, first drilling to form holes, and then placing grouting pipes for grouting. Due to the pressure of groundwater and the need to manually seal the grouting hole when drilling into the hole, the leak cannot be plugged in time when drilling into the confined water layer, resulting in sudden surges, safety accidents, and affecting construction quality. In terms of sealing, scholars at home and abroad have studied chemical automatic sealing devices to seal, but the reaction time is too long, and the effect is unstable and not obvious. Therefore, in the con...

AI Technical Summary

Problems solved by technology

Due to the pressure of groundwater and the need to manually seal the grouting hole when drilling into the hole, the leak cannot be plugged in time when drilling into the confined water layer, resulting in sudden surges, causing safety accidents and affecting construction quality.

In terms of sealing, scholars at home and abroad have studied chemical automatic sealing devices to seal, but the reaction time is too long, the effect is unstable and not obvious

Therefore, in the confined water environment, there is still a lack of a timely, convenient and effective automatic water sealing and grouting method for grouting and water sealing.

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